How to measure depth in mining

1. Press F3 in the game, the upper left corner has x, y, Z coordinates, y is the current height (0 ~ 255), mining in the 11 floor height is the best

2.

Mining is the use of bitcoin mining machine, which is used to earn bitcoin

one of the ways to get bitcoin is that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server

bitcoin is a kind of virtual currency. Bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware. Miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by miners, so the competition for mining is very fierce

mining is actually a competition of performance and equipment. The mining machine composed of many graphics cards, even if it's only hd6770, can surpass the single graphics card of most users

and this is not the most terrible. Some mining machines are made up of more such graphics card arrays. When dozens or even hundreds of graphics cards come together, the graphics card itself costs money. Considering the hardware price and other costs, there is a considerable expenditure in mining

< H2 > extended data:

bitcoin mining process:

1. To find the ore pool

to start mining, there must be a ore pool with convenient operation and stable output. Its function is to subdivide the data packets for each terminal, and pay the corresponding amount of bitcoin according to the proportion of the data packets calculated by the terminal through precise algorithm

2. Download bitcoin miner (software)

in fact, there are many kinds of this miner, you can go to the official website to download

3. Setting mining software is a green software. After installation, we can set the language first to facilitate further setting. Next, you need to set the server, user name, password, equipment and so on. Generally, the server chooses a better network from BTC guide series, and the user name and password are set by ourselves before

4, bitcoin mining start

when we confirm that all settings are correct, click the "start mining" button to start bitcoin mining, and then the graphics card will soon enter the full speed running state, the temperature and fan speed will increase, you can monitor the state through gpu-z or graphics card driver

3. All brands and models have original data and are pasted in the cockpit
it is generally designed at 2.2-3.5km/h
if you really want to calculate, support the unilateral track
calculate the number of single circle gears of walking oil pump
calculate the speed of oil pump per minute = C
calculate the number of gun tubes in the track
measure the total circumference of the track = B (in meters)
formula: gun tubes divided by the number of gears = a
C except a times b times 60 = walking distance per hour
walking distance divided by 1000 is the speed per hour (1km / h = 1000m / h)

4. Why don't you change a graphics card

5.

Zhongsen Shengshi (Beijing) Management Technology Co., Ltd., established on July 27, 2018, is represented by song Mingjing. The company is located in Beijing Haidian District urban construction building, backed by Beijing Urban Construction Group and Datang Group, is a capital and strength "double male thick" deep in the field of Agricultural Internet technology enterprises

since its establishment, it has always taken "science and technology make food more at ease" as its purpose, used modern high and new technology to change the existing development pattern of agricultural food safety, and used high and new technology to realize traceable high standard management of crop output quality, so as to solve the existing thorny problem of "unstable quality and unsafe food" in the market

sanqingliangtian, its top agricultural platform in season, integrates the latest technologies such as 5g mobile network, cloud computing, Internet of things, blockchain traceability, frame by frame monitoring, big data AI system, etc., and seamlessly connects the upstream and downstream of the agricultural supply chain

as the only seasonal top agricultural platform authorized by SASAC in China, it adheres to the business principle of "food traceability, drug and food homology ". Starting from the two major directions of food safety and drug and food homology, it develops horizontally and vertically from the four sectors of seasonal specialty, good farmland selection, farmland adoption, and cultural and social interaction, Infiltrate and solve the food safety problems in the field of Internet agriculture, and make every effort to develop our own top agricultural platform in season. Under the communication mode of B2B2C platform, the origin, planting mode and transportation mode of goods can be traced through the blockchain technology, and the whole process of quality control from field to table can be online, so as to truly realize the safety of consumers. With the guarantee of food safety, the source procts will no longer worry about selling

The strong instry endorsement and solid agricultural foundation are enough to support three hectares of good farmland, and the top five of characteristic high-quality seasonal agricultural procts in 570 counties and cities of 34 provinces in China are selected. Not eating from time to time, the acme of eating culture, is "just good food"

for seasonal agricultural procts, preservation is the most important. All seasonal crops on sale on sanqingliangtian platform are distributed by top modern logistics echelon. At the same time, the primary principle of "food traceability" is followed. From the farm to the dining table, accurate tracking can be seen at a glance

The independent brand "Sanqing Liangtian" of the platform has two branches, namely "zhencong" congee series and "yuanbencha" tea series, which comprehensively control the proct quality from three aspects: source quality, planting technology and transportation mechanism

sanqingliangtian has 300 + self-supporting agricultural bases in China, which attaches importance to the selection of the most easily neglected soil quality from the source, so as to make the best crops find the most suitable soil and truly "adjust measures to local conditions"; In terms of planting, Zhongsen Shengshi has a comprehensive crop seed resource bank, from which the best varieties will be selected to ensure the top quality of crops after fruiting; The modern top logistics echelon is also used in the proct transportation to comprehensively control the proct quality from the source to the end, so as to truly "pay attention to food"

farmland Adoption - a new way to play agricultural procts trading mode

social culture: the landing mode of "modern agricultural marketing"

in sanqingliangtian, users can choose to buy all kinds of agricultural procts in the app, and share their purchase experience with friends nearby. They can meet more friends with the same taste system in social shopping, form their own "shopping circle", and then combine with the relevant content of self output of the platform, So that users can know more about "agricultural life aesthetics"

The live channel of the

platform is also different from the single selling mode of the traditional e-commerce live broadcasting. It has launched a new agricultural e-commerce live broadcasting mode of "one county, one proct, one secretary". It advocates to carry forward the national regional food culture and make up for the phenomenon that some consumers do not buy local agricultural procts e to the lack of cultural confidence. At the same time, "one county" only selects the best "one proct" to ensure quality and quantity

in view of the above four sections, the first principle of "food can be traced, medicine and food have the same origin" of Sanqing Liangtian is removed, and the platform also pays great attention to the embodiment of the principle of "de commercialization of procts". Most of the existing platforms in the market often over package the procts and ignore the quality of the procts. As a result, more and more consumers graally lose confidence in "online shopping" of agricultural procts. However, the principle of "de commercialization" of sanqingliangtian aims to only pursue the quality of the procts themselves and put aside the blasphemy of the added value to the real procts, Lead consumers to the 2 era of "Internet plus agriculture", and enhance the trust and happiness of consumer groups. p>

in the future, Sanqing Liangtian will use more high and new technologies to make the Internet agriculture continue to develop. The platform will use the blockchain big data AI system to carry out the whole process intelligent monitoring of the farmland in the proction source area, and let users use 5g communication technology to observe the growth of farmland in real time

it is estimated that in the future, Sanqing Liangtian platform will integrate and cultivate more than 8000 ecological farms and 6634 characteristic agricultural cooperatives to realize the "agriculture + big health" characteristic agricultural tourism service integrating organic agriculture, medical service, leisure and entertainment, health care and vacation, and the project is expected to provide a new entrepreneurial platform for 12 million self-employed distributors, Continue to drive the local economy forward

At the same time, it also hopes to provide more possibilities for the development of China's agriculture and agricultural e-commerce instry

6. Supermarkets like to collect coins, and banks can exchange them.

7.

The measurement of underground mining right includes: underground connection survey, underground plane control survey, underground elevation control survey and excavation engineering survey

(1) the measured objects are mainly roadway system, mining area system and goaf. The roadway system includes the main shaft, auxiliary shaft, transportation roadway, general roadway, crosscut, shaft bottom yard, etc; Mining area system includes mining working face, transportation lane, uphill and downhill, return air lane, sidewalk, etc; The goaf mainly collects the mine geological survey data, generally does not need the field survey. For the mining right that has not been mined, the wellhead position should be measured

if the mining right holder has completed the tasks of control survey and excavation engineering survey, and has prepared the plan of excavation engineering or similar drawings, 3-5 characteristic points should be selected for actual measurement and inspection. If the inspection meets the requirements, it is not necessary to repeat the measurement. If there is no indication in the recently completed excavation engineering drawing, supplementary survey is needed

(2) actual measurement requirements

1. Transportation roadway measurement

for transportation roadway, return air roadway, crosscut, uphill and downhill, various chambers of development project, the total station is used to measure the coordinates and elevation of the inflection point of the center line, and measure the roadway width. For the main roadway distribution map of mining right collection with map, 2-3 points are detected at the end, a large number of points are located at the top of arch body and beam shed, and the height of roadway needs to be measured

For heading roadway, only the inflection point of the center line is measured. When it is difficult to use total station, low precision equipment such as hanging line compass and steel ruler can be used for measurement, and graphic method can be used to calibrate roadway position

The purpose of traverse survey is to establish control points in the roadway and working face, control the plane position and elevation of the roadway and working face, and then map the plan of the roadway and working face according to the traverse points. The method of traverse survey in mining face is described below

point selection: select the point at the appropriate position of the two sides of the roadway, use piles or nails as signs, and write the point number. In order to hang the instrument conveniently, the conctor is in the form of diagonal, and one point is selected for each of the two sides. Before and after the two points must be unobstructed, the distance should not be greater than 20 meters. The first point of the traverse must be the advanced control point underground. If there is a theodolite traverse point in the roadway, it must be connected with it

measuring azimuth: when measuring the magnetic azimuth of the wire side with a hanging compass, first use a thin wire rope to tie on the iron nails at the front and rear points, hang the instrument, and make the instrument 00 point to the forward direction of the line. After the needle is stationary, read out the magnetic azimuth of the line from the north end of the needle. Generally, both ends of the rope should be measured once, and the average value should be taken

measuring distance: the distance between two measuring points, usually measured with a tape measure to centimeter. The distance should also be measured twice, taking the average value

slope (elevation) measurement: when using inclinometer to measure the slope, first fasten the rope at the front and rear two points, hang the inclinometer at 1 / 3 of both ends of the rope, measure once respectively, read out the inclination angle, take the average value, and record it in the inclination column of the survey record table on the spot

measuring point height: measure the vertical height from the small nail (pile) to the floor of the seam (or roadway) with a steel ruler

Record: record the measured data in detail on the spot according to the format of the measurement record sheet

The measurement of mining face and broken part should be carried out in the field, and the distance record should be checked in detail. The magnetic azimuth angle shall be observed at both ends of the conctor side with a hanging compass, and the difference of the magnetic azimuth angle measured at both ends shall not exceed 1 ° The side length of the broken wire can be measured twice with a steel ruler or a checked tape, and the reading can be taken as centimeter. The difference between the two measurement results of the same side length shall not exceed 1 / 200 of the side length

most of the broken wire edges are inclined, and the measured length is also inclined length. Before drawing a plan, the slant length must be converted to the horizontal length. Calculation of elevation: the calculation of elevation can be divided into two steps. The first step is to calculate the elevation difference according to the slant length and slant angle, and the second step is to calculate the elevation of the measuring point according to the elevation of the known point, the obtained elevation difference and the height of the measuring point. Plotting broken traverse: Compass survey results, usually do not calculate the coordinates, directly use the protractor and trigonometric ruler to plot according to the survey results

Basic requirements in order to adopt a unified plane coordinate system and elevation system, the contact survey should be carried out. Contact measurement shall be carried out at least twice independently. When the mutual difference does not exceed the limit, the weighted average or arithmetic average value shall be used as the measurement result

At the same time, no less than 4 permanent traverse points and 3 elevation datum points (or permanent traverse points can be used as elevation datum points) should be buried in the rock at the bottom of the well or on the arch body

through the contact survey of inclined shaft or adit, it can start from the ground near the well point, and use the ranging elevation traverse or leveling method

every mine should use gyro theodolite orientation as far as possible, only when this condition is not met, geometric orientation is allowed

using the geometric orientation measurement method, the difference between the two independent orientation results calculated from the near well point should not exceed 1 'and 2' respectively for two well orientation and one well orientation. When the external conditions of directional survey of a well are poor, on the premise of meeting the requirements of mining engineering, the mutual difference can be relaxed to 3 ', and if the length of one wing of the mine is less than 300 meters, the mutual difference of two independent directional results can be appropriately relaxed, but not more than 10'

when the elevation is introced through the vertical shaft, the mutual difference of the two elevations of the underground elevation base points shall not exceed 1 / 80000 of the shaft depth

within the scope of the mine, in principle, all kinds of roadways leading to the ground should be connected for measurement, and connected with wires underground for inspection and adjustment

the instruments used underground are as follows:

theodolites: optical theodolites of grade J2 and grade J6; Explosion proof quick measuring instrument; Laser theodolite; Gyro theodolite

Level: S1, S2, S3, S10

rangefinder: explosion proof photoelectric rangefinder, medium short range infrared rangefinder, explosion-proof total station

Other instruments: electronic flat gauge, mine hanging compass, inclinometer and other auxiliary measuring instruments and geological compass; Laser pointer, steel ruler, tape, measuring rope, etc

The near well point and elevation base point established near the wellhead should meet the following requirements: as far as possible, it should be buried in a place convenient for observation, preservation and not affected by mining; There are no more than three sides of the joint survey wire from the near well point to the wellhead; There are no less than 2 elevation base points, and the near well points can be used as elevation base points

the near well points can be determined by inserting net method on the basis of the basic control points in the mining area. For the mining area without basic control, the layout of near well points can be considered together in order to improve the accuracy of near well points. The mean square error of the near well point measured by inserting net method shall not exceed 0 ± 7 cm, and the mean square error of the rear-view azimuth angle shall not exceed 0 ± 10″

in order to meet the measurement accuracy requirements of some important roadways, the layout of near well points should make each near well point in a control network as far as possible, and make the near well points of adjacent wellhead form an edge or strive to minimize the number of separated edges

the mean square error of angle measurement by directional connection from near well point to wellhead is less than 0 ± 5 "or less ± 10 "closed conctor

The elevation joint survey of the wellhead base point should be carried out according to the requirements of the fourth grade leveling, and the mean square error of the elevation of each point should not exceed 0 ± 20 mm

In order to rece the error of the point, the fan should be stopped ring the period of the point and the joint measurement. Under special circumstances, measures such as isolation or recing the wind speed can be taken

the equipment used for directional casting point shall meet the following requirements: all parts of winch must be able to bear three times of the load when casting point; the diameter of drum shall not be less than 250mm; there must be double gates; the diameter of guide pulley shall not be less than 150mm; the weight of heavy thallium suspended on steel wire shall be symmetrical around the suspension point

High strength steel wire with small diameter should be used as far as possible, and enough tensile strength must be ensured. The weight of heavy thallium should be 60% of the tensile strength of steel wire

after the vertical line is put down, it is necessary to check whether there is any contact between the heavy thallium and the barrel wall or bottom, and between the vertical line and the shaft wall or shaft. Geometric orientation is adopted, and the distance between two vertical lines of one well orientation is less than 2mm

when the ruler method or centering plate method is used to determine the stable position of the swing vertical line, the position of the maximum swing amplitude of the vertical line on the ruler should be followed, and more than 13 consecutive readings (odd number) must be taken, and the average of the left and right readings should be taken as the stable position of the vertical line on the ruler. According to the above method, the result is no more than 1 mm. If the swing of the vertical line is very small, the instrument can be used to observe the vertical line directly

Geometric orientation generally adopts triangle connection method, as shown in Figure 5-1. Requirements: DC & gt; 20 meters; γ＋α＜ two ° A / C is the smallest

Fig. 5-1 schematic diagram of triangle connection method; Acute angle of triangle γ＋α Should be less than 2 ° The value of a / C should be as small as possible; The CD side should be as large as possible. When the CD is less than 20 meters, observe the horizontal angle at point C. The instrument is required to center three times, and change the position of the aiming part 120 times each time °

the directional instruments used, the number of times measured and the limit deviation of a well should meet the requirements of Table 5-1

Table 5-1 geometric orientation measurement requirements

measure the length of each side of the connecting triangle, apply the tensile force when verifying the specific length to the steel ruler, record the temperature ring measurement, measure 6 times at different starting points under the condition of stable vertical line, and the difference of each observation value of the same side length is not more than 2mm

in the case of vertical swing, the steel ruler should be fixed along the direction of each side of the measured triangle, and then the position of the steel ruler on the ruler should be determined by swing observation method. The steel ruler should be measured six times with different starting points, and the difference of each observation value of the same side length should not be more than 3mm

in order to check the results of connecting triangles, the length of the calculated C-side should be compared with the actual measurement results, and the mutual difference should not exceed 2 mm in the well; The underground connection triangle shall not exceed 4 mm

Before the directional survey of two wells, the mean square error should not exceed 0 ± According to the requirement of 20 ", the actual measurement scheme of the connecting wire in the well and underground is determined by the prediction method. After projection correction, the distance difference between the two vertical lines above and below the well calculated by the two well orientation should not exceed twice of the mean error of the connection measurement between the above and below the well

5. Import elevation survey

Import elevation survey through shaft, steel ruler method, steel wire method or other methods can be used. The height difference between the elevation base points of the well and the mine and the corresponding marks on the steel wire shall be measured twice with the level, and the mutual difference shall not exceed 4 mm

to measure the length between the upper and lower marks of the steel wire, the steel wire can be stretched and placed on the flat ground, and the pulling force with the same weight of thallium used in the elevation introction can be applied, and the photoelectric distance meter can be used to measure

temperature, specific length of steel ruler and self weight elongation of steel wire should be added to the calculation of elevation with steel ruler method and steel wire method. When the weight of heavy thallium suspended at the lower end of the steel ruler is greater than the pulling force of the longer steel ruler, the elongation correction of the weighted steel ruler should also be calculated

(4) underground horizontal control survey

1. Basic requirements

8. First of all, we need one or two copies of gold. Then we need the refrigerator, birdcage and gold tools. Normally, one or two sets are enough