Mining single bucket excavator
mining method is based on the occurrence factors of the deposit and the physical and mechanical properties of ore and surrounding rock, including the ground pressure control, structural parameters, mining technology, etc
There are many kinds of mining methods for metal deposits e to complex occurrence conditions, great differences in physical and mechanical properties between ore and surrounding rock, and other factors. In order to understand the special nature of various mining methods, understand the applicable conditions and development trend of various mining methods, and study and select reasonable mining methods, it is necessary to classify various mining methods according to their generalities. At present, there are many classification methods. This book divides the mining methods into three categories according to the ground pressure management method The first type is open stoping. This kind of method is used to mine the deposit with stable surrounding rock and ore. the ground pressure management is to support and maintain the goaf with the pillars left in the mining area. In the process of mining, the goaf formed after the ore is mined out is empty without immediate treatment (filling or caving), which is the basic feature of this kind of method. This kind of mining method mainly includes comprehensive method, shrinkage method, room and pillar method, sectional method and stage room methodin the period of stoping room, the shrinkage method of temporary ore is also classified into this category, because the temporary ore can not be used as the main means to support the cofferdam, and it still depends on the pillar to maintain the goaf after a certain period of time. Therefore, sulfur mining method can not be used as an independent ground pressure management method, so it should not be divided into one category
The second type is backfill mining. This kind of method is used in the deposit where the ore is relatively stable (mining is allowed under a certain exposed area) and the surrounding rock is not stable (the exposed area cannot be large, otherwise it will cause caving). The ground pressure management of stope is that the goaf must be filled with filling material to support the surrounding rock reliably, which is the basic feature of filling method. The pillar filling method is also of this kind According to the characteristics of filling materials, this kind of method can be divided into dry filling method, water sand filling method and cemented filling mining method The third type is caving mining method. This kind of method is used to mine the deposit with unstable surrounding rock and ore to medium stable. The ground pressure management of caving method is that the surrounding rock automatically collapses or artificially collapses to fill the goaf with the caving ore at the same time (or slightly lags behind)the main methods of this kind are layered caving, sublevel caving (with or without sill), stage caving and so on. Table 5-5-1 shows the classification of common mining methods
table 5-5-1 classification of mining methods
all infrared can't determine the water containing material, and water has a great influence on the hydroxyl peak
that's about it.
also, Let me tell you what I know. I have noticed this before, but now I have several difficulties in doing it:
1. The client is not easy to get, because the online game environment in foreign countries is different from that in China, so the client of American service version may not be easy to get.
2. It may be difficult to buy a monthly card, although there are American service monthly cards on Taobao and other websites, But the price seems to be not ideal....
3. Now, Warcraft of American service prevents foreign players from selling game currency, disturbs the economic environment in the game, and blocks the IP of many countries. So if you want to play in American service, you have to have a proxy server with stable performance and fast speed. This is also more difficult, Because the era of free Internet has long passed, proxy servers are free, unstable, stable and not free. So this is a problem, and it is related to whether you can connect to the server of Meifu and play normally.
4, Blizzard has a lot of countermeasures against the phenomenon of foreign professional players selling game virtual currency and equipment on Warcraft beauty services. The above IP blocking is a means. Another means is to cooperate with websites such as eBay and investigate many online stores selling game virtual currency and equipment on shopping websites.
in this way, even if you have solved the previous problems, How to sell your gold coins and equipment is also a problem. You can't shout in the game all day long -- |
the above are several difficulties I know, and other specific ones are not clear. There should be many domestic players who make money by this, but I don't think people in the instry will answer your question, because they are afraid that you will rob their business, ha ha
http://www.ztcdk.com/
be familiar with the languages of different countries
it means that you are often in one place when you are practicing, and it's easy to get a title if you play money.
it's also a crime if you don't know other languages.. No chat also has a chance to be called
a large amount of transactions will also happen
there are only three ways to make money. One is to practice on behalf of others, help people to practice skills, and so on, and collect fees. The second is to make money, to be a farmer, and to sell the game currency to a player to earn RMB. Third, it's relatively few. Maybe it's the combination of equipment and equipment
nowadays, there are more game agents in China national service. However, if a small game studio does not have a good reputation, it is difficult to get business
the second is money making organizations. There are very few domestic studios that really rely on money making. If you really go to foreign servers to earn money from foreigners, the US dollar is more cost-effective. Why are there so many players selling game currency in the national service now? In order to maintain their expenditure and make money, they can only rely on some unconventional means, such as stealing numbers... (by the way, I miss the knight of wow level 60...)
the inside story is very difficult to explain. The third one is relatively rare, because it requires a high quality of character, and it often costs nothing
no matter which method is used, it's pure physical labor. After decting expenses (point card, electricity, Internet, employee salary, etc.), if you want to make money, you can just keep playing... 24 hours, two shifts, one person 12 hours... I've seen it all the time, it's very hard, And without a certain scale, it is extremely difficult to make money. If you really want to do it, you really need to think twice