Open pit blasting and drilling machine

1. Large scale open-pit mine drilling is called cone drill (diameter more than 200 mm, explosive directly filled into the hole), underground (tunnel) is called pneumatic drill. I wonder if you are satisfied!

2. There are many iron mines in Xinzhuang Town and Chakou Town, weathered sand and feldspar in Miaoshan, limestone in Yanzhuang town and quarry in Gaozhuang town. I don't know what kind of mine you are asking.

3. It shows that when drilling and blasting on the ground, the location around the coal mine is shaken, resulting in the risk of geographical fracture and collapse.

4. It mainly depends on the geological conditions and the technical quality of large-scale engineering

5. They are doing seismic wave exploration, which is a kind of geophysical method

6. In the total cost of open-pit mining, the cost of blasting engineering accounts for% 15 to% 20 in metal mines and about% 10 in coal mines. As mentioned above, blasting engineering not only plays an important role in the total cost, but also directly or indirectly affects each process of mining proction; The quality of blasting work, to a large extent, determines the proction, safety and work quality of open-pit mine.

7. It's really less work<

generally, they look for jobs through the introction of acquaintances

but it's not necessarily so far. It's starting to change. You put your work experience online. It's totally possible to find a job online. No problem

many websites are OK. Try it and good luck

8. It's more than ten years since coal miners went down the well. You have some experience in drilling and blasting. It seems that we all know this is a very good thing, which shows that you are very professional. Although you are a coal miner, you will be very outstanding here, which is worthy of praise.

9. There are two main methods of underground coal roadway construction, blasting and comprehensive excavation. The details are as follows: 1. Blasting, that is, drilling and blasting, first drilling holes in the excavation wall, generally divided into three holes, five holes and other types, after drilling holes, hole cleaning, after acceptance, loading blasting coil, lead wire, etc., withdrawing personnel, sending signals, detonating, excluding squib, personnel entering, It is characterized by many links, many constraints, high labor intensity and mature technology; 2. Comprehensive excavation, that is, comprehensive mechanized excavation technology, using roadheader for excavation and supporting conveyor belt conveyor for coal and rock transportation, has the advantages of low labor intensity, high excavation efficiency and fast progress.

10. What you said is too general. If the driving footage of a coal mine is advanced, it depends on drilling and blasting, and then fully mechanized mining machine. If there are blasting mining, high-grade common mining (out of date) and fully mechanized mining, blasting mining is drilling and blasting, and then using people to carry shovels into the car. The advanced point is that fully mechanized mining is cut by coal cutter, and then the coal enters the car and is pulled away by itself.