down-the-hole drilling rig

For the stratum containing large-sized boulders and boulders within the river course, it is relatively difficult to insert Larsen steel sheet piles into the cofferdam of the bridge foundation. Generally, the pre-piloting process is adopted, and the method of piloting holes and the selection of

The drilling process of mining brings a lot of dust pollution. Dust with particles smaller than 10 μm is difficult to settle to the ground after being discharged into the atmosphere, and has a strong adsorption force. Many harmful gases, liquids, and heavy metal elements can be adsorbed on it.

Many industrial raw materials and one-time energy sources are derived from mineral resources. The development and utilization of mineral resources has become a favorable support for domestic economic development. In the process of mining open pit mines, down-the-hole drilling rigs are usually used