Granite stone mining problem

Granite stone is a relatively special stone, which is widely used, so various demands are also relatively large. However, the mining of granite is not so simple, and there are still various problems.

Choose mining method

If the granite is in an open-pit mountain and the thickness of the ore body is large, open-pit mining should be used on the hillside; if the stone is exposed on flat terrain, it is better to use the sunken open-pit mining; if the exposed area is relatively small, and Most of the stone is covered, covered and surrounded, it is necessary to use cave mining or pit mining.

For the mining of granite stone, the sawing method is generally chosen due to the high hardness of this kind of stone; and for the deposits that are acidic or acidic in the rock to form granite, most mechanized mining methods are used. This phenomenon All are rock foundations. **Fortunately, the original joints of the rock mass are used for mining. Generally, the inclination angles in the rock joints are relatively flat, forming a free surface. The direction of the working surface should be parallel to the direction of the longitudinal joints, and then proceed along the joints. , And use flame to cut the layer along the transverse joint, and then use splitting or controlled blasting to separate, and the hole distance and blasting charge are determined by experiments to determine reasonable parameters; then follow the direction of the transverse joint to punch holes, The use of controlled blasting or splitting fragments becomes a block.