Pre-blasting相关论文
Experimental investigation on the movement mechanism of top coal in steeply inclined ultra-thick coa
The pre-blasting zones have a significant influence on the coal broken and the recovery rate of the top coal caving mini......
急倾斜高阶段煤体综放开采技术复杂,结合神新公司苇湖梁煤矿+579E2EB1+2急倾斜(64—69°)厚煤层(32.9m)高阶段(102m)综放工作面顶煤超前......