underground coal mining method

基本解释

The paper presents uniform method of evaluation mining geological and technological conditions for application of rock bolting in Polish underground coal mines.
针对波兰煤矿地下开采中的锚杆支护应用实践，提出了统一的采矿地质和技术条件的评价方法。
This paper introduces the design method for a kind of the explosion-division intelligent electromagnetic starter specially used in the fans of the underground coal mining district.
介绍了一种煤矿井下对旋式风机专用隔爆型电磁启动器的设计方法。
This paper analyzed the problems of the belt deviation for belt conveyor of the underground coal-mining, and summarized the corrective method for preventing the belt deviation of the belt conveyor.
针对煤矿井下胶带输送机胶带跑偏问题进行了分析，总结出了输送机胶带防止跑偏的防治方法，对胶带输送机在现场的使用和维护具有一定的实用价值。