我矿白马采区是缓倾斜矿体,厚度1～7米不等。过去对中厚矿体区段采用长壁法开采,劳动强度大、工效低、坑木消耗高,而且顶板管理困难。无产阶级文化大革命以来,我矿工人、干部、技术人员在党的领导下,组织了三结合试验组,对这类矿体的开采方法进行了试验研究,革新攻关。几年来,我们先后采用过长壁法、房柱 My mine white horse mining area is gently inclined ore body, the thickness of 1 to 7 meters. In the past, the long-wall mining method was applied to the section of moderate-thick ore body, which resulted in high labor intensity, low work efficiency, high consumption of pit pits, and difficult roof management. Since the Great Proletarian Cultural Revolution, under the leadership of the party, miners, cadres and technicians have organized a three-pronged experimental group to conduct experiments and research on the mining methods for such ore bodies and to make innovations. Over the past few years, we have adopted the long wall method, post