摘要
本文根据四个不同回采参数试采面的钻孔注(放)水试验资料,研究了每个采面底板采动破坏深度和强度,分析了采面斜长、采高与底板采动破坏深度的关系,查明厚煤层分层开采时,底板破坏程度主要取决于第一分层,为改革采煤方法安全带压开采提供了依据。
In this paper, on the basis of the fest data of water-injection (water-discharging) through boreholes in the coal floor of the four faces with different mining parameters respectively, the depth and intensity of floor failure due to the mining activity in each face are studied. The relationship between the face length, the extraction height and the broken depth of floor is analysed. It is found out that the failure degree of the floor depends on the 1st clice when thick seam is mined by slicing system. This provides a basis for reforming the mining method to make safe mining with the water pressure.
出处
《山东矿业学院学报》
CAS
1993年第1期45-49,共5页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
缓倾斜煤层
底板
岩层移动
回采
gently-inclined seam
seam floor
rock strata movement
