摘要
为了研究地应力对深部煤层开采底板破坏深度的控制效应,论述了地应力随地层埋深不断增加而增大的分布规律,分析了地应力、矿山压力和底板突水的内在关系,通过室内岩石应力、应变和破坏特征实验研究,结合国内现场底板破坏深度统计资料分析,得出了地应力对深部煤层开采底板损伤破坏深度具有明显的控制效应,并提出了深部煤层开采底板破坏深度计算公式。
In order to study on mechanism of in-situ stress control on the coal floor damage during deep coal seam mining,the internal relationship among ground stress,mine pressure and floor water inrush was analyzed base on the increasing distribution rule of ground stress with the increasing depth of stratum.It is shown that the stress on the deep coal seam has obvious control effect on the depth of the floor damage and failure through the experimental study and the statistical analysis of the measured data of the mining damage depth of the coal seam floor.And the calculation formula for the depth of the floor failure in the deep seam mining was put forward.
作者
田干
Tian Gan(Xi′an Research Institute Co.,Ltd.,China Coal Technology and Engineering Group Corp.,Xi′an 710077,China;Shaanxi Key Laboratory of Coal Mine Water Disaster Prevention and Control Technology,Xi′an 710177,China)
出处
《能源与环保》
2022年第1期273-280,288,共9页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家重点研发计划课题(2017YFC0804106)。
关键词
深部煤层
地应力
破坏深度
控制效应
deep coal seam
in-situ stress
failure depth
control effect
