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水体下急倾斜煤层开采防水煤柱的应力特征分析,是研究合理防水煤柱尺寸的前提。随着煤层采深的增加,急倾斜煤层开采原岩水平应力也逐渐增大,其大小对防水煤柱的稳定性有较大影响。
Analysis of stress characteristics of water-proof coal pillar mining in steeply inclined coal seam is a prerequisite to study the size of water-proof coal pillar. With the increase of coal mining depth, the horizontal stress of original rock in the mining of steep coal seam is also gradually increased, and its size has a great influence on the stability of waterproof coal pillar.