综采工作面回撤通道矿压观测研究

Observation of Underground Pressure in Dismantling Channel of Full-mechanized Mining Face

针对煤层松软破碎顶板条件,对工作面末采期主回撤通道围岩变形和垛式支架工作阻力进行现场观测,分析研究了通道顶板来压显现规律及其围岩变形破坏特征。提出在工作面距主回撤通道9m前应完成对巷道的加强支护,并提高垛式支架工作阻力,进一步改进两帮支护形式等建议。

For the condition of soft coal and cracked roof, on-the-spot observation of surrounding rock deformation and working resistance of corduroy in dismantling roadway during end-mining are finished. Underground pressure behavior rule and deformation and broken characteristic of surrounding rock are analyzed in this paper. Follow suggestions are put forward. Reinforcing supporting should be finished before mining face is 9m far away main dismantling channel. Working resistance of corduroy should be added and supporting structure of two sides should be improved further.