工作面胶带巷沿空留巷矿压观测结果及分析

Result and Analysis of Rock Pressure Observation in Working Face Belt Roadway with Gob-Side Entry Retaining

以某煤矿工作面回采巷道沿空留巷为例,分析了沿空留巷后工作面前、后方巷道表面位移以及巷旁支护体的承载与变形规律,并对巷内锚杆的载荷进行了分析研究。结果表明,留巷前以及工作面回采影响期间巷道顶板、两帮及支护体是稳定的。研究结论对进一步推广沿空留巷技术具有借鉴作用。

Taking working face gob-side entry retaining as an example,analyzed the roadway superficial displacement in the front and the rear of the woking face,discussed the supporting body＇s load bearing and distortion rule after gob-side entry retaining, studied the rockbolt load in the drift. The result indicates that the roof,two sides of drift and supporting body are stable before gob-side entry retaining and during the period of mining. This conclusion has the guide sense to promoting the technology of gob-side entry retaining.