大倾角沿空巷道矿压显现规律实测研究

Research on Actual Measurement of the Ground Behavior Law of Gateway Driving Along next Goaf in Steeply Dipping Seam

大倾角煤层沿空巷道因处于显著的各向异性环境中而难以维护。该类型巷道矿压显现规律与近水平沿空巷道明显不同。在现场实测的基础上,采用实测矿压资料和现代矿压理论相结合,对大倾角沿空巷道的矿压进行研究。结果表明,大倾角沿空巷道矿压显现的重要特征是底板呈斜坡状的剧烈底鼓,围岩运动具有明显的各向异性,巷道支护应重视对底鼓的主动控制。

Because of the gateway driving along next goaf in steeply dipping seam being in the dramatic circumstances of anisotropic property, it is very difficult to maintained. The ground behavior law of this kind of gateway has remarkable different with level seam. Based on the in - situ measure, the paper adopts researches the ground behavior of gateway driving along next goaf in steeply dipping seam using data analysis method and combining with the modern theory of ground pressure. The researched result shows that the significant characters of ground pressure in this kind of gateway condition are the floor appearing inclined floor heave. The movement of surrounding rock has apparent anisotropic property. The gateway support should be cared the active control of floor heave.