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近年来国内有不少煤矿采用无煤柱开采法,取得了良好的效果。在无煤柱开采中,沿空巷的矿压显观和维护规律是一个很关键的问题。作者根据现场观测资料,分析了采空区上方断裂带岩层的运动规律和巷道围岩应力的变化规律。论述了无煤柱巷道的受力状况,及其矿压显现特征和维护规律,为改进沿空巷的布置和支护形式提供了依据。
In recent years, many domestic coal mines adopt the non-pillar mining method and have achieved good results. In the non-coal pillar mining, underground pressure is obvious and maintenance of law is a key issue. Based on the field observation data, the author analyzes the movement law of the rock strata above the goaf and the law of stress changes of the surrounding rock of the roadway. Discusses the stress situation of the non-pillar roadway, the appearance characteristics and the maintenance law of the mine pressure, and provides the basis for improving the arrangement and supporting form of the roadway along the gob.