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本文采用三维相似材料模拟实验方法,研完了长壁回采工作面周围煤体上和矸石上的支承压力分布规律,包括超前支承压力沿工作面长度方向的分布,侧向支承压力随工作面推进的发展过程,支承压力叠加规律,采空区压力分布及其与顶板运动的关系。还对支承压力在底板中的传播、煤层顶板应力分布状况作了初步研究。三维相似模型的应用,比较全面地揭示了采场围岩的矿山压力分布,为煤矿巷道布置与维护、冲击地压的预测与防治及开采程序设计等重大技术问题提供了基础。
In this paper, using three-dimensional simulation of similar materials experimental method, finished the long-wall mining face around the coal and gangue pressure on the distribution of support, including the advance bearing pressure distribution along the length of the working face, lateral bearing pressure with the advancing Development process, law of superposition pressure, pressure distribution in goaf and its relationship with roof movement. Propagation of bearing pressure in the floor, the stress distribution of the roof of coal seam was also made a preliminary study. The application of three-dimensional similarity model reveals the pressure distribution of mine surrounding rock in a more comprehensive way, which provides a basis for major technical problems such as mine roadway layout and maintenance, prediction and prevention of rock burst and mining program design.