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本文采用影响函数的计算机方法,深入研究美国南犹他州燃料公司(SUF_)煤矿地表的沉陷和变形。除考虑了由于靠近盘区回采边界的上复岩层,崩落不充分造成的“补偿区”与原先的老采区的影响外,着重考虑了时间因素问题;突出了盘区回采时,地表的沉陷和变形随回采推进的发展变化,计算和绘图全部计算机化;一个主程序用于计算和绘图,其它一些程序用于参数选择。计算的理论曲线与实例曲线以及相应的数值对比的结果,证明两者在各个回采期都吻合。由于该方法可根据实测结果灵活地选择参数,处理复杂的回采区的影响和考虑时间因素问题,因此它能有效地解决各种与地表移动和变形有关的工程实际问题,本文导出的公式与结论以及设计的程序,对类似的煤矿都普遍适用。
In this paper, a computer-based approach to influence functions is used to study in depth the subsidence and deformation of the surface of the South Utah Fuel Company (SUF_) coal mine. In addition to considering the influence of the “compensation zone” caused by insufficient caving due to the overlying strata near the mining boundary of the plate area and the original old mining area, the time factor was mainly considered; when the panel was mined, the subsidence of the surface And the evolution of deformation as it progresses, all calculations and plots are computerized; one main program is used for calculations and drawings, and others are used for parameter selection. The calculated results of the theoretical curve, the example curve and the corresponding numerical results prove that both of them coincide with each recovery period. Because this method can select parameters flexibly according to the measured results, deal with the influence of complex mining area and consider the time factor, it can effectively solve various engineering problems related to surface movement and deformation effectively. The formulas and conclusions derived in this paper As well as the design process, are generally applicable to similar coal mines.