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本文是用碎块体理论研究由于地下开采引起的岩层和地表移动的基本规律的初步尝试。岩体被看作是一种各向异性的不连续的随机介质,是碎块体单元的集合。本文根据碎块体理论导出了表征岩层和地表移动的基本微分方程式,提出了影响函数的筛选法,确定了威布尔分布密度函数是最佳的影响函数形式。本文对用威布尔分布型影响函数进行地表移动预计的原理和方法做了系统的说明,说明了有关的电子计算机计算程序的使用方法,计算并分析了枣庄矿区十一个观测站的资料,证明了本文提出的理论和方法的合理性和可行性,并得出了一些有用的结论。本文还研究了影响预计可靠性的主要因素并提出了对预计结果加超载系数等相应的改进措施。
This paper is a preliminary attempt to study the basic laws of rock mass and surface movement caused by underground mining using the theory of fragmentation. Rock mass is regarded as an anisotropic discontinuous random medium, which is a collection of fragments. In this paper, we derive the basic differential equation that characterizes the rock mass and surface movement according to the fragmentation theory and propose a screening method of influencing function, and determine that the Weibull distribution density function is the best form of the influence function. This paper gives a systematic description of the principle and method of predicting surface movement using Weibull distributed influence function, explains how to use the relevant computer program, calculates and analyzes the data of eleven observation stations in Zaozhuang mining area, The rationality and feasibility of the theory and method proposed in this paper, and draw some useful conclusions. This paper also studies the main factors affecting the expected reliability and proposes corresponding improvements to the predicted results plus the overload coefficient.