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地下矿床开采后围岩中的应力与位移分布规律是人们非常关心的问题。本文围绕急倾斜脉状矿床留矿法开采,以某钨矿为实例,结合钨矿的普遍特点,应用边界无法研究与编制了TEW-Ⅰ,TEW-Ⅱ边界元程序,依此进行了总数达53个模型的计算,同时用国内目前比较公认的YPZ-2有限元程序,对其中的4个模型进行了校核。这批模型研究了十个方面的基本问题,较为系统、全面地探讨了这种矿床类型留矿法开采后围岩中的应力与位移分布的基本规律。本文是这十个问题之中的一个,重点探讨在一个中段开采和双采场条件下,随采空场间距(或夹墙厚度)变化而引起的应力与位移分布变化的规律。
The distribution of stress and displacement in the surrounding rock after underground mining is a matter of great concern to people. This paper focuses on the mining of steeply inclined vein-like ore deposits. Taking a tungsten ore as an example and combining with the general characteristics of tungsten ore, it is impossible to study and compile the boundary element program of TEW-I and TEW-II using the boundary. 53 models of the calculation, at the same time with the domestic relatively well-known YPZ-2 finite element program, of which four models were checked. These models studied ten basic issues and systematically and comprehensively discussed the basic laws of stress and displacement distribution in the surrounding rock after the ore-retention method was exploited. This article is one of these ten questions, focusing on the variation of the distribution of stress and displacement with the change of the mined-out distance (or the thickness of the wall) under the condition of a middle section of mining and double-stope.