开采影响地表点变形状态分析及主变形值计算

发布时间：2018-06-15 01:17

本文选题：开采沉陷 + 概率积分法　；参考：《采矿与安全工程学报》2017年01期

【摘要】：为准确掌握地下开采造成的地表点在任意方向上的移动变形状态及主变形值大小,基于概率积分法基本原理分析了地表点在开采影响下的移动变形状态,建立了地表主变形及其方向的计算方法;采用"应变花"思想,构建了已知任意2个不同方向地表倾斜、水平移动计算地表任意方向的倾斜、水平移动及其主变形值和方向的计算模型以及已知任意3个不同方向的曲率、水平变形值计算该点在平面上任意方向的曲率、水平变形、扭曲、剪切及其主变形值和方向的公式。以2个计算案例说明了公式的使用方法及采用地表移动最大值进行建筑物影响等级判断的重要性。"应变花"算法可以计算地表点任意方向的平面变形状态,易于与现有开采沉陷预计程序结合,对准确掌握开采地表移动变形情况、建(构)筑物损害评估及采空区上方抗变形建筑物设计具有指导意义。
[Abstract]:In order to accurately understand the movement deformation state and the main deformation value of the surface points in any direction caused by underground mining, the moving deformation state of the surface points under the influence of mining is analyzed based on the basic principle of probability integral method. In this paper, the method of calculating the principal deformation and its direction of the earth surface is established, and by using the idea of "strain flower", the slope of any two known different directions is constructed, and the inclination in any direction of the surface is calculated by horizontal movement. The calculation model of horizontal movement and its principal deformation value and direction as well as the curvature of any three different directions known. The horizontal deformation value calculates the curvature, horizontal deformation and distortion of the point in any direction on the plane. The formula of shear and its principal deformation value and direction. Two examples are given to illustrate the application of the formula and the importance of using the maximum value of surface movement to judge the influence grade of buildings. " The strain flower algorithm can calculate the plane deformation state of the surface point in any direction, and it is easy to combine with the existing mining subsidence prediction program to accurately grasp the ground surface movement and deformation. The damage assessment of construction and the design of deformable buildings above goaf are of guiding significance.
【作者单位】：中国矿业大学(北京)地球科学与测绘工程学院;中国矿业大学环境与测绘学院;
【基金】：中央高校基本科研业务费项目(2013QD01) 国家科技支撑计划项目(2012BAC10B03) 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室开放基金项目(E21224)
【分类号】：TD325

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