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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。
In order to accurately understand the movement and deformation of ground surface in any direction caused by underground mining and to analyze the movement and deformation state of the ground surface under the influence of mining based on the principle of probability integration method, The calculation model of tilt, horizontal movement and principal deformation value and direction of any surface in any direction with any of two known directions of surface tilt and horizontal movement known to any known two 3 different directions of curvature, horizontal deformation value of the point in any direction of curvature, horizontal deformation, distortion, shear and its main deformation value and direction of the formula. Two calculation cases are given to illustrate the importance of using the formula and judging the influence level of the building using the maximum value of the surface movement. “Accidental flower ” algorithm can calculate the plane deformation state in any direction of the ground surface, easy to combine with the existing mining subsidence prediction program, accurately grasp the movement and deformation of the mining surface, Anti-deformation building design is instructive.