控制开采速度减缓建筑物损害程度的方法与应用

发布时间：2018-11-12 08:11

【摘要】：为控制开采过程中地表动态变形强度以减缓开采损害强度,把工作面开采视作一个系统,覆岩与地表移动视作系统的输出,开采速度是影响这个系统输出的唯一外界因素。根据地表移动规律,确定了地表动态变形与开采速度的函数关系,开采速度影响地表移动与变形速度与加速度。应用力学定律分析了地表移动导致建筑物产生附加荷载的主要因素是地表水平移动加速度,且地表水平移动加速度与开采速度的平方成正比。研究结果表明:当提高开采速度时,地表水平移动加速度增大,使地表建筑物受到的附加荷载增加,导致建筑物损害程度加剧,为减缓建筑物开采损害程度,控制开采速度是必要的。为工程技术应用提出了基于概率积分法的开采速度优化控制模型与控制方法,开采实例验证了控制开采速度减缓地表建筑物损害程度的有效性。
[Abstract]:In order to control the dynamic deformation intensity of the surface in order to reduce the mining damage intensity, the mining face is regarded as a system, the overburden and the surface movement are regarded as the output of the system, and the mining speed is the only external factor that affects the output of the system. According to the law of surface movement, the functional relationship between dynamic deformation and mining velocity is determined. Mining speed affects the surface movement, deformation velocity and acceleration. Applying the law of mechanics, it is analyzed that the main factor of the additional load of buildings caused by the surface movement is the acceleration of the horizontal movement of the ground surface, and the acceleration of the horizontal movement of the surface is proportional to the square of the mining speed. The results show that when the mining speed is increased, the acceleration of horizontal movement increases, the additional load on the surface buildings increases, and the damage degree of the buildings is aggravated, in order to slow down the damage degree of the building mining. It is necessary to control the speed of mining. The optimal control model and control method of mining speed based on probabilistic integration method are proposed for engineering technology application. The effectiveness of controlling mining speed to slow down the damage degree of surface buildings is verified by an example of mining.
【作者单位】：山东科技大学;德国亚琛工业大学;德国弗莱贝格矿业科技大学;波兰科学院;
【基金】：德国洪堡基金会(Alexander von Humboldt Foundation)合作资助项目(CHN/1101176STP)
【分类号】：TD325;TU746.1

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