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本文根据理论推导及对实测资料的可靠性研究,提出了把岩体视为各向异性、非连续、不均质的介质时,由于开采引起的岩层及地表水平移动的分布规律。研制成功的岩层移动最优化程序YY(用BASIC-PLUS语言)可用于各种地质采矿条件、应用各种函数形式时的实测地表移动变形参数求定和岩层与地表移动变形预计。并应用此程序对我国几个矿区的25个观测站的实测资料进行了数据处理,给出了地表水平移动变形及有关参数计算的经验公式。根据参数求定过程和协方差传播律,本文给出了预计误差的计算公式。根据受护建筑物的重要程度,文中给出了不同移动盆地位置的置信概率为p_u的超载系数的计算方法,从而使预计误差得到控制,极大地提高了地表移动预计的可靠性和针对性。本文适用于冒落法开采的长壁工作面采空区上方的地表移动规律和预计的定性、定量问题和预计的可靠性问题的研究。作为重点,本文对地表水平移动变形规律的研究提出了新的理论、手段和方法,并得到较好的实践证明。
Based on the theoretical deduction and the reliability study of measured data, this paper puts forward the distribution rule of horizontal movement of rock strata and surface caused by mining when the rock mass is regarded as an anisotropic, non-continuous and inhomogeneous media. The developed rock movement optimization program YY (using BASIC-PLUS language) can be used for various geologic mining conditions, determining the measured ground surface moving deformation parameters and predicting the deformation of rock strata and ground surface when using various function forms. The data of 25 observation stations in several mining areas of our country were processed by this program. The empirical formulas of horizontal deformation and calculation of relevant parameters were given. According to the parameters of the process of determination and covariance propagation law, this paper gives the expected error of the formula. According to the degree of importance of the protected buildings, the method of calculating the overload coefficient of the p_u with different probability of location in different moving basins is given in this paper, so that the prediction error is controlled and the reliability and pertinence of the prediction of surface movement are greatly improved. This paper is applicable to the study of the law of surface movement and the expected qualitative and quantitative problems and the expected reliability problems above the gob of the longwall face caving mining method. As a key point, this paper puts forward a new theory, method and method to study the law of surface horizontal movement and deformation, and obtains better practice proof.