开采沉陷预计中三维空间曲面拟合参数的研究  

Research on Fitting Parameters of 3D Surface in Mining Subsidence Prediction

作　　者：李春意[1] 崔希民[2] 何荣[1] 许传阳[1] 

机构地区：[1]河南理工大学测绘与国土信息工程学院,河南焦作454003 [2]中国矿业大学地球科学与测绘工程学院,北京100083

出　　处：《采矿与安全工程学报》2011年第3期420-424,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(41071328);国家重点基础研究发展计划项目(2007CB209400);教育部新世纪优秀人才支持计划项目(NCET-07-0798)

摘　　要：依据实测资料,方便、准确地求取概率积分预计参数,基于三维空间曲面拟合的基本理论,在分析传统参数求取过程中存在问题的基础上,提出采用曲面拟合的方法进行矩形工作面概率积分预计参数的求取,研究了水平偏移系数对半径造成的影响.结果表明,采用曲面拟合方法求参更符合工程实际需要;当开采深度小于500m时,水平偏移系数对半径造成的误差能控制在10%以内,否则,就不能用平均采深代替最大下沉点处的采深.通过对某矿S1-2工作面实测资料的非线性曲面拟合,下沉系数和拐点偏移距拟合精度提高不明显,而下山方向和上山方向的主要影响角正切拟合精度分别提高3.6,6.0%,开采影响传播角系数拟合精度显著提高,达到了13.3%,且不受工作面采动程度的限制.In order to obtain probability integral prediction parameters by using field surveying datum conveniently and accurately,based on 3D surface fitting theory,we put forward a surface fiting method to determine the prediction parameters for mining rectangular face,and study the influence of horizontal offset factor on the major propagation radius,by analyzing existing problems of traditional parameter calculation methods.The results show that surface fitting method is more suitable for engineering practical needs.When the mining depth is less than 500m,the error of major propagation radius influenced by horizontal offset factor can be controlled within 10%,otherwise,the mining depth in maximal subsidence point can＇t be replaced by the mean mining depth.By adopting non-linear surface fitting for field surveying datum of S1-2 working face in one colliery,the fitting precisions of subsidence factor and inflection offset are improved unobviously.However,the tangent fitting precisions of major influence angles in dip and rise directions are increased by 3.6% and 6.0%,respectively.Moreover,the fitting precision of stratum propagation angle factor is apparently increased by 13.3%,and not limited by the mining size of the face.

关 键 词：曲面拟合 预计参数 开采沉陷 拟合精度 

分 类 号：TD325.4[矿业工程—矿井建设]