传统矿柱安全系数计算公式优化研究  

Optimization of Traditional Calculation Formula for Safety Factor of Pillars

作　　者：黄敏 Kulatilake P H S W 罗嗣海[1] 方偏桃 赵聪聪 HUANG Min;Kulatilake P H S W;LUO Si-hai;FANG Pian-tao;ZHAO Cong-cong(School of Resources&Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Changsha Institute of Mining Research Co Ltd,Changsha 410012,Hunan,China;State Key Laboratory of Safety Technology of Metal Mines,Changsha 410012,Hunan,China;Laboratories of Rock Mass Modeling and Computational Mechanics,University of Arizona,Tucson 85721,AZ,USA)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]长沙矿山研究院有限责任公司,湖南长沙410012 [3]金属矿山安全技术国家重点实验室,湖南长沙410012 [4]亚利桑那大学岩体模拟与计算力学实验室,美国亚利桑那州图森85721

出　　处：《矿冶工程》2020年第4期32-37,共6页Mining and Metallurgical Engineering

基　　金：湖南省重大科技专项(2011FJ1003);973计划课题(2010CB735507);国家安全生产监督管理总局安全生产重大事故防治技术科技项目(hunan-0010-2014AQ);湖南省安全生产财政专项资金项目。

摘　　要：从矿柱强度、矿柱所受荷载等多方面对湖南省某铅锌矿采空区矿柱稳定性展开了深入研究,并采用基于面积承载理论及普氏理论对矿区1365根矿柱的安全系数进行了计算与分析,结果表明,2种理论计算出的矿柱安全系数相差较大,且基于面积承载理论的矿柱安全系数计算公式过于保守。通过建立多种空区模型进行三维数值模拟计算与对比分析,并采用Matlab软件拟合出矿柱应力与矿柱间距、矿柱埋深之间的函数关系,最终得到适用于该铅锌矿的矿柱安全系数计算公式。研究结果可为其他类似矿山的矿柱设计、技术服务提供参考。The stability of pillars in the goaf of a lead-zinc mine in Hunan Province was studied from the aspects of pillar strength and pillar load,and the safety factors of 1365 pillars in the mining area were calculated and analyzed based on the area bearing theory and Proctor theory.The results show that the safety factors of pillars calculated by the two methods are quite different,and the calculation formula for safety factors of pillars based on the area bearing theory is too conservative.Then,3 D numerical simulation calculation and comparative analysis were carried out by establishing variety models of mind-out area,and the function relationship between pillar stress,pillar spacing and pillar buried depth was fitted out by Matlab software.Finally,a formula for calculating the safety factor of pillars suitable for this lead-zinc mine was obtained.It is of practical significance to provide reference for the planning and technical services in other similar mines.

关 键 词：采空区 矿柱稳定性 矿柱安全系数 面积承载理论 普氏理论 

分 类 号：TD853[矿业工程—金属矿开采]