基于Mathews稳定图法的采空区稳定性评价  

Stability Evaluation of Stope Based on Mathews Graph Method

作　　者：赵永[1] 杨天鸿[1] 王薪荣 胡高建 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]中冶京诚(秦皇岛)工程技术有限公司,河北秦皇岛066000

出　　处：《东北大学学报（自然科学版）》2016年第1期74-78,共5页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展计划项目(2013CB227902);国家自然科学基金资助项目(51174045;51474051)

摘　　要：针对赤峰红岭铅锌矿多年开采遗留下的80个未处理的采空区问题,通过对该矿山工程地质调查、矿岩力学试验,获取了表征矿山岩体质量的多种指标.依据获取的矿岩力学指标,利用Mathews稳定图法计算出试验采空区的稳定数和水力半径,并通过重新绘制的Mathews稳定图和等概率图的合成图,评价出采空区的稳定性以及稳定概率.利用FLAC^(3D)对试验采空区进行数值模拟,结果与利用Mathews稳定图法评价的结果一致.对不稳定采空区进行了参数优化,并对不稳定采空区提出了支护措施.可通过该方法对红岭铅锌矿所有采空区进行评价,并可为类似矿山提供参考.There are eighty unprocessed mined-out areas in Hongling lead-zinc ore for years of mining. In order to evaluate the stability of the goafs, several kinds of indexes representing the engineering quality of rock mass in mines were acquired by the survey of engineering geology and the ore-bearing rock mechanics experiments. According to the acquired ore and rock mechanics index, the stability number and radius of hydraulic in testing goaf were calculated using the Mathews stability graph method. And stability and probability of the testing goaf were evaluated by rendering synthetic map including the isoprobability contours and the Mathews stability graph. The testing goaf was simulated with FLAC3D, and the results agreed well with the results by using the Mathews stability graph method. The parameters for unstable goaf were optimized, and some supporting measures for the unstable goaf were proposed. This method can be used to evaluate all goafs in Hongling ore and provide reference for the similar mines.

关 键 词：Mathews稳定图 Q系统 采空区稳定性 FLAC^3D 支护设计 

分 类 号：TD862.2[矿业工程—金属矿开采] TD862.3[矿业工程—矿山开采]