矿区铁路下采煤优化设计的数值计算方法  

Numerical Calculation Method of Optimized Designed Coal Mining Under Railway in Mining Area

作　　者：赵军[1,2] 查剑锋[1,2] 李怀展 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221008 [2]国土环境与灾害监测国家测绘地理信息局重点实验室,江苏徐州221116

出　　处：《煤炭工程》2014年第8期15-18,共4页Coal Engineering

基　　金："十二五"国家科技支撑计划资助项目(2012BAB13B03);国家自然科学基金青年基金资助项目(41104011);江苏省高校优势学科建设工程资助项目(PAPDSA1102);河南理工大学矿山空间信息技术国家测绘地理信息局重点实验室开放基金资助项目(KLM201101)

摘　　要：开采沉陷预计是煤炭开采过程中不可缺少的部分,为了研究工作面开采时铁路线地表移动,解决实际开采过程中可能出现的安全隐患,以南屯煤矿为原型,运用FLAC3D数值模拟软件,通过岩样力学参数初始值,利用两轮均匀实验设计,依据该煤矿已有的采区地表沉陷监测数据,建立采区数值计算模型,对工作面上方受开采影响的铁路进行了数值模拟研究与分析。采用相同地质参数模型研究与分析附近工作面在三种不同开采设计方案下,对新建跨铁路桥的影响程度,从而推出最佳的开采方案。A prediction of a mining subsidence would be an indispensable part in a coal mining process. In order to study a surface ground movement of the railway line during the mining operation of the coal mining face and to solve a safety hidden danger possibly occurred in the actual mining process, based on Nantun Mine as a prototype, a FLAC^3D numerical simulation software was applied to establish a numerical calculation model of the mining block to the numerical simulation study and analysis on the surface ground of the railway line affected by the underground mining, with the initial values of the rock sample mechanics parameters and a design of a two wheel well - distributed experiment, according to the available surface ground subsidence monitoring and measuring data of the mining block in the mine. The same geological parameter model was applied to study and analyze a neighboring coal mining face under three different mining designed plans affected to a new bridge flyover of a railway line and thus a optimum mining plan was provided.

关 键 词：开采沉陷预计 数值模拟 力学参数 跨铁路桥下采煤 

分 类 号：TD823.83[矿业工程—煤矿开采]