基于计算机模拟的复采巷道系统优化研究  

Optimization of Remining Roadway System Based on Numerical Simulation

作　　者：赵培琨[1] 王彦辉[1] 

机构地区：[1]保定职业技术学院,河北保定市071000

出　　处：《矿业研究与开发》2017年第11期90-93,共4页Mining Research and Development

基　　金："十二五"国家科技支撑计划项目(2012BAB13B04)

摘　　要：针对复采面回采巷道掘进期间出现的大变形和支护结构破坏的难题,以新庄煤矿331复采面运输巷为研究对象,分析了巷道支护失效原因和巷道布置原则,提出巷道布置优化和巷道支护优化方案,运用UDEC软件对复采巷道系统优化分析。结果表明:系统优化了巷道应力环境,控制了围岩大变形,形成了较为协调的复采巷道系统。实测发现巷道布置在距离护巷煤柱边缘1.0~1.5m时,"全断面锚网梁+梯形棚子支护"方案下掘进期间巷道顶底板、两帮相对移近总量分别为58.4mm和34.5mm;工作面回采期间,顶底板和两帮相对移近量最大值分别为256 mm和228 mm,围岩控制效果较好。Aiming at the problems of large deformation and supporting structure failure of retaining roadway in the process of excavation, the 331 retaining transportation roadway in Xinzhuang Coal Mine was taken as the research object. Then, the fail- tire reasons of roadway support and the roadway layout principles were analyzed. The optimization schemes of roadway layout and support were put forward. Moreover, the remining roadway system was optimized and analyzed by UDEC. The results showed that through the system optimization, the stress environment of roadway was improved, and the large deformation of surrounding rock was controlled, so as to form a coordinated remlning roadway system. Through actual measurement, it was found that the total displacement of the roof-floor rock stratum and two side walls was respectively 58.4 mm and 34.5 mm dur- ing excavating roadway under tile supporting scheme combining the anchor net beam for full section with the trapezoidal shed, when the roadway was located at 1.0- 1.5 m from the edge of protection coal pillar. During sloping tim working face, the maxi- mum displacement of the roof- floor rock stratum and two-side walls was respectively 256 mm and 228 mm, with a better con- trolling effect for surrounding rock.

关 键 词：复采巷道 巷道布置 支护方案 数值模拟 

分 类 号：TD263.53[矿业工程—矿井建设]