沿底留顶煤回采巷道断面形状优化数值模拟研究  

Numerical Simulation Study on Optimization of along Floor for Top Coal Mining Roadway Section Shape

作　　者：蒲志强[1,2] 常庆粮[3,2,4,5] 

机构地区：[1]淄博矿业集团有限责任公司岱庄煤矿,山东济宁272175 [2]山东省充填开采工程技术研究中心,山东淄博255000 [3]淄博矿业集团有限责任公司博士后流动站,山东淄博255000 [4]中国矿业大学矿业工程学院,江苏徐州221116 [5]中国矿业大学深部煤炭资源开采教育部重点实验室,江苏徐州221116

出　　处：《煤炭技术》2016年第5期15-17,共3页Coal Technology

基　　金：泰山学者建设工程专项经费资助项目(201309)

摘　　要：以某矿沿底留顶煤回采巷道为研究对象,采用理论分析和FLAC2D数值模拟为主要方法,分析了矩形、直墙半圆形和圆形3种断面形状对巷道围岩塑性区发育特征、应力分布特征和围岩变形特征的影响。直墙半圆拱形断面与圆形断面比较而言,围岩塑性区发育范围、应力分布特征和变形特征降低程度减小;针对沿底留顶煤回采巷道而言,直墙半圆拱形断面是较优断面形式。Mining roadway along the coal seam bottom and with remaining roof coal was selected as study object. Theoretical analysis and FLAC2D numerical simulation were adopted as research method for studying the roadway＇s stability characteristic that rock plastic region and stress distribution and rock deformation characteristic in situation of rectangle and straight wall semicircle arch and circle. Compering straight wall semicircle arch with circle,the reducing degree of rock plastic region and stress distribution and deformation characteristic decrease. So the straight wall semicircle arch is the better shape for mining roadway along the coal seam bottom and with remaining roof coal.

关 键 词：沿底掘进 回采巷道 断面形状 

分 类 号：TD823.4[矿业工程—煤矿开采]