大采高回撤巷道爆破切顶目标层位优化研究  

Study on Optimization of Blasting Roof Cutting Target Layer in Withdrawal Roadway with Large Mining Height

作　　者：韩震 韩科明 蓝航[1,2] Han Zhen;Han Keming;Lan Hang(China Coal Science and Industry Ecological Environment Science and Technology Co.,Ltd.,Beijing 100013;Tiandi Science and Technology Co.,Ltd.,Beijing 100013)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]天地科技股份有限公司,北京100013

出　　处：《山东煤炭科技》2023年第3期98-100,106,共4页Shandong Coal Science and Technology

基　　金：中国煤炭科工集团有限公司科技创新创业资金专项重点项目-煤基固废协同处置利用关键技术及装备研发(2022-2-ZD004)。

摘　　要：以斜沟煤矿为研究背景,研究切顶层位对回撤巷道矿压显现影响规律,理论分析了回撤通道岩层破断规律,确定不同切顶层位方案,利用数值模拟计算最优切顶层位。研究表明:切顶卸压能够实现顶板岩层运动位态的主动控制,通过改变顶板断裂层位,能有效降低回撤通道的顶板压力和围岩变形,最优切顶高度为21.02 m。Taking Xiegou Coal Mine as the research background,this paper studies the law of the influence of the roof cutting layer on the mine pressure behavior of the withdrawal roadway,theoretically analyzes the law of the rock layer fracture of the withdrawal tunnel,determines different roof cutting layer schemes,and calculates the optimal roof cutting layer by numerical simulation.The research shows that roof cutting and pressure relief can realize the active control of the movement of roof strata,by changing the roof fracture layer,the roof pressure and surrounding rock deformation of the withdrawal tunnel can be effectively reduced,and the optimal roof cutting height is 21.02 m.

关 键 词：大采高 回撤 巷道 切顶 

分 类 号：TD322[矿业工程—矿井建设]