某矿综放小煤柱工作面开采矿压监测与控制  

Mining Pressure Monitoring and Control of Fully Mechanized Caving Small Coal Pillar Working Face in a Mine

作　　者：王晓杰 WANG Xiaojie(Shandong Energy Xinwen Mining Inner Mongolia Energy Co.,Ltd.)

机构地区：[1]山东能源新矿内蒙古能源有限责任公司,内蒙古自治区鄂尔多斯市016200

出　　处：《现代矿业》2025年第3期100-104,108,共6页Modern Mining

摘　　要：为解决巷道围岩破碎和不同采掘阶段支护方案不合理等问题,以某矿11201工作面为研究背景,对留小煤柱条件下的矿压显现规律进行研究。采用现场实测的方法,对回采进程中支架载荷及下区段沿空巷道顶板离层量进行监测,得出老顶初次来压步距为30.0~51.6 m,周期来压步距为16.50~26.24 m,平均周期来压步距为21.60 m。将收集到的巷道顶底板及两帮位移量的变化情况进行分析,对设计的围岩支护方案进行合理性验证,并根据采掘交锋不同阶段的动压影响,提出针对性的围岩控制措施。应用结果表明,工作面所选液压支架可以满足正常生产要求,采掘交锋阶段的巷道围岩形变量均处在一个较合理的范围内,因此认为所设计的围岩控制方案合理。In order to solve the problems of broken surrounding rock of roadway and unreasonable sup-port scheme in different mining stages,taking 11201 working face of a mine as the research background,the law of mining pressure appearance under the condition of small coal pillar is studied.By using the meth-od of field measurement,the support load and the roof separation amount of the lower section along the goaf roadway in the mining process are monitored.It is concluded that the first weighting step distance of the main roof is 30.0~51.6 m,the periodic weighting step distance is 16.50~26.24 m,and the average period-ic weighting step distance is 21.60 m.The collected changes in the displacement of the roof and floor of the roadway and the two sides are analyzed,and the rationality of the designed surrounding rock support scheme is verified.According to the influence of dynamic pressure at different stages of mining and excavation con-frontation,targeted surrounding rock control measures are proposed.The application results show that the hydraulic support selected in the working face can meet the requirements of normal production.The deforma-tion of the surrounding rock of the roadway in the mining and excavation confrontation stage is within a rea-sonable range,so it is considered that the designed surrounding rock control scheme is reasonable.

关 键 词：煤柱 采掘交锋 矿压观测 围岩控制 

分 类 号：TD3[矿业工程—矿井建设]