CAJ | 학술논문

由于采掘接替紧张，有的煤矿在上区段回采完毕后不待采空区顶板活动稳定即采取留小煤柱沿空掘巷。在不稳定残余支承压力影响下，巷道掘进期间即出现大变形，给巷道支护带来很大困难。对鲍店煤矿103下03工作面轨道顺槽不稳定残余支承压力影响下沿空掘巷的巷道表面位移、顶板离层和围岩深部位移的监测结果进行了分析，结果表明窄煤柱的变形没有导致悬臂梁的回转失稳，仍起到支撑悬臂梁的作用；窄煤柱塑性变形较大，导致回转岩块支撑点向实体煤壁移动，从而致使巷道实体帮变形加大；巷道上部老顶的稳定情况对巷道变形影响较大。
유우채굴접체긴장，유적매광재상구단회채완필후불대채공구정판활동은정즉채취류소매주연공굴항。재불은정잔여지승압력영향하，항도굴진기간즉출현대변형，급항도지호대래흔대곤난。대포점매광103하03공작면궤도순조불은정잔여지승압력영향하연공굴항적항도표면위이、정판리층화위암심부위이적감측결과진행료분석，결과표명착매주적변형몰유도치현비량적회전실은，잉기도지탱현비량적작용；착매주소성변형교대，도치회전암괴지탱점향실체매벽이동，종이치사항도실체방변형가대；항도상부로정적은정정황대항도변형영향교대。
With intension of mining-excavation relay, roadway with small coal pillar was driven along goaf betbre goaf roof movement was stable after the last stopping face was finished. Under unstable residual abutment pressure, roadway deformation was large even during the driving and the support was difficult. The monitoring results of surface displacement, roof bed separation and deep displacement in 103 下 03 Working Face railway roadway of Baodian Mine are analyzed. The results show that the deformation of narrow coal pillar didn＇t cause cantilever instability and the pillar still supported cantilever. The large plastic deformation of coal pillar caused support point moving towards integrated coal and leaded to deformation increase of integrated coal of roadway. The deformation of roadway was greatly affected by the roof key strata conditions.