CAJ | 학술논문

宋新庄煤矿回风斜井倾角22° ,净断面16. 3 m2 ,斜长1 465 m.井筒掘进至283. 4 m处时 ,突遇层厚8. 3 m、斜长22 m的泥流砂层 ,涌水量15 m3/h ,采用常规方法处理,未能奏效 ,工程被迫停工.根据具体情况 ,经方案比选,确定采用化学注浆技术进行治理.即在工作面 ,向流砂层预注化学浆液 ,进行堵水加固;结合超前支护、短段掘支、强支撑、勤量测等技术措施进行施工.方案实施后 ,安全顺利地通过了含水流砂层段 ,收到了预期效果.
송신장매광회풍사정경각22° ,정단면16. 3 m2 ,사장1 465 m.정통굴진지283. 4 m처시 ,돌우층후8. 3 m、사장22 m적니류사층 ,용수량15 m3/h ,채용상규방법처리,미능주효 ,공정피박정공.근거구체정황 ,경방안비선,학정채용화학주장기술진행치리.즉재공작면 ,향류사층예주화학장액 ,진행도수가고;결합초전지호、단단굴지、강지탱、근량측등기술조시진행시공.방안실시후 ,안전순리지통과료함수류사층단 ,수도료예기효과.
A mine air returning inclined shaft of Songxinzhuang Mine had an inclination of 22° ,a net cross section of 16.3 m2 and an inclined length of 1 465 m.When the mine inclined shaft was headed at length of 283.4 m ,a quicksand stratum with a thickness of 8.3 m and a inclined length of 22 m was suddenly occurred.A water inflow of 15 m3/h was come from the quicksand stratum ,a conventional method was applied to the handling with no effect and the project construction had to stop.According to the certain condition ,with a comparison of the plans ,a chemical grouting technology was deter-mined and applied to the handling of the quicksand stratum. The chemical grout was pre-grouted into the quicksand stratum at the mine inclined shaft heading face and then a water sealing and reinforce-ment were conducted. The combination of the pilot support ,short sectional heading and support ,pow-erful support ,frequent measurements and other technical measures was conducted for the construc-tion. After the plan was implemented ,the mine inclined shaft was safely and successfully passed through the section of the water bearing quicksand stratum with an expected effect.