中国水能及电气化
中國水能及電氣化
중국수능급전기화
CHINA HYDROPOWER & ELECTRIFICATION
2014年
12期
15-18
,共4页
引水隧洞%灌浆加固%超细水泥浆%化学材料灌浆
引水隧洞%灌漿加固%超細水泥漿%化學材料灌漿
인수수동%관장가고%초세수니장%화학재료관장
water diversion tunnel%grouting reinforcement%ultrafine cement grout%chemical material grouting
科卡科多水电站引水隧洞以火山岩和侵入岩为主，岩石性脆且易破碎。2014年1月TBM掘进过程中受多条断层破碎带的影响而发生卡机故障，为了使TBM脱困，施工方对断层破碎带内的围岩进行了灌浆加固处理，开挖辅助作业洞，选择GU超细水泥浆和YDS-40高渗透环氧化学材料进行复合灌浆，灌浆结束后通过钻芯检查进行质量评价，通过灌浆加固围岩，使TBM顺利脱困，掘进工作得以继续进行。
科卡科多水電站引水隧洞以火山巖和侵入巖為主，巖石性脆且易破碎。2014年1月TBM掘進過程中受多條斷層破碎帶的影響而髮生卡機故障，為瞭使TBM脫睏，施工方對斷層破碎帶內的圍巖進行瞭灌漿加固處理，開挖輔助作業洞，選擇GU超細水泥漿和YDS-40高滲透環氧化學材料進行複閤灌漿，灌漿結束後通過鑽芯檢查進行質量評價，通過灌漿加固圍巖，使TBM順利脫睏，掘進工作得以繼續進行。
과잡과다수전참인수수동이화산암화침입암위주，암석성취차역파쇄。2014년1월TBM굴진과정중수다조단층파쇄대적영향이발생잡궤고장，위료사TBM탈곤，시공방대단층파쇄대내적위암진행료관장가고처리，개알보조작업동，선택GU초세수니장화YDS-40고삼투배양화학재료진행복합관장，관장결속후통과찬심검사진행질량평개，통과관장가고위암，사TBM순리탈곤，굴진공작득이계속진행。
Coca Codo hydropower station water division tunnel is mainly composed of volcanic rocks and intrusive rocks which are brittle and easily broken. Machine blocking failure occurred due to the influence of many fault fracture zones in TBM tunneling process in January 2014. Construction party conducted grouting and reinforcement treatment on the surrounding rock in the fault fracture zones in order to recover TBM from trouble. Auxiliary operation openings are excavated. GU ultrafine cement grout and YDS-40 high permeability epoxy chemical materials are selected for composite grouting. Quality is assessed through drill core inspection after grouting is completed. TBM is successfully rescued from trouble through grouting and reinforcing surrounding rock. Excavation work can be conducted continuously.
