富水砂层全断面注浆(旋喷止水加固)法在近距下穿重大风险源施工中的应用  

APPLICATION OF METHOD OF GROUTING IN WHOLE SECTION OF WATER-RICH SAND LAYER(ROTATION-JET WATER-PROOF REINFORCEMENT)IN CONSTRUCTION OF SHORT-DISTANCE UNDERCROSSING OF MAJOR RISK SOURCES

作　　者：田兴举 郭泽雄 郭扬 TIAN Xing-ju;GUO Ze-xiong;GUO Yang(BCEG Civil Engineering Co.,Ltd.,100015,Beijing,China)

机构地区：[1]北京建工土木工程有限公司,北京100015

出　　处：《建筑技术》2020年第7期859-861,共3页Architecture Technology

摘　　要：北京通州区文化旅游区云瑞南街西段地下综合管廊暗挖段施工中,针对富水砂层不良地质情况下近距下穿南水北调通州支线重大风险源,采取高压旋喷桩全断面加固技术,监测结果表明,监测点累计变化量未达到预警值,保证了支线管道结构及阀井安全,隧道安全下穿既有管线。The underground comprehensive pipe gallery subsurface excavation at west part of Yunrui South Street in Bejing Tongzhou Culture and Tourism Zone passes through under the nearby Southto-North water diversion project Tongzhou branch in the adverse water-rich sand stratum which is a big potential risk.It was determined to adopt high-pressure rotary spraying pile full cross-section strengthening technique.The monitoring result showed that the accumulated variation of the monitoring point didn’t reach the alarm value,the branch pipeline structure and valve well were safe and the tunnel safely passed through under the existing pipeline.

关 键 词：旋喷加固 富水砂层 综合管廊 

分 类 号：TU753[建筑科学—建筑技术科学]