深埋富水泥质粉砂岩地层泥水与土压平衡盾构施工分析  

Analysis of mud-water and soil pressure balance shield construction in deep cement-rich siltstone formation

作　　者：龚斌 GONG Bin(Guangdong NO.2 Hydropower Engineering Company,Ltd.,Guangzhou 511300,China)

机构地区：[1]广东水电二局股份有限公司,广东广州511300

出　　处：《中国高新科技》2024年第3期140-142,共3页

摘　　要：通过分析深埋富水地层泥水盾构与土压盾构掘进影响因素,针对影响因素采取针对性措施,克服土压平衡盾构在深埋富水地层中螺旋机易喷涌、设备易出现故障、出渣困难、渣土处理困难的难题;克服泥水平衡盾构在深埋富水地层中环流不畅、结泥饼的难题。通过对比分析及实际验证得出在深埋富水地层中泥水平衡盾构更具优势的结论,采取的措施及在此类施工工况下盾构设备选型可供类似工程进行参考。By analyzing the influencing factors of mud shield and earth pressure shield tunneling in deep water-rich strata,the relevant measures are taken to overcome the problems of the earth pressure balance shield tunneling in deep water-rich strata,such as the spouting of the screw,the equipment failure,the dificulty of slag discharge and the dificulty of slag treatment.To overcome the problems of poor circulation and mud cake formation of mud-water balanced shield in deep-buried water-rich strata.Through comparative analysis and practical verification,it is concluded that the mud-water balance shield is more advantageous in deep-buried water-rich strata.The measures taken and the selection of shield equipment under such construction conditions can be used as reference forsimilarprojects.

关 键 词：深埋富水 泥质粉砂岩 盾构出渣 泥水盾构滞排 土压盾构喷涌 

分 类 号：U455[建筑科学—桥梁与隧道工程]