承压富水软土地层中暗挖车站下穿运营车站的水平MJS加固  

Horizontal MJS Reinforcement of Underground Excavated Station Tunnel Passing Through Operating Station in Confi ned Water Rich Soft Soil Layer

作　　者：王中兵 王自强 WANG Zhongbing;WANG Ziqiang(Shanghai Guanglian Environmental&Geotechnical Engineering Co.,Ltd.,Shanghai 200444,China)

机构地区：[1]上海广联环境岩土工程股份有限公司,上海200444

出　　处：《建筑施工》2022年第7期1489-1492,共4页Building Construction

摘　　要：结合工程实际,对承压富水软土地层中暗挖隧道下穿运营车站的全方位高压旋喷注浆(MJS)水平加固技术进行了研究。水平MJS加固时,通过对引孔偏斜度、地内压力主空气流量和压力、喷射浆液流量和压力、摆喷角度等的有效控制,提高了暗挖段承压富水软土地层的强度和承载力,降低了渗透性,保证了既有运营车站的安全。Combined with the engineering practice,the omni-directional metro jet system(MJS)horizontal reinforcement technology for the underground excavated tunnel passing through the operating station in the confined water rich soft soil layer is studied.During the horizontal MJS reinforcement,the strength and bearing capacity of the confined water rich soft soil layer in the concealed excavation section are improved,the permeability is reduced,and the safety of the existing operating station is ensured through the effective control of the deviation of the approach hole,the main air flow and pressure in the ground pressure,the flow and pressure of the sprayed slurry,and the swing spraying angle.

关 键 词：承压水 软土 水平MJS 喷射注浆 

分 类 号：TU753[建筑科学—建筑技术科学]