A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Negative pressure well group dewatering construction method for shield subway launching and receiving well
The invention relates to the technical field of shield wells, and particularly relates to a negative pressure well group dewatering construction method for a shield subway launching and receiving well. The negative pressure well group dewatering construction method comprises the following steps that S1, a water flushing method is adopted for hole forming; S2, a well pipe is lowered; S3, the well pipe is righted, and filter materials are filled; S4, well flushing is conducted; S5, a wellhead sealing structure is installed; S6, a circular well chamber is built; S7, a water pump, a vacuum pump and a water tank are installed; S8, a pumping test is conducted; and S9, uninterrupted water pumping is conducted. According to the negative pressure well group dewatering construction method, the problem of residual water unwatering of interfaces of a fine-particle weak permeable saturated soil layer and an aquifer is solved, meanwhile, the position of a foundation pit dewatering well group is designed and optimized, and the overall dewatering efficiency of a foundation pit is improved. The negative pressure well group dewatering construction method is mainly applied to the negative pressure well group dewatering aspect of the shield subway launching and receiving well.
本发明涉及盾构井技术领域，更具体而言，涉及盾构地铁始发接收井的负压井群降水工法。包括以下步骤:S1、采用水冲法成孔；S2、下放井管；S3、扶正井管，填滤料；S4、洗井；S5、安装井口密封结构；S6、砌筑圆形井室；S7、安装水泵、真空泵和水箱；S8、进行抽试；S9、进行无间断抽水。本工法解决了细颗粒弱透水饱和土层和含水层界面残留水疏干问题，同时，本工法对基坑降水井群的位置进行设计优化，提高基坑整体降水效率。本发明主要应用于盾构地铁始发接收井的负压井群降水方面。
Negative pressure well group dewatering construction method for shield subway launching and receiving well
The invention relates to the technical field of shield wells, and particularly relates to a negative pressure well group dewatering construction method for a shield subway launching and receiving well. The negative pressure well group dewatering construction method comprises the following steps that S1, a water flushing method is adopted for hole forming; S2, a well pipe is lowered; S3, the well pipe is righted, and filter materials are filled; S4, well flushing is conducted; S5, a wellhead sealing structure is installed; S6, a circular well chamber is built; S7, a water pump, a vacuum pump and a water tank are installed; S8, a pumping test is conducted; and S9, uninterrupted water pumping is conducted. According to the negative pressure well group dewatering construction method, the problem of residual water unwatering of interfaces of a fine-particle weak permeable saturated soil layer and an aquifer is solved, meanwhile, the position of a foundation pit dewatering well group is designed and optimized, and the overall dewatering efficiency of a foundation pit is improved. The negative pressure well group dewatering construction method is mainly applied to the negative pressure well group dewatering aspect of the shield subway launching and receiving well.
本发明涉及盾构井技术领域，更具体而言，涉及盾构地铁始发接收井的负压井群降水工法。包括以下步骤:S1、采用水冲法成孔；S2、下放井管；S3、扶正井管，填滤料；S4、洗井；S5、安装井口密封结构；S6、砌筑圆形井室；S7、安装水泵、真空泵和水箱；S8、进行抽试；S9、进行无间断抽水。本工法解决了细颗粒弱透水饱和土层和含水层界面残留水疏干问题，同时，本工法对基坑降水井群的位置进行设计优化，提高基坑整体降水效率。本发明主要应用于盾构地铁始发接收井的负压井群降水方面。
Negative pressure well group dewatering construction method for shield subway launching and receiving well
盾构地铁始发接收井的负压井群降水工法
WANG XIAOJUN (author) / LI HONGFEI (author) / TIAN GUORUI (author) / XING LUMING (author) / WU YUJIAO (author) / LIU YANG (author)
2021-04-09
Patent
Electronic Resource
Chinese
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