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A platform for research: civil engineering, architecture and urbanism
Precipitation system and precipitation operation method for deep foundation pit close to building
According to the dewatering system for the deep foundation pit close to the building and the dewatering operation method, a floor type waterproof curtain is arranged outside the side, adjacent to the building, of an underground diaphragm wall on the periphery of the deep foundation pit, a dewatering influence area outside the foundation pit is isolated from the building, and the influence on the building in the dewatering process of the deep foundation pit is reduced; a plurality of pressurized recharge wells are arranged between the underground diaphragm wall and the waterproof curtain, and a plurality of normal-pressure recharge wells are arranged between the waterproof curtain and the building; in the construction process of the deep foundation pit, rainfall in the foundation pit is recharged to a confined water layer between an underground diaphragm wall and a waterproof curtain through a pressurizing recharge well and is recharged to a phreatic water layer and the confined water layer of the area where the building is located through a normal-pressure recharge well, and the pore water pressure in the phreatic water layer and the water head pressure in the confined water layer of the area where the building is located are maintained; the influence of deep foundation pit dewatering on building settlement is improved; as the floor type waterproof curtain and the underground diaphragm wall are separated and are short, the floor type waterproof curtain and the underground diaphragm wall can be constructed at the same time, and the construction period and the engineering cost of the deep foundation pit dewatering engineering are greatly shortened.
一种临近建筑深基坑降水系统及降水作业方法，在深基坑周边地连墙与建筑物相邻侧外部设置落地式止水帷幕，将基坑外降水影响区与建筑物隔离，减小深基坑降水过程中对建筑物影响；地连墙与止水帷幕之间设置有若干加压回灌井，止水帷幕与建筑物之间设置有若干常压回灌井；深基坑施工过程中，基坑内降水通过加压回灌井回灌至地连墙与止水帷幕之间的承压水层，通过常压回灌井回灌至建筑物所在区域的潜水层和承压水层，维持建筑物所在区域潜水层中孔隙水压力和承压水层中水头压力，改善深基坑降水对建筑物沉降的影响；由于落地式止水帷幕与地连墙分离设置且长度较短，两者可同时进行施工，极大缩短了深基坑降水工程施工周期和工程成本。
Precipitation system and precipitation operation method for deep foundation pit close to building
According to the dewatering system for the deep foundation pit close to the building and the dewatering operation method, a floor type waterproof curtain is arranged outside the side, adjacent to the building, of an underground diaphragm wall on the periphery of the deep foundation pit, a dewatering influence area outside the foundation pit is isolated from the building, and the influence on the building in the dewatering process of the deep foundation pit is reduced; a plurality of pressurized recharge wells are arranged between the underground diaphragm wall and the waterproof curtain, and a plurality of normal-pressure recharge wells are arranged between the waterproof curtain and the building; in the construction process of the deep foundation pit, rainfall in the foundation pit is recharged to a confined water layer between an underground diaphragm wall and a waterproof curtain through a pressurizing recharge well and is recharged to a phreatic water layer and the confined water layer of the area where the building is located through a normal-pressure recharge well, and the pore water pressure in the phreatic water layer and the water head pressure in the confined water layer of the area where the building is located are maintained; the influence of deep foundation pit dewatering on building settlement is improved; as the floor type waterproof curtain and the underground diaphragm wall are separated and are short, the floor type waterproof curtain and the underground diaphragm wall can be constructed at the same time, and the construction period and the engineering cost of the deep foundation pit dewatering engineering are greatly shortened.
一种临近建筑深基坑降水系统及降水作业方法，在深基坑周边地连墙与建筑物相邻侧外部设置落地式止水帷幕，将基坑外降水影响区与建筑物隔离，减小深基坑降水过程中对建筑物影响；地连墙与止水帷幕之间设置有若干加压回灌井，止水帷幕与建筑物之间设置有若干常压回灌井；深基坑施工过程中，基坑内降水通过加压回灌井回灌至地连墙与止水帷幕之间的承压水层，通过常压回灌井回灌至建筑物所在区域的潜水层和承压水层，维持建筑物所在区域潜水层中孔隙水压力和承压水层中水头压力，改善深基坑降水对建筑物沉降的影响；由于落地式止水帷幕与地连墙分离设置且长度较短，两者可同时进行施工，极大缩短了深基坑降水工程施工周期和工程成本。
Precipitation system and precipitation operation method for deep foundation pit close to building
一种临近建筑深基坑降水系统及降水作业方法
QIAN XIAOHUA (author) / FANG XIANG (author) / SUN WENFENG (author) / TANG LICHENG (author) / ZHAI LIANKUANG (author) / SUN PENGTAO (author) / WU HUIXIAN (author) / SHI HAOTIAN (author) / WANG XIAORUI (author) / XIAO JIANHANG (author)
2024-12-10
Patent
Electronic Resource
Chinese
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