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A platform for research: civil engineering, architecture and urbanism
Underground diaphragm wall and micro-disturbance all-dimensional jet grouting pile combined water stopping method
The invention discloses an underground diaphragm wall and micro-disturbance all-dimensional jet grouting pile combined water stopping method. The method comprises the following steps that S1, a plurality of embedded steel pipes 21 are installed on a steel reinforcement cage, the bottoms of the embedded steel pipes 21 are closed, and the embedded steel pipes 21 enter a groove along with the steel reinforcement cage and are poured into an underground diaphragm wall; S2, in the foundation pit excavation process, the bottoms of the embedded steel pipes 21 are drilled through by a drilling machine,and the interiors of the embedded steel pipes 21 are made to communicate with water outside the underground continuous wall; S3, the embedded steel pipes 21 serve as water level observation holes ofunderground water, and whether streaming occurs at the bottom of the underground diaphragm wall or not is monitored; and S4, after the phenomenon that streaming occurs at the bottom of the undergrounddiaphragm wall is judged, the embedded steel pipes 21 serve as grouting holes of micro-disturbance all-dimensional jet grouting piles, a drill rod of all-dimensional high-pressure pile jet grouting equipment drills into a soil body at the bottom of the underground diaphragm wall through the embedded steel pipes 21, and a grout spraying opening of the drill rod sprays grout to the soil body for reinforcement. The underground water fluctuation condition can be effectively observed, and the underground water is prevented from flowing around and entering the foundation pit.
本发明公开了一种地下连续墙与微扰动全方位旋喷桩联合止水方法，包括以下步骤：S1，在若干根预埋钢管21安装在钢筋笼上，预埋钢管21底部封闭，预埋钢管21随钢筋笼入槽，浇注成地下连续墙；S2，基坑开挖中，用钻机把预埋钢管21的底部钻穿，让预埋钢管21内部与地下连续墙体外界水体连通；S3，将预埋钢管21作为地下水的水位观察孔，监测地下连续墙底是否发生绕流的现象；S4，判断地下连续墙底发生绕流的现象后，将预埋钢管21作为微扰动全方位旋喷桩的注浆孔，全方位高压旋喷桩设备的钻杆通过预埋钢管21钻进至地下连续墙底的土体，钻杆的喷浆口将浆液喷射到土体进行加固。本发明能有效观察地下水波动情况，防止地下水绕流进入基坑内。
Underground diaphragm wall and micro-disturbance all-dimensional jet grouting pile combined water stopping method
The invention discloses an underground diaphragm wall and micro-disturbance all-dimensional jet grouting pile combined water stopping method. The method comprises the following steps that S1, a plurality of embedded steel pipes 21 are installed on a steel reinforcement cage, the bottoms of the embedded steel pipes 21 are closed, and the embedded steel pipes 21 enter a groove along with the steel reinforcement cage and are poured into an underground diaphragm wall; S2, in the foundation pit excavation process, the bottoms of the embedded steel pipes 21 are drilled through by a drilling machine,and the interiors of the embedded steel pipes 21 are made to communicate with water outside the underground continuous wall; S3, the embedded steel pipes 21 serve as water level observation holes ofunderground water, and whether streaming occurs at the bottom of the underground diaphragm wall or not is monitored; and S4, after the phenomenon that streaming occurs at the bottom of the undergrounddiaphragm wall is judged, the embedded steel pipes 21 serve as grouting holes of micro-disturbance all-dimensional jet grouting piles, a drill rod of all-dimensional high-pressure pile jet grouting equipment drills into a soil body at the bottom of the underground diaphragm wall through the embedded steel pipes 21, and a grout spraying opening of the drill rod sprays grout to the soil body for reinforcement. The underground water fluctuation condition can be effectively observed, and the underground water is prevented from flowing around and entering the foundation pit.
本发明公开了一种地下连续墙与微扰动全方位旋喷桩联合止水方法，包括以下步骤：S1，在若干根预埋钢管21安装在钢筋笼上，预埋钢管21底部封闭，预埋钢管21随钢筋笼入槽，浇注成地下连续墙；S2，基坑开挖中，用钻机把预埋钢管21的底部钻穿，让预埋钢管21内部与地下连续墙体外界水体连通；S3，将预埋钢管21作为地下水的水位观察孔，监测地下连续墙底是否发生绕流的现象；S4，判断地下连续墙底发生绕流的现象后，将预埋钢管21作为微扰动全方位旋喷桩的注浆孔，全方位高压旋喷桩设备的钻杆通过预埋钢管21钻进至地下连续墙底的土体，钻杆的喷浆口将浆液喷射到土体进行加固。本发明能有效观察地下水波动情况，防止地下水绕流进入基坑内。
Underground diaphragm wall and micro-disturbance all-dimensional jet grouting pile combined water stopping method
地下连续墙与微扰动全方位旋喷桩联合止水方法
YUAN SHOUQIAN (author) / YI JUE (author) / CHEN JIEHUA (author) / ZHU JINGFENG (author) / DENG HUIMIN (author) / SHAO YUN (author) / CHEN ZHANG (author) / CHEN XIAOZHONG (author) / HUANG WENHAO (author) / TANG SHIGUO (author)
2021-02-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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