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A platform for research: civil engineering, architecture and urbanism
Construction structure and construction method of high-pressure jet grouting diaphragm wall
The invention discloses a construction structure and construction method of a high-pressure jet grouting diaphragm wall. The positions of a sleeve supporting plate and a limiting sleeve are limited through a guiding slide rail, and the position of a guide hole core pipe is limited through the limiting sleeve; jacking pressure is applied to an orifice supporting plate through an orifice position control bag, and an orifice cover plate is arranged at the top of a diaphragm wall orifice; in an area where a special soil layer exists, primary guniting is conducted on the special soil layer througha second mud jacking pipe and a second guniting opening, then jet grouting diaphragm wall construction is conducted through a first guniting opening, and a sealing bag is arranged at the opening position; the insertion direction of a permeation test pipe is limited through a guiding sleeve, downward pressure is applied to a connecting transverse supporting plate and a transverse supporting plate pipe hoop through pipe sinking screw rods, and a closed annular plate is arranged in a pipe cavity of a test outer pipe; and the direction of a water level gauge can be limited through a positioning outer pipe and a gauge sleeve inside the test outer pipe. The construction quality of the high-pressure jet grouting diaphragm wall can be improved, the permeability coefficient test accuracy is improved, and the field construction difficulty is reduced.
本发明公开了高压旋喷防渗墙的施工结构及施工方法，通过导向滑轨限定套管撑板和限位套管的位置，并通过限位套管限定引孔芯管的位置；通过孔口控位囊袋对孔口撑板施加顶压力，并在防渗墙孔洞顶部设置孔口盖板；在存在特殊土层区域，先通过第二压浆管及第二喷浆口对特殊土层进行一次喷浆，然后通过第一喷浆口进行旋喷防渗墙施工，并在洞口部位设置了封口囊袋；通过导向套管限定渗透测试管的插设方向，通过沉管螺杆对连接横撑板及横撑板管箍施加下压力，并在测试外管的管腔内设置了密闭环板；可通过测试外管内部的定位外管及标尺套管限定水位标尺的方向。本发明可提升高压旋喷防渗墙施工质量、提高渗透系数测试准确度、降低现场施工难度。
Construction structure and construction method of high-pressure jet grouting diaphragm wall
The invention discloses a construction structure and construction method of a high-pressure jet grouting diaphragm wall. The positions of a sleeve supporting plate and a limiting sleeve are limited through a guiding slide rail, and the position of a guide hole core pipe is limited through the limiting sleeve; jacking pressure is applied to an orifice supporting plate through an orifice position control bag, and an orifice cover plate is arranged at the top of a diaphragm wall orifice; in an area where a special soil layer exists, primary guniting is conducted on the special soil layer througha second mud jacking pipe and a second guniting opening, then jet grouting diaphragm wall construction is conducted through a first guniting opening, and a sealing bag is arranged at the opening position; the insertion direction of a permeation test pipe is limited through a guiding sleeve, downward pressure is applied to a connecting transverse supporting plate and a transverse supporting plate pipe hoop through pipe sinking screw rods, and a closed annular plate is arranged in a pipe cavity of a test outer pipe; and the direction of a water level gauge can be limited through a positioning outer pipe and a gauge sleeve inside the test outer pipe. The construction quality of the high-pressure jet grouting diaphragm wall can be improved, the permeability coefficient test accuracy is improved, and the field construction difficulty is reduced.
本发明公开了高压旋喷防渗墙的施工结构及施工方法，通过导向滑轨限定套管撑板和限位套管的位置，并通过限位套管限定引孔芯管的位置；通过孔口控位囊袋对孔口撑板施加顶压力，并在防渗墙孔洞顶部设置孔口盖板；在存在特殊土层区域，先通过第二压浆管及第二喷浆口对特殊土层进行一次喷浆，然后通过第一喷浆口进行旋喷防渗墙施工，并在洞口部位设置了封口囊袋；通过导向套管限定渗透测试管的插设方向，通过沉管螺杆对连接横撑板及横撑板管箍施加下压力，并在测试外管的管腔内设置了密闭环板；可通过测试外管内部的定位外管及标尺套管限定水位标尺的方向。本发明可提升高压旋喷防渗墙施工质量、提高渗透系数测试准确度、降低现场施工难度。
Construction structure and construction method of high-pressure jet grouting diaphragm wall
高压旋喷防渗墙的施工结构及施工方法
MA XIUBING (author) / LI HANG (author) / XU QING (author) / QIN JIANG (author) / XIONG LEI (author)
2020-11-17
Patent
Electronic Resource
Chinese
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