A reinforcement method for shield tunneling through building ground
A technology for buildings and shields, which is applied to earth-moving drilling, underground chambers, and shaft equipment, etc., can solve problems affecting the safe use of the surface and adjacent buildings, damage to the surrounding environment of the upper part of the tunnel structure, and displacement of surrounding soil. Achieve the effect of improving overall stability and anti-disturbance ability, improving physical and mechanical properties, and improving foundation bearing capacity
Active Publication Date: 2022-05-17
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP 2ND ENG CO LTD +1
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Problems solved by technology
However, in the process of underground construction, changes in the stress state of the ground will directly lead to displacement and deformation of the surrounding soil. When the displacement and influence exceed a certain range, it will inevitably cause serious damage to the tunnel structure itself and the upper surrounding environment, affecting the ground surface. and safe use of adjacent buildings
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Embodiment 1
[0045] A kind of reinforced structure of the shield passing through the building according to the present invention, such as figure 1 As shown, the pre-grouting reinforcement area 1 and the pipe shed reinforcement area 2 are included, and the pre-grouting reinforcement area 1 and the pipe shed reinforcement area 2 are all set in the foundation between the foundation 3 of the building to be passed down and the tunnel 5 , the pre-grouting reinforcement area 1 is used to reinforce the shallow soil below the foundation 3, the pipe shed reinforcement area 2 is used to reinforce the surrounding rock area below the shallow soil, and the pre-grouting The size of the grouting reinforcement area 1 and the size of the pipe shed reinforcement area 2 are determined according to the design requirements, and the hole position layout and drilling construction of the pre-grouting hole 4, the layout of the pipeline-41 and the pipe shed 6 are uniform. The foundation 3 and surrounding underground...
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The invention discloses a reinforcement method for a shield to pass through the ground of a building. Firstly, the soil between a pair of foundations and a tunnel is pre-grouted and reinforced through obliquely arranged pipelines, that is, the shallow soil under the foundation is reinforced. Reinforce the soil body to improve the physical and mechanical properties of the soil layer, and then use the pipe shed installed obliquely to reinforce the soil between the foundation and the tunnel again with the pipe shed to increase the strength of the surrounding rock and improve the bearing capacity of the foundation. Block or weaken the transmission of formation deformation when the shield tunnels under the ground, and reduce the impact of shield construction on buildings. Both the pipeline one and the pipe shed avoid the foundation, effectively reducing the disturbance of the construction to the soil, and avoiding Damage the foundation of the building and improve the safety of the shield tunneling operation, especially for the old dilapidated buildings that are extremely sensitive to settlement. Stabilization of dilapidated buildings and tunnels.
Description
technical field [0001] The invention relates to the field of building engineering construction, in particular to a reinforcement method for a shield tunneling through the ground of a building. Background technique [0002] At present, in the construction of tunnels in the main urban areas of cities, it is unavoidable for the shield machine to pass through the buildings. The foundation of the buildings is extremely sensitive to the disturbance of the ground soil, and the construction of the shield tunnel will inevitably cause the disturbance of the surrounding soil. Two disadvantages The simultaneous action of factors will pose a great threat to the safe construction of the project. It is very important to control the safety of shield tunneling and the impact of excavation on ground settlement and buildings above. However, in the process of underground construction, changes in the stress state of the ground will directly lead to displacement and deformation of the surrounding...
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IPC IPC(8): E21D11/10
CPCE21D11/10
Inventor 郭庆飞李雪任国青侯刚崔清峰南庆向乔张宗来张君宋修元张新尚耿翱鹏
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP 2ND ENG CO LTD