Orifice pipe sealing device, grouting device and grouting method

Abstract

The invention discloses an orifice pipe sealing device, a grouting device and a grouting method, belonging to the technical field of water conservancy and hydropower construction. Wherein, the orifice tube sealing device includes an orifice tube, an upper support plate, a lower support plate and a force transfer structure, and the force transfer structure connects the upper support plate and the lower support plate; the grouting device includes the described hole The mouth tube sealing device also includes a sleeve and a pullout-resistant structure, and the pullout-resistant structure includes a cylinder body, two push rods, a clamp, a tightening spring and a limit rod. In the orifice pipe sealing device, grouting device and grouting method disclosed in the present invention, the lower support plate is connected to the upper support plate through a force transfer structure, and the lower support plate is restricted by the upper support plate so that its position will not move, In this way, downward binding force is applied to the soil layer to prevent ground uplift and pipeline deformation. At the same time, it can help to increase the grouting pressure and grouting volume, expand the diffusion and reinforcement range of grout, save the number of drilling holes, and improve the reinforcement effect.

Description

technical field [0001] The invention relates to an orifice pipe sealing device, a grouting device and a grouting method, and belongs to the technical field of water conservancy and hydropower construction. Background technique [0002] In recent years, the scale of urban construction in karst areas in my country has continued to expand. The engineering geology and hydrogeological environment of cities in karst areas are extremely complex. Urban underground engineering construction can easily change the regional groundwater environment, resulting in loose overlying soil layers. Loose overlying soil layers can induce ground subsidence It is the key to control ground subsidence. As a commonly used and important engineering measure in the foundation reinforcement treatment of water conservancy and hydropower buildings, grouting technology is widely used in the treatment of special strata in karst areas. [0003] The grouting method and the excavation and backfill method are the ...

AI Technical Summary

Problems solved by technology

At present, the sealing of orifice pipes usually adopts top grouting or mold bag technology to achieve sealing and pressure isolation. Specifically, the gap between the bottom of the orifice pipe and the soil body is sealed by pouring cement-based materials, or the orifice pipe is tied with mold bags , the mold bag is swollen and sealed by grouting, but in the grouting process, the small grouting pressure can easily cause the ground to rise too much, thus causing damage to roads and underground shallow buried pipelines, and grouting reinforcement bad effect

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