A sealing device

Abstract

The invention relates to the technical field of engineering construction, and discloses a well sealing device, which includes a casing, a grouting pipe and a switch assembly; the first end of the casing is inserted into the well pipe, and the casing and the well The pipe is sealed and fixedly connected; the grouting pipe is arranged in the casing, the first end of the grouting pipe is exposed to the second end of the casing, and the grouting pipe is sealed and fixedly connected to the casing ; The switch assembly is arranged on the first end of the grouting pipe. Due to the sealed and fixed connection between the casing and the well pipe, and the sealed and fixed connection between the grouting pipe and the casing, grouting is injected from the grouting pipe into the bottom dewatering well, and the switch assembly is closed after grouting, so the pressurized water in the bottom dewatering well will not flow In the foundation pit, the water will not flow from the bottom of the pit to the bottom of the bottom plate and damage the bottom plate, which can ensure the waterproof quality of the bottom plate.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a well sealing device. Background technique [0002] During the construction process, the condition of the groundwater system is complex and changeable, and the dewatering at well points around large foundation pits cannot fully meet the on-site dewatering requirements. Therefore, the method of dewatering at the bottom of the foundation pit must be used for foundation pit dewatering, and the water under the pit is mostly confined water. Therefore, the pressure relief and drainage of the pit bottom water and the sealing of the well have become important and difficult points. [0003] Due to the difficulty of groundwater dewatering in deep and large foundation pits, the dewatering of many tube wells around foundation pits cannot meet the construction requirements, and dewatering at the bottom of foundation pits has become an inevitable task. Many sites will use pit...

AI Technical Summary

Problems solved by technology

[0003] Due to the difficulty of groundwater dewatering in deep and large foundation pits, the dewatering of many tube wells around foundation pits cannot meet the construction requirements, and dewatering at the bottom of foundation pits has become an inevitable task. Many sites will use pit bottom tube well dewatering or light well point dewatering. Encountered problems such as well closure

If the groundwater is unpressurized water sealing well procedure is relatively easy, you can directly seal the well with concrete before pouring the bottom slab concrete, if the groundwater is pressurized water, then directly plugging and pouring concrete will form a water system, and the waterproof quality of the bottom slab cannot be guaranteed

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