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Waterproof and plugging construction method for precipitation well in foundation pit

A construction method and technology for dewatering wells, which are applied in infrastructure engineering, construction, etc., can solve the problems affecting the progress of the construction period, increase the project cost, prolong the precipitation time, etc., so as to shorten the construction period, reduce the project cost, and reduce the precipitation depth. Effect

Inactive Publication Date: 2008-03-26
山东天齐置业集团股份有限公司
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Problems solved by technology

Especially for projects with large foundation pit width and large underground water content, the current method is to arrange multiple dewatering wells around the foundation pit to reduce the groundwater level of the foundation pit. This method has a poor effect on the precipitation in the middle of the foundation pit
In order to achieve the effect of precipitation, the depth of the precipitation well must be increased, which will inevitably increase the cost of precipitation and increase the cost of the project; at the same time, the time of precipitation will be prolonged, which will affect the progress of the construction period

Method used

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  • Waterproof and plugging construction method for precipitation well in foundation pit

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing 1-2, the waterproofing and plugging construction method of dewatering well in foundation pit of the present invention are further described:

[0019] a. According to the engineering drawings and geological conditions, before the excavation of the foundation pit, arrange appropriate large-diameter dewatering wells 1 in the middle of the foundation pit. 1 The construction method is the same as that of ordinary large-caliber well points;

[0020] b. When excavating earthwork, attention should be paid to the protection of the precipitation well 1 to prevent damage to the precipitation well 1 and earthwork falling into the precipitation well 1. The silt in the dewatering well 1 is cleaned up, and the PVC plastic pipe 15 with the depth of the dewatering well 1 is placed. The diameter of the PVC plastic pipe 15 is set according to the dewatering well 1. The PVC plastic pipe 15 is drilled with multiple rows of small holes with a di...

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Abstract

The present invention relates to building construction technology, and is especially the construction process of arranging precipitation well to prevent water in foundation pit and plugging precipitation well after finishing concrete deposition. The construction process includes arranging precipitation wells before earth excavation of foundation pit, setting PVC pipes into the wells, embedding steel casings during constructing concrete bedding, plugging the precipitation wells with graded sandstone and cement after finishing concrete floor pouring, and plugging the steel casings with flanged covers and rubber gaskets and poured expandable concrete. The construction process can lower the underground water level effectively, and has simple construction process, fast construction speed, low cost and high water preventing effect.

Description

technical field [0001] The invention relates to a waterproof and plugging construction method for a dewatering well in a foundation pit, belonging to the technical field of building construction. It specifically relates to the building construction method when the foundation pit is wide and the precipitation is deep. Background technique [0002] With the development of construction technology, the building foundation pit project continues to extend underground, and the dewatering of the building foundation pit is a big problem. Especially for projects with large foundation pit width and large underground water content, the current method is to arrange multiple dewatering wells around the foundation pit to reduce the groundwater level of the foundation pit. This method has a poor effect on the precipitation in the middle of the foundation pit. In order to achieve the dewatering effect, the depth of the dewatering well must be increased, which will inevitably increase the co...

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Application Information

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IPC IPC(8): E02D19/12
Inventor 肖华峰刘玉艳付建泉崔超
Owner 山东天齐置业集团股份有限公司
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