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Dewatering Treatment Method for Cracks Existing in Water-resisting Layer of Foundation Pit

A treatment method and technology of water-repellent layer, applied in the direction of infrastructure engineering, construction, etc., can solve problems such as groundwater gushing, foundation pit dewatering failure, etc., to achieve the effect of rapid treatment, promotion of construction progress, and good promotion of application space

Active Publication Date: 2016-06-22
CHINA METALLURGICAL CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when there are cracks in the sandstone in the middle of the site, groundwater will gushes out from the cracks, which will cause the foundation pit to fail in precipitation

Method used

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  • Dewatering Treatment Method for Cracks Existing in Water-resisting Layer of Foundation Pit
  • Dewatering Treatment Method for Cracks Existing in Water-resisting Layer of Foundation Pit
  • Dewatering Treatment Method for Cracks Existing in Water-resisting Layer of Foundation Pit

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] The water-resisting layer provided by the embodiment of the present invention has a precipitation treatment method for cracks, such as figure 2 , image 3 , Figure 4 As shown, it includes the following processing steps:

[0022] 1. Clean the rock floor of the foundation pit, check the cracks where water gushes, and excavate a sump outside the scope of the foundation pit. The size of the sump (the length, width and depth of the rectangular structure, the radius and depth of the circular structure, etc.) ) is determined according to the process requirements and meets the process requirements; the present invention provides a sump with a rectangular (square) structure, and its length, width and height are respectively 0.5m*0.5m*0.5m sump.

[0023] 2. Install PVC water collection pipes along the sandstone gaps, and lead several PVC water collect...

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Abstract

The invention discloses a water table lowering method applied to the situation that an aquiclude of a foundation pit is cracked. The method comprises the steps of cleaning a rock stratum base plate of the foundation pit, checking cracks through which water gushing occurs, and digging a sump beyond the range of the foundation pit; installing PVC collector pipes along the cracks of the base plate, wherein all the cracks are communicated with the sump through the multiple PVC collector pipes; covering the PVC collector pipes with a metal plate, and pouring a foundation bed on the metal plate so that the PVC collector pipes and the metal plate can be covered with the foundation bed and the dense foundation bed can be formed on the surface of sandstone. According to the water table lowering method, the structure is simple, flexibility is realized, cost is saved, it can be easily guaranteed that water is not accumulated on a sump base plate, and the water table lowering effect is remarkable; even if sandstone is cracked, immediate processing can be conducted, the water collecting effect of the foundation pit can be guaranteed, smooth proceeding of engineering construction can be guaranteed, construction progress can be promoted, and high economic value and high social value are realized.

Description

technical field [0001] The invention relates to the technical field of dewatering treatment in engineering construction, in particular to a dewatering treatment method for cracks in the water-resisting layer of foundation pits. Background technique [0002] In the construction of housing construction and municipal engineering, it is necessary to adopt the method of foundation pit dewatering to reduce the water level. The functions of foundation pit dewatering mainly include: 1. Convenient construction; 2. Convenient cushioning and waterproofing; 3. Prevent foundation pits collapsed. When the groundwater of the site is terrace-type phreatic water, there is an aquifer in the upper part, and sandstone is used as the water-resisting floor, the precipitation usually adopts tube well well point precipitation, and is arranged circularly along the periphery of the foundation pit, and the tube well is a phreatic complete well. However, when there are cracks in the sandstone in the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/10
CPCE02D19/10
Inventor 何俨邓超
Owner CHINA METALLURGICAL CONSTR ENG GRP