Draining method for ultra-deep batholith deep foundation pit
A deep foundation pit and drainage system technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of lack of mature experience, serious foundation pit water collection, inapplicable rock foundation deep foundation pit drainage and drainage construction, etc., to ensure construction quality , The effect of reducing the construction cost
Active Publication Date: 2013-04-17
MCC5 GROUP CORP SHANGHAI
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Problems solved by technology
[0004] However, this deep foundation pit blind ditch water collection well drainage method is not suitable for the drainage construction of deep foundation pits in rock foundations
[0005] In the process of rock blasting, bedrock excavation and underground structure construction, a large amount of fissure water exists in bedrock weathering fissures, structural fissures and broken zones. Supplemented by stagnant water and rainwater, the water collection in the foundation pit is serious, which has caused great difficulties to the construction of underground structures
How to effectively drain these fissure waters and ensure the smooth construction of underground concrete structures, there is no mature experience for reference
Method used
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Embodiment 1
[0034] see now figure 1 and figure 2 , figure 1 It is a schematic structural diagram of the drainage system at the bottom of the foundation pit of the swirl pool according to the embodiment of the present invention, figure 2 for figure 1 A-A sectional view in .
[0035] The ultra-deep rock foundation and deep foundation pit drainage method of the present invention is used for the construction of the inclined floor structure of the hot-rolled swirl pool located on the rock foundation, and is characterized in that it includes the following steps:
[0036] a. Set up blind ditch to drain groundwater
[0037] After the excavation of the earth and rock in the swirling pool, a drainage system is formed before pouring the cushion, so that there is no water on the cushion, the earth and stone are excavated to the base and the blind ditch is set around the base, and the drainage ditch with an inner section size of 500x500mm is excavated and replaced. Stones, clean up all the mud ...
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A draining method for an ultra-deep batholith deep foundation pit is used for structural construction of a hot rolling rotational flow pool inclined bottom plate located on a batholith. The draining method is characterized by comprising the following steps: arranging drain ditches to drain ground water; arranging drain pipes to drain side wall crack water; arranging a water-collecting well; installing a plastic film water-resisting layer; and installing a submersible pump to drain the ground water. The draining method for the ultra-deep batholith deep foundation pit has the advantages that the construction steps are designed reasonably and are easy to operate, the crack water of the batholith deep foundation pit is drained, and the method guarantees that a concrete cushion layer is free of water after cushion layer pouring, guarantees construction quality of an underground concrete structure and reduces engineering construction cost.
Description
technical field [0001] The invention relates to a method for lowering and draining water from foundation pits of underground structures in construction engineering, in particular to a method for lowering and draining water from deep foundation pits in ultra-deep rock foundations. Background technique [0002] Whether the method of drainage and drainage of deep foundation pits is appropriate and effective is related to the stability of deep foundation pits, the safety of surrounding buildings and the construction quality of underground structures. At present, the industry has a set of mature construction technology for the drainage and drainage of deep foundation pits on soft soil foundations . [0003] Chinese patent CN102116033A disclosed on January 7, 2011 a method and device for draining and draining the blind ditch of the deep foundation pit, which includes collecting the accumulated water outside the outer wall of the basement into the blind ditch pipe at the lower part...
Claims
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IPC IPC(8): E02D19/12E02D19/20
Inventor 刘埃平张中胜
Owner MCC5 GROUP CORP SHANGHAI