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Control method of amount of precipitation of deep foundation pit in binary structure stratum

A binary structure and control method technology, which is applied in infrastructure engineering, construction, etc., can solve the conflict between the depth of drawdown and the loss of water resources, and achieve the effect of small ground settlement and small water pumping

Active Publication Date: 2019-06-11
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0008] The invention provides a method for controlling the precipitation of a deep foundation pit in a binary structure stratum to solve the technical problem of contradiction between the depth of the ground and the loss of water resources

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  • Control method of amount of precipitation of deep foundation pit in binary structure stratum
  • Control method of amount of precipitation of deep foundation pit in binary structure stratum
  • Control method of amount of precipitation of deep foundation pit in binary structure stratum

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] see figure 1 Shown, the control method of the deep foundation pit precipitation of binary structure formation of the present invention is characterized in that, comprises the following steps:

[0029] Step S1, constructing a vertical curtain in the foundation pit, so that the depth of the vertical curtain inserted into the confined aquifer is greater than 2 / 3 of the thickness of the aquifer;

[0030] Step S2, installing a water filter pipe so that the water filter part of the water filter pipe is on the upper part of the impermeable layer, and the diameter of the water filter pipe is equal to 250mm, and the length of the water filter pipe is 10m-12m;

[0031] Step...

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Abstract

The invention discloses a control method of amount of precipitation of a deep foundation pit in a binary structure stratum. The control method of the amount of precipitation of the deep foundation pitin the binary structure stratum comprises the following steps that a vertical heavy curtain is constructed in the foundation pit, so that the vertical heavy curtain is enabled to be inserted into a confined aquifer with a depth greater than 2 / 3 of the thickness of the aquifer; filter pipes are installed to enable the filter parts of the filter pipes to be positioned on the upper part of a strongpermeable layer, the diameter of the filter pipes is 250mm, and the length of the filter pipes is 10-12m; and according to a formula, calculation of the drainage amount extraction is carried out. According to the control method of the amount of precipitation of the deep foundation pit in the binary structure stratum, by effectively controlling the length of the waterproof curtain, the diameter ofa well pipe and the length and the reasonable positions of the filter pipes, the pumping amount and the ground subsidence can be minimized under the condition that the purpose of drawdown is achieved.

Description

technical field [0001] The invention relates to a method in the field of construction engineering, in particular to a method for controlling the precipitation of a deep foundation pit in a binary structure formation. Background technique [0002] In recent years, with the development of underground space in our country, the scale and depth of foundation pits have continued to increase. In order to ensure the construction safety of the foundation pit project, when the groundwater level is higher than the excavation surface, it is necessary to dewater the foundation pit. In the dewatering project, due to the lowering of the groundwater level, the buildings (structures) around the foundation pit will settle unevenly, causing different degrees of inclination and cracks, and may even cause the buildings (structures) to break and collapse. In the construction of deep foundation pit engineering, in order to reduce the impact of precipitation on the surrounding environment, the met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10E02D19/12
Inventor 王忠凯
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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