Method for determining water pumping quantity of dewatering well when fixed-water-level water pumping is carried out under action of water-proof curtain

A technology for water-stop curtains and determination methods, which is applied in construction, infrastructure engineering, etc., and can solve the problems of not directly and accurately determining the pumping volume of dewatering wells, etc.

Inactive Publication Date: 2016-02-03
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

For the problem of pumping water at the fixed water level in the foundation pit under the action of the water-stop curtain, there is no method to directly and accurately determine the water pumping volume of the dewatering well, so it is necessary to do further research on this aspect

Method used

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  • Method for determining water pumping quantity of dewatering well when fixed-water-level water pumping is carried out under action of water-proof curtain
  • Method for determining water pumping quantity of dewatering well when fixed-water-level water pumping is carried out under action of water-proof curtain
  • Method for determining water pumping quantity of dewatering well when fixed-water-level water pumping is carried out under action of water-proof curtain

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Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0056] This embodiment provides a method for determining the pumping volume of a dewatering well when pumping at a fixed water level under the action of a water-stop curtain, which is used to determine the calculation of the pumping volume of the dewatering well during the dewatering process of the foundation pit.

[0057] The method described in this embodiment is applied to a working well foundation pit dewatering project, in which: the working well is a circular foundation...

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Abstract

The invention provides a method for determining the water pumping quantity of a dewatering well when fixed-water-level water pumping is carried out under the action of a water-proof curtain. The method comprises: on the basis of obtaining the soil layer information of a confined water layer and water pumping information in a foundation pit, sequentially determining the initial water level of the confined water layer, the water level of the dewatering well after water is pumped and influence radius of the dewatering well, thereby determining the water pumping quantity of the dewatering well. Under the condition that the initial water level of the confined water layer and the water level of underground water in the dewatering well are known, according to the method provided by the invention, the water pumping quantity of the dewatering well can be effectively determined, and a reference is provided for evaluating the influence of foundation pit dewatering on the surrounding environment. The method is simple, is practical, is convenient for popularization, and has a high application value.

Description

Technical field [0001] The invention relates to a method in the technical field of construction engineering, in particular to a method for determining the pumping volume of a dewatering well when a single well is pumped at a fixed water level in a foundation pit under the action of a water-stop curtain. Background technique [0002] The coastal areas are distributed with huge thickness of Quaternary sediments deposited alternately between land and sea, and the groundwater is abundant. With the progress of my country's economic construction, underground construction facilities, such as underground shopping malls, subway stations, subway tunnels, etc., have gradually increased, and the problems encountered in the construction of underground projects have gradually increased. For underground projects located below the groundwater level, during the construction process, the groundwater level needs to be lowered before excavation to avoid quicksand and piping during the excavation pro...

Claims

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Application Information

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IPC IPC(8): E02D19/10
Inventor 沈水龙武永霞袁垚吴怀娜
Owner SHANGHAI JIAO TONG UNIV
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