Calculation method for water drainage and water drainage time in dynamic precipitation process of submersible fully penetrating well or well group

Abstract

The invention discloses a calculation method for water drainage and water drainage time in dynamic precipitation process of a submersible fully penetrating well or well group. According to the method, a specific calculation method for the water drainage and the water drainage time in a process of changing underground water level from an initial water level to a target water level (the water level drops or rises again) and a calculation method for the water drainage and the water drainage time under variable conditions of the water precipitation region by integrating a water precipitation region on the basis of a water drainage calculation formula when a stable water level is maintained in the water precipitation process of the submersible fully penetrating well or well group. According to the calculation method, the present situation that the calculation of the water drainage at a water level change stage during the design of the conventional submersible fully penetrating well or well group depends on experience for long time, and calculation and dynamic control of the water drainage in the overall water precipitation process of the submersible fully penetrating well or well group of engineering construction are realized.

Description

technical field [0001] The invention relates to a calculation method suitable for engineering construction precipitation and displacement, in particular to a calculation method for the displacement and drainage time of a complete submersible well or a group of wells during the dynamic precipitation process. Background technique [0002] The purpose of foundation pit dewatering is to reduce the groundwater level below a certain depth requirement, which can satisfy the construction of the foundation pit structure without water interference, thereby reducing the difficulty of construction, and ensuring the excavation and structure of the foundation pit to the greatest extent. construction safety. [0003] At present, a lot of research has been done on the daily displacement when the precipitation is maintained at a certain stable water level at home and abroad. In terms of theory, according to the stable and unsteady seepage movement in the confined aquifer, the corresponding ...

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Problems solved by technology

However, there is no relevant calculation method at home and abroad for the daily precipitation and the time required for precipitation in the process of water level drop or recovery in the process of dewatering of uncompleted wells or well groups under pressure during engineering construction. On the basis of trial pumping, we will continue to adjust and finally determine the specific displacement, which will have a certain impact on the construction period and cost of the project.

[0004] Generally speaking, the daily precipitation during the dewatering process of pressure-bearing incomplete wells or well groups during engineering construction depends on the experience of engineering and technical personnel, and cannot meet the requirements of engineering construction dewatering.

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