Light well point dewatering construction method for shallow foundation pits of coastal areas

A light-weight well point and construction method technology, applied in infrastructure engineering, construction, etc., can solve the problems of inconvenience, labor and time, etc., and achieve the effect of simple method, good economic benefit and low engineering cost

Active Publication Date: 2014-06-18
MCC5 GROUP CORP SHANGHAI
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Problems solved by technology

However, this method is not suitable for the dewatering of well points in shallow foundation pits (foundation trenches) in coastal areas, and the construction work of setting the outlet pipe with the submersible pu

Method used

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  • Light well point dewatering construction method for shallow foundation pits of coastal areas
  • Light well point dewatering construction method for shallow foundation pits of coastal areas

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Experimental program
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Effect test

Embodiment 1

[0020] The light-duty well point dewatering construction method for shallow foundation pits in coastal areas of the present invention uses ordinary well point dewatering construction processes: measuring and setting out → digging well point trenches → punching → installing water-absorbing well point pipes → filling Coarse sand filter material → install the pump → lay the water collecting main → connect the water collecting main to the pump → test pumping → formal pumping → foundation construction → evacuate the well pipe. The invention improves the traditional light well point dewatering construction method. It changes the type of pump, the installation position in the well point dewatering system and a series of related control methods. see now figure 1 , figure 2 It is a schematic diagram of the improved light well point structure of the present invention. As shown in the figure, the water pump adopts a deep-suction high-pressure jet pump 10, the power of the deep-suctio...

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Abstract

A light well point dewatering construction method for shallow foundation pits of coastal areas is characterized in that deep suction high-pressure injection pumps (10) are used as water suction pumps, the horizontal directions of the deep suction high-pressure injection pumps (10) are mounted between bent connection tubes (8) and water collection header tubes (10). The deep suction high-pressure injection pumps (10) pump water uninterruptedly during water pumping, and water outflow valves of the deep suction high-pressure injection pumps (10) are examined and adjusted regularly during water pumping to control the water flow. Measures are required to be taken timely if the number of dead wells exceeds 10%, and repeated punching flushing is performed through high-pressure water. The method has the advantages that the method is simple, construction is simple and convenient, the dewatering effect is apparent, the smooth implementation of projects is guaranteed, the engineering cost is low, and the economic benefit is good.

Description

technical field [0001] The invention relates to a well point dewatering construction method, in particular to a light well point dewatering construction method for shallow foundation pits in coastal areas. Background technique [0002] Well point precipitation is a method of artificially lowering the groundwater table. figure 1 It is a schematic diagram of a traditional known light well point structure. Light well point dewatering is widely used in shallow foundation pit (foundation trench) dewatering construction due to its advantages of simple equipment, easy operation, simple construction, and economical rationality. However, the traditional light well point dewatering is a vacuum pump belt Dozens of well point pipes are not effective in dewatering in muddy sand or silt soil layers, especially not suitable for well point dewatering in shallow foundation pits (foundation trenches) in coastal areas. [0003] Chinese patent CN102051886B disclosed a light well point dewater...

Claims

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Application Information

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IPC IPC(8): E02D19/10
Inventor 尚宁洲
Owner MCC5 GROUP CORP SHANGHAI
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