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Construction method for adding water lowering well in water collecting well

A construction method and a technology for collecting wells, which are applied in basic structure engineering, construction, etc., can solve problems such as no treatment method, and achieve the effects of fast construction speed, simple construction method and high strength

Inactive Publication Date: 2012-05-02
天津住宅集团建设工程总承包有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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  • Construction method for adding water lowering well in water collecting well
  • Construction method for adding water lowering well in water collecting well
  • Construction method for adding water lowering well in water collecting well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) On the side wall and the bottom wall of the well dug, lay the cushion 6, the waterproof layer 8 and the waterproof protective layer 7 successively. (2) drive the prepared circular steel pipe dewatering well structure into the bottom wall of the water collection well until the required elevation is reached, and the circular steel pipe dewatering well The structure includes a round steel pipe 1, an upper water stop ring 2-1 and a lower water stop ring 2-2 are welded at intervals on the outer wall of the round steel pipe, and there are holes on the part of the round steel pipe to be buried in the soil. A plurality of holes, steel wire mesh is wrapped on the outer wall of the round steel pipe provided with holes, and the lower water stop ring is located at the bottom wall of the water collection well; the diameter of the holes is 20mm, and the two adjacent holes (3) remove the soil in the round steel pipe; (4) backfill 250mm thick gravel at the bottom of the round steel...

Embodiment 2

[0024] (1) On the side wall and the bottom wall of the well dug, lay the cushion 6, the waterproof layer 8 and the waterproof protective layer 7 successively. (2) drive the prepared circular steel pipe dewatering well structure into the bottom wall of the water collection well until the required elevation is reached, and the circular steel pipe dewatering well The structure includes a round steel pipe 1, an upper water stop ring 2-1 and a lower water stop ring 2-2 are welded at intervals on the outer wall of the round steel pipe, and there are holes on the part of the round steel pipe to be buried in the soil. A plurality of holes, steel wire mesh is wrapped on the outer wall of the round steel pipe provided with holes, and the lower water stop ring is located at the bottom wall of the water collection well; the diameter of the holes is 16mm, and the two adjacent holes The distance between them is 55mm; (3) remove the soil in the round steel pipe; (4) backfill 350mm thick grav...

Embodiment 3

[0027] (1) On the side wall and the bottom wall of the well dug, lay the cushion 6, the waterproof layer 8 and the waterproof protective layer 7 successively. (2) drive the prepared circular steel pipe dewatering well structure into the bottom wall of the water collection well until the required elevation is reached, and the circular steel pipe dewatering well The structure includes a round steel pipe 1, an upper water stop ring 2-1 and a lower water stop ring 2-2 are welded at intervals on the outer wall of the round steel pipe, and there are holes on the part of the round steel pipe to be buried in the soil. A plurality of holes, steel wire mesh is wrapped on the outer wall of the round steel pipe provided with holes, and the lower water stop ring is located at the bottom wall of the water collection well; the diameter of the holes is 23mm, and the two adjacent holes The distance between them is 45mm; (3) remove the soil in the round steel pipe; (4) backfill 300mm thick grav...

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Abstract

The invention discloses a construction method for adding a water lowering well in a water collecting well, which comprises the following steps of: driving a prepared round steel pipe water lowering well structure into a bottom wall of the water collecting well until the scale height required is met; removing the earth in the round steel pipe; refilling gravels on the bottom of the round steel pipe to form a water filtering layer; placing a water pump in the round steel pipe for pumping water according to water level situation; paving in sequence a cushion layer, a waterproof layer and a waterproof protection layer on a side wall and a bottom wall of the water collecting well for construction recovery; binding steel bars on the side wall and the bottom wall of the water collecting well out of the waterproof protection layer, and pouring concretes on the bottom wall and the side wall of the water collecting well; and blocking the top of the round steel pipe. By means of the construction method provided by the invention, the water lowering well has the advantages of simple and convenient construction method, fast construction speed, low cost and high intensity, is capable of effectively solving the problem that the water cannot be timely discharged to the specified depth below a bottom plate on the condition that a water stop curtain is slightly cracked to leak the water to damage the waterproof layer of the water collecting well nearby and satisfying the basement construction requirements, and is simple in structure.

Description

technical field [0001] The invention relates to a construction method for a dewatering well, in particular to a construction method for increasing a dewatering well in a water collection well. Background technique [0002] With the development of urban construction, a large number of high-rise buildings, civil air defense projects and subway projects have emerged. The success of foundation pit support directly affects the benefit and success of engineering construction. As the environmental factor of rock and soil mass, groundwater often has a negative impact on foundation pit engineering. For areas with a high groundwater level, a large area of ​​temporary precipitation and water stop is required during foundation pit excavation. If the groundwater in the foundation pit is not properly treated, it is easy to cause accidents such as foundation pit collapse and ground subsidence. In the excavation and basement construction of deep foundation pit engineering, it is necessary...

Claims

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Application Information

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IPC IPC(8): E02D19/06E02D19/10
Inventor 李呈蔚冯云王凯刁晓翔沈怀宇
Owner 天津住宅集团建设工程总承包有限公司
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