Layer-across submerged well quick dewatering device and method for multiple aquifers and multiple aquicludes

A technology of aquifers and aquifers, applied in the fields of geological engineering, underground engineering, and geotechnical engineering, can solve problems such as large differences in aquifer permeability, uncoordinated work, and impact on construction schedules

Active Publication Date: 2020-10-27
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the distribution of soil layers in the actual project site may be more complicated. For example, there are multiple aquifers and multiple aquifers, and the permeability of the aquifer may also vary greatly. , which is not coordinated with the work of the depressurization-drying well in the lower layer, which may cause the problem of slow precipitation and affect the construction period

Method used

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  • Layer-across submerged well quick dewatering device and method for multiple aquifers and multiple aquicludes
  • Layer-across submerged well quick dewatering device and method for multiple aquifers and multiple aquicludes

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Embodiment 1

[0027] like figure 1 As shown, in the multi-aquifer-multi-aquifer system 11, there are low-permeability aquifer 1, aquifer 3 and high-permeability aquifer 2 ( High-permeability aquifer 2 is more permeable, and low-permeability aquifer 1 is less permeable). The depressurization-drainage well has a good drainage effect when pumping the lower aquifer, but the drainage effect of the shallow dewatering well is poor. In this system, only the depressurization-drainage well and the dewatering of the upper dewatering well will affect the overall dewatering of the foundation pit speed.

[0028] like Figure 1~2 As shown, the present embodiment is used for the multi-aquifer-multi-aquifer rapid dewatering device, including a shallow dewatering well 5 for drainage of a low-permeability aquifer 1 and a shallow drain well 5 for a high-permeability aquifer. 2 decompression-drainage wells 4 for drainage (preferably in this embodiment, depressurization-drainage wells 4 and shallow dewatering...

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Abstract

The invention relates to a layer-across submerged well quick dewatering device and method for multiple aquifers and multiple aquicludes. In a multi-aquifer multi-aquiclude system, a low-permeability aquifer, an aquiclude and a high-permeability aquifer sequentially exist in a soil layer isolated by a waterproof curtain from top to bottom; the quick water reducing device comprises a shallow unwatering well for drainage of the low-permeability aquifer, and a pressure reducing-unwatering well for the high-permeability aquifer, and further comprises layer-across submerged wells arranged around thepressure reducing-unwatering well; and each layer-across submerged well is provided with a drilled holes for drilling through the low-permeability aquifer, the high-permeability aquifer and the aquiclude between the low-permeability aquifer and the high-permeability aquifer, the drilled holes are used for communicating with the low-permeability aquifer and the high-permeability aquifer, and vertical water running is formed. Compared with the prior art, the layer-across submerged wells are introduced into the multi-aquifer multi-aquiclude system isolated by the waterproof curtain, the drainageprocess can be remarkably accelerated, and a new thought can be provided for a foundation pit dewatering construction process.

Description

technical field [0001] The invention belongs to the technical fields of geological engineering, geotechnical engineering, and underground engineering, and relates to a method for setting a layer-penetrating borehole to accelerate dewatering during the dewatering construction process of an engineering site, in particular to a method for multi-aquifer-multi-water-resisting layers A rapid dewatering device and method for a layer-crossing submerged well. Background technique [0002] In the construction environment with a relatively high groundwater level, dewatering at the well point is an important technical measure in the construction of earthworks, foundations and foundation works. It can reduce the lateral displacement and settlement of the slope soil, stabilize the slope, eliminate quicksand, reduce the uplift of the base soil, so that the foundation and foundation engineering construction below the natural groundwater can avoid the influence of groundwater, provide relati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10
CPCE02D19/10
Inventor 王建秀薛睿刘笑天何倩倩龙冠宏武昭徐娜
Owner TONGJI UNIV
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