Dewatering construction method for near-lake superfine sand soil foundation pit

A construction method and technology of ultra-fine sand, which are applied in basic structure engineering, excavation, construction, etc., can solve the problem of not ensuring that the dewatering well does not shift and collapse, and achieve a good safety production atmosphere, ensure the precipitation effect, and a good society. The effect of reputation

Inactive Publication Date: 2021-11-05
CHINA MCC17 GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme cannot guarantee that the precipitation wells in ultra-fine sandy soil will not be displaced and collapsed.

Method used

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  • Dewatering construction method for near-lake superfine sand soil foundation pit
  • Dewatering construction method for near-lake superfine sand soil foundation pit
  • Dewatering construction method for near-lake superfine sand soil foundation pit

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: as figure 1 Shown, a kind of superfine sandy soil foundation pit dewatering construction method near the lake comprises the following steps:

[0024] Step 1: Through calculation, drill holes outside the slope of the ultra-fine sandy soil foundation pit in the basement. The diameter is the diameter of the sand-free concrete permeable pipe plus 600mm, and must reach the depth determined by calculation;

[0025] Step 2: Wrap a single layer of anti-corrosion dense mesh filter cloth outside the sand-free concrete permeable pipe;

[0026] Step 3: Install the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosion dense-mesh filter cloth in sequence, and wrap a double layer of anti-corrosion dense-mesh filter cloth between two sections of sand-free concrete permeable pipe;

[0027] Step 4: After the installation is completed, fill the filter material around the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosio...

Embodiment 2

[0031] Embodiment 2: on the basis of embodiment 1: as image 3 with Figure 4 Shown, a kind of superfine sandy soil foundation pit dewatering construction method near the lake comprises the following steps:

[0032] Step 1: Through calculation, drill holes outside the slope of the ultra-fine sandy soil foundation pit in the basement. The diameter is the diameter of the sand-free concrete permeable pipe plus 600mm, and must reach the depth determined by calculation;

[0033] Step 2: Wrap a single layer of anti-corrosion dense mesh filter cloth outside the sand-free concrete permeable pipe;

[0034] Step 3: Install the sand-free concrete permeable pipe wrapped with a single layer of anti-corrosion dense-mesh filter cloth in sequence, and wrap a double layer of anti-corrosion dense-mesh filter cloth between two sections of sand-free concrete permeable pipe;

[0035] Step 4: After the installation is completed, fill the filter material around the sand-free concrete permeable pip...

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Abstract

The invention discloses a dewatering construction method for a near-lake superfine sand soil foundation pit, and belongs to the field of foundation pit dewatering. The dewatering construction method comprises the following steps that: step 1, through calculation, a hole is drilled outside a basement foundation pit superfine sand soil foundation pit slope, the diameter is equal to the diameter of a non-fine concrete pervious pipe plus 600 mm, and the depth determined through calculation must be reached; step 2, non-fine concrete pervious pipes are wrapped with single layer of corrosion-resistant dense-mesh filter cloth; step 3, the non-fine concrete pervious pipes wrapped with the single-layer corrosion-resistant dense-mesh filter cloth are sequentially installed, and the part between every two sections of non-fine concrete pervious pipes is wrapped with double-layer corrosion-resistant dense-mesh filter cloth; step 4, after installation is completed, the periphery of the non-fine concrete pervious pipes wrapped with the single-layer corrosion-resistant dense-mesh filter cloth are filled with a filter material; and step 5, a water pump is installed in each non-fine concrete pervious pipe, and the non-fine concrete pervious pipes are each connected with a drainage pipe. Loss of superfine sand soil in a dewatering process can be eliminated at a time, the dewatering effect is guaranteed, the superfine sand soil at the foundation pit slope can be dried for a long time, and then the stability of the foundation pit slope is guaranteed.

Description

technical field [0001] The technical field that the present invention relates to, particularly relates to a kind of superfine sandy soil foundation pit dewatering construction method near the lake. Background technique [0002] At present, with the rapid development of our country's economy, people have higher and higher requirements for the living environment and the quality of the community. Lake residential quarters, and then the scale of the community is getting bigger and bigger, and the number of high-rise buildings is increasing. In order to meet the needs of use functions, one or more basements (civil air defense projects or basements) are generally provided. During the whole process of basement pit construction, the safety of the foundation pit slope is particularly important. The first condition for the safety of the foundation pit slope is the precipitation effect of the foundation pit, and the groundwater level must be reduced to 1m below the bottom of the found...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10E02D19/20E02D17/02E02D17/20
CPCE02D19/10E02D19/20E02D17/02E02D17/20
Inventor 袁超张勋来
Owner CHINA MCC17 GRP
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