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Construction method for progressive excavation of plain river-adjacent reservoir basin under mucky soil condition

A technology of silt soil and construction method, applied in excavation, infrastructure engineering, waterway system and other directions, can solve the problems of difficult construction, complicated operation and high cost, and achieve the effect of solving the long construction period

Active Publication Date: 2022-07-22
SINOHYDRO BUREAU 7 CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a construction method for the progressive excavation of the plain river reservoir basin under the condition of silty soil, so as to solve the problem of complex operation, difficult construction and high cost of the existing earthwork excavation method in the silty soil foundation. Time-consuming technical issues

Method used

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  • Construction method for progressive excavation of plain river-adjacent reservoir basin under mucky soil condition
  • Construction method for progressive excavation of plain river-adjacent reservoir basin under mucky soil condition
  • Construction method for progressive excavation of plain river-adjacent reservoir basin under mucky soil condition

Examples

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Effect test

Embodiment 1

[0036] A construction method for progressive excavation of a river basin in a plain under the condition of silty soil, the method comprises the following steps:

[0037] Step 1, drive a circle of continuous stirring piles 2 along the surrounding dam toe in the reservoir basin to act as a water-stop curtain;

[0038] Step 2: Divide the entire reservoir basin into several large areas, so that each large area can be adjacent to the main road 4 in the reservoir basin area, and excavate the main drainage ditch 3 on both sides of the main road 4 in the reservoir basin area;

[0039] Step 3, use the surface layer dregs of the reservoir basin area to lay the temporary construction road 5, and compact the road surface. At the same time, the secondary drainage ditch 6 is excavated outside the temporary construction road 5. The temporary construction road 5 must pass through all large areas and form a closed loop. The temporary construction road 5 is laid out from the middle of the reser...

Embodiment 2

[0044] Based on Example 1, Example 2 lists a number of new technical features, and Example 1 can be selected or combined with them to form a number of new and different technical solutions.

[0045] Further, in the above-mentioned construction method for progressive excavation of a river basin in a plain under the condition of silty soil, the step 6 further includes:

[0046] Step 601, excavate in strips 7 in the area, and reserve temporary construction roads 5 during the excavation process;

[0047] Step 602, after the excavation of the strip 7 in the area is completed, the excavation of the temporary construction road 5 in the strip 7 is carried out.

[0048] Optionally, in the above-mentioned construction method for progressive excavation of a river basin in a plain under silty soil conditions, there are two intersecting trunk roads 4 in the reservoir basin area, and the trunk road 4 in the reservoir basin area divides the entire reservoir basin into four. large area.

[...

Embodiment 3

[0058] A construction method for progressive excavation of a river basin in a plain under the condition of silty soil, comprising the following steps:

[0059] Step 1, drive a circle of continuous stirring piles 2 in a circle along the surrounding dam toe in the reservoir basin of River 1 to act as a water-stop curtain;

[0060] Step 2, take the two intersecting main roads 4 as dividing lines, divide the entire reservoir into four large areas A, B, C and D, and excavate the main drainage ditch 3 on both sides of the main road 4 in the reservoir basin area;

[0061] Step 3, using the surface layer slag in the reservoir basin area, laying the temporary construction road 5, compacting the road surface, and excavating the secondary drainage ditch 6 outside the temporary construction road 5;

[0062] Step 4, the area between the adjacent temporary construction roads 5 is a small area, and each small area is divided into many strips 7 with a width of 60m. The strip excavation began...

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Abstract

The invention discloses a construction method for progressive excavation of a plain river-adjacent reservoir basin under a mucky soil condition. The construction method comprises the following steps: driving a circle of continuous stirring piles at a dam foot; a reservoir is divided into four large areas, and main drainage ditches are dug in the two sides of a main road; paving a temporary construction road by utilizing the surface muck of the reservoir basin area, compacting the road surface, and excavating a secondary drainage ditch on the outer side of the temporary construction road; each small area is divided into a plurality of strip areas, and strip excavation is conducted from the small area on the outermost side of each large area; after the excavation of the outermost strip is completed, excavating the next small-area strip, and progressively excavating to the center of the reservoir basin in sequence; and the temporary construction road and the main road are excavated. According to the method, progressive partition excavation is conducted from the periphery to the center, and unexcavated mucky soil is solidified, so that construction vehicles and workers can enter the interior to conduct excavation construction of the center area. And a flow construction method is adopted and can be carried out simultaneously, so that the construction period is effectively shortened.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a construction method for progressive excavation of a river basin in a plain under the condition of silty soil. Background technique [0002] In terms of physical properties, silty soft soil presents the characteristics of large natural water content, large porosity, high compressibility, low permeability and low load strength, while in engineering construction, it shows greater thixotropy and rheology. , non-uniformity, low water permeability and other characteristics. [0003] During the excavation of the river basin in the plain, the construction problems caused by silty soil are particularly serious. The external factors that greatly affect the construction of silty soft soil foundation. [0004] Due to the above-mentioned difficulties in the excavation of the river basin in the plain. Conventional excavation methods cannot be used. In addition, conventional ear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/00E02D5/46E02D19/18E03F5/04E03F5/10
CPCE02D17/00E02D5/46E02D19/18E03F5/04E03F5/10
Inventor 王聪叶阳杨航邹顺清张哲
Owner SINOHYDRO BUREAU 7 CO LTD
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