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Super-thick peat soil and saturated silt foundation treatment method

A ground treatment and peat-based technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as long construction period, high cost, and poor effect

Inactive Publication Date: 2020-07-28
CHINA MCC5 GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to provide a treatment method for ultra-thick peaty soil and saturated silt foundation to solve the problems of long construction period, high cost or poor effect of peaty soil and saturated silt using existing treatment methods

Method used

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Embodiment

[0034] This embodiment proposes a method for treating ultra-thick peaty soil and saturated silt foundation, which includes the following steps:

[0035] Squeeze silt by riprap: Forcibly extrude soft soil through flakes and block stones to form a dump fill. Among them, the flakes are not mixed with weathered stones, and their size ranges from 30cm to 80cm. 50cm to 100cm; use the occlusal compaction effect between the flakes to increase the shear strength of the throw fill body and increase the bearing capacity of the foundation; in this embodiment, in the step of riprap silting, the size of the throw stones is lower, larger, upper Small; Throw in the large-sized flakes until the large-sized flakes are exposed to the silt surface, and then use an excavator to compact them. After the upper layer of slabs is pressed into the silt, then throw and fill the next layer until it is mechanically rolled. No longer falling down; during the rolling process, the extruded silt should be disp...

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Abstract

The invention relates to the field of foundation treatment, and provides a super-thick peat soil and saturated silt foundation treatment method aiming at solving the problems that when an existing treatment manner is adopted for peat soil and saturated silt land, the construction period is long, the manufacturing cost is high, or the effect is poor. The method includes the following steps that stones are thrown to packing sedimentation, wherein rubbles and rock blocks forcedly extrude soft soil to form throw filling bodies; drainage consolidation is carried out, wherein a gravel layer is laidon the throw filling bodies, a pre-pressing effect is achieved, and by means of good permeability of holes between the rubbles and the rock blocks, in combination with intra-pit open drainage and extra-pit deep well pump drainage, foundation drainage consolidation is promoted; and reinforced cushion construction is carried out, wherein multiple reinforced cushions made of geosynthetic materials are laid, the stress field and the strain field of a foundation are changed, and drainage construction is carried out in time every time one section is constructed. The method has the beneficial effectsthat the construction period is short, the cost is low, and the treatment effect is good.

Description

technical field [0001] The invention relates to foundation treatment technology, in particular to a method for treating ultra-thick peaty soil and saturated silt foundation. Background technique [0002] Peaty soil has the characteristics of large void ratio, high water content, low bearing capacity, high sensitivity, and high compressibility; saturated silt has the characteristics of vibration liquefaction, low bearing capacity, and high compressibility. The conventional treatment process of peaty soil layer and silt layer is divided into replacement process, preloading process, deep mixing pile process, reinforcement process, and pile foundation process. A single process is often selected according to the corresponding scope of application, construction period and cost of the process. For foundation treatment, for the ultra-thick peaty soil layer and silt layer in the foundation of construction projects with limited construction period, the filling process and preloading p...

Claims

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Application Information

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IPC IPC(8): E02D3/00E02D3/08E02D3/02E02D3/046
CPCE02D3/00E02D3/005E02D3/02E02D3/046E02D3/08
Inventor 李永帅姚平杨乃娇
Owner CHINA MCC5 GROUP CORP
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