Construction technology of a kind of silt solidified soil

A construction technology and technology for solidifying soil, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as occupying large cultivated land and polluting the environment, and achieve the effect of facilitating soil excavation, good curing performance, and preventing cracking

Inactive Publication Date: 2019-02-05
福建港湾岩土工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional solution is to dig out the silt and bury it nearby. Although this can solve the problem of silt deposition, the silt also contains some harmful components such as toxic chemicals and pathogenic organisms. Direct burying will not only occupy a lot of cultivated land, but also polluted environment

Method used

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  • Construction technology of a kind of silt solidified soil
  • Construction technology of a kind of silt solidified soil
  • Construction technology of a kind of silt solidified soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Langqi Hongguang Lake Park Silt Solidification Project

[0023] This project is located in Langqi Town, Fuzhou City, with a total curing volume of 260,000 cubic meters. The construction area for sludge solidification is as follows:

[0024] (1) The lakeside slope is solidified; (2) The retaining wall revetment is solidified;

[0025] (3) Solidification of the foundation in the filling area, including the solidification of the parking lot, the paved square and the foundation in the site;

[0026] (4) The subgrade of the garden road is solidified.

[0027] Construction steps:

[0028] (1) Clean the surface of the site before construction, remove the debris on the surface of the site, and level the construction area;

[0029] (2) Sludge sampling, testing and analysis: Sampling the sludge, analyzing the moisture content, particles and mineral components of the sludge, obtaining the analysis data of the sludge, and preparing a sludge curing agent according to the obtaine...

Embodiment 2

[0048] Soft foundation curing project in a container stacking area of ​​a port in Shenzhen

[0049] This project is located in a port in Shenzhen, and the container area of ​​the port is backfilled with dredging sludge. When backfilling to the design elevation, the shallow foundation shall be solidified. Its curing area is 200000m 2 , and its curing volume is 600,000 cubic meters. The object of solidification is highly compressible silt. The technical indicators of sludge are shown in the table below:

[0050]

[0051] Construction steps:

[0052] (1) Remove all accumulated water in ponds and ditches before construction, and excavate silt with organic matter content exceeding 6%;

[0053] (2) Sludge sampling, testing and analysis: Sampling the sludge, analyzing the moisture content, particles and mineral components of the sludge, obtaining the analysis data of the sludge, and preparing a sludge curing agent according to the obtained data; the sludge curing agent , its...

Embodiment 3

[0061] Dongdi Road (Haixu Road-Haiyue Road) road project of Tianjin Sino-Singapore Ecological City

[0062] Dongdi Road of this project is located in Tianjin Sino-Singapore Eco-City, the former Tianjin Binhai Tourist Area. The planning function is mainly based on landscape and tourism, supplemented by transportation. The site along Dongdi Road is a reclamation land reclamation area, and the vacuum reservation has not been made. The maximum thickness of the reclamation is 5m, and the reclamation period is 2 years. At the same time, there is about 6m of neritic sedimentary layer under the reclamation soil. The above-mentioned soil layer has a large natural void ratio, a high natural moisture content, and a large compressibility coefficient. They are all flow-plastic, and the foundation bearing capacity is low, which is a typical soft soil. Not only is it difficult for road construction machinery to enter the site, but also the post-construction settlement is relatively large.

...

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Abstract

The invention discloses a silt solidification soil construction technology which comprises the steps of surface cleaning drainage, silt sampling, detection analysis, excavation stacking, stirring and mixing, filling and grinding and stabilized soil maintenance. Through solidification soil in-situ solidification, silt and a curing agent are stirred and mixed to form silt solidification soil, and the curing agent is prepared through expanded graphite, activated carbon, cement, quick lime, gypsum, lignocelluloses, coal ash, granulated blast-furnace slag powder, coal gangue, caustic dross, hydroxypropyl methyl celluloses, furfural residues, medical stone and smectite clay. By means of the silt solidification soil construction technology, original flowing high-water-content low-strength high-compressibility silt is converted into high-compressive-strength excellent-entire-board-performance, good-durability and environment-friendly solidification soil, and the requirement of shallow ground earthwork materials for roads, storage yards, ports, reclamation projects, afforesting and the like can be met.

Description

technical field [0001] The invention belongs to the technical field of sludge solidification treatment, and in particular relates to a construction technique of sludge solidification soil. Background technique [0002] At present, many land plots or river channels in the city have not been dredged in time, resulting in the deposition of a large amount of silt. At the same time, the silt is in a state of saturated flow plastic, high water content and high compressibility. Construction difficulties and uneven settlement of the plot need to be dealt with. The traditional solution is to dig out the silt and bury it nearby. Although this can solve the problem of silt deposition, the silt also contains some harmful components such as toxic chemicals and pathogenic organisms. Direct burying will not only occupy a lot of cultivated land, but also polluted environment. Therefore, it is meaningful to invent a method for strengthening foundation treatment by adopting solidified soil ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12C04B28/26
CPCC04B28/26E02D3/126C04B14/024C04B14/022C04B7/34C04B16/02C04B18/08C04B18/141C04B18/12C04B24/383C04B18/04C04B14/041C04B14/10C04B22/143C04B24/122
Inventor 陈建康倪晨曦陆伟梅丰邬健明
Owner 福建港湾岩土工程集团有限公司
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