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Soft clay foundation treatment method suitable for municipal road pipeline laying

A technology for laying pipelines and municipal roads, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as adverse impact on engineering construction quality, impact on pipeline performance, pipeline instability or floating, etc., and achieve the effect of foundation reinforcement. Good, reduce the foundation shear damage and uneven settlement, the effect of fast pile formation

Pending Publication Date: 2022-06-10
JIANGSU DONGZHU LANDSCAPE CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The laying of municipal road pipelines on soft clay foundations is prone to ground shear damage, uneven settlement, pipeline instability or floating, etc., which will affect the performance of pipelines and cause serious adverse effects on the quality of project construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Further, the rolling speed of the vibratory road roller is 2-4km / h, the vibration frequency is 30Hz, and during the rolling process, the wheels are staggered by more than 1 / 4.

[0034] Furthermore, after each layer of backfill dregs is rolled and compacted, the measured density is not less than 90%.

[0035] The above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements can also be made, and these improvements should also be regarded as the present invention. protection scope of the invention.

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PUM

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Abstract

The invention discloses a soft clay foundation treatment method suitable for municipal road pipeline laying, which comprises the following steps of: 1, determining the depth of a soft clay layer of a to-be-treated site according to investigation data; secondly, the stratum of the site to be treated is divided into a soil filling layer, a foundation layer and a reinforcing layer from shallow to deep; thirdly, original soil is excavated out of the soil filling layer, and a high-pressure jet grouting pile is adopted to reinforce a reinforcing layer foundation along the line where the pipeline needs to be laid; fourthly, cement mixing piles are constructed on the reinforcing layer foundations on the two sides of the high-pressure jet grouting piles to form an anti-seepage curtain; fifthly, a sewage pipe pipeline is arranged on the reinforcing layer, a rainwater pipe pipeline is arranged on the foundation layer, and part of the rainwater pipe pipeline and a rainwater and sewage branch pipe pipeline are arranged on the soil filling layer; and sixthly, slag and soil clamping backfilling is conducted on the soil filling layer, and layered filling and tamping are conducted. According to the soft clay foundation treatment method suitable for municipal road pipeline laying, the soft clay foundation is subjected to layered treatment according to the requirements of different pipelines, the treatment efficiency is high, and the foundation reinforcement effect is good.

Description

technical field [0001] The invention belongs to the technical field of municipal road pipeline foundation treatment, in particular to a soft clay foundation treatment method suitable for laying municipal road pipelines. Background technique [0002] Rainwater pipes, sewage pipes and water supply pipes are all municipal road pipeline projects. The laying of such municipal road pipelines has certain requirements for subgrade settlement. If the pipeline undergoes compression settlement or lateral displacement, the pipe body will bend longitudinally, thus affecting Pipeline stability, and even pipeline damage, water leakage and other problems. [0003] Soft clay foundation refers to fine-grained soil composed of silt deposits and humus, which is characterized by high water content, large void ratio, high compressibility and low bearing capacity. The laying of municipal road pipelines on soft clay foundations is prone to ground shear damage, uneven settlement, pipeline instabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E02D19/18E02D3/046
CPCE02D5/46E02D19/18E02D3/046
Inventor 王超林新钟琴杨峰
Owner JIANGSU DONGZHU LANDSCAPE CONSTR