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Method for treating collapsed road surface around inspection-pit for underground lines

A technology of underground pipelines and treatment methods, which is applied in the direction of roads, roads, road repairs, etc., can solve problems such as subsidence, and achieve the effect of small road surface damage, short construction period, and strong roads

Inactive Publication Date: 2006-04-19
陈玉恒
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the current problem of subsidence of the road surface around the maintenance well of underground pipelines, improve the traffic capacity of the road, and ensure the safety of vehicles, this invention proposes a treatment method for the subsidence of the road surface around the maintenance well of underground pipelines, so as to strengthen the well wall, prevent leakage and repair The purpose of road surface subsidence around the wellhead is to enhance the integrity and stability of the maintenance well and prevent the continued development of the deformation and subsidence of the well chamber

Method used

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  • Method for treating collapsed road surface around inspection-pit for underground lines
  • Method for treating collapsed road surface around inspection-pit for underground lines

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Embodiment Construction

[0028] The processing method for road surface subsidence around the underground pipeline maintenance well provided by the present invention includes a well wall sealing grouting program and a well wall outer foundation grouting reinforcement program, and the following is a technical process of an embodiment (refer to figure 1 , figure 2 ).

[0029] The main equipment in the construction of the present invention includes: jackhammer drilling machine, pressure grouting machine, cement slurry mixer, cutting machine, air compressor, 15Kw generator, small vibrating mill and so on. The main materials include: ordinary 425# cement, 525# sulfoaluminate double-fast cement, various admixtures, cold-patch asphalt concrete, asphalt oil, etc. The inventive method carries out as follows:

[0030] 1. Before the grouting process of the borehole wall sealing, the soil quality around the borehole wall 2 of the well chamber 1 to be reinforced shall be sampled and tested, and the sampling meth...

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Abstract

The present invention relates to a technical method for treating subsidence of peripheral pavement of urban underground pipeline manhole. Said invention adopts a pressure slurry-injecting reinforcing technique, and utilizes high-pressure to inject the cement slurry in which various components are added into the gap of ground backfill soil around periphery of manhole wall to form a reinforced layer, said reinforced layer and the roadbed are formed into a whole body so as to prevent the peripheral ground base of the manhole chamber from subsiding. Said method includes the following steps: drilling hole, mounting slurry-injecting pipe, preparing cement slurry and injecting slurry, etc.

Description

technical field [0001] The invention relates to a treatment method for road surface subsidence around underground wells, in particular to a method for treating road surface subsidence around urban underground pipeline maintenance wells by means of grouting reinforcement, which is mainly applicable to the reinforcement of urban road underground pipeline maintenance wells, Plugging project. Background technique [0002] With the acceleration of urban construction, the laying of underground pipelines has increased sharply, such as electric power, telecommunications, gas, heat, optical cables, and sewage systems, etc. There are many underground pipelines, resulting in a large number of maintenance wells for inspecting pipelines on urban roads. Because the material of the well wall of the maintenance well is different from that of the road surface, the compactness of the backfill outside the well wall will loosen after many years of use. In addition, the manhole cover has been cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/10E02D3/12E02D15/04E02D29/12
Inventor 陈玉恒
Owner 陈玉恒
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