A construction method for non-excavation grouting repair of drainage pipeline

Abstract

The invention belongs to the technical field of underground water supply and drainage pipeline leakage repair, and particularly relates to a drainage pipeline non-excavation grouting repair construction method. According to the method, excavation does not need to be carried out, and leakage to the earth surface can be prevented. The method comprises the steps of scene investigation, positioning, internal support mounting, placement of a drilling machine and a grouting device, grout production, drilling, grouting, hole sealing, machine moving and the like. The drainage pipeline non-excavation grouting repair construction method has the advantages that a flow cross section is small in loss after repairing is carried out; the flow is basically lossless; the grouting operation is easy, and the grouting effect is easy to control; construction is easy and convenient; the construction period is short; no special equipment is needed; the engineering cost is low; the application range is wide; and in the whole repairing process, a road surface is not required to be excavated.

Description

technical field [0001] The invention belongs to the technical field of leakage repair of underground water supply and drainage pipes, and in particular relates to a non-excavation grouting repair construction method for drainage pipes without excavation and leakage out of the ground surface. Background technique [0002] With the development of the city, the scale of the underground pipeline network is expanding, but a large number of underground pipelines have reached or are close to their service life due to the long laying time, and the repair of the pipeline is becoming more and more important. Relevant statistics show that the leakage rate of my country's pipe network is more than three times that of developed countries, and the annual water seepage is nearly 10 billion cubic meters. Leakage of pipelines leads to quality and safety hazards in surrounding roads and other buildings, and leakage of sewage pipes also pollutes groundwater. [0003] At present, the tradition...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of the existing non-excavation grouting repair construction method of drainage pipelines, which have large flow section loss, obvious loss of flow rate, difficulty in grouting, difficult control of grouting effect, and hidden dangers; in some cases Excavation and repair are required, the equipment used in construction is expensive, the repair cost is high, and some pipelines are not suitable for special conditions. However, after the repair is provided, the loss of the flow section is small, the flow is basically no loss, the grouting operation is simple, the grouting effect is easy to control, and the construction is simple. , short construction period, no need for special equipment, low engineering cost, wide application range, a non-excavation grouting repair construction method for drainage pipes that does not need to excavate the road surface during the entire repair process