Large pipeline non-cutout dredging and desilting construction method

Abstract

The invention relates to a large pipeline non-cutout dredging and desilting construction method which comprises the following steps of 1, performing detection on a pipeline firstly for knowing the blockage condition of the pipeline; 2, putting down an underground sewage pipeline high-pressure dredging device, and performing dredging and desilting on sludge in the pipeline under the non-cutout condition; 3, separating silts from dirty water with slit-water separation equipment; 4, adding a chemical agent in the separated water, and recharging the water into the pipeline; 5, performing secondarydetection, comparing a result with the pipeline blockage condition before dredging, and detecting the desilting effect; and 6, packaging the sludge, transporting the sludge outwards to an appointed place, and finishing desilting. According to the large pipeline non-cutout dredging and desilting construction method, dredging and desilting are performed on the large pipeline under the non-cutout condition, and physical separation and chemical treatment are performed on the muddy water; the transportation size of the separated sludge is greatly reduced compared with muddy water, the quality of the sewage after chemical treatment is clear, and the sewage flows back into the sewage pipeline again for normal circulation; and therefore, the large pipeline dredging and desilting problem can be solved, outward transportation of the silts and the water are greatly reduced at the same time, and a promotion effect is exerted to environmental protection.

Description

technical field [0001] The invention relates to a new construction technology: a construction method for dredging and dredging large-scale pipelines without interruption. Background technique [0002] With the development and utilization of deep underground spaces in cities, the accumulation of municipal engineering construction, the continuous increase in the volume of municipal facilities, the continuous improvement of pipeline network facilities, the maintenance of municipal sewage pipeline networks has reached an unprecedented height, especially in Zhejiang Province After the requirement of "building the most beautiful village and co-governing the five waters, zero stagnation of sewage" was put forward, the maintenance of the sewage pipe network became the top priority. important. Existing dredging equipment and technology cannot dredge and dredge large-scale main pipeline networks under the condition of continuous flow. After dredging, the volume of sludge water is lar...

AI Technical Summary

Problems solved by technology

The existing dredging equipment and technology cannot dredge and dredge the large-scale main pipe network under the condition of continuous flow. After dredging and dredging, the volume of sludge water is large, and the transportation work is also very difficult to implement, and the economic and environmental protection costs are high.

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