Mud-water balance jacking pipe system and construction method thereof

Abstract

The invention discloses a mud-water balance jacking pipe system and a construction method thereof. The mud-water balance jacking pipe system comprises a mud sedimentation tank, wherein a sedimentation tank is arranged on the left side of the interior of the mud sedimentation tank; an adjusting tank is arranged on the right side of the interior of the mud sedimentation tank; a mud-water separator is arranged above the sedimentation tank; a stirrer is arranged in the adjusting tank; the lower end of the right side of the adjusting tank is connected with a water feeding pump; the water feeding pump is connected with a second water feeding pipe through a first water feeding pipe; the second water feeding pipe is connected with a mud and water cabin of a jacking pipe tunneling machine. The mud-water balance jacking pipe system has the beneficial effects that mud and water are recycled, the water consumption is reduced, the cost is reduced, the environment pollution is avoided, mud residues are easily brought out, mud is not easily precipitated in a mud discharging pipe, the circumstance that anti-sticking soil expands when meeting water, and a soil wall is easily collapsed and damaged is avoided, the effects of discharging the mud residues and balancing underground water are achieved, the stability of a tunneling surface is good, meanwhile, the mud residues are conveniently separated, treated and transported, the friction resistance between a pipe joint and a soil body in a jacking process of a jacking pipe can be reduced, and the construction difficulty is low.

Description

technical field [0001] The invention relates to a mud-water balanced pipe jacking, in particular to a mud-water balanced pipe jacking system and a construction method thereof. Background technique [0002] This project is a water quality improvement project for the supporting pipe network of Guigang and other sewage treatment plants in Nanming District, Guiyang City. It is located from Chaoyangdong Road to Yuchang Road, Nanming District, Guiyang City. Underground pipes and pipe jacking pipes are prefabricated reinforced concrete round pipes with an inner diameter of 2400mm, a wall thickness of 240mm, and a length of 2.0m for each section; circular and rectangular working wells and receiving wells are set for the pipe jacking line. According to geological data and on-site investigation, the site of this project is a shallow-buried pipe jacking, and the pipe jacking crossing area is a municipal road with a large traffic flow; [0003] The construction section is a long-distan...

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Problems solved by technology

[0003] The construction section is a long-distance pipe jacking construction. During the rock excavation process of the pipe jacking machine, the sludge needs to be discharged. However, in the existing sludge discharge technology, the water needs to be transported to the mud tank of the pipe jacking machine to discharge the mud. The sludge in the warehouse is carried out and discharged, and there are the following technical problems: the water density is small, it is not easy to carry out the sludge, the sludge discharge pipe is easy to settle, and there is a large amount of water loss. layer, to prevent the clay from swelling when it encounters water, which will easily cause the soil wall to collapse and damage, and the stability of the excavation surface will be poor; the water consumption will be high, resulting in high cost, waste of water resources, and pollution to the environment; It is convenient for sludge treatment and transportation; at the same time, if the rock formation in the pipe jacking section is in moderately weathered dolomite limestone, the rock mass is relatively broken, the integrity is poor, and the geological structure is complex. The friction between the pipe joint and the soil during the pipe jacking process Larger technical problems with difficult construction

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