Slurry shield tunneling machine underwater arrival construction method

Abstract

The invention relates to a slurry shield tunneling machine underwater arrival construction method which is characterized by comprising main technological processes including end strengthening, end freezing, tunnel portal chiseling, foundation trench backfilling, shield tunneling machine arrival and subsequent construction. According to the slurry shield tunneling machine underwater arrival construction method, when a shield tunneling machine arrives under the working conditions of deep earthing and high water pressure, an end cannot lower the water level or the lowered water level cannot meet the desired effect, and then the underwater arrival construction method can be adopted. Under the conditions that not enough site is provided for end strengthening or not enough auxiliary measures for the dewatering are provided, the safe and effective slurry shield tunneling machine underwater arrival construction method can also be adopted. The slurry shield tunneling machine underwater arrival construction method has the advantages of being safe, reliable, small in effect on ground surface and the like. The time when the whole shield tunneling machine arrives is obviously shortened, and the quality of splicing tube pipes is good.

Description

technical field [0001] The invention relates to a construction method of tunnel shield tunneling, which belongs to the field of tunnel construction, and in particular to a construction method of mud-water shield underwater arrival. Background technique [0002] As mud-water shields are more and more widely used in domestic urban rail transit, highway transportation, water conservancy and hydropower, and gas transmission projects, the construction technology of mud-water shields is becoming more and more mature, and the safety of mud-water shield construction has also received high attention. . In recent years, in the sub-construction of shield tunneling and arrival in mud-water shield projects under construction and in construction, especially in the construction of arrival, various problems often occur, which lead to accidents. Especially under the conditions of deep covering soil, high water pressure, and complex stratum, the construction risk of shield tunnel arrival can...

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Problems solved by technology

[0004] The purpose of the present invention is: to address the shortcomings of the background technology, the present invention provides a mud-water shield underwater arrival construction method, the end of which cannot carry out conventional precipitation when the shield arrives (passes the station) under the condition of deep covering soil and high water pressure Or when the precipitation cannot achieve the expected effect, the underwater arrival construction method can be adopted; when there is not enough space at the end for end reinforcement or auxiliary measures such as precipitation, this safe and effective arrival method can also be adopted

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