Long distance pipe jacking construction method for urban underground pipe gallery

Abstract

The invention belongs to the technical field of urban underground comprehensive pipe gallery, and in particular relates to a long-distance pipe jacking construction method for urban underground pipe gallery. In the present invention, by rationally matching the raw material composition of the thixotropic mud and using a combined mixer, the thixotropic mud can be obtained by stirring quickly and efficiently, and it can play outstanding pipe jacking drag reduction and pipe jacking in the long-distance pipe jacking construction process. The hole reinforcement function greatly reduces the risk of soil collapse during the construction of urban underground pipe corridors. The invention also has the following advantages: the structure of the combined mixer is reasonable and effective, the operation of continuous mud charging is simple and efficient, the mud filling is flexible and controllable, the problem of too much or too little mud in a certain bucket is not easy to occur, and the overall mixing of mud The advantages of high production efficiency.

Description

technical field [0001] The invention belongs to the technical field of urban underground comprehensive pipe gallery, and in particular relates to a long-distance pipe jacking construction method for urban underground pipe gallery. Background technique [0002] Urban underground pipe corridor refers to the comprehensive corridor of underground urban pipelines, that is, to build a tunnel space underground in the city, integrating various engineering pipelines such as power, communication, gas, heating, water supply and drainage, etc., with special inspection ports , hoisting port and monitoring system, and implement unified planning, unified design, unified construction and management. In the construction process of urban underground pipe corridors, pipe jacking construction technology is required. [0003] The long-distance pipe jacking construction method mainly includes: first, excavating the working pit; second, installing jacking equipment; third, excavating soil while ja...

AI Technical Summary

Problems solved by technology

[0004] The entire preparation process of the existing thixotropic mud mostly has the following two problems to a certain extent: first, the formula of the thixotropic mud is not reasonable enough, and finally the drag reduction in the jacking action and the reinforcement of the inner wall of the pipe hole are insufficient. The performance is not outstanding enough; second, in the preparation process of thixotropic mud mixing, the commonly used mixer needs to stand the thixotropic mud after the mixing is completed. At this time, this mixer can no longer be used for mixing, so the commonly used mixer exists The use efficiency is low, and only a single batch of products can be mixed and prepared one by one, so the efficiency is relatively low

[0009] However, the pipe jacking mud stirring device in this utility model patent has the problem of low overall stirring efficiency

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