Underground construction fabricated confined concrete lagging jack and mechanized construction method

Abstract

The invention discloses an underground construction fabricated confined concrete lagging jack and a mechanized construction method. In order to be matched with lagging jack intelligent mounting equipment to conduct tunnel construction, the fabricated confined concrete lagging jack is researched and developed, the relevant technologies of folded hoisting, mechanized assembly, accurate positioning,fracture surface reexamination and the like of the lagging jack are broken through, the lagging jack being lifted manually to be split is not needed in the tunnel construction process, and the whole set of construction process can be conducted through a mechanized manner, and is safer and more efficient. The mechanized construction method specifically comprises the construction steps that (1), thelagging jack is folded and hoisted; (2), the lagging jack intelligent mounting equipment is utilized to conduct sequential extending on the lagging jack, fabricated joints are automatically clamped,and a longitudinal connection device is mounted in advance; (3), clamping buckle lifting, accurate positioning and clamping fixing are conducted; (4) fracture surface reexamination is conducted; (5) core concrete is poured; and (6) the compactness is detected and a key part is reinforced.

Description

technical field [0001] The invention belongs to the field of underground engineering support, and in particular relates to an underground engineering assembly type constrained concrete arch frame machine and a mechanized construction method. technical background [0002] In recent years, with the rapid development of my country's economy and the sharp increase in traffic demand, the number of traditional highway lanes can no longer meet the increasing demand for traffic flow. The number of two-way eight-lane and above highway projects has increased year by year, and the corresponding tunnel projects have continued to increase. During the construction of the tunnel, the surrounding rock often has engineering problems such as vault caving, large deformation, and broken supporting components, making it difficult to control the surrounding rock. At present, a large number of manpower is used for tunnel arch support in my country. During the construction of underground projects, ...

AI Technical Summary

Problems solved by technology

However, although the performance of the arch installation vehicle used in most researches in China is good, it is difficult to popularize and apply it in the tunnel mechanized construction process. The reason is that there is no supporting application of the prefabricated arch and its construction method

In underground engineering support, the joint connection between the arch components is mainly based on flange joints. During mechanized construction, it is still necessary to manually carry out bolt connection and other processes, which may cause personnel safety problems and construction efficiency. problem, does not match mechanized construction

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