Large-pipe-diameter manual jacking pipe for space-separated excavation and excavation construction method applying jacking pipe

Abstract

The invention discloses a large-pipe-diameter manual jacking pipe for space-separated excavation and an excavation construction method applying the jacking pipe. The jacking pipe includes a tool pipeand a concrete pipe, the tool pipe includes a blade feet section and a rectification section, the internal space of the blade feet section is divided by partition plates, the partition plates are composed of a horizontal middle partition and a vertical middle partition plate, the internal space of a steel pipe of the blade feet section is divided into three parts by the partition plats, specifically, an upper first space, an upper second space and a lower third space, and a rectifying device is fixedly connected into the jacking pipe. Through the transformation of the tool pipe, the problems of difficult jacking, large settlement and being prone to collapsing of a traditional jacking pipe in a sand pebble stratum can be solved effectively; the problems that a conventional tool pipe is large in an excavation tunnel face, secondary disturbance is more frequent in the process of manual excavation, and reinforced soil collapses in a bulk mode and falls down together with ungrouted soil atthe same time are avoided; and the efficiency of continuous work in the process of manual pipe jacking can be improved greatly, and the construction period and cost are saved.

Description

technical field [0001] The invention belongs to the field of pipe jacking construction, in particular to artificial pipe jacking in separate warehouses and a construction method using the pipe jacking excavation. Background technique [0002] With the rapid development of social economy, urban underground pipeline projects are gradually increasing. After years of development, the construction method has been developed from the original excavation construction to less or no excavation. Among them, pipe jacking construction is a construction method with little or no excavation, which provides great convenience for the passage of urban road traffic. [0003] Most of the traditional artificial pipe jacking is applied in the condition of good soil quality, but in the case of poor soil quality, a tool pipe should be added before the pipe. The traditional pipe jacking tool pipe usually consists of two parts, the blade foot and the adjustment part. The tool pipe plays an important...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a construction method for artificial pipe jacking and pipe jacking excavation in separate warehouses with large pipe diameters, in order to solve the problem of frequent secondary disturbance of sand and pebble strata caused by artificial pipe jacking and serious soil collapse At the same time, it is necessary to solve the technical problem that the existing artificial pipe jacking is difficult, and it is easy to cause the outer wall of the subsequent concrete pipe to form a defective thixotropic mud sleeve

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