Two-step underground pipe-driving construction process
A construction method and pipe jacking technology, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., and can solve problems such as inability to realize multi-purpose of one machine, inability to excavate, long construction period, etc.
Inactive Publication Date: 2004-06-23
SHANGHAI MECHANIZED CONSTR GRP
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Problems solved by technology
[0002] At present, in the construction of municipal pipelines, it is often necessary to dig trenches underground to lay pipelines and repair pipelines. The construction period of the excavation method is long, especially the underground pipelines in the urban center section are very dense, and the pipelines overlap and overlap. If you want to lay new Pipelines will not be able to be excavated by traditional excavation methods, and if there are buildings on the surface, they will not be able to be excavated. Excavating roads in busy cities will bring great inconvenience to traffic and people’s lives. The existing underground pipe jacking The construction method is to drill two working wells at two places where pipelines need to be laid, and then use hydraulic pipe jacking equipment to jack pipes one by one in one working well, thereby completing the trenchless pipeline laying construction method, but this method is subject to jacking Due to the limitation of tube diameter, it is impossible to realize the multi-purpose function of one machine
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[0005] The figure includes a working well 1 and a receiving well 2 for pipe jacking construction between the two ends of the scheduled laying. A guide steel pipe 4 is jacked between the working well 1 and the receiving well 2, and then the guide steel pipe 4 is used as the guide, and the cutter head reamer 5 or extrusion reamer 5 is pushed by the propulsion device 7 to carry out reaming and forming. The laid pipes 6 are pushed in joint by joint with the reamer 5 , and the guide steel pipe 4 is pushed out by the cutter head reamer 5 or extrusion reamer 5 and recovered by the receiving well 2 . When encountering the cutter head reamer 5 and carrying out the reaming and forming under the propulsion device 7, the soil broken in the cutter head reamer 5 is rushed to the guide steel pipe 4 by the high-pressure water in the cutter head reamer 5, and then Received from receiving well 2 outflow.
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The two-step underground pipe-driving construction process includes setting working well and accepting well on the two ends, between which the pipe is laid, for pipe driving construction, driving one guide steel pipe between the working well and the accepting well with a miniature remote-controlled guide pipe driving machine based on designed axis requirement, and subsequent reaming to shape the hole with a capstan reamer or an extruding reamer while driving the pipe one section by one section, and pushing out guide steel pipe with the capstan reamer or the extruding reamer to the accepting well for recovery.
Description
technical field [0001] The invention relates to an underground pipe jacking construction method, in particular to an underground pipe jacking two-step construction method. Background technique [0002] At present, in the construction of municipal pipelines, it is often necessary to dig trenches underground to lay pipelines and repair pipelines. The construction period of the excavation method is long, especially the underground pipelines in the urban center section are very dense, and the pipelines overlap and overlap. If you want to lay new Pipelines will not be able to be excavated by traditional excavation methods, and if there are buildings on the surface, they will not be able to be excavated. Excavating roads in busy cities will bring great inconvenience to traffic and people’s lives. The existing underground pipe jacking The construction method is to drill two working wells at two places where pipelines need to be laid, and then use hydraulic pipe jacking equipment to...
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IPC IPC(8): F16L1/028
Inventor 吴欣之金鑑钦孙继辉王国弼金中林杨乃刚李新利印家骏
Owner SHANGHAI MECHANIZED CONSTR GRP
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