High-strength rock breaking pipe jacking machine for composite stratum

Abstract

The invention discloses a high-strength rock breaking pipe jacking machine for a composite stratum. The high-strength rock breaking pipe jacking machine comprises a pipe jacking machine main body structure divided into a front shell and a rear shell, a cutterhead for bearing breaking blades is arranged on the front shell, and the cutterhead is positioned at one end of the front shell and is connected with the front shell. According to the high-strength rock breaking pipe jacking machine for the composite stratum, a hob and a scraper on the cutterhead are used for conducting high-efficiency cutting on high-strength rock, cut broken stone is subjected to secondary breaking through a gap between a breaking arm and a shell breaking steel bar, deslagging is facilitated, excavation of the high-strength rock stratum is achieved, the construction efficiency and safety are improved, and meanwhile, the hob and the scraper on the cutterhead can be replaced at any time, so that the high-strength rock breaking pipe jacking machine is convenient to adapt to excavation of different rock strata.

Description

technical field [0001] The invention relates to a high-strength rock breaking pipe jacking machine used in composite formations. [0002] technical background [0003] In recent years, with the acceleration of urbanization, urban environmental protection has become particularly important, and pipe jacking has been widely used in laying underground pipelines such as water supply, drainage, and electricity. Ground inspection wells and outfalls perpendicular to the pipeline laying direction are usually constructed by open cut or caisson. [0004] Trenchless pipe jacking technology has been widely used in underground space construction, but it is limited to equipment function and process research. In the past, pipe jacking construction was generally carried out in ordinary soil layers. The pipe jacking machine cannot be used for excavation, and only open excavation or pre-splitting blasting construction can be carried out. This not only increases the construction cost, but also ...

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Problems solved by technology

[0004] Trenchless pipe jacking technology has been widely used in underground space construction, but it is limited to equipment function and process research. In the past, pipe jacking construction was generally carried out in ordinary soil layers Jacking, if you encounter composite strata, the high-strength rock in it cannot be excavated by pipe jacking machines, and you can only carry out open excavation or pre-splitting blasting construction, which not only increases construction costs, but also reduces construction efficiency and high safety risks. Affect construction

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