Open type soft rock heading machine forepoling system and application method thereof

Abstract

The invention discloses an open type soft rock heading machine forepoling system. The open type soft rock heading machine forepoling system comprises a cutterhead, a pushing portion and an operation bin, wherein the pushing portion comprises an annular power portion and an oil cylinder, the annular power portion is fixedly connected with the cutterhead through a cutterhead connecting position, a power source used for providing annular power is arranged in the annular power portion, the oil cylinder is arranged on the inner wall of a protective shell, one end of the oil cylinder is fixedly connected with the annular power portion, the other end of the oil cylinder is fixedly connected with a heading machine body, the operation bin is arranged on the heading machine body and used for controlling the power source and the oil cylinder, the cutterhead and the annular power portion each are of a subsection structure, and all the sections are correspondingly installed. The invention further discloses an application method of the system. According to the method, the power source and the oil cylinder are controlled through the operation bin, an arch crown portion, an arch waist portion andan arch bottom portion are sequentially controlled to move, then axial displacement and radial rotation of an arch crown cutterhead body, an arch waist cutterhead body and an arch bottom cutterhead body are controlled, an upper step is pre-excavated firstly, then an arch waist portion of the upper step is excavated, and finally a lower step is pre-excavated, after completion, the system is reset,and subsection excavation of rock is achieved.

Description

technical field [0001] The invention belongs to the technical field of roadheaders, and in particular relates to an open-type soft rock roadheader advance support system and a use method thereof. Background technique [0002] In the traditional mountain tunnel construction, the drilling and blasting method is often adopted, which requires drilling and blasting operations. The operation process is prone to danger, and the safety of operators and property cannot be guaranteed. However, the existing TBM hard rock roadheader and shield Structure roadheaders are not well suited to excavation of soft rock tunnels, and the construction conditions of mountain tunnels are limited and the site conditions are insufficient. It is difficult to use large-scale construction machines and tools, which has become one of the resistances to mechanized operations. [0003] In summary, there is a lack of mechanical equipment suitable for soft rock excavation in mountain tunnels in the prior art, ...

AI Technical Summary

Problems solved by technology

[0002] In the traditional mountain tunnel construction, the drilling and blasting method is often adopted, which requires drilling and blasting operations. The operation process is prone to danger, and the safety of operators and property cannot be guaranteed. However, the existing TBM hard rock roadheader and shield TBMs are not well adapted to the excavation of soft rock tunnels, and the construction conditions of mountain tunnels are limited, and the site conditions are insufficient. It is difficult to use large-scale construction machines and tools, which has become one of the obstacles to mechanized operations.

[0003] In summary, there is a lack of mechanical equipment suitable for soft rock excavation in mountain tunnels in the existing technology, and it is necessary to propose improved technical means to solve the above problems

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