Tunneling device with drilling angle being adjustable and tunneling machine

A drilling mechanism and angle technology, applied in earthwork drilling, mining equipment, tunnels, etc., can solve problems such as not being able to cut rock mass quickly, and achieve good mechanical properties
CN112196555APending Publication Date: 2021-01-08TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-01-08

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Abstract

The invention discloses a tunneling device with the drilling angle being adjustable and a tunneling machine. The tunneling device comprises a cutterhead, multiple heads, drilling mechanisms and a fixing mechanism, and the heads are vertically arranged on the cutterhead. The drilling mechanisms are rotationally arranged on the cutterhead and comprise drill rods capable of stretching and retractingin the axial direction on the cutterhead. The fixing mechanism is used for fixing the drilling mechanisms rotating on the cutterhead onto the cutterhead so as to adjust the positions of the drill rodson the cutterhead. According to the tunneling device, prefabricated cracks with a certain inclination angle are formed in to-be-excavated rock mass through the drilling mechanisms, then tunneling iscarried out through the heads on the cutterhead, and therefore the mechanical performance of the heads is better played, and then the aim of efficient tunneling of the to-be-excavated rock mass is achieved; and the tunneling device is especially suitable for tunneling of the tunneling machine in hard rock engineering.
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Description

technical field

[0001] The invention belongs to the technical field of roadheaders, in particular to a roadheader with adjustable drilling angle and a roadheader. Background technique

[0002] The principle of tunnel boring machine (TBM) excavation in fractured rock mass is different from that in intact rock mass. The rock breaking in the fractured rock mass is mainly divided into three rock breaking modes: (i) the downward extension and expansion of the rock mass under the tool and the free surface expansion to the side; (ii) the tensile stress wave in the direction of the wave facing surface of the crack The resulting crack is derived from the crack surface; (iii) the crack that propagates downward extends to the prefabricated crack surface. It should be noted that after the stress wave extends to the prefabricated crack, it no longer extends below the crack, and the energy is released on the surface of the prefabricated crack. In the case of complete hard rock excavatio...

Claims

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