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Borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM (Full Face Rock Tunnel Boring Machine)

A technology of large deformation and drilling and blasting, which is applied in the direction of tunnels, earthwork drilling, mining equipment, etc., can solve the problems of low construction efficiency and safety factor, and achieve the effect of reducing construction risk, improving construction efficiency, and improving construction safety factor

Pending Publication Date: 2019-04-26
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the above-mentioned background technology, the present invention proposes a TBM for the weak and large deformation and rockburst pretreatment of drill and blast tunnels, which solves the problems of construction efficiency and The problem of low safety factor

Method used

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  • Borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM (Full Face Rock Tunnel Boring Machine)
  • Borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM (Full Face Rock Tunnel Boring Machine)
  • Borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM (Full Face Rock Tunnel Boring Machine)

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Embodiment 2

[0023] Embodiment 2, a kind of drilling and blasting method tunnel weak large deformation and rockburst pretreatment TBM, said propulsion mechanism 7 includes symmetrically arranged propulsion cylinders 7-1, one end of one propulsion cylinder 7-1 is hinged to the main drive 4, The other end is hinged with the corresponding left bracket 8-1. One end of another propulsion oil cylinder 7-1 is hinged with the main drive 4, and the other end is hinged with the corresponding right bracket 8-2. Under the action of the propulsion cylinder, the main drive drives the inner casing to move along the outer casing to realize the expansion and contraction of the cutterhead to complete an excavation stroke.

[0024] Further, the output end of the main drive 4 is provided with a main bearing 5, the hollow shaft 2 cooperates with the main bearing 5, and the main drive drives the hollow shaft to rotate to realize the rotation of the cutter head. The bottom of the main drive 4 is provided with a...

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Abstract

The invention discloses a borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM (Full Face Rock Tunnel Boring Machine) and aims at solving the problems of low construction efficiency and low safety coefficient of a borehole-blasting method tunnel weak large deformation and rock burst pretreatment process in the prior art. The borehole-blasting method tunnel weak large deformation and rock burst pretreatment TBM disclosed by the invention comprises a movable car body, wherein a slag discharging system, an X-shaped supporting jack system and a telescopic mechanism are arranged on the movable car body; the front end of the telescopic mechanism is connected with a hollow shaft through a main driver, an outer spiral is arranged on the outer periphery of the hollow shaft, a cutter disk is arranged at the front end of the hollow shaft, and the main driver is connected with the movable car body through a propelling mechanism. According to the borehole-blastingmethod tunnel weak large deformation and rock burst pretreatment TBM disclosed by the invention, the movable car body has self power, can move flexibly and can achieve advanced excavation; when a borehole-blasting method meets large deformation, the borehole-blasting method weak large deformation and rock burst pretreatment TBM is used; thus, the construction efficiency is improved, and the construction risk is reduced. The TBM construction method is matched with the flexibility characteristic of a mining method, major risk of construction under the special geological conditions is avoided, and the construction safety coefficient is improved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a drilling and blasting tunnel weak large deformation and rockburst pretreatment TBM. Background technique [0002] TBM (Full Face Tunnel Boring Machine) is widely used in tunnel construction due to its advantages of safety, efficiency and environmental protection. The construction environment of TBM tunnels is extremely harsh, especially in the environment of high altitude, deep burial, and ultra-long tunnels. TBM construction faces machine jamming, hard rock rockburst, soft rock large deformation, high ground (rock, water) temperature, and fault zones. The test of complex geological conditions such as broken rock mass, water inrush and mud gushing seriously affects the safety and efficiency of construction. The previous solution was to manually excavate in advance, the working conditions were harsh, the work efficiency was low, the landslide was serious, or rockbur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/11E21D9/12E21D23/16E21D23/04
CPCE21D9/1093E21D9/112E21D9/12E21D23/04E21D23/16
Inventor 李建斌张宁川卓兴建贾连辉贺飞王勇宁向可
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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