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Multi-mode hard rock roadheader

A hard rock roadheader, multi-mode technology, applied in wellbore lining, tunnel lining, underground chambers, etc., can solve the problems of long construction period, affecting the driving efficiency, low safety of shotcrete support, etc., to ensure construction safety. , The effect of reducing construction cost and improving construction speed

Pending Publication Date: 2019-11-15
TIANHE MECHANICAL EQUIP MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long shield body, it is easy to jam the machine, especially in the large deformation and convergence stratum, the jam processing time is longer, which affects the tunneling efficiency
[0005] Due to the complex and diverse stratum structure, a single-mode TBM cannot meet the construction requirements
At present, there is a double-structure TBM design, such as the double-structure TBM disclosed in the patent application with the application number CN 201910260246.5. Although this TBM can realize flexible switching between spray-anchor support and segment support, the safety of spray-anchor support is relatively high. Low, long construction period, high cost of segment support

Method used

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Examples

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Embodiment 1

[0030] Embodiment one: as attached figure 1 As shown, a multi-mode hard rock tunneling machine includes a shield 3, a main drive 2, a cutter head 1, a main beam 4, a rear support 9, a steel arch spray-mix support mechanism, and a pressure-injected concrete support mechanism. It is defined that the forward direction of the multi-mode hard rock roadheader is its front, and the reverse direction is its rear.

[0031] The main drive 2 is arranged in the shield 3, and the shield 3 is connected with the main drive 2 through the shield 3 oil cylinder. The cutter head 1 is arranged in front of the main drive 2, so that the cutter head 1 can excavate the surrounding rock under the drive of the main drive 2 to form a tunnel, and the shield 3 and its rear parts are located in the excavated tunnel. The main beam 4 is arranged behind the main drive 2 and connected with the main drive 2 . The rear support 9 is arranged at the rear of the main beam 4 .

[0032] The steel arch spray-mixed ...

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Abstract

The invention relates to a multi-mode hard rock roadheader. The multi-mode hard rock roadheader comprises a shield, a main drive, a cutter head, a main beam, a rear support, a steel arch frame concrete-spraying supporting mechanism and an pressing-injecting-type concrete supporting mechanism; the steel arch frame concrete-spraying supporting mechanism comprises a supporting propulsion system slidably arranged on the main beam, an anchor drilling rig arranged on the main beam for installing anchor rods, a rear support boot plate arranged on the rear support and capable of extending and retracting; the pressing-injecting-type concrete supporting mechanism comprises a plurality of auxiliary propulsion cylinders distributed on the inner periphery of the shield, a rear support wheel set arranged on the rear support and capable of extending and retracting, a steel formwork assembling machine for installing a steel formwork or assembling a steel arch, a steel formwork removing machine for removing the steel formwork and a grouting device for pressing-injecting-type concrete between the installed steel formwork and the inner wall of a tunnel. Flexible switching of different supporting modes can be achieved, real-time supporting closure, strong supporting and fast passage can be achieved, construction safety is ensured, and the construction speed is improved.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a hard rock boring machine used in tunnel construction, in particular to a multi-mode hard rock boring machine. Background technique [0002] With the construction of railway tunnels in western China, hard rock tunnel boring machines (abbreviated as TBMs) have been widely used. The classification of TBM includes open TBM and shield TBM. [0003] Open TBM technology is very mature, but has certain limitations. The open TBM is mainly suitable for hard rock formations with good stability and self-supporting properties of type II and III, and has poor adaptability to fracture zones and soft rock formations. When the open TBM passes through the stratum of the fault fracture zone, it generally adopts advanced grouting reinforcement, steel bar rows, arch frames, and anchor bolts for joint support. The fracture zone causes problems such as easy stepping on the shoe and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/087E21D11/10
CPCE21D9/06E21D9/0607E21D9/087E21D11/10E21D11/105
Inventor 张林靳党鹏万坤王涛唐启王舒菲张文强钱文启
Owner TIANHE MECHANICAL EQUIP MFG
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