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Support system for open-type full cross-section rock tunnel boring machine and support method

A roadheader, full-section technology, used in earth-moving drilling, wellbore lining, tunnel lining, etc., can solve problems such as untimely support, single support form, and time-consuming, reducing manufacturing and maintenance costs and simplifying machinery. structure, the effect of improving the driving efficiency

Active Publication Date: 2017-10-24
STATE KEY LAB OF SHIELD & TUNNELING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the insufficient supporting capacity of the open TBM seriously restricts the excavation speed of the open TBM
[0003] The traditional open TBM support form is single, and the support system is not perfect. It takes a lot of time to support the broken surrounding rock section; and the support is not timely, and it cannot be supported at the first time when the surrounding rock leaks the shield protection, it is easy to cause damage to equipment and casualties

Method used

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  • Support system for open-type full cross-section rock tunnel boring machine and support method
  • Support system for open-type full cross-section rock tunnel boring machine and support method
  • Support system for open-type full cross-section rock tunnel boring machine and support method

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: A support system for an open full-face rock boring machine, see figure 1 , including steel bar row storage and installation components, steel arch installer 2, bolter rig 3, advanced drill rig 5 and temporary shotcrete manipulator 6.

[0036] The steel bar row storage installation assembly is arranged on the top shield 8 of the tunneling machine, see figure 2 , image 3 , including the cross-sections arranged and fixed on the top of the top shield 8 of the tunneling machine are shaped partitions 7, the cavity formed between two adjacent partitions is the steel bar row storage chamber 1, and the shield steel bar row 9 is pre-installed in the storage chamber, the partition 7 is a wear-resistant steel plate, and its lower end surface It is welded and fixed on the top shield 8 of the boring machine, and the adjacent partitions are welded and fixed together.

[0037] Steel arch installer 2 comprises support frame 14 and steel arch grab manipulator, see F...

Embodiment 2

[0039] Embodiment 2: An open full-face rock boring machine support method, implemented using the support system in Embodiment 1, includes the following steps:

[0040] (1) The advanced drilling rig finds the broken strata ahead of the excavation through advanced drilling, and uses the advanced drilling rig to drill grouting holes on the top of the tunnel, and advances the surrounding rock reinforcement through grouting;

[0041](2) The anchor drilling rig selects an appropriate position to drive the anchor along the radial direction of the tunnel. The steel arch installer installs a circle of steel arches at the section where the anchors are driven in. The four steel arches are connected by bolts to form a ring, and weld the steel arch frame with each anchor rod to fix the steel arch frame;

[0042] (3) Weld the ends of the steel bars pre-installed in the shield steel bar storage cavity to the steel arch 16 sequentially. With the increase of the TBM excavation distance, the st...

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Abstract

The invention discloses a support system for an open-type full cross-section rock tunnel boring machine and a support method. The support system comprises a reinforcing steel bar row storage and installation assembly, a steel arch installer, an anchor rod drilling machine, an advancing drilling machine and a temporary whitewashing manipulator. The reinforcing steel bar row storage and installation assembly is arranged on a top shield of the tunnel boring machine, the steel arch installer comprises a support frame and a steel arch grabbing manipulator, and the anchor rod drilling machine, the advancing drilling machine and the temporary whitewashing manipulator are arranged on a main beam of the rear side of the top shield of the tunnel boring machine. According to the support system for the open-type full cross-section rock tunnel boring machine and the support method, combined utilization of multiple support methods can be achieved, and the adaptability of the open-type TBM dealing with the adverse stratum is enhanced; seamless connection and support between a reinforcing steel bar row and the shield can be achieved, and the damage to equipment and the personnel casualties caused by falling down of surrounding rocks are avoided; and installation of the reinforcing steel bar row and synchronous construction of anchor rods in the tunneling process of the open-type TBM can be achieved, and the tunneling efficiency of the open-type TBM is improved.

Description

technical field [0001] The invention relates to the technical field of tunneling equipment, in particular to a support system and a support method for an open full-face rock excavation machine. Background technique [0002] Full-face rock boring machine (TBM) is an advanced construction machine that integrates mechanical, electrical, hydraulic, control, and measurement technologies to realize rapid excavation, mucking, and support of tunnels. Compared with the traditional drilling and blasting tunnel construction, the TBM method has the characteristics of safety, reliability, high efficiency, and environmental protection. With the continuous increase of domestic mountain tunnel projects, TBM has been widely used in tunnel engineering, water diversion engineering, coal mine engineering and other fields. Full-face rock boring machines mainly include open TBM, double-shield TBM and single-shield TBM. Open TBM has received the most attention and use due to its strong geological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/087E21D11/18E21D11/10E21D20/00
CPCE21D9/0607E21D9/0671E21D9/0873E21D11/10E21D11/107E21D11/18E21D20/00Y02E10/20
Inventor 洪开荣孙振川陈馈杨延栋李凤远张兵韩伟锋赵海雷李星司景钊宋法亮杨露伟王杜娟张宏达
Owner STATE KEY LAB OF SHIELD & TUNNELING TECH
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