Tunnel invert non-blasting excavation method

A tunnel, non-explosive technology, applied in tunnels, tunnel lining, earthwork drilling and mining, etc., can solve the problems of high cost and slow construction progress, and achieve the effect of uniform part, reasonable spacing setting and uniform hole layout

Active Publication Date: 2020-05-12
CHINA METALLURGICAL CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the specific construction process, some tunnel excavation sites are close to residential areas, and the buried depth is relatively shallow. It is not suitable to use blasting construction. The rock can only be broken by shelling, but this method is only effective for rocks with low hardness. Hard rock, slow construction progress and high cost

Method used

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Comparison scheme
Effect test

Embodiment

[0013] The tunnel inverted arch non-explosive excavation method provided in this embodiment has the following steps: S1, construction preparation, preparing rock cutters, drilling machines and multiple splitting rods, and preparing suitable drill bits according to the size of the splitting rods; S2 , use a rock cutter to cut the tunnel invert, and the longitudinal depth of cutting is less than the design depth of the invert; S3, use a drilling machine to drill holes on the cut invert wall, and the drilling depth is the length of the splitting rod; S4, in Put a splitting rod into the hole, and the splitting direction is the excavated place. Every 5-10 minutes, the splitting rod is connected to the splitting machine through the hydraulic pipe, and the hydraulic device of the splitting machine is started to drive the jack inside the splitting rod. The rock is ejected, and the direction of ejection is the side that has been excavated with the free face. After the rock is broken, it...

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PUM

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Abstract

The invention discloses a tunnel invert non-blasting excavation method which comprises the following steps of S1, preparing for construction; S2, adopting a rock cutter for cutting a tunnel invert, wherein the longitudinal depth of cutting is smaller than the designed depth of the invert; S3, drilling a cut invert wall by adopting a drilling machine, wherein the drilling depth is the length of a splitting rod; S4, putting the splitting rod in the hole, wherein a splitting direction is an excavated part, 5 to 10 minutes are taken each time, and the splitting rod is connected with a splitting machine through a hydraulic pipe; starting a hydraulic device of the splitting machine, and driving a jack in the splitting rod to eject rock, wherein the ejecting direction is toward one side excavatedwith a free face; and after rock crushing, taking out to put into a next hole, and circularly splitting the rock; S5, shelling to crush larger rock, and using an excavator for loading and transferring stone to a slag yard; S6, after cleaning up the rock, measuring whether the tunnel invert reaches to the designed elevation or not, and for an under-excavation part, shelling to crush or manually air-picking and repairing; and S7, supporting the inverted arch.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a non-explosive excavation method for a tunnel inverted arch. Background technique [0002] Inverted excavation of traditional tunnels is usually carried out by blasting and then broken by shelling. However, in the specific construction process, some tunnel excavation sites are close to residential areas, and the buried depth is relatively shallow. It is not suitable to use blasting construction. The rock can only be broken by shelling, but this method is only effective for rocks with low hardness. Hard rock, slow construction progress and high cost. Based on this, the applicant wants to improve the construction technology, reduce the impact of the construction team on the residential area, and at the same time increase the construction efficiency and reduce the construction cost. Contents of the invention [0003] In view of the deficiencies of the above-mentioned prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/10E21D9/12E21D11/10E21D11/18E21D20/00
CPCE21D9/00E21D9/10E21D9/12E21D11/10E21D11/18E21D20/00
Inventor 陈科饶勇
Owner CHINA METALLURGICAL CONSTR ENG GRP
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