Non-blasting digging method for tunnel and underground project

An underground engineering, non-blasting technology, applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as adverse effects on social stability, panic among residents, endangering safety, etc., achieve significant technical, economic and social benefits, and save engineering investment , The effect of speeding up the construction progress

Inactive Publication Date: 2008-06-11
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology

[0003] (1) Blasting excavation for tunnels and underground works will cause vibrations in the surrounding strata and the surface. When the distance between the underground or surface buildings (structures) and the blasting site cannot meet the vibration limit requirements, the use of blasting excavation will endanger The safety of existing buildings (structures), especially in the vicinity of towns, where the surface buildings (structures) are densely populated and there are many residents. The buried depth of tunnels and underground projects is usually shallow. Deformation and cracking cause panic among residents

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  • Non-blasting digging method for tunnel and underground project

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Referring to Fig. 1, the non-blasting excavation method for tunnels and underground works of the present invention adopts hydraulic breaker as the main method and static crushing as the auxiliary excavation in the soft rock section of the tunnel; adopts static crushing as the main method in the hard rock section. , hydraulic impact hammer for excavation.

[0025] The method comprises the steps of:

[0026] ① Drilling peripheral holes 11 at a certain interval on the outer contour line of the face 10;

[0027] ②Use a hydraulic impact hammer to chisel away the soft rock section on the face 10 and the broken rock mass part 21 in the hard rock mass 20, and create at least one free face in the hard rock mass 20;

[0028] ③Drilling and distributing charge holes 30 on the hard rock mass 20 outside the outline of the air surface, and statically crushing...

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Abstract

The invention discloses a non-blasting excavation method for tunnel and underground engineering, which is applied for tunnel and underground engineering. The technical key points of the invention are: conduct excavation by taking a hydraulic breaking hammer as the primary and static breaking as auxiliary on soft rock section of tunnel; conduct excavation by taking static breaking as the primary and hydraulic breaking hammer as the auxiliary on hard rock section of tunnel. The specific procedures are: drill a number of periphery holes at certain intervals on the external outline of a tunnel face; adopt a hydraulic percussion hammer to chisel the soft rock section on the tunnel face and the broken parts in the hard rock body, so as to make at least one free face in the hard rock body; drill a number of loaded holes on the hard rock body outside the outline of the free face; conduct static breaking of the hard rock body after the loading of explosive. Therefore, this invention is able to reduce the environmental impact caused by the excavation engineering, effectively speed up the engineering progress, economize the project investment and realize outstanding social and economic benefit.

Description

technical field [0001] The invention relates to tunnels and underground engineering, in particular to a non-explosive excavation method for excavating tunnels and underground engineering. Background technique [0002] In the construction of tunnels and underground projects, it is often necessary to use non-blasting excavation for the following reasons: [0003] (1) Blasting excavation for tunnels and underground works will cause vibrations in the surrounding strata and the surface. When the distance between the underground or surface buildings (structures) and the blasting site cannot meet the vibration limit requirements, the use of blasting excavation will endanger The safety of existing buildings (structures), especially in the vicinity of towns, where the surface buildings (structures) are densely populated and there are many residents. The buried depth of tunnels and underground projects is usually shallow, and the vibration generated by blasting and excavation often ca...

Claims

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Application Information

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IPC IPC(8): E21D9/04
Inventor 陈赤坤郑长青喻渝胖涛曾满元许怀杨继明严德育陈训武
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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