Tunnel excavating longitudinal shunting method based on soft rock bottom plate

A roadway and floor technology, which is applied in the direction of tunnels, earthwork drilling, mining equipment, etc., can solve the problems of increasing the length of track laying, the inability to realize parallel operations, and increasing the cost of excavation, so as to reduce the length of track laying, reduce the amount of roadway excavation, The effect of reducing investment

Inactive Publication Date: 2019-01-22
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The level of tunneling technology and equipment is directly related to the production capacity of coal mines. High-efficiency tunneling technology and tunneling efficiency are important conditions to ensure efficient mine production. The traditional roadway tunneling and transportation process cannot achieve the purpose of parallel operation, even if parallel operation can be achieved. Operation, that is also laying double tracks, greatly increasing the length of track laying and improving the cost of excavation

Method used

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Examples

Experimental program
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Embodiment

[0021] This embodiment provides a method for longitudinal shunting of roadway excavation based on soft rock floor, and the specific steps are as follows:

[0022] Step 1: After the roadway is excavated, lay rubber pads under the roadway floor and both sides of the roadway. After laying the rubber pads, pour concrete with a thickness of 200mm, that is, the concrete track slab, and the width of the concrete track slab is 3.60m. The pouring requirement is that the mix ratio of cement mortar is cement:sand=1:2.5, and the proportion of quick-setting agent is 3-4% of the amount of cement;

[0023] Step 2: Install a layer of under-rail vibration damping pad on the concrete track slab. The thickness of the under-rail vibration damping pad is 10mm, which can effectively achieve the purpose of vibration reduction. The purpose is to ensure the smooth laying of the fixed track and the stability of the transport mine car ;

[0024] Step 3: Place the rail on the vibration damping pad and f...

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Abstract

The invention provides a tunnel excavating longitudinal shunting method based on a soft rock bottom plate. Bottom protrusion of an existing soft rock bottom channel is effectively reduced to improve channel excavating rate and save shunting space, and parallel operation in a transportation section in the tunnel excavating process is achieved so that excavating replacement can be normally conductedto improve the production capability of a mine shaft. The method belongs to the technical field of mining engineering projects.

Description

technical field [0001] The invention relates to a longitudinal shunting method for roadway excavation, which belongs to the field of mining engineering. Background technique [0002] Roadway excavation is a frequent and important work in coal mine production. Rock loading and shunting are relatively heavy tasks in the excavation. Generally, the time for rock loading accounts for about 35% to 50% of the excavation cycle time. Therefore, improving the comprehensive mechanization level of loading and transportation and its productivity are the main measures to realize rapid excavation. The existing shunting methods in the excavation working face generally have the characteristics of large space occupation, high investment in equipment, and difficulty in moving. In response to these problems, we have made some changes in the transfer process. The use of longitudinal shunting mine cars for rock slag transfer can greatly improve the tunneling efficiency and save shunting space. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21F13/00
CPCE21D9/00E21F13/00
Inventor 左宇军刘镐邬忠虎席仕军孙文吉斌刘荣波林健云税越
Owner GUIZHOU UNIV
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