Excavation method based on local section blasting and heading machine excavation

A technology of roadheader and section, which is applied in blasting, earthmoving, mining equipment, etc., can solve the problems of low driving speed and footage damage, and achieve the effect of high driving efficiency, avoiding defects and controlling surrounding rock damage.

Active Publication Date: 2019-11-12
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0003] The purpose of the present invention is to propose an excavation method based on local section blasting and roadheader excavation, which is used to solve the technical problems of uncontrollable footage damage and low excavation speed in the existing rock breaking technology

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  • Excavation method based on local section blasting and heading machine excavation
  • Excavation method based on local section blasting and heading machine excavation
  • Excavation method based on local section blasting and heading machine excavation

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-3 Shown, a kind of excavation method based on local section blasting and roadheader excavation is characterized in that: the method comprises the following steps:

[0030] Step 1: Measure the excavation face;

[0031] Step 2: Determine the free operation area of ​​the blast hole drilling tool and the parameters of the blast hole;

[0032] Step 3: Set blasting parameters;

[0033] Step 4: implement blasting;

[0034] Step 5: The rock mass is loosened and pre-cracked, and the roadheader excavates the rock mass.

[0035] The first step: measuring the excavation face includes: first measuring the excavation face of the roadway. This excavation method is suitable for various excavation sections. Generally, it is a circular contour area. For hard rock excavation, it is based on the theoretical basis that blasting can impro...

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Abstract

The invention belongs to the technical field of tunneling blasting, and particularly relates to an excavation method based on local section blasting and heading machine excavation. The method comprises the following steps of 1, measuring an excavation tunnel face; 2, determining a free operation area of a blast hole drilling tool and blast hole blasting parameters; 3, setting blasting parameters;4, performing blasting; and 5, loosening and pre-cracking rock mass, and excavating the rock mass by a heading machine. According to the excavation method, the advantages that a drilling machine can be freely implemented in a local area of a cutterhead and a cutter body of the heading machine for drilling can be utilized so that drilling equipment can be conveniently arranged and controlled in thelocal area to be not limited by a device position of an existing cutterhead module; and a manual drilling type common pneumatic drill or a mechanical drilling type hydraulic drilling rig or other equipment can be used for operation, so that the effects of being simple and convenient, high in tunneling efficiency and good in chamber forming are achieved.

Description

technical field [0001] The invention belongs to the technical field of tunneling and blasting, and in particular relates to an excavation method based on local section blasting and tunneling machine excavation. Background technique [0002] Excavation method is of great significance to roadway and other tunneling projects, which directly determines the tunneling efficiency of tunneling operations. Especially for the excavation of medium-hard rock mass, different excavation methods play an important role. Reasonable excavation methods are conducive to the shape of the rock mass and cavity formation, and are easy to control the damage of the surrounding rock at the face of the tunnel, thus To achieve a good tunneling effect. At present, the excavation methods of projects at home and abroad can be divided into two types: blasting excavation and mechanical excavation. Among them, blasting excavation uses explosives, detonators and other blasting consumables to detonate rock and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D1/10F42D3/04E21D9/00E21D9/10
CPCF42D1/00F42D1/10F42D3/04E21D9/006E21D9/10
Inventor 王驹满轲雷升祥王雁军廖建炜程永亮刘绍宝
Owner BEIJING RES INST OF URANIUM GEOLOGY
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