Method for one-time blasting shaft forming through deep hole sectional triangle net slotting

A triangular mesh and deep hole technology, applied in blasting and other directions, can solve problems such as high difficulty in excavation, high safety risks, and long construction period

Active Publication Date: 2019-07-19
INST OF DEFENSE ENG ACADEMY OF MILITARY SCI PLA CHINA
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  • Abstract
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  • Application Information

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Problems solved by technology

This construction method has all the disadvantages of the downward construction method except that it does not need artificial slag extraction in the well, and it is more dangerous.
[0004] The construction of underground shafts has a series of problems such as high difficulty in excavation, high safety risks, long construction period, and high production costs. The above problems directly affect the construction of national projects and have always troubled construction units.

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  • Method for one-time blasting shaft forming through deep hole sectional triangle net slotting
  • Method for one-time blasting shaft forming through deep hole sectional triangle net slotting
  • Method for one-time blasting shaft forming through deep hole sectional triangle net slotting

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Embodiment Construction

[0029] The present invention can be explained in more detail by the following examples, and the present invention is not limited to the following examples;

[0030] combined with Figure 1~4 The method for forming a well by blasting a deep-hole subdivision triangular network cutting at one time, specifically comprises the following steps:

[0031] The first step, digging the chamber:

[0032] Such as figure 1 As shown, firstly excavate chambers at the bottom and top of the shaft to be excavated, and when the top of the shaft to be excavated extends to the surface, there is no need to excavate chambers at the top;

[0033] The second step is to arrange blastholes and drill holes:

[0034] Continuing from the previous step, use a deep hole drilling rig to drill holes along the entire length of the shaft in the shaft. All the blast holes will be constructed at one time. Caving and crushing holes are arranged in the caving and crushing area between the edges, and pre-splitting...

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Abstract

The invention discloses a method for one-time blasting shaft forming through deep hole sectional triangle net slotting. A key technology of underground vertical shaft blasting excavation is studied, the key problem in blasting excavation is solved, a new construction method of one-time blasting excavation shaft forming of an underground vertical shaft is put forward, the construction efficiency isimproved effectively, production force is liberated, the method for one-time blasting shaft forming through deep hole sectional triangle net slotting has remarkable economic benefits and social benefits and is suitable for large-scale application and popularization.

Description

technical field [0001] The invention relates to a method for forming a well by one-time blasting, in particular to a method for forming a well by one-time blasting for deep hole partition triangular network cutting. Background technique [0002] Known, traditional vertical shaft construction technology mainly contains two kinds of methods, namely downward construction method, upward construction method. Among them, the downward construction method, that is, drilling from top to bottom, blasting, smoke exhaust, risk removal, slag removal, trimming, support, measurement, etc., repeats the cycle many times, and gradually excavates in layers until the well is dug through. until. With this construction method, due to the narrow underground working surface, difficult ventilation, frequent lifting, harsh operating conditions, and low work efficiency, underground operators have nowhere to hide when falling objects or other dangers occur, so shafts are excavated in broken rock masse...

Claims

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Application Information

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IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 陈胜云张鏖吴华杰苏荣华田志敏王雪明郑磊王静李凤玲
Owner INST OF DEFENSE ENG ACADEMY OF MILITARY SCI PLA CHINA
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