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Rock breaking method of cartridge type static cracking agent

A technology of swelling agent and drug roll, which is applied in blasting and other directions, can solve the problems of difficult control of water-cement ratio and slurry preparation volume, and achieve the effects of promoting promotion and application, easy control and use, and convenient use

Inactive Publication Date: 2018-11-13
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0007] Aiming at the problem that the water-cement ratio and the amount of slurry preparation are difficult to control in the static expansion cracking rock breaking process, the invention provides a static expansion cracking agent rock breaking method in the form of a drug roll, and the static expansion cracking agent is filled with a cylindrical non-woven bag The powder is made into a static expansion agent in the form of a medicine roll. After soaking in water to reach the saturated state of water absorption, it is filled into the drill hole segment by segment with bakelite gun sticks, which simplifies the operation of static expansion and rock breaking and is easy to control the water-cement ratio, breaking through the static expansion agent. Conventional grout filling application mode

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  • Rock breaking method of cartridge type static cracking agent
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  • Rock breaking method of cartridge type static cracking agent

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Embodiment Construction

[0032] The cross-sectional area of ​​the roadway at the entrance section of the main Shimen chamber in the bottom yard of a mine is only 10.1 m 2 , the air volume passing through is 86 m 3 / s, the wind speed has exceeded the highest standard 8m / s stipulated in the "Coal Mine Safety Regulations", which does not meet the requirements of the "Coal Mine Safety Regulations". The roadway in this section is 9m long. It is not only the main passage for coal transportation, material transportation, gangue transportation and personnel entering and exiting the mine, but also the necessary route for laying various pipes and cables. If the conventional blasting method is adopted, it will inevitably affect the production of the mine and the safety of personnel and vehicles. Therefore, static crushing technology is used to expand the sectional area of ​​this section of roadway.

[0033] In order not to affect the drainage work of the parking lot at the bottom of the shaft, it is inconvenie...

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Abstract

The invention relates to a rock breaking method of a cartridge type static cracking agent, and belongs to the technical field of rock breaking methods of static cracking agents. The problems that in the static cracking rock breaking technological process, the water-cement ratio and the size preparation quantity are not easy to control can be solved. A cylindrical non-woven bag is filled with static cracking agent powder to be made into the cartridge type static cracking agent, and after the static cracking agent is soaked in water to achieve the saturated water absorption state, drilled holesare filled with the static cracking agent section by section through a bakelite tamping bar. According to the rock breaking method, the static cracking rock breaking operation link can be simplified,the water-cement ratio can be controlled, and the conventional grouting filling application mode of the static cracking agent can be broken through.

Description

technical field [0001] The invention belongs to the technical field of static expansion cracking agent rock breaking method, and in particular relates to a static expansion cracking agent rock breaking method in the form of a medicine roll, which is a charging form and a breaking method that simplifies the static rock breaking operation link and controls the water-cement ratio. rock method. Background technique [0002] Static swelling agent is a new type of rock-breaking material composed of hydration expansion material, hydration retarder, hydraulic material and water reducing agent. The main component is calcium oxide. The principle of rock breaking is that calcium oxide reacts with water to release heat. And accompanied by volume expansion, the sum of volume expansion and thermal expansion is greater than the borehole volume, resulting in expansion pressure. The static expansion agent is not a dangerous product. It is not strictly restricted in the purchase, transportat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D1/08F42D3/04
Inventor 任兴云郝兵元李铁良李丰亮李强
Owner TAIYUAN UNIV OF TECH
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