Kerf sand inclusion blasting cartridge and blasting installation device and production technology thereof

An installation device and slitting technology, applied in the direction of ammunition, ammunition storage, weapon accessories, etc., can solve the problem that the gas gushing cannot be guaranteed to be reduced to the required level, the gas drainage effect has not been improved, and the gas drainage cannot be achieved. Outburst prevention and other problems, to achieve the effect of improving underground safety operations, reducing gas disasters, and reducing ventilation costs

Inactive Publication Date: 2010-09-08
HOHAI UNIV
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Problems solved by technology

It is an ideal method to pre-drain the coal seam gas in the unmined area, but it can only be used in mines with high coal seam permeability. depth, using drilling to pre-drain coal seam gas cannot guarantee that the gas gushing will be reduced to the required level, and all attempts to increase the amount of coal seam gas drainage that affect

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  • Kerf sand inclusion blasting cartridge and blasting installation device and production technology thereof
  • Kerf sand inclusion blasting cartridge and blasting installation device and production technology thereof
  • Kerf sand inclusion blasting cartridge and blasting installation device and production technology thereof

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Embodiment Construction

[0021] The accompanying drawings disclose an embodiment of the present invention without limitation, and the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 , figure 2 As shown, the slit sand-containing drug pack of the present invention includes a slit tube 1 and a drug pack 21 installed in the slit tube 1, and the tube wall of the slit tube 1 is equally spaced in a circular array. There are four slits 11, the slits 11 have a slit width of 3.0-5.0 mm, and at the same time, a sand-containing cartridge is arranged between the drug pack 21 and the slit pipe 1, and the drug pack 21 is placed in the sand-containing cartridge Inside, the diameter of the slit pipe 1 is 2.0-4.0 mm wider than that of the sand-containing cartridge.

[0023] During blasting, the slit sand-containing charge bag of the present invention is installed in the blast hole 3, such as image 3 As shown, th...

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Abstract

The invention discloses a kerf sand inclusion blasting cartridge and a blasting installation device and production technology thereof. The kerf sand inclusion blasting cartridge comprises a kerf pipe and a blasting cartridge installed in the kerf pipe, wherein the pipe wall of the kerf pipe is provided with four kerfs at equal interval in the mode of a ring array, and a sand inclusion cartridge case is arranged between the blasting cartridge and the kerf pipe; the blasting cartridge is arranged in the sand inclusion cartridge case; thus, when the kerf sand inclusion blasting cartridge is arranged in the blast hole arranged in a coal mine, the kerf sand inclusion blasting cartridge instantly forms a crack on the kerf direction and forms a radial crack net on other directions, thus manually improving coal layer crack communication network, increasing coal layer air permeability, and obtaining the purpose of improving gas pumping and discharging. The technical scheme of the invention carries out gas pumping and discharging to a coal mine with low air permeability; compared with the pumping and discharging result, the pumping and discharging amount of gas is 1.79-2.98 times of that of common gas.

Description

technical field [0001] The invention relates to a slit sand-containing charge bag, a blasting installation device and a production process thereof, and belongs to the field of coal mine safety. Background technique [0002] Coal plays an important role in the energy system and is the main energy source in our country and even in the world. As my country's economy continues to grow at a high speed, the demand for coal will maintain a strong growth momentum, and the demand will grow steadily. During the "Tenth Five-Year Plan" period, the focus of the development of coal mine safety technology is to apply high-tech to solve key technical problems in the prevention and control of major coal mine disasters, and to improve the comprehensive prevention and control capabilities of coal mine disasters. One of the key topics is to study gas drainage technology in high gas and low permeability coal mines. Although my country's coal resources are abundant and distributed in a wide are...

Claims

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Application Information

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IPC IPC(8): F42B39/02
Inventor 阮怀宁谢华刚赵正信吴玲丽温森周琦张静王福章余华中刘金辉丁道红刘迅蔡军李鑫
Owner HOHAI UNIV
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