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

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...

AI Technical Summary

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 the properties of the coal seam have not yet formed a way to improve the gas drainage effect. industrially available methods”

In my country's high-gas mines, quite a few mines are low-permeable hard coal seams that are difficult to pump, and the gas drainage rate is very low, which cannot achieve the purpose of drainage and outburst prevention

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