CN-115790301-B - Charging method suitable for on-site mixed explosive charging

Abstract

The invention provides a charging method suitable for on-site mixed explosive, which comprises the following steps of a blast hole perforating process, a charging pipe embedding process, a conveying pipe arranging process, a charging process, an emulsion explosive foaming process, a lead arranging process and a lead arranging process, wherein the connecting arrangement is carried out on the blasting leads in the lead arranging process; according to the method for loading the mixed explosive, which is formed by combining the perforation process of the blast hole, the pre-burying process of the loading tube, the arrangement process of the medicine conveying tube, the loading process, the foaming process of the emulsion explosive and the arrangement process of the lead wires, the matching of the tube withdrawing speed and the loading speed can be realized, the automation level of the underground mining site mixed explosive truck is improved, and the labor intensity is effectively reduced.

Inventors

• ZHAO MINGSHENG
• ZHOU JIANMIN
• JIA YONGSHENG
• YAO YINGKANG
• XIE XIANQI
• LI JIE
• YU HONGBING
• KANG QIANG

Assignees

• 江汉大学
• 贵州大学
• 保利新联爆破工程集团有限公司

Dates

Publication Date

20260508

Application Date

20221129

Claims (6)

1. 1. The method for charging the on-site mixed explosive is characterized by comprising the following steps of: The method comprises the steps of firstly, drilling holes at a position to be blasted through drilling equipment in the process of drilling the holes; step two, a pre-burying process of a charging tube, wherein the charging tube is positioned and installed in a blast hole in the pre-burying process of the charging tube; step three, a drug delivery pipe is arranged, wherein in the drug delivery pipe arranging process, the drug delivery pipe extends to the bottom of the drug loading pipe along the edge of the inner side wall of the drug loading pipe, and the drug delivery pipe is formed by combining a pipeline I and a pipeline II; a fourth step of charging, in which the explosive emulsion matrix is conveyed into the charging pipe through a first pipeline of the conveying pipe, and the emulsion explosive sensitization base solution is conveyed into the charging pipe through a second pipeline of the conveying pipe; the explosive emulsion matrix is prepared from an oil phase and a water phase in a ratio of 2:8; The oil phase is formed by combining 60-85% of paraffin-based neutral oil and 15-40% of emulsifying agent, and the paraffin-based neutral oil is formed by combining 150N base oil, 150SN base oil, 70N base oil and 15# white oil; the weight ratio of the 70N base oil, the 150SN base oil and the 15# white oil is 30-45% of the 70N base oil, 22-37% of the 150N base oil, 14-26% of the 150SN base oil and 21-33% of the 15# white oil; The emulsifier consists of oleic acid emulsifier and modified silicon dioxide particles, wherein the oleic acid emulsifier is prepared by mixing sorbitan monooleate and triethanolamine oleate in a ratio of 7:13, the modified silicon dioxide particles are prepared by mixing dimethyl dichlorosilane modified silicon dioxide particles and polydimethylsiloxane modified silicon dioxide particles in a ratio of 4:23, and the ratio between the oleic acid emulsifier and the modified silicon dioxide particles is 17:5; Step five, in the foaming process of the emulsion explosive, the emulsion matrix of the emulsion explosive and the sensitization base solution of the emulsion explosive are mixed in a medicine conveying pipe, and then the mixture is allowed to stand for 20-30 minutes in the medicine conveying pipe so as to foam and form the emulsion explosive; And step six, arranging the lead wires, wherein in the arranging process of the lead wires, the blasting lead wires are connected and arranged.
2. 2. The method for loading explosive on site according to claim 1, wherein the end of the explosive delivery pipe is provided with a pressure sensor for monitoring the hydraulic pressure in the blast hole so as to realize the detection of the explosive delivery flow rate of the explosive delivery pipe and the liquid level in the blast hole.
3. 3. A method for loading an explosive mixture on site according to claim 2, wherein the drug delivery tube is retracted during the drug delivery process, and the retraction speed of the drug delivery tube is determined according to the drug delivery flow rate in the drug delivery tube.
4. 4. The method for loading an explosive mixture on site according to claim 1, wherein the aqueous phase is prepared from ammonium nitrate and water in a ratio of 19:11.
5. 5. The method for loading the on-site mixed explosive according to claim 1, wherein in the loading process, the emulsion explosive sensitization base solution is composed of water and an organic solvent, the organic solvent is prepared from ethanol, glycol and glycerin in a ratio of 2:5:3.
6. 6. The method for charging an explosive on site according to claim 5, wherein the ratio of the water to the organic solvent is 2:7, the organic solvent is prepared by mixing and stirring in a stirring tank, the stirring condition is that the stirring is carried out at a low speed for 5-10 min under a normal temperature condition, and then water is added for further stirring for 3-5 min.

Description

Charging method suitable for on-site mixed explosive charging Technical Field The invention relates to the technical field of explosive charging, in particular to a charging method suitable for on-site mixed charging of explosives. Background The emulsion explosive is a novel industrial explosive developed in the 70 th century, which has the advantages of high density, high explosion speed, high strength, good water resistance, small critical diameter, good initiation sensitivity and the like, so that the emulsion explosive is widely applied to various industries at home and abroad; The emulsion explosive is usually charged by adopting an on-site mixed explosive truck, and compared with the finished explosive, the on-site mixed explosive truck is used for charging and blasting operation, so that the method has the advantages of high working efficiency, good blasting effect and the like, but the existing emulsion explosive burying process has certain defects, so that the emulsion explosive burying construction efficiency is lower. Disclosure of Invention The invention aims to provide a charging method suitable for on-site mixed explosive loading so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides a charging method suitable for on-site mixed explosive, which comprises the following steps: The method comprises the steps of firstly, drilling holes at a position to be blasted through drilling equipment in the process of drilling the holes; step two, a pre-burying process of a charging tube, wherein the charging tube is positioned and installed in a blast hole in the pre-burying process of the charging tube; step three, a drug delivery pipe is arranged, wherein in the drug delivery pipe arranging process, the drug delivery pipe extends to the bottom of the drug delivery pipe along the edge of the inner side wall of the drug delivery pipe, and the drug delivery pipe is formed by combining a first pipeline and a second pipeline; a fourth step of charging, in which the explosive emulsion matrix is conveyed into the charging pipe through a first pipeline of the conveying pipe, and the emulsion explosive sensitization base solution is conveyed into the charging pipe through a second pipeline of the conveying pipe; Step five, in the foaming process of the emulsion explosive, the emulsion matrix of the emulsion explosive and the sensitization base solution of the emulsion explosive are mixed in a medicine conveying pipe, and then the mixture is allowed to stand for 20-30 minutes in the medicine conveying pipe so as to foam and form the emulsion explosive; And step six, arranging the lead wires, wherein in the arranging process of the lead wires, the blasting lead wires are connected and arranged. Preferably, a pressure sensor is arranged at the end part of the medicine delivery pipe, and the pressure sensor is used for monitoring the hydraulic pressure in the blast hole so as to realize the detection of the medicine delivery flow speed of the medicine delivery pipe and the liquid level height in the blast hole. Preferably, in the process of loading the medicine, the medicine delivery pipe is in the process of delivering the medicine, and the back-off operation of the medicine delivery pipe is carried out at the same time, and the back-off speed of the medicine delivery pipe is determined according to the speed of medicine delivery flow in the medicine delivery pipe. Preferably, the explosive emulsion matrix is prepared by proportioning an oil phase and a water phase in a ratio of 2:8. Preferably, the oil phase is composed of 60-85% of paraffin-based neutral oil and 15-40% of emulsifier, and the paraffin-based neutral oil is composed of 150N base oil, 150SN base oil, 70N base oil and 15# white oil. Preferably, the weight ratio of the 70N base oil to the 150SN base oil to the 15# white oil is 30-45% of the 70N base oil; 150N base oil 22-37%; 14-26% of 150SN base oil; 21-33% of 15# white oil. Preferably, the composite emulsifier consists of oleic acid emulsifier and modified silicon dioxide particles, wherein the oleic acid emulsifier is prepared by mixing sorbitan monooleate and triethanolamine oleate in a ratio of 7:13, the hydrophobically modified silicon dioxide particles are prepared by mixing dimethyl dichlorosilane modified silicon dioxide particles and polydimethylsiloxane modified silicon dioxide particles in a ratio of 4:23, and the ratio between the oleic acid emulsifier and the modified silicon dioxide particles is 17:5. Preferably, the water phase is prepared from ammonium nitrate and water in a ratio of 19:11. Preferably, in the charging process, the emulsion explosive sensitization base solution is composed of water and an organic solvent, the organic solvent is prepared from ethanol, glycol and glycerin in a ratio of 2:5:3. Preferably, the ratio of the water to the organic solvent is 2:7, the organic solvent is prepared by mixing and stirring in