CN-121977402-A - Preparation method and system of porous granular ammonium oil anti-water-absorption explosive

CN121977402ACN 121977402 ACN121977402 ACN 121977402ACN-121977402-A

Abstract

The invention relates to the technical field of emulsion explosives, in particular to a porous granular ammonium oil water-proof explosive preparation system and a filling method, comprising an isolation mechanism, a filling mechanism and a filling mechanism, wherein the isolation mechanism is used for filling an emulsion explosive into a blast hole after being treated and comprises a filling pipe, a brushing assembly which is arranged at the upper end of the filling pipe and is used for coating a film on the side wall of the blast hole, and a splicing assembly which is arranged at the lower end of the filling pipe and is used for coating a film on a bottom layer; the drainage mechanism is arranged at the upper end of the filling pipe, is arranged at the outer side of the filling pipe and used for discharging water in the blast holes and cleaning the side wall, and comprises a plurality of groups of drainage pipes arranged at the outer side of the filling pipe, a converging groove arranged at the upper end of the filling pipe and a cleaning component arranged at the outer side of the filling pipe, and the filling mechanism is arranged on the filling pipe and used for releasing emulsion explosive. Solves the technical problems of more influencing factors and low filling efficiency in field mixed filling.

Inventors

PAN BO
HUANG XIAOHONG
JIN HONG
YIN LIANGSHENG
Zhang Tanhai
LI JIANAN
TANG HONGSHAN
FU JUNXIANG

Assignees

浙江永联民爆器材有限公司
浙江永联民爆器材有限公司永进分公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. A system for preparing a porous granular ammonium oil anti-water-absorbing explosive, comprising: The isolation mechanism (1) is used for processing the emulsion explosive and then filling the emulsion explosive into the blast hole, and comprises a filling pipe (11), a brushing assembly (12) which is arranged at the upper end of the filling pipe (11) and is used for coating the side wall of the blast hole, and a splicing assembly (13) which is arranged at the lower end of the filling pipe (11) and is used for coating the bottom layer; the upper end of the filling pipe (11) is connected with a hose, and a diverter valve and a mixing mechanism are arranged in the filling pipe; The method comprises the steps of inputting emulsion explosives into an isolation mechanism (1), enabling part of the emulsion explosives to mix with a cross-linking agent to lift viscosity to form an adhesion matrix, then uniformly attaching the adhesion matrix to the side wall of a blast hole by utilizing a brushing assembly (12) to form a layer of adhesion matrix, simultaneously forming a bottom isolation layer by utilizing a splicing assembly (13) to adhere the adhesion matrix to the bottom isolation layer to form a barrel-shaped structure, namely, isolating water in the blast hole is realized, stable attachment of the emulsion explosives to the middle of the blast hole is realized, and meanwhile, the influence of the cross-linking agent mixed into the emulsion explosives on the explosion performance of the emulsion explosives is avoided.
2. The preparation system of the porous granular ammonium oil anti-water-absorbing explosive according to claim 1, wherein the brushing assembly (12) comprises a discharging pipe (121) arranged at the upper end of a filling pipe (11), a leveling ring (122) rotatably connected below the discharging pipe (121), a plurality of groups of leveling frames (123) slidingly connected on the leveling ring (122), and a plurality of groups of scraping plates (124) hinged on the leveling frames (123); The brushing assembly (12) releases the attached matrix above the side wall of the blast hole filling position, and scrapes and sweeps the attached matrix by utilizing the downward flowing process of the attached matrix, so that the attached matrix can be uniformly attached to the side wall of the blast hole, and the filling stability is ensured.
3. A system for preparing a porous granular ammonium oil anti-water-absorbing explosive according to claim 1, characterized in that the split assembly (13) comprises an inner circular forming part (131) for forming a bottom isolating layer, an outer circular forming part (132) and a coating part (133), wherein the outer circular forming part (132) comprises a control frame (1321) which is connected outside a filling pipe (11) in a sliding manner, a plurality of groups of connecting rods (1322) hinged on the control frame (1321), a first umbrella surface (1323) fixed on the outer side of the connecting rods (1322), a stabilizing wheel (1324) connected at the end part of the connecting rods (1322) in a rotating manner, and a first scraping strip (1325) connected on the control frame (1321) and positioned below the first umbrella surface (1323).
4. A porous granular ammonium oil water-proof explosive preparation system according to claim 3, characterized in that the inner circular forming member (131) comprises a receiving groove (1311) provided at the lower end of the filling pipe (11), a central rod (1312) slidably connected in the receiving groove (1311), a plurality of groups of bone rods (1313) hinged on the central rod (1312), a second umbrella surface (1314) fixed outside the bone rods (1313), and a second scraping strip (1315) rotatably connected under the second umbrella surface (1314).
5. A porous granular ammonium oil water-proof explosive preparation system according to claim 3, characterized in that the coating member (133) comprises a plurality of groups of hinge rods (1331) rotatably connected below the outer circle forming member (132), a discharge opening (1332) hinged at the outer end of the hinge rods (1331), and a telescopic tube (1333) arranged inside the hinge rods (1331); The split assembly (13) sequentially coats the attached substrate on the first umbrella surface (1323) to form a circular ring, then fixes the circular ring on the coated attached substrate on the side wall, forms an inner circle on the second umbrella surface (1314) with the attached substrate, and is compounded in the middle of the circular ring, so that a complete bottom isolation layer is formed, the bottom isolation layer is utilized to isolate the normal emulsified substrate from contacting with water below, and a certain support is provided for the emulsified substrate, so that dilution and falling are avoided.
6. The preparation system of the porous granular ammonium oil anti-water-absorbing explosive according to claim 1, wherein the loading tube (11) further comprises a plurality of groups of telescopic wheels (111) which are telescopically arranged at the upper end of the loading tube (11), a fixing frame (112) for pulling the loading tube (11) to move and release, and a tractor (113) which is arranged on the fixing frame (112) and is connected with the upper end of the loading tube (11) through a cable; The filling pipe (11) is pulled by the tractor (113) to realize release and rising, and is matched with the stabilizing wheel (1324) by the telescopic wheel (111), so that the filling pipe (11) is always kept at the center of a blast hole in the filling process, and the adhesion matrix is uniformly distributed when the brushing assembly (12) and the splicing assembly (13) work, and a complete barrel-shaped structure can be formed.
7. The preparation system of the porous granular ammonium oil anti-water-absorbing explosive according to claim 1, further comprising a drainage mechanism (2) arranged at the upper end of the filling pipe (11), wherein the drainage mechanism (2) is arranged outside the filling pipe (11) and is used for draining water in blast holes and cleaning the side wall at the same time, and comprises a plurality of groups of drainage pipes (21) arranged outside the filling pipe (11), a confluence groove (22) arranged at the upper end of the filling pipe (11) and a cleaning assembly (23) arranged outside the filling pipe (11).
8. The system for preparing a porous granular ammonium oil anti-water-absorbing explosive according to claim 7, wherein the cleaning assembly (23) comprises a plurality of groups of spray heads (231) arranged outside the reflux drum, a wind ring (232) arranged above the spray heads (231), a sliding frame (233) slidingly connected to the filling pipe (11), and a plurality of groups of cleaning rollers (234) rotatably connected to the sliding frame (233); The drainage mechanism (2) discharges part of water in the blast holes, so that the water surface stays below the filling position, and then the bottom isolation layer is arranged above the water surface, so that the water reserved at the bottom is used as an explosion conduction medium, the explosion performance is enhanced, the buoyancy of the water to the emulsion explosive and the bottom isolation layer is utilized to support the emulsion explosive, the side wall is cleaned in the drainage process, a large number of grooves and scratches are reserved on the side wall, and the adhesion of the side wall to a substrate is promoted.
9. The preparation system of the porous granular ammonium oil anti-water-absorbing explosive according to claim 1, further comprising a filling mechanism (3) which is arranged on the filling pipe (11) and used for releasing the emulsion explosive, and comprises a discharge hole (31) which is arranged at the lower end of the filling pipe (11) and is positioned outside the containing groove (1311), a placing groove (32) which is arranged on the side wall of the filling pipe (11), a supporting rod (33) which is hinged in the placing groove (32), a roll shaft (34) which is rotatably connected on the supporting rod (33), and a distributing hole (35) which is arranged in the placing groove (32) and is arranged in a telescopic way; After the adhering matrix is coated on the side wall and the circular ring and the inner circle of the bottom isolation layer are formed, a small amount of emulsifying matrix is released on the surface of the adhering matrix by utilizing a material distributing opening (35) in time, so that the emulsifying matrix and the adhering matrix are mutually fused before the adhering matrix is completely crosslinked, and then a large amount of emulsifying explosive is released, so that the phenomenon that interface mutation exists between the emulsifying explosive and the adhering matrix after the crosslinking reaction of the adhering matrix is completed is avoided, and the explosion effect is ensured.
10. A method for preparing porous granular ammonium oil anti-water-absorbing explosive, which is applied to the porous granular ammonium oil anti-water-absorbing explosive preparation system as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: Firstly, draining and cleaning, namely lowering a filling pipe (11) into a blast hole, draining water in the blast hole, and flushing the side wall of the installation position of the emulsion explosive in the blast hole to enable the surface to generate a groove easy to attach; step two, a surface attaching step, namely releasing the mixed attaching matrix to the side wall of the blast hole to form an attaching substrate of the side wall, sequentially completing the forming of the circular ring and the inner circle on the bottom isolating layer, and splicing the circular ring and the inner circle on the attaching substrate of the side wall to form a barrel-shaped isolating structure; and thirdly, filling, namely releasing a small amount of emulsion explosive on the surface of the barrel-shaped structure while forming the barrel-shaped structure, so that the adhesion matrix and the emulsion explosive are mutually fused, interface mutation is avoided, and then releasing a large amount of emulsion explosive to finish filling.

Description

Preparation method and system of porous granular ammonium oil anti-water-absorption explosive Technical Field The invention relates to the technical field of emulsion explosives, in particular to a preparation method and a system of a porous granular ammonium oil water-absorbing-prevention explosive. Background The porous granular ammonium nitrate fuel oil explosive is an industrial explosive, and is prepared by simply mixing porous granular ammonium nitrate and fuel oil (such as diesel oil) according to a certain proportion. The most remarkable characteristics of the explosive are low cost, simple preparation, but poor water resistance, relatively insensitive, and reliable detonation usually requiring a powerful primer. Therefore, it is mainly suitable for blasting engineering in open air without the danger of marsh gas and dust explosion, such as mining and large-scale earthwork engineering. Meanwhile, the field mixed loading technology is used as an advanced blasting operation mode, and has the core advantages of high intrinsic safety, excellent operation efficiency and accurate and controllable blasting effect. The technology prepares an emulsified matrix without detonator sensitivity at a fixed ground station, and the emulsified matrix is sensitized again and directly pumped into a blast hole after being transported to a blasting site by a special mixed loading vehicle. The method is mainly suitable for large-scale scenes with large dosage and centralized operation, such as large-scale surface mine exploitation, underground mine stope, hydropower engineering, railway and highway cutting excavation and other large-scale civil engineering. In these environments, the technology can not only remarkably reduce transportation and storage risks, but also greatly improve efficiency through mechanized charging, optimize energy distribution by using technologies such as water hole coupling, air spacing and the like, and finally realize safe, economical and efficient rock breaking. Based on mine, in large-scale civil engineering, the adoption of the on-site mixed loading technology to load the porous granular ammonium nitrate fuel oil explosive can effectively improve the efficiency and the safety. However, in the practical use process, aiming at the water-containing blastholes, there are too many factors influencing the explosion performance of the emulsion explosive, such as the water content of the blastholes, the adhesion of the emulsion explosive, the addition of a cross-linking agent and the like, which is not beneficial to efficient filling. Disclosure of Invention The invention aims at overcoming the defects of the prior art, and aims at part of emulsion explosive mixed cross-linking agents by arranging the isolating mechanism, and the barrel-shaped structure stably attached to the side wall of a blast hole is formed by utilizing the enhanced viscosity and water resistance of the emulsion explosive after the cross-linking agents are mixed, and normal emulsion explosive is filled into the barrel-shaped structure, so that the influence of the cross-linking agents on the emulsion explosive is avoided, and meanwhile, the isolation of water and the stable attachment of the emulsion explosive are realized, thereby solving the technical problems of more influencing factors and low filling efficiency in field mixed filling. Aiming at the technical problems, the technical scheme is as follows: A porous granular ammonium oil anti-water-absorbing explosive preparation system comprising: The isolation mechanism is used for processing the emulsion explosive and then filling the emulsion explosive into the blast hole and comprises a filling pipe, a brushing assembly which is arranged at the upper end of the filling pipe and is used for coating the side wall of the blast hole, and a splicing assembly which is arranged at the lower end of the filling pipe and is used for coating the bottom layer; the upper end of the filling pipe is connected with a hose, and a diverter valve and a mixing mechanism are arranged in the filling pipe; The method comprises the steps of inputting the emulsion explosive into an isolation mechanism, enabling part of the emulsion explosive to mix with a cross-linking agent to promote viscosity to form an adhesion matrix, then utilizing a brushing assembly to uniformly attach the adhesion matrix to the side wall of a blast hole to form a layer of adhesion substrate, utilizing a splicing assembly to bond the adhesion matrix to form a bottom isolation layer, and enabling the adhesion substrate to adhere to the bottom isolation layer to form a barrel-shaped structure, so that water in the blast hole is isolated, stable adhesion of the emulsion explosive to the middle of the blast hole is realized, and meanwhile, the influence of the cross-linking agent mixed into the emulsion explosive on the explosion performance of the emulsion explosive is avoided. Preferably, the brushing assembly comprises a di