CN212158350U - VCR method vertical deep hole interval charging means - Google Patents
VCR method vertical deep hole interval charging means Download PDFInfo
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- CN212158350U CN212158350U CN202020431591.9U CN202020431591U CN212158350U CN 212158350 U CN212158350 U CN 212158350U CN 202020431591 U CN202020431591 U CN 202020431591U CN 212158350 U CN212158350 U CN 212158350U
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Abstract
The invention belongs to the technical field of underground metal mine downward vertical deep hole blasting, and particularly relates to a VCR method vertical deep hole spaced charging device which comprises two suspension ropes, a bearing device and a plugging ring, wherein the bottom ends of the suspension ropes are provided with the plugging ring; a plurality of bearing devices are arranged on the suspension rope at intervals, and explosives with detonating cords are arranged in the bearing devices; the bearing device is in a grid barrel shape woven by ropes. The blasting mode realized by the device saves a plurality of sand filling and repeated work of measuring the height of the sand filling and charging, and the number of times of measurement is measuredN+3 changes to only 1 time, reducing the workload toWood waste is avoided, and efficiency is improved; and the blasting effect of the mode of realizing air spaced charging blasting is better than that of the traditional blasting mode of sand filling.
Description
Technical Field
The invention belongs to the technical field of underground metal mine downward vertical deep hole blasting, and particularly relates to a VCR (videocassette recorder) method vertical deep hole spaced charging device.
Background
Along with the continuous research and popularization of large-scale high-efficiency mining technology, the VCR blasting ore breaking technology is widely applied to stopes and mining preparation projects of underground mines. The VCR method utilizes the inverted funnel blasting technology and has the characteristics of high reliability of ore (rock) caving, good safety, outstanding blasting effect and the like according to the Rivenston principle. For example, CN109870084 discloses a VCR blasting technique, in which a plurality of layers of explosives are loaded in a blasting section in layers, and each layer of explosives is separated by a particle stuffing at intervals; or the bamboo joint blasting method is that the bamboo joint is used as a support, and explosives are filled on the bamboo joint section by section; or supporting the explosive by using other supports such as a wooden stick, filling sand with a certain height above the explosive (the height of the filled sand needs to be accurately measured), and repeating the operations of wooden stick support, sand filling and sand measuring and the like. The existing process is very complicated, consumes time, materials and labor, and cannot meet the requirement of rapid blasting operation; the air space is not realized at the bamboo tube interval, the blasting effect is not as expected, the number of large blocks is large, bamboo joints are wasted, and the material selection is troublesome; frequent process cycling increases operational safety risks and can affect further application of the method and the requirements for large-scale efficient mining of mines.
Disclosure of Invention
In order to solve the technical problems, the invention provides a VCR method vertical deep hole spaced charging device, which is characterized in that a plurality of bearing devices are arranged on a suspension rope at intervals to bear explosives by a method of drooping more than two suspension ropes in a vertical deep hole, so that air spaced charging blasting is realized, the VCR method process method is optimized and innovated, and the effects of reducing material consumption, saving working hours and improving efficiency are achieved.
In order to achieve the purpose, the technical scheme of the invention is as follows: a VCR method vertical deep hole interval charging device comprises suspension ropes, a bearing device and plugging rings, wherein the two suspension ropes are arranged in parallel, and the bottom ends of the suspension ropes are provided with the plugging rings; a plurality of bearing devices are arranged on the suspension rope at intervals, and explosives with detonating cords are arranged in the bearing devices; the bearing device is in a grid barrel shape woven by ropes.
Furthermore, the suspension rope and the bearing device adopt antistatic nylon ropes, and the tensile strength requirement is more than 200 MPa.
Furthermore, the diameter of the cross section of the rope of the bearing device is 3-5mm, and the depth of the bearing device isl With the length of explosive to be loadedLThe relationship is as follows:
。
furthermore, the plugging ring is made of light wood blocks and is in a round table shape, two iron hooks are symmetrically embedded in the plugging ring, and the plugging ring is arranged at the lower end of the suspension rope through the hooks.
Further, a roller is arranged above the opening of the vertical deep hole, and the suspension rope is suspended in the vertical deep hole through the roller.
Furthermore, the grid barrel-shaped bearing device is composed of a hoop rope and a net support at the bottom, the hoop rope is formed by coiling a rope into a ring shape, and the net support is a net support bottom formed by crossing the rope.
Compared with the prior art, the invention has the following advantages:
the existing method is that the method generally adopts a mode of supporting and charging by sections and continuously sealing, namely, a plugging ring is put down, and other supports such as a wooden stick are utilized to support and fill the explosive, measure the height of the filled explosive, charge (a detonating bullet) and measure the height of a explosive package; filling sand, measuring the height of the filled sand and detonating in an online manner, so that the process is very complicated, and consumes time, materials and labor; the invention adopts a mode of loading explosives section by section and lowering the explosives section by section, namely, a plugging ring is arranged at the bottom end of a suspension rope; a plurality of bearing devices are arranged on the suspension rope at intervals, and explosives are arranged in the bearing devices; putting the suspension rope, the plugging ring, the explosive connecting wire detonating cord and the like into the vertical deep hole together, and then sealing the top to realize air spaced charging blasting; thus, a plurality of repeated work of sand filling, sand filling height measurement and charging is saved, and the times of measurement are carried outN+3 is changed into only 1 time, thus reducing workload and wood waste and improving efficiency;and the blasting effect of the mode of realizing air spaced charging blasting is better than that of the traditional blasting mode of sand filling.
The method realizes true air interval charging blasting, avoids material consumption of the bamboo tube and the wooden stick, and improves blasting effect; the roller is used for hanging various articles in the hole, the consumption of the orifice cross arm is avoided, the roller can be moved and reused, the utilization rate of equipment is improved, and the technical support is provided for the popularization and the application of the downward vertical deep hole blasting technology by the VCR method.
Drawings
FIG. 1 is a schematic view of the present invention
FIG. 2 is a schematic diagram of the cross-sectional layout of the present invention
FIG. 3 is a cross-sectional view taken along line A-A of the present invention
FIG. 4 is a cross-sectional view of the present invention taken along line B-B
FIG. 5 is a cross-sectional view of the present invention taken along line C-C
FIG. 6 is a cross-sectional view taken along line D-D of the present invention
FIG. 7 is a cross-sectional view of the invention taken along line E-E
Wherein: 1, rolling a roller; 2, hanging a rope; 3, a hoop rope; 4, supporting a net; 5, explosive; 6, plugging a ring; 7, hanging hooks; 8, a detonator; 9, a detonating cord; 10, sand bags;lthe distance between the hoop rope and the net support is;l isThe length of the explosive; h is the air separation distance;ais the hole depth;bthe total length of the sand bag;Nis the amount of explosive.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 7, the VCR vertical deep hole spaced charging device comprises suspension ropes 2, a bearing device and a plugging ring 6, wherein two suspension ropes 2 are arranged in parallel, and the plugging ring 6 is arranged at the bottom end of each suspension rope 2; a plurality of bearing devices are arranged on the suspension rope 2 at intervals, and explosives with detonating cords are arranged in the bearing devices; the bearing device is in a grid barrel shape woven by ropes.
Furthermore, the suspension rope 2 and the bearing device adopt antistatic nylon ropes, and the tensile strength requirement is more than 200 MPa.
Furthermore, the diameter of the cross section of the rope of the bearing device is 3-5mm, and the depth of the bearing device isl With the length of explosive 5 to be loadedLThe relationship is as follows:
。
furthermore, the plugging ring 6 is made of light wood blocks and is in the shape of a circular step, two iron hooks are symmetrically embedded in the circular step, and the plugging ring is arranged at the lower end of the suspension rope through the hooks.
Further, a roller 1 is arranged above the opening of the vertical deep hole, and a suspension rope 2 is suspended in the vertical deep hole through the roller 1.
Further, the grid barrel-shaped bearing device is composed of a hoop rope 3 and a net support 4 at the bottom, the hoop rope 3 is formed by winding a rope into a coil shape, and the net support 4 is a net support bottom formed by crossing the rope.
Example 1
The method comprises the following steps: a plugging ring 6 is tied firmly at the end head of the suspension rope 2 through a hook 7, and a hoop rope 3 and a net support 4 are fixed on the suspension rope 2 at intervals;
step two: winding the suspension rope 2 with the hoop rope 3 and the net support 4 fixed on the roller 1 to realize the lifting of the suspension rope 2;
step three: pushing the roller 1 wound with the suspension rope 2 to the vicinity of a downward vertical deep hole in a stope by virtue of a wheel on the roller, and simultaneously performing hole depth measurement work of the downward vertical deep hole;
step four: a hanging rope 2 hanging a plugging ring 6 (such as a plugging ring special for blasting by a VCR method disclosed in patent CN 204718513) is placed below a roller 1, a sand bag 10 filled with sand is placed on the upper part of the plugging ring 6, explosives 5 are placed at the positions of a first hoop rope 3 and a net support 4 and are connected with the explosives in a manner of clinging to the explosives by an explosive fuse, and the explosive fuse is led out of a deep hole and is connected with an initiation network;
step five: continuously lowering the suspension rope 2, placing a second explosive 5 at the position of a second hoop rope 3 and a net support 4, and so on, continuously placing the explosive 5 while lowering the suspension rope 2, wherein an explosive cord is tightly attached to the explosive and is stringed in the space between the hoop rope 3 and the net support 4 until the last explosive required by the design is lowered, and placing a sand bag 10 filled with sand on the explosive;
step six: the roller 1 is firmly fixed to prevent the wheels from sliding, the detonating cord outside the blast hole is connected according to the same sectional blasting requirement among the holes, and early warning and detonation are carried out before blasting.
Mining the gold-zinc ore of the gold-smelting factory by adopting a stage open-stope subsequent filling method, arranging a drilling chamber at the top of the chamber, drilling a downward vertical deep hole with the hole depth of 20-40m, and adopting a VCR method blasting technology. The process comprises the following steps: measuring hole depth, putting down a cement material plugging ring by using an iron wire, fixing an orifice cross arm, measuring, filling sand, measuring, hanging an explosive, measuring, hanging a bamboo tube, measuring (hanging the explosive, measuring, hanging the bamboo tube, measuring and circulating for a plurality of times), filling sand, connecting lines and detonating. The process is very complicated, consumes time, materials and labor, and cannot meet the requirement of rapid blasting operation; the bamboo tube spacing is to realize air spacing, the blasting effect is not as expected, and the large blocks are more; frequent process cycling increases operational safety risks.
Example 2
Mining the gold-factory river lead-zinc ore by a stage open-stope subsequent filling method, arranging a drilling chamber at the top of the chamber, drilling a downward vertical deep hole with the hole depth of 20-40m, the hole diameter of 165mm and the row spacing between blast holes of 3-3.5 m, and blasting by a VCR method. The process comprises the following steps: measuring hole depth, putting down a cement material plugging ring by using an iron wire, fixing an orifice cross arm, measuring, filling sand, measuring, hanging an explosive, measuring, hanging a bamboo tube, measuring (hanging the explosive, measuring, hanging the bamboo tube, measuring and circulating for a plurality of times), filling sand, connecting lines and detonating. The process is very complicated, consumes time, materials and labor, generally, the single measurement time is 2-3 minutes, the measurement needs 12-18 minutes when the high blasting is carried out for 3-4 m sections in layering, and the measurement needs 120-180 minutes when the high lateral blasting is carried out for 20-40m sections in the whole hole, so that the requirement of rapid blasting operation cannot be met; the bamboo tube spacing is to realize air spacing, the blasting effect is not as good as expected, and the large blocks are more (500 mm-1000 mm); frequent process cycling increases operational safety risks.
By the method, the real air column interval charging blasting is realized, the consumption of bamboo tubes, wood rods or interval particle materials is avoided, the blasting effect is improved, the measurement work can be saved by about 60-90 minutes, the bamboo tubes or wood rods are saved by 15-18 m or the particle interval materials are carried out by about 0.4m when the blasting hole depth is 15m through calculation; the VCR method process method is optimized and innovated, the measuring times are reduced to 1 time, and the efficiency is greatly improved; various articles in the hole are suspended by the roller 1, so that the consumption of a cross arm of the hole opening is avoided, the roller can be moved for repeated use, and the utilization rate of equipment is improved; the nylon rope is used for hanging, so that the consumption of iron wire materials is avoided, and the cost is reduced. And a technical guarantee is provided for the popularization and the application of the VCR method in the downward vertical deep hole blasting technology.
Claims (6)
1. A VCR method vertical deep hole interval charging device is characterized by comprising two suspension ropes, a bearing device and a plugging ring, wherein the two suspension ropes are arranged in parallel, and the bottom ends of the suspension ropes are provided with the plugging ring; a plurality of bearing devices are arranged on the suspension rope at intervals, and explosives with detonating cords are arranged in the bearing devices; the bearing device is in a grid barrel shape woven by ropes.
2. The vertical deep hole spaced charging device according to claim 1, wherein the suspension rope and the bearing device are antistatic nylon ropes with tensile strength of more than 200 MPa.
3. The spaced apart vertical deep hole charging device according to claim 1, wherein the diameter of the cross section of the rope of the carrier is 3-5mm, and the depth of the carrier is 3-5mmlWith the length of explosive to be loadedLThe relationship is as follows:
。
4. the vertical deep hole spaced charging device according to claim 1, wherein said blocking ring is made of light wood, and is shaped like a circular truncated cone, two iron hooks are symmetrically embedded in the blocking ring, and the blocking ring is arranged at the lower end of the suspension rope through the hooks.
5. The spaced apart charging device for vertical deep holes of VCR process as defined in claim 1, wherein a roller is provided above the opening of the vertical deep hole, and the suspension cord is suspended in the vertical deep hole by the roller.
6. A VCR vertical deep hole spaced charge as claimed in claim 1 in which the grid barrel carrier is comprised of a tension band and a bottom net support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020431591.9U CN212158350U (en) | 2020-03-30 | 2020-03-30 | VCR method vertical deep hole interval charging means |
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| CN202020431591.9U CN212158350U (en) | 2020-03-30 | 2020-03-30 | VCR method vertical deep hole interval charging means |
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