CN111707156B - Coal mine underground mining blasthole plugging mechanism - Google Patents
Coal mine underground mining blasthole plugging mechanism Download PDFInfo
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- CN111707156B CN111707156B CN202010630269.3A CN202010630269A CN111707156B CN 111707156 B CN111707156 B CN 111707156B CN 202010630269 A CN202010630269 A CN 202010630269A CN 111707156 B CN111707156 B CN 111707156B
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- main body
- body cylinder
- nail
- blasting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/18—Plugs for boreholes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a blast hole plugging mechanism for underground coal mine mining, which can improve the sealing and fixing capacity of the plugging mechanism by utilizing the impact force during blasting and avoid the plugging mechanism from being ejected during blasting to influence the blasting effect, and is characterized in that one end of a main body cylinder is connected with a fixed seat, a guide sleeve is connected with the other end of the main body cylinder, the guide sleeve is of a diameter-variable structure, a plurality of layered partition plates are sleeved on the main body cylinder, the layered partition plates are arc plates which are raised towards the direction of the guide sleeve and are arranged at equal intervals, a plurality of nail placing grooves are annularly and equidistantly arranged on the layered partition plates, a limiting block is arranged on the wall of each nail placing groove close to the main body cylinder, an anti-falling nail is arranged in each nail placing groove and is positioned above the limiting block, a water inlet hole corresponding to the nail placing groove is arranged on the main body cylinder, a cement pipe sequentially passes through the fixed seat and the layered partition plates and extends to a position close to the guide sleeve, a plurality of filling holes are formed in the cement pipe at equal intervals.
Description
Technical Field
The invention discloses a mechanism for plugging coal mine underground mining blastholes, relates to a mechanism for plugging coal mine mining blastholes, and belongs to the field of coal mine equipment. In particular to a coal mine underground mining blasthole plugging mechanism which can improve the sealing and fixing capacity of the plugging mechanism by utilizing the impact force during blasting and avoid the influence on the blasting effect caused by the ejection of the plugging mechanism during blasting.
Background
The blasthole is a hole drilled on a blasted body and is used for filling blasting explosive, conventionally, in order to ensure the blasting quality and improve the blasting effect, the blasthole can be plugged, so that blasting impact force is totally gathered in the blasthole, at present, when water stemming is used for plugging, as the stemming is in a paste structure with certain plasticity, plugging is easy and not solid, and a plugging structure consisting of the stemming is solidified, the plugging surface of the stemming can not disperse and buffer the blasting force when the plugging surface receives the impact force, so that all percent of the impact force acts on the plugging structure, the plugged stemming is easy to be ejected out of the blasthole due to the blasting impact force, and the blasting effect is influenced.
Notice No. CN210128663U discloses a big gun hole plugging device digs in pit, including spliced pole and fixed plate, the fixed plate welds in the one end of spliced pole, the spliced pole is kept away from the spring of two symmetric distributions of one end fixedly connected with of fixed plate, and the equal fixedly connected with rotor plate of the one end of two springs, the one end fixedly connected with self-tapping awl of spliced pole, and the one end of two rotor plates all rotates with the self-tapping awl through the round pin axle and is connected, the bilateral symmetry of fixed plate is provided with first slot, and the inside of two first slots all is pegged graft and is had the clamp plate, two one side at two rotor plates is pressed respectively to the one end of clamp plate, and the device can't cushion the impact force that produces when blasting, leads to the direct rigid impact of impact to cause deviating from of plugging device on plugging device.
Publication No. CN107990797A discloses a blasthole plugging device, which is characterized in that a limit plate is arranged on the outer wall of one end of a thread bushing, the limiting plate is in an annular plate-shaped structure, one side of the limiting plate is provided with a rubber pad, the fixing sleeve is arranged on one end of the threaded sleeve, the outer wall of the fixed sleeve is provided with threads, one end of the main body cylinder is of an open structure, the inner wall of one end of the main body cylinder is provided with an annular groove, the wall of the annular groove is provided with threads, and is corresponding to the thread on the outer wall of the fixed sleeve, the middle part of the other end of the main body cylinder is provided with a through hole, an expansion ring is arranged in the main body cylinder, the inner side of the expansion ring is provided with the thread, the outer side of the expansion ring is provided with a plurality of rubber bulges, the plugging stemming filled in the plugging device is of a plane structure towards the direction of the impact force, can not carry out unloading, dispersing and buffering on the blasting impact force, is easy to eject out of a blast hole by the impact force, and has poor plugging fixity.
Disclosure of Invention
In order to improve the situation, the invention provides the underground coal mine excavation blast hole plugging mechanism which can improve the sealing and fixing capacity of the plugging mechanism by utilizing the impact force during blasting and avoid the influence on the blasting effect caused by the ejection of the plugging mechanism during blasting.
The invention relates to a mechanism for plugging a coal mine underground mining blast hole, which is realized as follows: the invention relates to a blast hole plugging mechanism for underground coal mine excavation, which consists of a main body structure and a plugging structure, wherein the main body structure consists of a guide cover, a main body cylinder, an anti-drop nail, a filling hole, a layered partition plate, a limiting ring, a fixed seat, a mud inlet pipe, a limiting block and an air inlet hole, one end of the main body cylinder is connected with the fixed seat, the guide cover is connected with the other end of the main body cylinder, the guide cover is of a diameter-changing structure, a plurality of layered partition plates are sleeved on the main body cylinder, the layered partition plates are arc-shaped plates which are raised towards the direction of the guide cover and are arranged at equal intervals, a plurality of nail placing grooves are annularly and equidistantly arranged on the layered partition plates, a limiting block is arranged on the wall of the nail placing groove close to the main body cylinder, the anti-drop nail is arranged in the nail placing groove, the anti-drop nail is positioned at the outer side of the limiting block, the air inlet hole corresponding to the nail placing groove is arranged on the main body cylinder, and a cement pipe sequentially passes through the fixed seat and the plurality of the layered partition plates and extends to a position close to the guide cover, a plurality of filling holes are arranged on the cement pipe at equal intervals,
the plugging structure consists of a through hole, a piston, a fixed pipe, a spring, a sliding ring, a guide ring, a shunt boss, an inflation hole, an air bag and a storage ring groove, wherein the fixed pipe is arranged in a main body cylinder, one end of the fixed pipe is provided with the shunt boss, the guide ring is sleeved on the fixed pipe in a sliding way and is close to one end, the sliding ring is sleeved on the fixed pipe in a sliding way, the sliding ring is connected with the guide ring through a connecting rod, the spring is sleeved on the fixed pipe and is positioned between the sliding ring and the limit ring and is connected with the limit ring, the other end side face of the fixed pipe is provided with a plurality of through holes, the outer side face of the fixed pipe is equidistantly provided with a plurality of groups of storage ring grooves, the storage ring groove is internally provided with the air bag, the bottom of the storage ring groove is provided with the inflation hole which can be communicated with the fixed pipe, the inflation hole gradually decreases the inner diameter along the direction from the shunt boss to the piston, the fixed pipe is internally provided with the piston, an inflation cavity is formed between the piston and one end of the fixed pipe, the fixed pipe embeds there is expanding spring, expanding spring arranges in between the piston and the fixed pipe other end, it has a plurality of fixed orificess to open on the fixing base, the anticreep has been followed closely and has been put the screw thread.
Has the beneficial effects.
The blasting impact force can be buffered and utilized, and the sealing and fixing capacity of the plugging device is improved.
And secondly, the impact force can be used as power to push the anti-falling nail to be inserted and fixed, so that the plugging device is prevented from being ejected out.
Drawings
FIG. 1 is a schematic structural diagram of a blast hole plugging mechanism for underground coal mine excavation.
FIG. 2 is a schematic structural diagram of a layered partition plate of a blast hole plugging mechanism for underground coal mine excavation.
FIG. 3 is a schematic structural diagram of a fixing tube of a blast hole plugging mechanism for underground coal mining.
In the attached drawings
Wherein the method comprises the following steps: the guide cover 1, a main body cylinder 2, an anti-dropping nail 3, a filling hole 4, a layering partition plate 5, a limiting ring 6, a fixing seat 7, a mud inlet pipe 8, a through hole 9, a piston 10, a fixing pipe 11, a spring 12, a sliding ring 13, a guide ring 14, a shunting boss 15, a limiting block 16, an air inlet 17, an inflation hole 18, an air bag 19 and a storage ring groove 20.
The specific implementation mode is as follows:
the invention relates to a mechanism for plugging a blast hole in underground coal mine excavation, which is realized as follows: the invention relates to a blast hole plugging mechanism for underground coal mine excavation, which consists of a main body structure and a plugging structure, wherein the main body structure consists of a guide cover 1, a main body cylinder 2, an anti-drop nail 3, an injection hole 4, a layered partition plate 5, a limiting ring 6, a fixed seat 7, a mud inlet pipe 8, a limiting block 16 and an air inlet hole 17, one end of the main body cylinder 2 is connected with the fixed seat 7, the guide cover 1 is connected with the other end of the main body cylinder 2, the guide cover 1 is of a diameter-variable structure, the layered partition plates 5 are sleeved on the main body cylinder 2, the layered partition plates 5 are arc plates which are raised towards the direction of the guide cover 1 and are arranged at equal intervals, a plurality of nail placing grooves are annularly and equidistantly arranged on the layered partition plates 5, the limiting block 16 is arranged on the wall of the nail placing groove close to the main body cylinder 2, the anti-drop nail 3 is arranged in the nail placing groove, the anti-drop nail 3 is positioned outside the limiting block 16, the air inlet hole 17 corresponding to the nail placing groove is arranged on the main body cylinder 2, the cement pipe sequentially passes through the fixed seat 7 and the plurality of layered partition plates 5 and extends to a position close to the guide cover 1, a plurality of pouring holes 4 are arranged on the cement pipe at equal intervals,
the plugging structure consists of a through hole 9, a piston 10, a fixed tube 11, a spring 12, a sliding ring 13, a guide ring 14, a shunt boss 15, an inflation hole 18, an air bag 19 and a storage ring groove 20, wherein the fixed tube 11 is arranged in the main body cylinder 2, one end of the fixed tube 11 is provided with the shunt boss 15, the guide ring 14 can slide and is sleeved on the fixed tube 11 and close to one end, the sliding ring 13 can slide and is sleeved on the fixed tube 11, the sliding ring 13 and the guide ring 14 are connected through a connecting rod, the fixed tube 11 is sleeved with the spring 12, the spring 12 is positioned between the sliding ring 13 and the limiting ring 6 and is connected with the limiting ring 6, the side surface of the other end of the fixed tube 11 is provided with a plurality of through holes 9, the outer side surface of the fixed tube 11 is equidistantly provided with a plurality of storage ring grooves 20, the air bag 19 is arranged in the storage ring groove 20, the bottom of the storage ring groove 20 is provided with the inflation hole 18 which can be communicated with the fixed tube 11, and the inflation hole 18 is arranged along the direction from the shunt boss 15 to the piston 10, the inner diameter is gradually decreased, a piston 10 is arranged in a fixed pipe 11, an inflation cavity is formed between the piston 10 and one end of the fixed pipe 11, an expansion spring is arranged in the fixed pipe 11 and is arranged between the piston 10 and the other end of the fixed pipe 11, a plurality of fixing holes are formed in a fixing seat 7, a sealing ring is arranged at the edge of a guide cover 1, a thread is arranged on an anti-falling nail 3,
when the plugging device is used, the plugging mechanism is firstly plugged into a blasthole, the fixed seat 7 is abutted against the outer rock wall of the blasthole opening, then water stemming is injected through the mud inlet pipe 8, the water stemming is poured into a gap formed by the adjacent layered partition plates 5 along the pouring pipe, and filling and plugging are carried out;
when blasting is carried out, impact airflow generated by blasting is guided into the main body cylinder 2 through the guide cover 1 cup, then the impact airflow is guided in a shunting manner through the shunting boss 15, the airflow flows to the periphery in the main body cylinder 2, the guide ring 14 drives the sliding ring 13 to overcome the stress of the spring 12 under the thrust action of the airflow and slide along the fixed pipe 11 to the fixed seat 7, at the moment, the air inlet holes 17 blocked by the guide ring 14 are sequentially exposed, a part of the impact airflow can enter the air inlet holes 17, the anti-falling nails 3 in the layered partition plate 5 are pushed out to push the anti-falling nails out to insert the anti-falling nails into the surrounding rock wall, the anti-falling nails 3 are matched with the layered partition plate 5, the anti-falling fixation can be further carried out on the main body cylinder 2, and the blocking mechanism is prevented from being pushed out by the blasting airflow to influence the blasting effect;
meanwhile, in the process that the guide ring 14 drives the sliding ring 13 to slide along the fixed pipe 11, gas between the sliding ring 13 and one end of the main body cylinder 2 is compressed, the gas enters the fixed pipe 11 along the through hole 9, the piston 10 in the fixed pipe 11 can overcome the stress of the spring 12 to slide under the action of gas pressure, the gas in the inflation cavity is further compressed, the gas in the inflation cavity is inflated along the inflation hole 18 after being compressed, the gas bag 19 is expanded and filled into the main body cylinder 2, the buffering and blocking capacity of the main body cylinder 2 to the explosion impact force is improved, and the sealing and fixing capacity of the blocking mechanism is further improved;
the design that the inner diameters of different inflation holes 18 are gradually decreased along the direction from the shunting boss 15 to the piston 10 can be matched with the direction of the piston 10 for compressing gas, so that the inflation speeds of the different inflation holes 18 can be set, the inflation time difference of each air bag 19 is shortened, and the filling effect of the air bags 19 is prevented from being influenced;
the guide cover 1 is designed to be of a reducing structure, so that during blasting, on one hand, impact airflow can be conveniently guided into the main body cylinder 2, effective utilization of the impact airflow is facilitated, on the other hand, impact force generated by the impact airflow can be relieved, and the device is prevented from being ejected out of a blast hole by the impact airflow;
the fixing seat 7 is provided with a fixing hole, so that the fixing seat 7 can be fixed on the rock wall outside the opening of the blasthole by using bolts, and the plugging device is more stably fixed;
the anti-drop nail 3 is provided with threads, so that the anti-drop nail 3 can be conveniently inserted into a rock stratum and can be prevented from easily falling off under the action of blasting impact force;
the design that the sealing ring is arranged at the edge of the guide cover 1 can improve the sealing effect of the device, so that the blasting airflow is effectively guided into the fixed pipe 11 for utilization and buffering, and the direct influence of the airflow on the cement bubble position is reduced;
the anti-drop nail 3 is matched with the design of the layered partition plate 5, so that the blasting impact force can be effectively used as power, the anti-drop nail 3 is inserted into the rock, and the layered partition plate 5 is matched to further fix the main body cylinder 2, so that the blocking device is prevented from being ejected out to influence the blasting effect;
the design that the guide ring 14 and the sliding ring 13 are matched with the piston 10, and the guide ring 14 and the sliding ring 13 are matched with the piston 10 to slide, so that gas can be gradually compressed to inflate the gas bag 19, on one hand, certain buffering can be performed on impact gas flow generated during blasting, on the other hand, the gas bag 19 can be used for filling and plugging in the main body cylinder 2, the buffering and blocking capacity of the main body cylinder 2 on blasting impact force is improved, and further the integral sealing and fixing capacity of the plugging mechanism is further improved;
during blasting, the impact airflow impacts the guide ring 14 to move towards the fixed seat 7, so that the air inlet 17 is exposed, after the impact force generated by blasting airflow enters the air inlet 17, the impact force can be effectively used as power, the anti-falling nail 3 is inserted into a rock stratum, at the moment, the anti-falling nail 3 can be further fixed on the main body cylinder 2 by matching with the layered partition plate 5, the plugging device is prevented from being ejected, on the other hand, the guide ring 14 drives the sliding ring 13 to overcome the stress of the spring 12 to slide, so that the gas in the main body cylinder 2 is compressed to fill the gas bag 19, the gas bag 19 is expanded and filled into the main body cylinder 2, and the buffering and blocking capacity of the main body cylinder 2 on the blasting impact force is improved;
the aim of utilizing the impact force during blasting, improving the sealing and fixing capacity of the plugging mechanism and avoiding the influence on the blasting effect caused by ejection of the plugging mechanism during blasting is fulfilled.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention, and it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (10)
1. A coal mine underground mining blast hole plugging mechanism is characterized in that: one end of a main body cylinder is connected with a fixed seat, a guide cover is connected with the other end of the main body cylinder, a plurality of layered partition plates are sleeved on the main body cylinder, a plurality of nail placing grooves are annularly and equidistantly formed on the layered partition plates, a limiting block is arranged on the wall of each nail placing groove close to the main body cylinder, an anti-falling nail is arranged in each nail placing groove and is positioned outside the limiting block, an air inlet hole corresponding to each nail placing groove is formed in the main body cylinder, a cement pipe sequentially penetrates through the fixed seat and the layered partition plates and extends to a position close to the guide cover, a plurality of filling holes are formed in the cement pipe at equal intervals, a fixed pipe is arranged in the main body cylinder, a flow dividing boss is arranged at one end of the fixed pipe, the guide ring is slidably sleeved on the fixed pipe and is close to one end, a sliding ring is slidably sleeved on the fixed pipe, the sliding ring is connected with the guide ring through a connecting rod, a spring is sleeved on the fixed pipe and is positioned between the sliding ring and the limiting ring, and be connected with the spacing ring, it has a plurality of through-holes to open on the fixed pipe other end side, and equidistant division has the multiunit to accomodate the annular on the fixed pipe lateral surface, accomodates that the annular is built-in to have the gasbag, accomodate the annular tank bottom and open have can with the fixed intraductal inflation hole that communicates, fixed intraductal is built-in to have a piston, form between piston and the fixed pipe one end and aerify the chamber, fixed intraductal is built-in to have expanding spring, expanding spring arranges in between piston and the fixed pipe other end.
2. The mechanism of claim 1, wherein the dividing plate is an arc-shaped plate protruding toward the direction of the guiding hood and arranged at equal intervals.
3. The underground coal mine excavation blasthole plugging mechanism according to claim 1, characterized in that the inner diameters of different inflation holes are gradually decreased along the direction from the flow dividing boss to the piston, the inflation speeds of different inflation holes can be set in cooperation with the direction of compressed gas of the piston, and the inflation time difference of each air bag is shortened.
4. The mechanism of claim 1, wherein the guiding hood is of a reducing structure, so that during blasting, the impact airflow can be guided into the main body cylinder conveniently, effective utilization of the impact airflow is facilitated, impact force generated by the impact airflow can be relieved, and the device is prevented from being ejected out of the blast hole by the impact airflow.
5. The mechanism of claim 1, wherein the fixing base has a plurality of fixing holes.
6. The mechanism of claim 1, wherein the edge of the guiding shroud is provided with a sealing ring to improve the sealing effect of the device, so that the blasting air flow is effectively guided into the fixed pipe for utilization and buffering, thereby reducing the direct influence of the air flow on the cement bubble.
7. The mechanism of claim 1, wherein the anti-separation nail is provided with a thread.
8. The underground coal mine excavation blasthole plugging mechanism as claimed in claim 7, characterized in that the anti-drop nail is matched with the design of the layered partition plate, so that blasting impact force can be effectively used as power to insert the anti-drop nail into rock, and the layered partition plate is matched to further fix the main body barrel, thereby preventing the plugging device from being ejected.
9. The underground coal mine excavation blasthole plugging mechanism as claimed in claim 1, characterized in that the design of the guide ring and the sliding ring matched piston can gradually compress gas to inflate the air bag through the sliding of the guide ring and the sliding ring matched piston, so that on one hand, certain buffering can be performed on impact gas flow generated during blasting, and on the other hand, the air bag can be used for filling and plugging in the main body cylinder, so that the buffering and blocking capacity of the main body cylinder on blasting impact force is improved.
10. The mechanism of claim 9, wherein during blasting, the impact airflow impacts the guide ring to move towards the fixed seat, so that the air inlet is exposed, the impact force generated by the blasting airflow enters the air inlet, the impact force can be effectively used as power to insert the anti-drop nail into the rock formation, at the moment, the anti-drop nail is matched with the layered partition plate to further fix the main body cylinder, the plugging device is prevented from being ejected, and on the other hand, the guide ring drives the slip ring to slide against the stress of the spring, so that the gas in the main body cylinder is compressed to fill the air bag, the air bag expands and is filled into the main body cylinder, and the buffering and blocking capacity of the main body cylinder on the blasting impact force is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010630269.3A CN111707156B (en) | 2020-07-03 | 2020-07-03 | Coal mine underground mining blasthole plugging mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010630269.3A CN111707156B (en) | 2020-07-03 | 2020-07-03 | Coal mine underground mining blasthole plugging mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN111707156A CN111707156A (en) | 2020-09-25 |
| CN111707156B true CN111707156B (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010630269.3A Active CN111707156B (en) | 2020-07-03 | 2020-07-03 | Coal mine underground mining blasthole plugging mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112833723B (en) * | 2021-01-07 | 2022-05-06 | 中南大学 | Explosion anti-punching device and blast hole blocking method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743786Y (en) * | 2004-12-10 | 2005-11-30 | 姜有 | Blast hole plug |
| US20090314177A1 (en) * | 2008-06-19 | 2009-12-24 | George Laszlo | Tamping Device |
| CN106643363B (en) * | 2016-12-31 | 2018-01-02 | 中国矿业大学 | A kind of underground coal mine digging embrasure plugging device |
| CN209444303U (en) * | 2019-01-26 | 2019-09-27 | 扈胜涛 | A kind of Geology Drilling detecting devices with plugging structure |
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