CN110847965B - Efficient coal chute blockage gas-phase blasting dredging device and preparation method - Google Patents
Efficient coal chute blockage gas-phase blasting dredging device and preparation method Download PDFInfo
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- CN110847965B CN110847965B CN201911192433.0A CN201911192433A CN110847965B CN 110847965 B CN110847965 B CN 110847965B CN 201911192433 A CN201911192433 A CN 201911192433A CN 110847965 B CN110847965 B CN 110847965B
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- 239000003245 coal Substances 0.000 title claims abstract description 62
- 238000005422 blasting Methods 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009417 prefabrication Methods 0.000 claims abstract description 4
- 239000012071 phase Substances 0.000 claims description 71
- 239000007789 gas Substances 0.000 claims description 48
- 239000012634 fragment Substances 0.000 claims description 31
- 238000005553 drilling Methods 0.000 claims description 10
- 239000007792 gaseous phase Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002360 explosive Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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Abstract
The invention relates to a high-efficiency coal chute blockage gas-phase blasting dredging device which comprises a positioning keel, a spiral drill bit, a gas-phase pressure device, a positioning rack, a feeding driving mechanism and a control circuit, wherein three driving guide rails are uniformly distributed on the inner surface of the positioning rack, the feeding driving mechanism is in sliding connection with the inner surface of the positioning rack through the driving guide rails, the lower end surface of the feeding driving mechanism is connected with the upper end surface of the positioning keel through a transmission mechanism, the lower end surface of the positioning keel is connected with the spiral drill bit, the gas-phase pressure device is embedded in the positioning keel and is coaxially distributed with the positioning keel, and the control circuit is connected. The dredging method comprises three steps of equipment assembly, blasting prefabrication, blasting operation and the like. On one hand, the invention has high mechanical efficiency of construction operation, thereby greatly improving the working efficiency of dredging operation, effectively reducing the labor intensity and cost of construction operation, and on the other hand, effectively overcoming the condition of seriously harming construction safety.
Description
Technical Field
The invention relates to a high-efficiency coal chute blockage gas-phase blasting dredging device and a preparation method thereof, belonging to the technical field of gas-phase fracturing.
Background
The coal holes play a key role in the coal transportation process and are responsible for double tasks of coal sliding and temporary coal storage. The coal chute has a plurality of blocking reasons, mainly including hydrogeology, parameter selection, construction quality, daily management and the like, once the blockage occurs, the transportation system is temporarily interrupted, and the production stop of one mining area or even the whole mine is forced. Common methods for treating plugging are: 1. the manual dredging method can only aim at the condition of not serious blockage, if the blockage is serious, the manual dredging can not be effective, the safety of constructors is poor, and the labor intensity of workers is high; 2. the explosive dredging method has strict explosive management and control and long working period; the explosion generates sparks, other explosion accidents are easily caused, and the 3-air-cannon dredging method is complex in operation and poor in flexibility; 4. hydraulic pressure and water resource waste are serious, and meanwhile, the field construction environment is severe, so that the subsequent construction operation is influenced to be smoothly carried out.
In order to solve the problem, although a method for carrying out gas-phase fracturing dredging by utilizing high-pressure gas blasting is developed at present, in the construction process, positioning drill holes are often required to be firstly formed, then fracturing equipment is arranged, so that the construction difficulty is high, the construction efficiency is low, in addition, the recovery operation efficiency of the fracturing equipment after the blasting operation is finished is low, and in the drilling operation, the fracturing equipment arrangement and the recovery operation, the manual operation of isomorphic workers is required, so that the working efficiency is greatly reduced, and the labor intensity and the cost of the work are increased.
Therefore, in order to solve the problem, a brand-new coal chute dredging device and a corresponding dredging method are urgently needed to be developed so as to meet the actual use requirement.
Disclosure of Invention
The invention aims to overcome the defects and provides a high-efficiency coal chute blockage gas-phase blasting dredging device, a preparation method and a preparation process thereof.
In order to realize the purpose, the invention is realized by the following technical scheme:
a high-efficiency coal chute blockage gas-phase blasting dredging device comprises a positioning keel, a spiral drill bit, a positioning plate, a gas-phase pressure device, a positioning rack, a feeding driving mechanism and a control circuit, wherein the positioning rack is of a frame structure with an axis vertically distributed with a horizontal plane, at least three driving guide rails are uniformly distributed on the inner surface of the positioning rack around the axis of the positioning rack, the axes of the driving guide rails are distributed in parallel with the axis of the positioning rack, the feeding driving mechanism is embedded in the positioning rack and is coaxially distributed with the positioning rack and is in sliding connection with the inner surface of the positioning rack through the driving guide rails, the lower end surface of the feeding driving mechanism is connected with the upper end surface of the positioning keel through a transmission mechanism and is coaxially distributed, the positioning keel is of a cylindrical frame structure coaxially distributed with the positioning rack, the lower end surface of the positioning keel is connected with the spiral, the slide rail all with location fossil fragments axis parallel distribution, gaseous phase pressure device is at least one, inlay in the location fossil fragments and with location fossil fragments between coaxial distribution, gaseous phase pressure device passes through slide rail and the mutual sliding connection of location fossil fragments, and every slide rail all through two at least locating pins and gaseous phase pressure device interconnect, the locating plate is a plurality of, it becomes the heliciform and distributes at location fossil fragments surface to encircle the location fossil fragments axis, and each locating plate all passes through slide rail and location fossil fragments interconnect, control circuit and location frame surface connection, and respectively with feed actuating mechanism and gaseous phase pressure device electrical connection.
Furthermore, the distance between the inner surface of the positioning keel and the outer surface of the gas phase pressure device is not more than 10 mm, the inner side surface of the positioning keel and the outer surface of the gas phase pressure device are connected with each other through a plurality of elastic cushion blocks, and the total area of the contact surfaces of the elastic cushion blocks and the outer surface of the gas phase pressure device is not more than 10% of the total area of the outer surface of the gas phase pressure device.
Furthermore, the maximum diameter of the spiral drill bit is 1.1-1.5 times of the outer diameter of the positioning keel, and the length of the positioning plate is 0.8-1.5 times of the maximum diameter of the spiral drill bit.
Furthermore, the axis of the positioning plate is perpendicular to and intersected with the axis of the positioning keel, the upper end surface of the positioning plate forms an included angle of 30-90 degrees with the axis of the positioning keel, and one or two sections of the cross section and the axial section of the positioning plate are any one of a rectangle, a water drop shape, an isosceles trapezoid, an isosceles triangle and a fusiform.
Furthermore, when the number of the gas phase pressure devices is two or more, the distance between two adjacent gas phase pressure devices is not less than 5 cm, and the two adjacent gas phase pressure devices are connected with each other through the elastic cushion block.
Further, the first half of location fossil fragments lateral surface establish at least three rings in addition, rings encircle location fossil fragments axis equipartition, and every rings all draw the stranded conductor to be connected with one, and in each draws the stranded conductor, wherein at least one draws stranded conductor and location rack up end to be connected, and all the other draw the stranded conductor and all be connected with an stock, just the stock encircles the location fossil fragments axis equipartition, and effective length 1/2 imbeds in the jam coal in the swift current coal eye tunnel at least, and the stock axis intersects and be 30-60 contained angles with the location fossil fragments axis.
Furthermore, the feeding driving mechanism is any one of an electric motor, a hydraulic motor and a pneumatic motor, and the transmission mechanism is any one of a transmission shaft and a universal coupling
A coal chute dredging method based on a high-efficiency coal chute blockage gas-phase blasting dredging device is characterized by comprising the following steps:
s1, equipment assembly, namely firstly detecting the thickness of the blocked coal in the chute opening tunnel, formulating a corresponding dredging construction scheme according to a detection result, selecting the number, the fracturing pressure and the structural parameters of gas-phase pressure devices required by the construction scheme, finally determining the specific equipment structures of a positioning keel, a spiral drill bit, a positioning plate, a positioning frame and a feeding driving mechanism according to the number and the structural parameters of the gas-phase pressure devices, then assembling the positioning frame, the feeding driving mechanism and a control circuit on one hand, connecting the positioning frame with the tunnel wall of the chute opening tunnel, simultaneously enabling the feeding driving mechanism and the blocked coal in the chute opening tunnel to be coaxially distributed, and assembling the positioning keel, the spiral drill bit, the positioning plate and the gas-phase pressure devices on the other hand, and connecting and coaxially distributing the assembled positioning keel and the feeding driving mechanism;
s2, performing blasting prefabrication, after the step S1 is completed, on one hand, the feeding driving mechanism drives the positioning keel to rotate, on the other hand, the feeding driving mechanism is driven to apply axial pressure to the positioning keel through driving the guide rail to operate, so that the positioning keel is driven to drill into the blocked coal through the spiral drill bit at the front section of the positioning keel, the length of the positioning keel embedded into the blocked coal is consistent with the dredging construction scheme set in the step S1, and then the positioning keel is secondarily positioned with the positioning rack and the blocked coal respectively through the traction stranded wire and the anchor rod connected with the traction stranded wire;
s3, blasting operation, after the step S2 is completed, surrounding workers are firstly evacuated to a position at least 100 meters away from the positioning rack, then the control circuit is remotely driven to operate, the gas phase pressure device is driven by the control circuit to operate, so that the operation of blasting and dredging the blocked gas phase in the chute tunnel is realized, then after the blasting operation is completed, forced ventilation is carried out for at least 30 minutes, after combustible gas and dust in the airflow discharged from the blasting operation surface meet the construction safety requirement, the control circuit is remotely driven to operate, the positioning keel and the driving guide rail are driven by the control circuit to reversely operate according to the S2 operation direction, the positioning keel, the auger bit connected with the positioning keel, the positioning plate and the gas phase pressure device are integrally recovered from the blocked coal, and the operation of blasting and dredging the blocked coal in the chute tunnel is completed.
Further, the dredging construction scheme in the step S1 includes the following two parts:
A. the blocking thickness is larger than 3m, the drilling depth of the positioning keel is at least 2 times of the length of the gas-phase pressure device, and after the drilling operation of the positioning keel is finished, the drilled hole at the rear end face of the positioning keel is blocked by coal powder;
B. the blocking thickness is 1.5m-3m, the drilling depth of the positioning keel is 1-1.3m, the outer part of the gas-phase pressure device, which is positioned outside the drill hole, is not more than 0.15m, and the outer surface of the part of the gas-phase pressure device, which is positioned outside the drill hole, is provided with an explosion-proof protection device.
Further, in step S1, the calculation of the explosion energy of the gas phase pressure device in the dredging construction scheme is measured based on a compressed gas explosion energy calculation formula and a TNT equivalent conversion formula, and the specific calculation formula is as follows:
compressed gas explosion energy calculation formula:
Eg: energy of blast, unit J
p1: burst pressure in Pa
p2: standard atmospheric pressure in Pa
v: carbon dioxide filling amount in kg
k: adiabatic coefficient of carbon dioxide
TNT equivalent conversion formula:
QT: TNT equivalent, unit g
Eg: energy of blast, unit J
a: the conversion coefficient, namely the explosion energy of 1g of TNT explosive, takes the value of 4250.
The invention has simple structure, convenient use flexibility and good universality, on one hand, the mechanical efficiency of the construction operation is high, thereby greatly improving the working efficiency of the dredging operation, effectively reducing the labor intensity and the cost of the construction operation, on the other hand, the invention effectively overcomes the serious construction safety hazard situations of easily generating sparks, flammable and explosive gases, dust, toxic gases and the like in the construction process commonly existing in the traditional dredging equipment and dredging method, and simultaneously effectively overcomes the defects of insufficient recycling rate of the dredging equipment commonly existing in the traditional dredging equipment and dredging method, serious waste, serious water resource waste of the dredging operation and serious environment pollution phenomenon of the dredging operation site.
Drawings
FIG. 1 is a schematic structural view of the use state of the present invention when the thickness of the plugging coal is more than 3 m;
FIG. 2 is a schematic structural view of the use state of the present invention when the thickness of the plugging coal is 1.5-3 m;
FIG. 3 is a flow chart of the dredging method of the present invention.
Detailed Description
As shown in figure 1, the high-efficiency coal chute blockage gas phase blasting dredging device comprises a positioning keel 1, a spiral drill bit 2, a positioning plate 3, a gas phase pressure device 4, a positioning rack 5, a feeding driving mechanism 6 and a control circuit 7, wherein the positioning rack 5 is a frame structure with the axis and the horizontal plane vertically distributed, at least three driving guide rails 8 are uniformly distributed on the inner surface of the positioning rack around the axis of the positioning rack, the axes of the driving guide rails 8 are distributed in parallel with the axis of the positioning rack 5, the feeding driving mechanism 6 is embedded in the positioning rack 5 and is coaxially distributed with the positioning rack 5 and is in sliding connection with the inner surface of the positioning rack 5 through the driving guide rails 8, the lower end surface of the feeding driving mechanism 6 is connected with and coaxially distributed with the upper end surface of the positioning keel 1 through a transmission mechanism 9, the positioning keel 1 is a cylindrical frame structure coaxially distributed with the positioning rack 5, and the, the utility model discloses a pneumatic positioning device, including location fossil fragments 1 axis, two slide rails 10 of equal at least equipartition of location fossil fragments 1 internal surface and surface encircleing location fossil fragments 1 axis, slide rail 10 all with location fossil fragments 1 axis parallel distribution, gas phase pressure device 4 is at least one, inlay in location fossil fragments 1 and with location fossil fragments 1 within a definite time coaxial distribution, gas phase pressure device 4 passes through slide rail 10 and the mutual sliding connection of location fossil fragments 1, and every slide rail 10 all through two at least locating pins 11 and gas phase pressure device 4 interconnect, 3 a plurality of locating plates, it becomes the heliciform distribution at location fossil fragments 1 surface to encircle location fossil fragments 1 axis, and each locating plate all through slide rail 10 and location fossil fragments 1 interconnect, control circuit 7 and 5 surface connections in location frame, and respectively with feeding actuating mechanism 6.
The distance between the inner surface of the positioning keel 1 and the outer surface of the gas phase pressure device 4 is not more than 10 mm, the inner side surface of the positioning keel 1 and the outer surface of the gas phase pressure device 4 are mutually connected through a plurality of elastic cushion blocks 12, and the total area of the contact surfaces of the elastic cushion blocks 12 and the outer surface of the gas phase pressure device 4 is not more than 10% of the total area of the outer surface of the gas phase pressure device 4.
In addition, the maximum diameter of the auger bit 2 is 1.1-1.5 times of the outer diameter of the positioning keel 1, and the length of the positioning plate 3 is 0.8-1.5 times of the maximum diameter of the auger bit 2.
It is emphasized that the axis of the positioning plate 3 is perpendicular to and intersects with the axis of the positioning keel 1, the upper end surface of the positioning plate 3 forms an included angle of 30-90 degrees with the axis of the positioning keel 1, and one or two of the cross section and the axial section of the positioning plate 3 are any one of a rectangle, a drop shape, an isosceles trapezoid, an isosceles triangle and a shuttle shape.
Preferably, when two or more gas pressure devices 4 are provided, the distance between two adjacent gas pressure devices 4 is not less than 5 cm, and the two adjacent gas pressure devices 4 are connected with each other through the elastic cushion block 12.
It is worth noting that at least three hanging rings 13 are additionally arranged on the upper half part of the outer side surface of the positioning keel 1, the hanging rings 13 are uniformly distributed around the axis of the positioning keel 1, each hanging ring 13 is connected with one traction stranded wire 14, in each traction stranded wire 14, at least one traction stranded wire 14 is connected with the upper end surface of the positioning rack 5, the rest traction stranded wires 14 are connected with one anchor rod 15, the anchor rods 15 are uniformly distributed around the axis of the positioning keel 1, the effective length is at least 1/2 embedded into blocked coal 17 in the coal chute tunnel 16, and the axis of the anchor rod 15 is intersected with the axis of the positioning keel 1 and forms an included angle of 30-60 degrees.
Preferably, the feeding driving mechanism 6 is any one of an electric motor, a hydraulic motor and a pneumatic motor, and the transmission mechanism is any one of a transmission shaft and a universal coupling
As shown in fig. 2, a coal chute dredging method based on a high-efficiency coal chute blockage gas-phase blasting dredging device is characterized by comprising the following steps:
s1, equipment assembly, namely firstly detecting the thickness of the blocked coal in the chute opening tunnel, formulating a corresponding dredging construction scheme according to a detection result, selecting the number, the fracturing pressure and the structural parameters of gas-phase pressure devices required by the construction scheme, finally determining the specific equipment structures of a positioning keel, a spiral drill bit, a positioning plate, a positioning frame and a feeding driving mechanism according to the number and the structural parameters of the gas-phase pressure devices, then assembling the positioning frame, the feeding driving mechanism and a control circuit on one hand, connecting the positioning frame with the tunnel wall of the chute opening tunnel, simultaneously enabling the feeding driving mechanism and the blocked coal in the chute opening tunnel to be coaxially distributed, and assembling the positioning keel, the spiral drill bit, the positioning plate and the gas-phase pressure devices on the other hand, and connecting and coaxially distributing the assembled positioning keel and the feeding driving mechanism;
s2, performing blasting prefabrication, after the step S1 is completed, on one hand, the feeding driving mechanism drives the positioning keel to rotate, on the other hand, the feeding driving mechanism is driven to apply axial pressure to the positioning keel through driving the guide rail to operate, so that the positioning keel is driven to drill into the blocked coal through the spiral drill bit at the front section of the positioning keel, the length of the positioning keel embedded into the blocked coal is consistent with the dredging construction scheme set in the step S1, and then the positioning keel is secondarily positioned with the positioning rack and the blocked coal respectively through the traction stranded wire and the anchor rod connected with the traction stranded wire;
s3, blasting operation, after the step S2 is completed, surrounding workers are firstly evacuated to a position at least 100 meters away from the positioning rack, then the control circuit is remotely driven to operate, the gas phase pressure device is driven by the control circuit to operate, so that the operation of blasting and dredging the blocked gas phase in the chute tunnel is realized, then after the blasting operation is completed, forced ventilation is carried out for at least 30 minutes, after combustible gas and dust in the airflow discharged from the blasting operation surface meet the construction safety requirement, the control circuit is remotely driven to operate, the positioning keel and the driving guide rail are driven by the control circuit to reversely operate according to the S2 operation direction, the positioning keel, the auger bit connected with the positioning keel, the positioning plate and the gas phase pressure device are integrally recovered from the blocked coal, and the operation of blasting and dredging the blocked coal in the chute tunnel is completed.
Further optimally, the dredging construction scheme in the step S1 includes the following two parts:
A. the blocking thickness is larger than 3m, the drilling depth of the positioning keel is at least 2 times of the length of the gas-phase pressure device, and after the drilling operation of the positioning keel is finished, the drilled hole at the rear end face of the positioning keel is blocked by coal powder;
B. the blocking thickness is 1.5m-3m, the drilling depth of the positioning keel is 1-1.3m, the outer part of the gas-phase pressure device, which is positioned outside the drill hole, is not more than 0.15m, and the outer surface of the part of the gas-phase pressure device, which is positioned outside the drill hole, is provided with an explosion-proof protection device.
Further optimally, in the step S1, the calculation of the explosion energy of the gas phase pressure device in the dredging construction scheme is measured based on a compressed gas explosion energy calculation formula and a TNT equivalent conversion formula, and the specific calculation formula is as follows:
compressed gas explosion energy calculation formula:
Eg: energy of blast, unit J
p1: burst pressure in Pa
p2: standard atmospheric pressure in Pa
v: carbon dioxide filling amount in kg
k: adiabatic coefficient of carbon dioxide
TNT equivalent conversion formula:
QT: TNT equivalent, unit g
Eg: energy of blast, unit J
a: the conversion coefficient, namely the explosion energy of 1g of TNT explosive, takes the value of 4250.
The invention has simple structure, convenient use flexibility and good universality, on one hand, the mechanical efficiency of the construction operation is high, thereby greatly improving the working efficiency of the dredging operation, effectively reducing the labor intensity and the cost of the construction operation, on the other hand, the invention effectively overcomes the serious construction safety hazard situations of easily generating sparks, flammable and explosive gases, dust, toxic gases and the like in the construction process commonly existing in the traditional dredging equipment and dredging method, and simultaneously effectively overcomes the defects of insufficient recycling rate of the dredging equipment commonly existing in the traditional dredging equipment and dredging method, serious waste, serious water resource waste of the dredging operation and serious environment pollution phenomenon of the dredging operation site.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a high-efficient swift current coal eye blocks up gaseous phase blasting pull throughs which characterized in that: the high-efficiency coal chute blockage gas-phase blasting dredging device comprises a positioning keel, a spiral drill bit, a positioning plate, a gas-phase pressure device, a positioning rack, a feeding driving mechanism and a control circuit, wherein the positioning rack is of a frame structure with an axis vertically distributed with a horizontal plane, at least three driving guide rails are uniformly distributed on the inner surface of the positioning rack around the axis of the positioning rack, the axes of the driving guide rails are distributed in parallel with the axis of the positioning rack, the feeding driving mechanism is embedded in the positioning rack and is coaxially distributed with the positioning rack and is in sliding connection with the inner surface of the positioning rack through the driving guide rails, the lower end surface of the feeding driving mechanism is connected with the upper end surface of the positioning keel through a transmission mechanism and is coaxially distributed, the positioning keel is of a cylindrical frame structure coaxially distributed with the positioning rack, the lower end surface of the positioning keel is connected with the spiral drill bit and, the slide rail all with location fossil fragments axis parallel distribution, gaseous phase pressure device at least one, inlay in the location fossil fragments and with location fossil fragments coaxial distribution within a definite time, gaseous phase pressure device passes through slide rail and the mutual sliding connection of location fossil fragments, and every slide rail all through two at least locating pins and gaseous phase pressure device interconnect, the locating plate is a plurality of, encircles location fossil fragments axis one-tenth heliciform and distributes at location fossil fragments surface, and each locating plate all through slide rail and location fossil fragments interconnect, control circuit and location frame surface connection to respectively with feed actuating mechanism and gaseous phase pressure device electrical connection.
2. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: the interval between the inner surface of the positioning keel and the outer surface of the gas phase pressure device is not more than 10 mm, the inner side surface of the positioning keel and the outer surface of the gas phase pressure device are connected with each other through a plurality of elastic cushion blocks, and the total area of the contact surfaces of the elastic cushion blocks and the outer surface of the gas phase pressure device is not more than 10% of the total area of the outer surface of the gas phase pressure device.
3. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: the maximum diameter of the spiral drill bit is 1.1-1.5 times of the outer diameter of the positioning keel, and the length of the positioning plate is 0.8-1.5 times of the maximum diameter of the spiral drill bit.
4. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: the axis of the positioning plate is perpendicular to and intersected with the axis of the positioning keel, the upper end face of the positioning plate forms an included angle of 30-90 degrees with the axis of the positioning keel, and one or two sections of the cross section and the axial section of the positioning plate are any one of a rectangle, a water drop shape, an isosceles trapezoid, an isosceles triangle and a fusiform.
5. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: when the number of the gas phase pressure devices is more than two, the distance between two adjacent gas phase pressure devices is not less than 5 cm, and the two adjacent gas phase pressure devices are connected with each other through the elastic cushion block.
6. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: the utility model discloses a coal mine underground mining anchor rod, including location fossil fragments lateral surface, rings, and every rings all draws the stranded conductor to be connected with one, and in each drawing the stranded conductor, wherein at least one draws the stranded conductor and is connected with location rack up end, and all the other draw the stranded conductor and all be connected with an stock, just the stock encircles location fossil fragments axial equipartition, and effective length is 1/2 at least in the jam coal in the embedding chute hole tunnel, and the stock axis intersects and is 30-60 contained angles with the location fossil fragments axial.
7. The efficient coal chute blockage gas-phase blasting dredging device as recited in claim 1, wherein: the feeding driving mechanism is any one of an electric motor, a hydraulic motor and a pneumatic motor, and the transmission mechanism is any one of a transmission shaft and a universal coupling.
8. The method for dredging the coal chute hole of the efficient coal chute hole blockage gas-phase blasting dredging device based on the claim 1 is characterized by comprising the following steps of:
s1, equipment assembly, namely firstly detecting the thickness of the blocked coal in the chute opening tunnel, formulating a corresponding dredging construction scheme according to a detection result, selecting the number, the fracturing pressure and the structural parameters of gas-phase pressure devices required by the construction scheme, finally determining the specific equipment structures of a positioning keel, a spiral drill bit, a positioning plate, a positioning frame and a feeding driving mechanism according to the number and the structural parameters of the gas-phase pressure devices, then assembling the positioning frame, the feeding driving mechanism and a control circuit on one hand, connecting the positioning frame with the tunnel wall of the chute opening tunnel, simultaneously enabling the feeding driving mechanism and the blocked coal in the chute opening tunnel to be coaxially distributed, and assembling the positioning keel, the spiral drill bit, the positioning plate and the gas-phase pressure devices on the other hand, and connecting and coaxially distributing the assembled positioning keel and the feeding driving mechanism;
s2, performing blasting prefabrication, after the step S1 is completed, on one hand, the feeding driving mechanism drives the positioning keel to rotate, on the other hand, the feeding driving mechanism is driven to apply axial pressure to the positioning keel through driving the guide rail to operate, so that the positioning keel is driven to drill into the blocked coal through a spiral drill bit at the front section of the positioning keel, the length of the positioning keel embedded into the blocked coal is consistent with the dredging construction scheme set in the step S1, and then the positioning keel is secondarily positioned with the positioning rack and the blocked coal respectively through a traction stranded wire and an anchor rod connected with the traction stranded wire;
s3, blasting operation, after the step S2 is completed, surrounding workers are firstly evacuated to a position at least 100 meters away from the positioning rack, then the control circuit is remotely driven to operate, the gas phase pressure device is driven by the control circuit to operate, so that the operation of blasting and dredging the blocked gas phase in the coal chute tunnel is realized, then after the blasting operation is completed, forced ventilation is carried out for at least 30 minutes, after combustible gas and dust in the gas flow discharged from the blasting operation surface meet the construction safety requirement, the control circuit is remotely driven to operate, the positioning keel and the driving guide rail are driven by the control circuit to reversely operate according to the S2 operation direction, the positioning keel, the auger bit connected with the positioning keel, the positioning plate and the gas phase pressure device are integrally recovered from the blocked coal, and the operation of blasting and dredging the blocked coal in the coal chute tunnel is completed.
9. The use method of the efficient coal chute blockage gas-phase blasting dredging device as claimed in claim 8, wherein the dredging construction scheme in the step S1 comprises the following two parts:
A. the blocking thickness is larger than 3m, the drilling depth of the positioning keel is at least 2 times of the length of the gas-phase pressure device, and after the drilling operation of the positioning keel is finished, the drilled hole at the rear end face of the positioning keel is blocked by coal powder;
B. the blocking thickness is 1.5m-3m, the drilling depth of the positioning keel is 1-1.3m, the outer part of the gas-phase pressure device, which is positioned outside the drill hole, is not more than 0.15m, and the outer surface of the part of the gas-phase pressure device, which is positioned outside the drill hole, is provided with an explosion-proof protection device.
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