CN114593649B

CN114593649B - PE pipe blasting construction process for open-air fracture development rock stratum

Info

Publication number: CN114593649B
Application number: CN202210236000.6A
Authority: CN
Inventors: 马荣生; 刘忠国; 刘欣洋; 王挥云; 赵鑫; 侯郡; 刘煜
Original assignee: China Railway 19th Bureau Group Mining Investment Co Ltd
Current assignee: China Railway 19th Bureau Group Mining Investment Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2023-06-16
Anticipated expiration: 2042-03-11
Also published as: CN114593649A

Abstract

The invention provides an open-air fracture development rock stratum PE pipe blasting construction process, which comprises the following steps of: step 1: acquiring drilling information according to field rock stratum conditions; step 2: drilling construction is carried out according to the obtained drilling information; step 3: calculating the specific consumption of the explosive according to the drilling holes; step 4: installing a PE pipe in the drill hole, and filling explosive into the PE pipe according to the calculated specific charge of the explosive; step 5: detonating the explosive filled in the inner wall of the PE pipe in each drilling point; the method is used for solving the problems that the consumption of the explosive leaked from the cracks of the rock stratum is increased, the explosive is unevenly distributed in the cracks, and the blasting effect is affected.

Description

PE pipe blasting construction process for open-air fracture development rock stratum

Technical Field

The invention relates to the technical field of rock stratum blasting, in particular to an open-air fracture development rock stratum PE pipe blasting construction process.

Background

At present, along with the continuous perfection of surface mine deep hole drilling machines and large-scale shipment equipment, the blasting technology is continuously improved and blasting equipment is increasingly developed, and the superiority of deep hole blasting in the aspects of improving and controlling blasting quality, improving equipment efficiency and economic benefit is more and more remarkable; meanwhile, the improvement of blasting related equipment promotes the improvement of blasting process, and greatly reduces the blasting hazard influence while improving the blasting effect;

however, when the crack rock stratum is blasted, the explosive can enter cracks in the blast holes due to the cracking in the rock stratum, and the explosive in the cracks is not fully blasted due to uneven distribution in the blast holes, so that the blasting effect is affected, and the loss of the explosive is increased;

therefore, a blasting process is designed aiming at a developed fracture rock stratum, the problem of serious medicine leakage in the charging process is avoided, the specific explosive consumption is reduced, the problem of blasting cost is solved, and the blasting effect is improved.

Disclosure of Invention

The invention provides a PE (polyethylene) pipe blasting construction process for an open-air fracture developing rock stratum, which is used for solving the problems that the consumption of explosive leaked from the fracture of the rock stratum is increased, the explosive is unevenly distributed in the fracture, and the blasting effect is affected.

A PE pipe blasting construction process for an open-air fracture development rock stratum comprises the following steps:

step 1: acquiring drilling information according to field rock stratum conditions;

step 2: drilling construction is carried out according to the obtained drilling information;

step 3: calculating the specific consumption of the explosive according to the drilling holes;

step 4: installing a PE pipe in the drill hole, and filling explosive into the PE pipe according to the calculated specific charge of the explosive;

step 5: and detonating the explosive filled in the inner wall of the PE pipe in each drilling point.

Preferably, in step 1, the drilling information includes mining slope angle, hole length, borehole inclination, drilling depth, hole pitch, row pitch, and hole network parameters according to the mining section of the rock formation.

Preferably, in step 2, the drilling operation further includes discharging the hole position by using a measuring instrument, and marking the drilling depth and the hole inclination angle.

Preferably, the step 2 further comprises the step of arranging a water blocking ring around the blast hole.

Preferably, step 4 includes cutting the PE pipe, wherein the cutting size of the PE pipe is larger than the drilling depth;

sealing one end of the PE pipe after cutting;

arranging the PE pipe after sealing in the blast hole, and filling gas into the inner wall of the PE pipe after the PE pipe completely enters the blast hole until the outer wall of the PE pipe is attached to the wall of the blast hole;

and (5) charging the inner wall of the PE pipe by using the mixed loading vehicle.

Preferably, the PE pipe moving and cutting device comprises a vehicle body, wheels are arranged on two sides of the rear end of the vehicle body, hooks for arranging traction ropes are arranged on two sides of the front end of the vehicle body, roller bodies are arranged at intervals in an open mode, two ends of the roller bodies are rotatably arranged on two walls of the vehicle body, the PE pipe is used for moving between the roller bodies, one end, far away from the roller bodies, of the PE pipe is wound on the outer wall of a material roller, two ends of the material roller are arranged at the upper end of the vehicle body through a mounting frame, and the material roller is rotatably connected with the mounting frame;

fixing columns are arranged on the lower surface of the front end of the vehicle body at intervals and used for limiting the movement of the vehicle body;

the front end of the vehicle body is provided with a groove which is used for arranging a sealing device;

one end of the roller body is provided with a micro switch, and the micro switch is electrically connected with the sealing device.

Preferably, the sealing device comprises a sealing table and a sealer, wherein two ends of the sealing table are arranged in the groove, a sliding rail is arranged at one surface of the sealing table far away from the vehicle body at intervals, sliding grooves are arranged at two ends of the sealer, the sealer slides on the sliding rail through the sliding grooves, a cutter and a heating strip are arranged at one surface of the sealer close to the sealing table at intervals, the cutter is arranged close to a material roller, a cutter groove and a pressing strip are arranged at one surface of the sealing table close to the sealer at intervals, the pressing strip is matched with the heating strip to heat-seal a PE pipe, and the cutter groove is matched with the cutter to cut the PE pipe;

the sealing device is characterized in that a plug and a switch are arranged on one surface of the sealing device, far away from the sealing table, at intervals, the input end of the plug is connected with a power supply, the output end of the plug is connected with a first switch and a micro switch, the micro switch is used for starting a heating strip, and the first switch is used for starting and stopping the lifting device.

Preferably, the lifting device comprises a third motor, the third motor is electrically connected with the first switch and the second switch, the second switch is arranged at one end of the sliding rail close to the sealing table, a third rack is arranged on one surface of one sliding rail close to the sealing device, the third rack is meshed with a fourth gear, the fourth gear is rotatably arranged in the sliding chute, a driving groove is formed in the bottom of the sliding chute, the fourth gear is meshed with a third gear through the driving groove, the third gear is arranged on a driving shaft of the third motor, and the third motor is arranged on the inner wall of the sealing device;

the second switch is matched with the first switch to be used for adjusting the lifting device to ascend or descend, and the second switch is matched with the micro switch to be used for opening and closing the heating strip.

Preferably, in step 4, the PE pipe is charged by using a charging rod, a first motor is arranged at the tail end of the charging rod, an adjusting box is arranged at the driving end of the first motor, a first mounting rod and a second mounting rod are hinged to the circumferential outer wall of the adjusting box at intervals, clamping heads are arranged at one ends, far away from the adjusting box, of the first mounting rod and the second mounting rod, and the clamping heads are used for clamping the inner wall of the PE pipe;

the end of the first mounting rod, which is close to the clamping head, is also provided with a medicine injection port, the medicine outlet end of the medicine injection port is arranged towards the sealing end of the PE pipe, the explosive inlet end of the explosive injection port is connected with the explosive output end of the mixing truck through a pipeline;

the charging rod is also provided with an exhaust pipe, one end of the exhaust pipe is connected with the air compressor, and the other end of the exhaust pipe faces towards the sealing end of the PE pipe and is used for inflating the PE pipe;

the end of the second installation rod, which is close to the clamping head, is also provided with an adjustable pressing plate, and the adjustable pressing plate is used for leveling explosive discharged from the explosive injection port.

Preferably, a sliding rod is arranged at one end of the adjustable pressing plate, which is close to the second mounting rod, the sliding rod is arranged in the sleeve in a sliding manner, and one end of the sleeve, which is far away from the sliding rod, is arranged at one end of the threaded rod; the other end of the threaded rod is in threaded connection with a second mounting rod, and a spring is arranged between the adjustable pressing plate and the threaded rod;

the adjusting box is internally provided with a hinging rod, the hinging rod is used for hinging the first mounting rod and the second mounting rod, the circumferential outer wall of the hinging rod is rotationally provided with a first gear, the two first gears are respectively connected with the first mounting rod and the second mounting rod, a toothed plate is arranged between the two first gears, the two sides of the toothed plate are respectively provided with a first rack, the two first racks are respectively meshed with the two first gears, a rectangular groove is arranged in the toothed plate, one side wall of the rectangular groove is provided with a second rack, the second rack is meshed with a second gear, the second gear is connected with a driving shaft of a second motor, the second motor is arranged on the inner wall of the adjusting box, and the second motor is matched with the toothed plate and is used for adjusting the included angle between the first mounting rod and the second mounting rod;

the chuck comprises a baffle plate, the baffle plate is arranged on a first mounting rod and a second mounting rod, one end of an L rod is hinged to the middle end of the baffle plate, an opening of the L rod is arranged towards a PE pipe, a tension spring is arranged between the L rod and the baffle plate, through holes are formed in the middle ends of the first mounting rod and the second mounting rod, the through holes extend to the tail ends of the first mounting rod and the second mounting rod, two ends of the tension rope penetrate through the through holes and are arranged at the corner of the L rod, and the tension spring is matched with the tension spring to clamp or loosen the inner wall of the PE pipe.

The working principle and the beneficial effects of the invention are as follows:

determining the hole length, the hole pitch, the row spacing and the specific explosive consumption of a drilled hole according to field rock stratum conditions and engineering drawings, performing field leveling according to calculation results, discharging the position of the blasthole by using a measuring instrument, marking the depth of the drilled hole beside the position of the blasthole, adjusting the inclination angle of a drill bit, drilling by using a drilling machine, arranging a water blocking ring around the drilled hole after drilling, preventing construction rainwater from flowing backwards into the blasthole to cause hole collapse or hole blocking, cutting a PE pipe, sealing one end extending into the blasthole, inflating the PE pipe by using an air compressor after the PE pipe is arranged, filling explosive after the inflation is finished, checking the blasthole after the filling is finished, checking that the result is qualified, connecting a detonation network, detonating, and performing analysis statistics on the blasting result after detonation;

according to different surrounding rock types and crack development degrees thereof, construction parameters can be adjusted, and the application range is wide; compared with common continuous charge or uncoupled charge with more rock stratum cracks, the PE pipe charge solves the problem of drug leakage in the charge process; solves the problem that the ammonia oil explosive can not be used because the stratum ground water is rich; the generation of toxic gas in the blasting process is reduced, so that the explosive is close to a zero-oxygen balance state in the blasting process, and the harm to the environment is reduced; the blasting work is more uniform, and the blasting effect is more ideal.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

The technical scheme of the invention is further described in detail through the drawings and the embodiments.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a flow chart of a construction process according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a PE tube moving and cutting device according to an embodiment of the invention

FIG. 3 is a front view of a sealing device according to an embodiment of the present invention;

FIG. 4 is a top view of a sealing station according to an embodiment of the present invention;

FIG. 5 is a bottom view of a sealer according to an embodiment of the invention;

FIG. 6 is a schematic view of a lifting device according to an embodiment of the present invention;

FIG. 7 is a schematic view of a sliding rail according to an embodiment of the present invention;

FIG. 8 is a schematic view of a filling device according to an embodiment of the present invention;

FIG. 9 is a schematic view of an adjustable platen according to an embodiment of the present invention;

FIG. 10 is a schematic view of a toothed plate according to an embodiment of the present invention;

FIG. 11 is a schematic view of a structure of an adjusting box according to an embodiment of the present invention;

fig. 12 is a schematic view of a chuck according to an embodiment of the invention.

The device comprises a 1-car body, 2-wheels, 3-hooks, 4-mounting frames, 5-material rollers, 6-roller bodies, 7-fixed columns, 8-grooves, 9-charging rods, 10-first motors, 11-exhaust pipes, 12-first mounting rods, 13-second mounting rods, 14-chucks, 15-adjustable clamps, 16-medicine injection ports, 17-adjusting boxes, 18-threaded rods, 19-sleeves, 20-sliding rods, 21-springs, 22-hinging rods, 23-first racks, 24-toothed plates, 25-rectangular grooves, 26-second racks, 27-second gears, 28-second motors, 29-first gears, 30-through holes, 31-blocking pieces, 32-L rods, 33-tension springs, 34-micro switches, 35-sealing platforms, 36-sealing devices, 37-plugs, 38-first switches, 39-heating rods, 40-cutting knives, 41-42-sliding grooves, 43-knife grooves, 44-sliding rails, 45-third motors, 46-fourth gears, 47-third gears, 48-third driving racks, and 50-third driving gears.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

As shown in fig. 1-12, the embodiment of the invention provides a construction process for blasting a PE pipe of an open-air fracture development rock stratum, which comprises the following steps:

In step 1, the drilling information includes drilling slope angle, hole length, borehole inclination, drilling depth, hole pitch, row pitch, and hole network parameters according to the formation production section.

In step 2, the drilling operation further comprises the step of discharging the positions of the blastholes by using a measuring instrument and marking the drilling depth and the blasthole inclination angle.

Step 2 also includes disposing a water shield around the blasthole.

Cutting the PE pipe, wherein the cutting size of the PE pipe is larger than the drilling depth;

sealing one end of the PE pipe after cutting;

The working principle and beneficial effects of the above embodiment are as follows:

firstly, referring to engineering drawings and data, then, according to the site conditions and construction requirements, comprehensively considering, carrying out blasting design, according to the data such as geological report of limestone ore and the like, mainly forming ore bodies, wherein fracture structures in the ore areas of fractured rock layers are not very developed, and the fracture zones are provided with partial structure joints, cracks and a plurality of stretch fracture zones, and are formed by calcium-cemented structure breccia, so that pores develop, near-surface weathering is strong, the strength is lower, the fracture zones belong to another type of weak interlayer compared with the original rock bodies, and the final mining slope angle of the rock mass parts of the ore deposit is determined according to the stability of the ore layers (interlayers) and pit slopes;

according to the exploitation conditions of rock stratum and mine, determining hole pitch, row pitch, ultra-deep, front-row minimum resistance line, blast hole inclination angle and explosive filling length;

before drilling, leveling a drilling site by utilizing a bulldozer, optionally discharging a blast hole position by utilizing an RTK-measuring instrument, and marking the blast hole position according to the determined drilling depth and drilling inclination angle;

when drilling, the drilling machine moves to a designated position according to the actual working environment of the site, the drilling angle is adjusted to drill holes, a water blocking ring is arranged around the blast holes according to the requirements after the drilling is completed, and meanwhile, the openings of the blast holes are plugged after the bag is filled with gun residues, so that the phenomenon that the holes collapse or are plugged due to rainwater leakage or stone falling in the construction process in rainy seasons is prevented;

wet dust removal is adopted when the drilling machine drills holes, so that the construction environment is further protected, dust emission is avoided, and the blasted PE pipe is subjected to centralized treatment;

sealing and cutting the PE pipe after the drilling is finished, wherein the length of the PE pipe is larger than the depth of the drilling, so that the PE pipe is more convenient to be inflated or filled with explosive;

the PE pipe is arranged in the blast hole, and gas filling is carried out by utilizing an air compressor, so that the PE pipe bulges, and explosive filling is carried out in the PE pipe conveniently;

the PE pipe construction technology is adopted in the construction process, and the primary selection parameter, the adjustment parameter and the determination parameter are adopted, so that the blast hole utilization rate is greatly improved, the medicine leakage phenomenon in the charging process is avoided, the ore block degree after blasting is more uniform, the blasting effect is obviously improved, and the utilization rate of explosive can be greatly improved;

the explosive column can be raised better under the condition of a certain explosive loading amount, so that the work of the explosive in the blasting process is more uniform, the ore block degree can be controlled within a reasonable range, secondary crushing is reduced, powerful support is provided for relieving the labor intensity of a shovel worker, the equipment use time and the oil consumption are also reduced, and the environmental pollution is further reduced; in addition, the PE pipe isolates part of underground water in the blast holes, so that the blasting reaction is more complete and is closer to zero oxygen balance, the generation of toxic gas in the blasting process is greatly reduced, and the PE pipe has important reference significance for green mine exploitation and construction.

In one embodiment, as shown in fig. 2-7, the PE pipe moving and cutting device further comprises a PE pipe moving and cutting device, the PE pipe moving and cutting device comprises a vehicle body 1, wheels 2 are arranged on two sides of the rear end of the vehicle body 1, hooks 3 for arranging traction ropes are arranged on two sides of the front end of the vehicle body 1, roller bodies 6 are arranged at intervals in an open mode at the front end of the vehicle body 1, two ends of the roller bodies 6 are rotatably arranged on two walls of the vehicle body 1, PE pipes are used for moving between the two roller bodies 6, one end, far away from the roller bodies 6, of each PE pipe is wound on the outer wall of a material roller 5, two ends of the material roller 5 are arranged at the upper end of the vehicle body 1 through a mounting frame 4, and the material roller 5 is rotatably connected with the mounting frame 4;

fixing columns 7 are arranged on the lower surface of the front end of the vehicle body 1 at intervals, and the fixing columns 7 are used for limiting the movement of the vehicle body 1;

the front end of the vehicle body is provided with a groove 8, and the groove 8 is used for arranging a sealing device;

one end of the roller body 6 is provided with a micro switch 34, and the micro switch 34 is electrically connected with the sealing device.

Preferably, the sealing device comprises a sealing table 35 and a sealing device 36, wherein two ends of the sealing table 35 are arranged in the groove 8, a sliding rail 41 is arranged at one surface of the sealing table 35 far away from the vehicle body 1 at intervals, sliding grooves 42 are arranged at two ends of the sealing device 36, the sealing device 36 slides on the sliding rail 41 through the sliding grooves 42, a cutter 40 and a heating strip 39 are arranged at one surface of the sealing device 36 close to the sealing table 35 at intervals, the cutter 40 is arranged close to the material roller 5, a cutter groove 43 and a pressing strip 44 are arranged at one surface of the sealing table 35 close to the sealing device 36 at intervals, the pressing strip 44 is matched with the heating strip 39 to heat-seal a PE pipe, and the cutter groove 43 is matched with the cutter 40 to cut the PE pipe;

the one side that sealer 36 kept away from sealing bench 35 is provided with plug 37 and switch 38 at the interval, plug 37 input is connected with the power, and the output is connected first switch 38 and micro-gap switch 34, micro-gap switch 34 is used for starting the strip 39 that generates heat, first switch 38 is used for opening and close elevating gear.

Preferably, the lifting device comprises a third motor 45, the third motor 45 is electrically connected with the first switch 38 and the second switch 50, the second switch 50 is arranged at one end of the sliding rail 41 close to the sealing table 35, a third rack 49 is arranged on one surface of the sliding rail 41 close to the sealing device 36, the third rack 49 is meshed with a fourth gear 46, the fourth gear 46 is rotatably arranged in the sliding groove 42, a driving groove 47 is arranged at the bottom of the sliding groove 42, the fourth gear 46 is meshed with a third gear 48 through the driving groove 47, the third gear 48 is arranged on a driving shaft of the third motor 45, and the third motor 45 is arranged on the inner wall of the sealing device 36;

the second switch 50 is matched with the first switch 38 for adjusting the lifting device to ascend or descend, and the second switch 50 is matched with the micro switch 34 for opening and closing the heating strip 39.

before PE pipe filling is carried out on a blast hole, the PE pipe is inconvenient to move due to the fact that the mass of a roller of the PE pipe is relatively large, at the moment, two ends of a material roller 5 of the PE pipe are arranged on a mounting frame 4, a traction rope is dragged to pull a vehicle body to move, the PE pipe is convenient to use when the PE pipe is paved, when the vehicle body stops around the blast hole, the PE pipe wound on the material roller 5 is pulled, at the moment, a fixed column 7 is propped against the ground, the vehicle body is not easy to slide, the PE pipe is moved out from between two roller bodies 6, the PE pipe is sealed and cut at a needed cutting size through a sealing device, working efficiency when the PE pipe is cut and sealed is improved, the roller body of the PE pipe is erected on the vehicle body, and the PE pipe roller body with large mass is convenient to move;

when the PE pipe is pulled, the roller body 6 rotates to trigger the micro switch 34, at the moment, the micro switch 34 starts a heating strip 39 of the sealing device to preheat the heating strip 39, when the PE pipe moves to a required size, the first switch 38 is opened, a third motor 45 connected with the first switch 38 works, the third motor 45 drives a third gear 48 to rotate, the third gear 48 drives a fourth gear 46 to rotate in a driving groove 47 when rotating, the fourth gear 46 drives the sealer 36 to move on a sliding rail 41 when rotating, and the fourth gear 46 moves on a third rack 49;

when the third motor 45 drives the fourth gear 46 to move to the second switch 50 on the third rack 49, the heating strip 39 abuts the PE pipe on the pressing strip 44, the heating strip 39 releases heat and heat seals the PE pipe, the cutter 40 abuts the PE pipe on the cutter groove 43 and cuts the PE pipe, and the cutting position is outside the heat sealing position;

when the sealer 36 moves to the second switch 50, the second switch 50 cuts off the heating strip 39 from the power supply, the heating strip 39 stops supplying power, meanwhile, the third motor 45 reverses to drive the sealer 36 to move upwards on the sliding rail, when the sealer moves to the uppermost end of the sliding rail, the third motor 45 is closed, when the PE pipe needs to be sealed and cut again, the PE pipe is only required to be dragged to enable the roller body 6 to rotate and trigger the micro switch 34, the heating strip is automatically preheated, the preheating time is saved, the working efficiency is improved, and when the sealing device is not required to work, the connection between the plug 37 and the power supply is disconnected.

In one embodiment, as shown in fig. 8-12, in step 4, the filling device comprises a filling rod 9, the filling rod 9 is used for filling a PE pipe, a first motor 10 is arranged at the tail end of the filling rod 9, an adjusting box 17 is arranged at the driving end of the first motor 10, a first mounting rod 12 and a second mounting rod 13 are hinged to the peripheral outer wall of the adjusting box 17 at intervals, clamping heads 14 are arranged at the ends, far away from the adjusting box 17, of the first mounting rod 12 and the second mounting rod 13, and the clamping heads 14 are used for clamping the inner wall of the PE pipe;

the first mounting rod 12 is provided with a medicine injection port 16 near one end of the clamping head 14, a medicine outlet end of the medicine injection port 16 faces to a sealing end of the PE pipe, and a medicine inlet end of the medicine injection port 16 is connected with an explosive output end of the mixing and loading vehicle through a pipeline;

the charging rod 9 is also provided with an exhaust pipe 11, one end of the exhaust pipe 11 is connected with an air compressor, and the other end of the exhaust pipe is arranged towards the sealing end of the PE pipe and is used for inflating the PE pipe;

the end of the second mounting rod 13, which is close to the clamping head 14, is also provided with an adjustable pressing plate 15, and the adjustable pressing plate 15 is used for leveling explosive discharged from the explosive injection port 16.

Preferably, a sliding rod 20 is arranged at one end of the adjustable pressing plate 15 close to the second mounting rod 13, the sliding rod 20 is slidably arranged in a sleeve 19, and one end of the sleeve 19 far away from the sliding rod 20 is arranged at one end of the threaded rod 18; the other end of the threaded rod 18 is in threaded connection with the second mounting rod 13, and a spring 21 is arranged between the adjustable pressing plate 15 and the threaded rod 18;

a hinge rod 22 is arranged in the adjusting box 17, the hinge rod 22 is used for hinging the first mounting rod 12 and the second mounting rod 13, a first gear 29 is rotatably arranged on the peripheral outer wall of the hinge rod 22, the two first gears 29 are respectively connected with the first mounting rod 12 and the second mounting rod 13, a toothed plate 24 is arranged between the two first gears 29, first racks 23 are respectively meshed with the two first gears 29 on two sides of the toothed plate 24, a rectangular groove 25 is arranged in the toothed plate 24, a second rack 26 is arranged on one side wall of the rectangular groove 25, a second gear 27 is meshed with the second rack 26, the second gear 27 is connected with a driving shaft of a second motor 28, the second motor 28 is arranged on the inner wall of the adjusting box 17, and the second motor 28 is matched with the toothed plate 24 and is used for adjusting an included angle between the first mounting rod 12 and the second mounting rod 13;

the clamping head 14 comprises a baffle 31, the baffle 31 is arranged on a first mounting rod 12 and a second mounting rod 13, one end of an L rod 32 is hinged to the middle end of the baffle 31, an opening of the L rod 32 is arranged towards a PE pipe, a tension spring 33 is arranged between the L rod 32 and the baffle 31, through holes 30 are formed in the middle ends of the first mounting rod 12 and the second mounting rod 13, the through holes 30 extend to the tail ends of the first mounting rod 12 and the second mounting rod 13, two ends of a pull rope 51 penetrate through the through holes 30 and are arranged at corners of the L rod 32, and the pull rope 51 is matched with the tension spring 33 to clamp or loosen the inner wall of the PE pipe of the clamping head 14.

Preferably, the air compressor is arranged in the vehicle body 1, and the output end of the air compressor is connected with the exhaust pipe 11 and is used for filling gas into the inner wall of the PE pipe.

after the PE tube is heat sealed and cut, one end of the charge rod 9 with the first motor 10 stretches into the PE tube, the inner wall of the PE tube is clamped by utilizing the clamping head 14, when the PE tube is clamped, the included angle between the first mounting rod 12 and the second mounting rod 13 is reduced, the stay cord 51 is loosened, the L rod 32 is acted by the tension spring 33 to be close to the baffle 31, the tail end of the L rod and the tail end of the baffle clamp the inner wall of one end of the PE tube seal, at the moment, the included angle between the first mounting rod 12 and the second mounting rod 13 is reduced, the effect of clamping the inner wall of the PE tube is achieved, when the charge rod 9 moves in the blast hole, if one end of the PE tube close to the blast hole is damaged when the PE tube enters the blast hole, the PE tube is conveniently pulled out of the blast hole by virtue of the clamping head when the PE tube is required to be refilled, and meanwhile, the PE tube can be completely pulled out of the blast hole when the PE tube moves excessively to exceed a preset stretching amount, the PE tube entering depth is prevented from exceeding budget, the filling amount is increased, and when the PE tube is conveyed into the blast hole, the included angle between the first mounting rod 12 and the inner wall of the second mounting rod 13 is reduced;

when the diameter of the blast hole is smaller, the first motor 10 is started, the first motor drives the adjusting box 17 to rotate, the adjusting box drives the first mounting rod 12 and the second mounting rod 13 to rotate, at the moment, the clamping head 14 which clamps the inner wall of the PE pipe can drive the tail end of the PE pipe to rotate until the PE pipe is wound on the circumferential outer wall of the charging rod 9, at the moment, the PE pipe is attached to the charging rod 9, the first motor 10 is closed, then the charging rod 9 is moved into the blast hole, the gear of the PE pipe when being filled into the blast hole is further reduced, the PE pipe is prevented from being scratched to the PE pipe when being filled with the inner wall of a rock body, meanwhile, the PE pipe is more convenient to move in a hole, and the first motor 10 is started to reversely rotate after the PE pipe is completely stretched into the blast hole, so that the PE pipe is straightened;

according to the adjustable pressing plate 15 for adjusting the unit consumption of blasting, after the PE pipe is completely stretched into a blast hole, the first mounting rod 12 and the second mounting rod 13 are opened, at the moment, the corner end of the L rod 32 is closed towards the first mounting rod 12 and the second mounting rod 13 by the pull rope 51, the buckle formed by the baffle piece 31 and the L rod 32 is opened, the purpose of loosening the PE pipe is achieved, the included angle between the first mounting rod 12 and the second mounting rod 13 when the PE pipe stretches into the blast hole is small, the condition that the first mounting rod 12, the second mounting rod 13 and the inner wall of the blast hole are scratched when the PE pipe stretches into the blast hole is reduced, and the size of the charging rod 9 is further reduced;

when the clamping openings of the first mounting rod 12 and the second mounting rod 13 are opened, the clamping head 14 is used for loosening the inner wall of the PE pipe, the air compressor is opened to charge the PE pipe through the exhaust pipe 11, the purpose of swelling the PE pipe is achieved, when the air compressor starts to work, the first motor 10 is opened, the rotating speed of the first motor is regulated, the first mounting rod 12 and the second mounting rod 13 are enabled to slowly rotate around the charge rod 9 with the charge opening 16 and the adjustable pressing plate 15, meanwhile, the charge rod 9 is slowly moved to the outside of a blast hole, the charge opening 16 is opened, the explosive is continuously supplied to the charge opening 16 by the mixed loading vehicle, the explosive is discharged into the PE pipe from the charge opening 16, the adjustable pressing plate 15 levels the explosive discharged from the charge opening 16, the purpose of regulating the filling density of the explosive is achieved, the whole charge rod 9 can be provided with a graduated scale, the distance of the movement of the charge rod 9 to the outside of the blast hole during charging is the depth of the explosive charge, the purpose of clearly observing the explosive loading is achieved, and the explosive loading pipeline of the mixed loading vehicle is prevented from being short, and the explosive loading pipeline is greatly caused to cause the explosion with the inner wall of the blast hole during the explosive loading;

when the height of the adjustable pressing plate 15 needs to be adjusted so as to change the distance between the adjustable pressing plate 15 and the explosive injection port 16 for discharging the explosive, the threaded rod 18 is screwed, so that the length of the threaded rod 18 extending out of the second mounting rod 13 is changed, namely the aim of adjusting the distance between the adjustable pressing plate 15 and the second mounting rod 13 is fulfilled, and the spring 21 can play a role of buffering when the explosive discharged from the explosive injection port 16 is leveled;

when the included angle between the first mounting rod 12 and the second mounting rod 13 needs to be adjusted, the second motor 28 is started, the second gear 27 is driven to rotate when the second motor 28 rotates, the second rack 26 is driven to move when the second gear 27 rotates, the second rack 26 moves upwards when the second motor rotates clockwise as shown in the figure, the toothed plate 24 is driven to move upwards, the first rack 23 moves upwards and acts on the first gears 29 on two sides when the toothed plate 24 moves upwards, the first gear 29 on the left rotates anticlockwise, the first gear on the right rotates clockwise, the first mounting rod 12 and the second mounting rod 13 are driven to swing to two sides when the first gear 29 rotates, the included angle between the first mounting rod 12 and the second mounting rod 13 is increased, and the chuck 14 is opened; conversely, when the second motor rotates anticlockwise, the included angle between the first mounting rod 12 and the second mounting rod 13 is reduced, the clamping head 14 is closed, the purposes of opening or closing the first mounting rod 12 and the second mounting rod 13 can be achieved by controlling the steering of the second motor, meanwhile, the purposes of opening and closing the clamping head are achieved, when the charging rod completely enters the blast hole, the second motor is opened to open the first mounting rod 12 and the second mounting rod 13, the clamping head is opened, the tail end of the PE pipe falls off from the clamping head, after the PE pipe is inflated by the air compressor until the PE pipe bulges, the air compressor is closed, the medicine injection port is opened, the first motor starts to rotate slowly to inject medicine into the PE pipe, and the adjustable pressing plate levels the explosive discharged from the medicine injection port, so that the working efficiency of charging the blast hole is further improved;

meanwhile, the exhaust pipe 11 is inflated from the tail end of the PE pipe, so that one end of the PE pipe extending into the bottom of the blast hole bulges from bottom to top, compared with the top-down inflation, the condition that the middle end of the PE pipe is damaged or knotted can be avoided, the tail end of the blast hole is inconvenient to observe, the PE pipe at the blast hole bulges completely after the inflation is gradually increased by utilizing the bottom-to-top inflation method, and if the end of the PE pipe, which is close to the blast hole, is not bulged at the time of normal inflation, the condition that the middle end of the PE pipe is damaged and knotted is illustrated, so that workers can observe the inflation condition of the PE pipe conveniently; the bottom-up explosive injection method can avoid the large height drop during explosive filling, influence the filling quality and avoid safety accidents during filling;

the air compressor is arranged in the vehicle body, so that the air compressor can be conveniently moved simultaneously when the material roller of the PE pipe is moved, and the working efficiency is improved.

In one embodiment, the outer circumferential wall of the charge rod 9 is provided with an insulating protective film, and the charge rod 9 is electrically connected with a static eliminator.

The working principle and the beneficial effects of the embodiment are as follows:

when the mixed loading vehicle is used for loading the PE pipe inner wall, the static eliminator of the loading rod 9 is started, static generated in the loading rod can be led out by the static eliminator, the loading rod wrapped by the insulating protective film can reduce conductivity of metal materials to the explosive, the static eliminator can further improve the safety during loading, and the condition that the explosive knocks or explodes due to instant high-voltage static of static is reduced.

In one embodiment, the charge rod 9 is further provided with a humidity sensor for detecting humidity in the blast hole, if the blast hole is dry, porous granular amine explosive or powdery finished explosive is adopted, and if the blast hole is wet, rock emulsion explosive is adopted.

before PE pipe installation, utilize charge pole 9 to stretch into the big gun hole in, open the humidity transducer that charge pole 9 terminal set up, detect big gun hole internal humidity, after humidity transducer obtains stable numerical value, take out charge pole 9 from big gun hole in, utilize charge pole 9 to install PE pipe in big gun hole, according to the information that humidity transducer detected before filling explosive, if big gun hole is dry then pack porous granular amine explosive or powdered finished explosive in PE pipe, if big gun hole is moist then select rock emulsion explosive to pack, improve the validity of construction.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The PE pipe blasting construction process for the open-air fracture development rock stratum is characterized by comprising the following steps of:

step 5: detonating the explosive filled in the inner wall of the PE pipe in each drilling point;

in the step 1, drilling information comprises mining slope angles, gun hole inclination angles, drilling depths, hole distances and row distances according to rock stratum mining sections;

sealing one end of the PE pipe after cutting;

charging the inner wall of the PE pipe by using a mixing truck;

in step 4, the PE pipe is charged by using a charging rod (9), a first motor (10) is arranged at the tail end of the charging rod (9), an adjusting box (17) is arranged at the driving end of the first motor (10), a first mounting rod (12) and a second mounting rod (13) are hinged to the peripheral outer wall of the adjusting box (17) at intervals, clamping heads (14) are arranged at one ends, far away from the adjusting box (17), of the first mounting rod (12) and the second mounting rod (13), and the clamping heads (14) are used for clamping the inner wall of the PE pipe;

the explosive injection device is characterized in that one end of the first mounting rod (12) close to the clamping head (14) is also provided with an explosive injection port (16), the explosive outlet end of the explosive injection port (16) is arranged towards the sealing end of the PE pipe, and the explosive inlet end of the explosive injection port (16) is connected with the explosive output end of the mixing and loading truck through a pipeline;

the charging rod (9) is further provided with an exhaust pipe (11), one end of the exhaust pipe (11) is connected with the air compressor, and the other end of the exhaust pipe faces towards the sealing end of the PE pipe and is used for inflating the PE pipe;

an adjustable pressing plate (15) is further arranged at one end, close to the clamping head (14), of the second mounting rod (13), and the adjustable pressing plate (15) is used for leveling explosive discharged from the explosive injection port (16);

one end of the adjustable pressing plate (15) close to the second mounting rod (13) is provided with a sliding rod (20), the sliding rod (20) is arranged in the sleeve (19) in a sliding mode, and one end, far away from the sliding rod (20), of the sleeve (19) is arranged at one end of the threaded rod (18); the other end of the threaded rod (18) is in threaded connection with a second mounting rod (13), and a spring (21) is arranged between the adjustable pressing plate (15) and the threaded rod (18);

two hinging rods (22) are arranged in the adjusting box (17), the two hinging rods (22) are used for hinging the first mounting rods (12) and the second mounting rods (13), a first gear (29) is arranged on one circumferential outer wall of each hinging rod (22) in a rotating mode, the two first gears (29) are respectively connected with the first mounting rods (12) and the second mounting rods (13), a toothed plate (24) is arranged between the two first gears (29), first racks (23) are arranged on two sides of the toothed plate (24), the two first racks (23) are respectively meshed with the two first gears (29), a rectangular groove (25) is formed in the toothed plate (24), a second rack (26) is arranged on one side wall of the rectangular groove (25), the second rack (26) is meshed with a second gear (27), the second gear (27) is connected with a driving shaft of a second motor (28), the second motor (28) is arranged on the inner wall of the adjusting box (17), and an included angle between the second motor (28) and the second rack (24) and the second mounting rods (13) are arranged;

chuck (14) are including separation blade (31), separation blade (31) set up on first installation pole (12) and second installation pole (13), the well end of separation blade (31) articulates there is the one end of L pole (32), the opening of L pole (32) sets up towards PE pipe, be provided with extension spring (33) between L pole (32) and separation blade (31), all be provided with through-hole (30) in first installation pole (12) and second installation pole (13), through-hole (30) extend to the end of first installation pole (12) and second installation pole (13), both ends of stay cord (51) run through two through-hole (30) and set up in two the corner of L pole (32), stay cord (51) cooperation extension spring (33) are used for chuck (14) to press from both sides tight or loosen PE pipe inner wall.

2. The process for blasting construction of an open-air fracture development rock layer PE pipe according to claim 1, wherein in the step 2, the drilling construction further comprises the steps of discharging the blast hole position by using a measuring instrument and marking the drilling depth and the blast hole inclination angle.

3. The process for blasting construction of an open-air fracture development rock layer PE tube according to claim 1, wherein the step 2 further comprises the step of arranging a water blocking ring around the blast hole.

4. The open-air crack development rock stratum PE pipe blasting construction process is characterized by further comprising a PE pipe moving and cutting device, wherein the moving and cutting device comprises a car body (1), wheels (2) are arranged on two sides of the rear end of the car body (1), hooks (3) used for arranging traction ropes are arranged on two sides of the front end of the car body (1), two roller bodies (6) are arranged at intervals in an open mode, two ends of each roller body (6) are rotatably arranged on two walls of the car body (1), a PE pipe is used for moving between the two roller bodies (6), one end, far away from each roller body (6), of each PE pipe is wound on the outer wall of a material roller (5), two ends of each material roller (5) are arranged at the upper end of the car body (1) through a mounting frame (4), and the material roller (5) is rotatably connected with the mounting frame (4).

The lower surface of the front end of the vehicle body (1) is provided with fixed columns (7) at intervals, and the fixed columns (7) are used for limiting the movement of the vehicle body (1);

the front end of the vehicle body is provided with a groove (8), and the groove (8) is used for arranging a sealing device;

one end of the roller body (6) is provided with a micro switch (34), and the micro switch (34) is electrically connected with the sealing device.

5. The open-air fissure development rock stratum PE pipe blasting construction process according to claim 4, wherein the sealing device comprises a sealing table (35) and a sealing device (36), two ends of the sealing table (35) are arranged in the groove (8), a sliding rail (41) is arranged on one surface of the sealing table (35) far away from a car body (1) at intervals, sliding grooves (42) are arranged on two ends of the sealing device (36), the sealing device (36) slides on the sliding rail (41) through the sliding grooves (42), a cutter (40) and a heating strip (39) are arranged on one surface of the sealing device (36) close to the sealing table (35) at intervals, a cutter groove (43) and a pressing strip (44) are arranged on one surface of the sealing table (35) close to the sealing device (36) at intervals, the cutter groove (43) is matched with the heating strip (39) to heat-seal a PE pipe, and the cutter groove (43) is matched with the cutter (40) to cut the PE pipe;

one surface of the sealer (36) far away from the sealing table (35) is provided with a plug (37) and a first switch (38) at intervals, the input end of the plug (37) is connected with a power supply, the output end of the plug is connected with the first switch (38) and a micro switch (34), the micro switch (34) is used for starting a heating strip (39), and the first switch (38) is used for starting and stopping the lifting device.

6. The open-air fracture development rock layer PE pipe blasting construction process according to claim 5, wherein the lifting device comprises a third motor (45), the third motor (45) is electrically connected with the first switch (38) and the second switch (50), the second switch (50) is arranged at one end of a sliding rail (41) close to a sealing table (35), a third rack (49) is arranged on one surface of the sliding rail (41) close to the sealing device (36), the third rack (49) is meshed with a fourth gear (46), the fourth gear (46) is rotatably arranged in a sliding groove (42), a driving groove (47) is arranged at the bottom of the sliding groove (42), the fourth gear (46) is meshed with a third gear (48) through the driving groove (47), the third gear (48) is arranged on a driving shaft of the third motor (45), and the third motor (45) is arranged on the inner wall of the sealing device (36);

the second switch (50) is matched with the first switch (38) to adjust the lifting device to ascend or descend, and the second switch (50) is matched with the micro switch (34) to open and close the heating strip (39).