CN203702234U - Stress-releasing permeability increasing device in soft coal development area - Google Patents
Stress-releasing permeability increasing device in soft coal development area Download PDFInfo
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- CN203702234U CN203702234U CN201420036516.7U CN201420036516U CN203702234U CN 203702234 U CN203702234 U CN 203702234U CN 201420036516 U CN201420036516 U CN 201420036516U CN 203702234 U CN203702234 U CN 203702234U
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Abstract
A stress-releasing permeability increasing device in a soft coal development area comprises a hollow drill rod (14). A conical drill bit (36) is arranged at the front end of the drill rod (14). A turning system and a hole making system are arranged in the drill rod (14). A high pressure water supply system is connected to the middle portion of the rear end of the drill rod (14). The turning system and the hole making system are located in the drill rod (14) and connected to corresponding joints of the drill bit (36) respectively. The rear end of the turning system and the rear end of the hole making system are both connected with the high pressure water supply system. The stress-releasing permeability increasing device is reasonable in design, safe, reliable and capable of conducting hole making and powder washing operation, making stress of a coal seam be effectively released, and promoting quick production of gas.
Description
Technical field
The utility model belongs to Safety of Coal Mine Production technical field, relates in particular to a kind of anti-reflection device of stress release that is directed to specially cherry coal development area.
Background technology
Coal is in Chinese national economy construction, and very important status is occupied in energy demand aspect.Along with the increase of country to coal demand, the coal mining degree of depth and mining rate are also increasing year by year.Along with the increase of the coal mining degree of depth and mining rate, gas bearing capacity, gas pressure are also increasing gradually, have increased the possibility of coal and Gas Outburst.Coal and Gas Outburst are one of important geological disasters of restriction Safety of Coal Mine Production.At present, the method for improvement gas mainly contains ground drilling gas pumping and down-hole drilling gas pumping.Ground drilling gas pumping is mainly to carry out gas pumping after improving reservoir permeability by drilling well, pressure break, but due to the restriction of technology at present, be difficult to realize good reservoir reconstruction effect for cherry coal development area, cause cherry coal development area coalbed methane ground extraction effect poor, be difficult to reduce fast and effectively reservoir gas bearing capacity.The method that adopts underground gas extraction, in cherry coal development area, coal body is soft, causes the easy collapse hole of drilling process, and pore-forming difficulty is large, and boring cost increases; Coal seam is destroyed serious, and permeability is poor, causes drainage holes extraction effective range limited, and drilling hole amount increases virtually, the increase corresponding to the extraction time of drilling construction expense.
The infiltrative size of coal seam reservoirs has determined gas pumping effect to a great extent.The common method that coal seam reservoirs is anti-reflection has that physics presses off the anti-reflection method in crack, chemical reaction is anti-reflection method and the anti-reflection method of stress release.For cherry coal development area, because the intensity of coal petrography own is low, adopt physical method almost cannot in coal seam, build the crack making new advances, reservoir reconstruction poor effect.Adopt the anti-reflection method of chemical reaction generally need combine with physical method, due to the crack agensis of cherry coal reservoir own, chemical anti-reflection method poor effect.Therefore, stress release is anti-reflection becomes at present to the effective method in cherry coal development area.But hypotonic, the low-intensity characteristic of cherry coal development area coal seam reservoirs, adopt existing bore process or additive method to carry out stress release effect not ideal if determined.Therefore in the urgent need to a kind of device or technique, can carry out stress release to cherry coal development area, improve the flow conductivity of coal seam reservoirs by stress release, promote the quick output of methane, effectively reduce coal seam gas-bearing capacity, realize the safe and efficient production in colliery.
Utility model content
The utility model is for the problem such as solve cherry coal development area gas pumping process Completion of Drilling Hole difficulty in prior art, influence basin is limited, extracting result is poor, provide a kind of cherry coal development area stress release anti-reflection device, can make cave to cherry coal development area, rush powder by this device and technique, realize coal seam and unload stress, promote the quick output of gas, reduce coal seam gas-bearing capacity, realize the safe and efficient production in colliery and effective utilization of gas resources.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the anti-reflection device of cherry coal development area stress release, comprise the drilling rod 14 of hollow structure, drilling rod 14 front ends are provided with conical drill bit 36, in drilling rod 14, be provided with steering and make cave system, the middle part, rear end of drilling rod 14 is connected with water under high pressure feed system, steering and make the corresponding junction that cave system is positioned at the top of drilling rod 14 and is connected respectively to drill bit 36, steering is all connected with water under high pressure feed system with the rear end of making cave system.
Described water under high pressure feed system comprises water tank 22, high-pressure hydraulic pump 2 and large discharge capacity water pump 23, high-pressure hydraulic pump 2 is connected with water tank 22 by high-pressure water pipe 1 respectively with large discharge capacity water pump 23, the delivery port of high-pressure hydraulic pump 2 is connected with steering and the water inlet of making cave system respectively, and the large delivery port of discharge capacity water pump 23 and middle part, the rear end of drilling rod 14 are connected.
Described steering comprise be located in drilling rod 14 and along drilling rod 14 axial direction settings turn to jet pipe 12 and be located at drill bit 36 tops turn to jet orifice 18, turn to the front end of jet pipe 12 to be connected with turning to jet orifice 18 by the first tube connector 8.
Described make cave system comprise make cave jet pipe 13, isocon 21 and be located at drill bit 36 tops make cave jet orifice 34, making cave jet pipe 13 is connected with isocon 21 by the second tube connector 20, making cave jet orifice 34 is connected with the delivery port of isocon 21, make cave jet orifice 34 and be provided with at least two, make cave jet orifice 34 and be the slotted hole structure of circular arc.
On described drilling rod 14 nose circle side faces, be evenly provided with a circle and close on the hole enlargement piece 16 of drill bit 36.
The central axis of described drill bit 36 is provided with and the inner intake tunnel 33 being connected of drilling rod 14, and drill bit 36 front ends are provided with the inlet opening 35 being connected with intake tunnel 33, and the pre-small post-large trochoidal surface outside drill bit 36 is provided with diamond drilling tooth 19.
Described drilling rod 14 rear ends are provided with the interior black box 6 and the exterior seal assembly 7 that are connected with water under high pressure feed system, and between interior black box 6 and exterior seal assembly 7, bending the cooperation that intersects are provided with ring packing rubber pad between interior black box 6 and exterior seal assembly 7.
Adopt technique scheme, the utility model also comprises orientation system, and orientation system is located at the bottom in drilling rod 14.
Described orientation system comprises fixed mount 32, positioner 31, indicator lamp 24 and socket 25, fixed mount 32 is located at the bottom in drilling rod 14, positioner 31 is located on fixed mount 32, socket 25 is located at the rearward end of drilling rod 14, socket 25 is connected with positioner 31 by the first wire 30, and indicator lamp 24 is plugged on socket 25;
Described positioner 31 comprises horizontally disposed cylinder 40, in cylinder 40, be provided with the container 38 of roly-poly type, in container 38, be loaded with pitch body 39, between the bottom of pitch body 39 and container 38, there is cavity, top in cylinder 40 is provided with electric conductor 42, the bottom in cylinder 40 outsides is provided with lower electric conductor 37, upper electric conductor 42 and lower electric conductor 37 are vertically gone up corresponding, container 38 bottoms are provided with the linear resistance wire 15 being connected with lower electric conductor 37, on resistance wire 15, be equipped with the conducting sphere 10 that can slide along resistance wire 15, the top of container 38 is provided with the interior electric conductor 41 that can be connected with upper electric conductor 42, between conducting sphere 10 and interior electric conductor 41, connect by the second wire 3.
Dynamical system of the present utility model is mainly to provide needed power in rod boring process, creeps into identically with conventional drilling tool, does not repeat them here.For making the needed power in cave, be, by high-pressure hydraulic pump, water pressurization is acted on to rib with the form of high speed, high-pressure water jet later, rib is washed away, destroyed, and then make cave.Discharging needed power for creeping into, make coal dust in the process of cave, is mainly by large discharge capacity water pump, and large water gaging is injected from drilling rod is inner, is sprayed coal dust is discharged along the passage between drilling rod and hole wall by drill bit.
The utility model needs to have multistage support hole system in operation process, and this system is mainly used for boring effectively to support, and avoids collapse hole.In drilling process, destroy seriously when meeting coal body, while there is continuously collapse hole phenomenon, can adopt this system effectively to support rib, avoid further destruction.Wherein this system can, for the anti-collapse hole of part, also can all be used this system to carry out anti-collapse hole operation by whole eyelet.
Orientation system is mainly that the orientation to turning to jet orifice and making cave jet orifice is determined, avoids blindly making cave, guarantees to turn to and make orientation, cave to meet design requirement.
The design of this orientation system take full advantage of tumbler not fall principle.Position and conducting sphere by appropriate design roly-poly type container move up and down along resistance wire, and while making to turn to jet orifice and drill rod axis line to be horizontal, whole circuit forms loop, and indicator lamp is bright.And container is in the time of upright position, and indicator lamp is the brightest.When container during in handstand position because resistance wire is connected into circuit, cause circuitous resistance to increase, indicator lamp brightness is darker.Therefore can be according to the switch of indicator lamp and bright dark, the position that judgement turns to jet orifice and makes cave jet orifice.
Positioner is fixed in the bottom in drilling rod by fixed mount, draw two the first wires is connected to socket from fixed mount inside, wherein socket is fixed on the end face of drilling rod rearmost end, by indicator lamp is inserted to socket, can whether open with bright degree and position judgement according to indicator lamp.Wherein the shell of positioner is the cylinder of the hollow-core construction made of a glass fiber reinforced plastic, and wherein the axis of this cylinder and the axis of drilling rod are parallel.In the top of this cylinder with distribute and fixed electric conductor and lower electric conductor bottom, upper electric conductor is connected with the first wire with lower electric conductor simultaneously, container in the inside of cylinder is to be that hollow semicolumn, top are that triangle body combines by bottom, container can only swing at left and right directions, at fore-and-aft direction because the restriction that is subject to fixed mount can not swing.Be fixed with the fixed pitch body for solid shape in the bottom of container, its medium pitch body is the bottom of complete cartridge not, between pitch body and container bottom, there is cavity, can be up and down along resistance wire for conducting sphere, wherein metallic conduction ball can be enclosed within on resistance wire and slide up and down, the resistance of regulating circuit, changes the brightness of indicator lamp.At the top of container, interior electric conductor is installed, between conducting sphere and interior electric conductor, connects by the second wire.It is mobilizable why conducting sphere is set to, and is in order to make container only when upright or the handstand position, Cai loop is in connected state.When container is during in handstand position, because causing circuitous resistance, the access of resistance wire becomes large, and indicator lamp is dimmed.When container is during in upright position, owing to not being connected into resistance wire, so indicator lamp is brighter.Bottom at container connects on the lower electric conductor at cylinder foot by the first wire, avoids container excessive in left and right directions motion.
Steering is mainly to realize turning to of boring.Enter and turn to the water under high pressure of jet pipe by turning to jet orifice to flow out by high-pressure water pipe, along the direction ejaculation angled with drilling axis, act on rib and form jet orifice, to subsequently boring continue creep into, play the effect of guiding, make boring direction trend towards gradually jet direction, complete turning to of boring.
Making cave system is mainly that rib is washed away, destroyed, and forms large cave according to designing requirement, realizes stress of coal seam and discharges.Water after high-pressure hydraulic pump pressurizes, by making cave jet pipe, enters isocon, then enters respectively and makes cave jet orifice, makes cave jet orifice and is fan-shaped layout along drill bit.The later High-Pressure Water that pressurizes, washes away, destroys rib, and coal petrography is come off.Destroy coal dust passing away for fear of making in the process of cave, will strictly control and make cave jet orifice jet direction, while carrying out jet operation, jet current all act on drill bit top coal petrography, can effectively avoid like this later stage coal dust to discharge and impact.
The row powder operation of the utility model in operation process is mainly to discharge to creep into, make the coal dust producing in the process of cave.Before two borings are communicated with, coal dust is mainly that discharge the circular passage by between drilling rod and coal seam, and when carrying out a boring make cave after two borings being communicated with, coal dust is discharged from another one boring.Wherein discharging needed power is mainly the large water gaging of entering by inlet opening.
After a large amount of coal dusts are discharged, to hell be fixed, sealing, union extraction.Method is identical with conventional union drainage method, also no longer sets forth.Ingehious design between interior black box and exterior seal assembly can effectively reduce a large amount of outflows of drilling rod internal water, has so not only reduced the outflow waste of water, and continuous water filling impacts to water inlet to have avoided drilling rod rotation.
Specific construction step of the present utility model is as follows:
1), equipment is checked, carry out the preparation before construction.
2), start large discharge capacity water pump and motor, start to creep into, until collapse hole is serious, while being difficult to continue to creep into, stop creeping into, exit drilling tool, adopt multistage support aperture apparatus commute collapse hole section effectively to support, support after complete and continue to creep into, can again be lowered to multistage anti-collapse aperture apparatus if again run into serious collapse hole, until drilling depth reaches requirement, complete the creeping into of straight hole part in first hole.
3), now, indicator lamp is inserted to socket, rotate by a small margin drilling rod, according to indicator light switch and bright situation, after jet orifice is positioned, high-pressure hydraulic pump is connected to and turns to jet pipeline, open high-pressure hydraulic pump, turn to jet operation, until Jet Penetration Depth reaches designing requirement, complete the deflecting in first hole.
4), continue to creep into, in coal seam, form the hole of certain radian, in the time reaching designing requirement, complete creeping into of the first hole.
5), repeat above-mentioned 2) ~ 4) step, creeping into this distance, hole, complete respectively that straight hole creeps into, the engineering in the hole of deflecting and certain radian.Final realization is communicated with first hole.
6), in first hole, pipeline reach hole compared with depths, open indicator lamp, orientation is carried out in jet orifice orientation, rotary drill rod by a small margin, until indicator lamp is bright, now connects high-pressure hydraulic pump to making cave jet pipeline, open high-pressure hydraulic pump.Carry out water jet and make cave operation, and start large discharge capacity water pump coal dust is rushed and taken.
7), when going out coal dust when less, drilling rod is pulled outwardly to repeating step 6), be lowered to multistage supporting sleeve place until drilling rod is moved to.Subsequently, switch off the pump and motor, it be lowered in second boring again to repeating step 6) ~ 7), until complete second hole make cave operation.
8), adopt multistage supporting sleeve special tool, supporting sleeve is reclaimed.
9), equipment is cleaned, boring is carried out to connecting leg extraction.
The appropriate design of bearing unit in the utility model, can accurately determine and the direction of jet orifice and crossover port make jet work evidence-based.Adopt the utility model to make cave, rush powder operation, can make stress of coal seam effectively be discharged, promote the quick output of gas.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 be in Fig. 1 B to view figure;
Fig. 4 is the structural representation of positioner;
Fig. 5 adopts the utility model to make the sectional view behind cave;
Fig. 6 is the schematic diagram after two borings are communicated with;
In figure, the Reference numeral of each parts is:
1-high-pressure water pipe; 2-high-pressure hydraulic pump; 3-the second wire; Black box in 6-; 7-exterior seal assembly; 8-the first tube connector 8; 10-conducting sphere; 12-turns to jet pipe; 13-makes cave jet pipe; 14-drilling rod; 15-resistance wire; 16-hole enlargement piece; 17-; 18-turns to jet orifice; 19-diamond drilling tooth; 20-the second tube connector; 21-isocon; 22-water tank; The large discharge capacity water pump of 23-; 24-indicator lamp; 25-socket; 30-the first wire; 31-positioner; 32-fixed mount; 33-intake tunnel; 34-makes cave jet orifice; 35-inlet opening; 36-drill bit; Electric conductor under 37-; 38-roly-poly type container; 39-pitch body; 40-cylinder; Electric conductor in 41-; The upper electric conductor of 42-; 43-first holes; 44-second holes.
The specific embodiment
As shown in Fig. 1-Fig. 6, the anti-reflection device of cherry coal of the present utility model development area stress release, comprise the drilling rod 14 of hollow structure, drilling rod 14 front ends are provided with conical drill bit 36, in drilling rod 14, be provided with steering, make cave system and orientation system, the middle part, rear end of drilling rod 14 is connected with water under high pressure feed system, steering and make the corresponding junction that cave system is positioned at the top of drilling rod 14 and is connected respectively to drill bit 36, steering is all connected with water under high pressure feed system with the rear end of making cave system, and orientation system is located at the bottom in drilling rod 14.
Water under high pressure feed system comprises water tank 22, high-pressure hydraulic pump 2 and large discharge capacity water pump 23, high-pressure hydraulic pump 2 is connected with water tank 22 by high-pressure water pipe 1 respectively with large discharge capacity water pump 23, the delivery port of high-pressure hydraulic pump 2 is connected with steering and the water inlet of making cave system respectively, and the large delivery port of discharge capacity water pump 23 and middle part, the rear end of drilling rod 14 are connected.
Steering comprise be located in drilling rod 14 and along drilling rod 14 axial direction settings turn to jet pipe 12 and be located at drill bit 36 tops turn to jet orifice 18, turn to the front end of jet pipe 12 to be connected with turning to jet orifice 18 by the first tube connector 8.
Make cave system comprise make cave jet pipe 13, isocon 21 and be located at drill bit 36 tops make cave jet orifice 34, making cave jet pipe 13 is connected with isocon 21 by the second tube connector 20, making cave jet orifice 34 is connected with the delivery port of isocon 21, make cave jet orifice 34 and be provided with at least two, make cave jet orifice 34 and be the slotted hole structure of circular arc.
Orientation system comprises fixed mount 32, positioner 31, indicator lamp 24 and socket 25, fixed mount 32 is located at the bottom in drilling rod 14, positioner 31 is located on fixed mount 32, socket 25 is located at the rearward end of drilling rod 14, socket 25 is connected with positioner 31 by the first wire 30, and indicator lamp 24 is plugged on socket 25;
Positioner 31 comprises horizontally disposed cylinder 40, in cylinder 40, be provided with the container 38 of roly-poly type, in container 38, be loaded with pitch body 39, between the bottom of pitch body 39 and container 38, there is cavity, top in cylinder 40 is provided with electric conductor 42, the bottom in cylinder 40 outsides is provided with lower electric conductor 37, upper electric conductor 42 and lower electric conductor 37 are vertically gone up corresponding, container 38 bottoms are provided with the linear resistance wire 15 being connected with lower electric conductor 37, on resistance wire 15, be equipped with the conducting sphere 10 that can slide along resistance wire 15, the top of container 38 is provided with the interior electric conductor 41 that can be connected with upper electric conductor 42, between conducting sphere 10 and interior electric conductor 41, connect by the second wire 3.
On drilling rod 14 nose circle side faces, be evenly provided with a circle and close on the hole enlargement piece 16 of drill bit 36.
The central axis of drill bit 36 is provided with and the inner intake tunnel 33 being connected of drilling rod 14, and drill bit 36 front ends are provided with the inlet opening 35 being connected with intake tunnel 33, and the pre-small post-large trochoidal surface outside drill bit 36 is provided with diamond drilling tooth 19.
Drilling rod 14 rear ends are provided with the interior black box 6 and the exterior seal assembly 7 that are connected with water under high pressure feed system, and between interior black box 6 and exterior seal assembly 7, bending the cooperation that intersects are provided with ring packing rubber pad between interior black box 6 and exterior seal assembly 7.
Dynamical system of the present utility model is mainly to provide needed power in rod boring process, creeps into identically with conventional drilling tool, does not repeat them here.For making the needed power in cave, be, by high-pressure hydraulic pump 2, water pressurization is acted on to rib with the form of high speed, high-pressure water jet later, rib is washed away, destroyed, and then make cave.Discharging needed power for creeping into, make coal dust in the process of cave, is mainly by large discharge capacity water pump 23, and large water gaging is injected from drilling rod 14 is inner, is sprayed coal dust is discharged along the passage between drilling rod 14 and hole wall by drill bit.
The utility model needs to have multistage support hole system in operation process, and this system is mainly used for boring effectively to support, and avoids collapse hole.In drilling process, destroy seriously when meeting coal body, while there is continuously collapse hole phenomenon, can adopt this system effectively to support rib, avoid further destruction.Wherein this system can, for the anti-collapse hole of part, also can all be used this system to carry out anti-collapse hole operation by whole eyelet.
Orientation system is mainly that the orientation to turning to jet orifice 18 and making cave jet orifice 34 is determined, avoids blindly making cave, guarantees to turn to and make orientation, cave to meet design requirement.
The design of this orientation system take full advantage of tumbler not fall principle.Position and the conducting sphere 10 of the container 38 by appropriate design roly-poly type move up and down along resistance wire 15, and while making to turn to jet orifice 18 and drilling rod 14 axis lines to be horizontal, whole circuit forms loop, and indicator lamp is bright.And container 38 is in the time of upright position, and indicator lamp 24 is the brightest.When container 38 during in handstand position because resistance wire 15 is connected into circuit, cause circuitous resistance to increase, indicator lamp 24 brightness are darker.Therefore can be according to the switch of indicator lamp 24 and bright dark, the position that judgement turns to jet orifice 18 and makes cave jet orifice 34.
Positioner 31 is fixed in the bottom in drilling rod 14 by fixed mount 32, draw two the first wires 30 is connected to socket 25 from fixed mount 32 inside, wherein socket 25 is fixed on the end face of drilling rod 14 rearmost ends, by indicator lamp 24 is inserted to socket 25, can whether open with bright degree and position judgement according to indicator lamp 24.Wherein the shell of positioner 31 is the cylinder 40 of the hollow-core construction made of a glass fiber reinforced plastic, and wherein the axis of this cylinder 40 is parallel with the axis of drilling rod 14.In the top of this cylinder 40 with distribute and fixed electric conductor and lower electric conductor bottom, upper electric conductor is connected with the first wire 30 with lower electric conductor simultaneously, container 38 in the inside of cylinder 40 is to be that hollow semicolumn, top are that triangle body combines by bottom, container 38 can only swing at left and right directions, at fore-and-aft direction because the restriction that is subject to fixed mount 32 can not swing.Be fixed with the fixed pitch body 39 for solid shape in the bottom of container 38, its medium pitch body 39 is the bottom of complete cartridge 38 not, between pitch body 39 and container 38 bottoms, there is cavity, can be up and down along resistance wire 15 for conducting sphere 10, wherein metallic conduction ball 10 can be enclosed within on resistance wire 15 and slide up and down, the resistance of regulating circuit, changes the brightness of indicator lamp 24.Interior electric conductor 41 is installed at the top of container 38, between conducting sphere 10 and interior electric conductor 41, connects by the second wire 3.It is mobilizable why conducting sphere 10 is set to, and is in order to make container 38 only when upright or the handstand position, Cai loop is in connected state.When container 38 is during in handstand position, because causing circuitous resistance, the access of resistance wire 15 becomes large, and indicator lamp 24 is dimmed.When container 38 is during in upright position, owing to not being connected into resistance wire 15, so indicator lamp 24 is brighter.Bottom at container 38 connects on the lower electric conductor 37 of cylinder 40 foots by the first wire 30, avoids container 38 excessive in left and right directions motion.
Steering is mainly to realize turning to of boring.Enter and turn to the water under high pressure of jet pipe 12 by turning to jet orifice 18 to flow out by high-pressure water pipe 1, along the direction ejaculation angled with drilling axis, act on rib and form jet orifice, to subsequently boring continue creep into, play the effect of guiding, make boring direction trend towards gradually jet direction, complete turning to of boring.
Making cave system is mainly that rib is washed away, destroyed, and forms large cave according to designing requirement, realizes stress of coal seam and discharges.Water after high-pressure hydraulic pump 2 pressurizes, by making cave jet pipe 13, enters isocon 21, then enters respectively and makes cave jet orifice 34, makes cave jet orifice 34 and arranges along drill bit annular.The later High-Pressure Water that pressurizes, washes away, destroys rib, and coal petrography is come off.Destroy coal dust passing away for fear of making in the process of cave, will make all design drill bit 36 tops of cave jet orifice 34, can effectively avoid like this later stage coal dust to discharge and impact.
The row powder of the utility model in operation process is mainly to discharge to creep into, make the coal dust producing in the process of cave.Before the first boring 43 and the second boring 44 connections, coal dust is mainly to discharge by the circular passage between drilling rod 14 and coal seam, after the first boring 43 and the second boring 44 connections, the first boring 43 or the second boring 44 holes while making cave, coal dust is from other the second boring 44 or the first boring 43 discharges again.Wherein discharging needed power is mainly the large water gaging of entering by inlet opening.
After a large amount of coal dusts are discharged, to aperture be fixed, sealing, union extraction.Method is identical with conventional union drainage method, also no longer sets forth.Ingehious design between interior black box and exterior seal assembly can effectively reduce a large amount of outflows of drilling rod 14 internal water, has so not only reduced the outflow waste of water, and has avoided drilling rod 14 to rotate the continuous water filling to water inlet impacting.
Specific construction step of the present utility model is as follows:
1), equipment is checked, carry out the preparation before construction.
2), start large discharge capacity water pump 23 and motor, start to creep into, until collapse hole is serious, while being difficult to continue to creep into, stop creeping into, exit drilling tool, adopt multistage support aperture apparatus commute collapse hole section effectively to support, support after complete and continue to creep into, can again be lowered to multistage anti-collapse aperture apparatus if again run into serious collapse hole, until drilling depth reaches requirement, complete the creeping into of straight hole part in first hole.
3), now, indicator lamp 24 is inserted to socket 25, rotate by a small margin drilling rod 14, according to indicator lamp 24 switches and bright situation, after jet orifice is positioned, high-pressure hydraulic pump 2 is connected to and turns to jet pipe 12, open high-pressure hydraulic pump 2, turn to jet operation, until Jet Penetration Depth reaches designing requirement, complete the deflecting in first hole.
4), continue to creep into, in coal seam, form the hole of certain radian, in the time reaching designing requirement, complete creeping into of the first hole.
5), repeat above-mentioned 2) ~ 4) step, creeping into this distance, hole, complete respectively that straight hole creeps into, the engineering in the hole of deflecting and certain radian.Final realization is communicated with first hole.
6), in first hole, pipeline reach hole compared with depths, open indicator lamp 24, orientation is carried out in jet orifice orientation, rotary drill rod 14 by a small margin, until indicator lamp 24 is bright, now connects high-pressure hydraulic pump 2 to making cave jet pipe 13, open high-pressure hydraulic pump 2.Carry out water jet and make cave operation, and start large discharge capacity water pump 23 coal dust is rushed and taken.
7), when going out coal dust when less, drilling rod 14 is pulled outwardly to repeating step 6), be lowered to multistage supporting sleeve place until drilling rod 14 is moved to.Subsequently, switch off the pump and motor, it be lowered in second boring again to repeating step 6) ~ 7), until complete second hole make cave operation.
8), adopt multistage supporting sleeve special tool, supporting sleeve is reclaimed.
9), equipment is cleaned, boring is carried out to connecting leg extraction.
The present embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.
Claims (7)
1. the anti-reflection device of cherry coal development area stress release, it is characterized in that: the drilling rod (14) that comprises hollow structure, drilling rod (14) front end is provided with conical drill bit (36), in drilling rod (14), be provided with steering and make cave system, the middle part, rear end of drilling rod (14) is connected with water under high pressure feed system, steering and make cave system to be positioned at drilling rod (14) inner and be connected respectively to the corresponding junction of drill bit (36), steering is all connected with water under high pressure feed system with the rear end of making cave system.
2. the anti-reflection device of cherry coal according to claim 1 development area stress release, it is characterized in that: described water under high pressure feed system comprises water tank (22), high-pressure hydraulic pump (2) and large discharge capacity water pump (23), high-pressure hydraulic pump (2) is connected with water tank (22) by high-pressure water pipe (1) respectively with large discharge capacity water pump (23), the delivery port of high-pressure hydraulic pump (2) is connected with steering and the water inlet of making cave system respectively, and the large delivery port of discharge capacity water pump (23) and middle part, the rear end of drilling rod (14) are connected.
3. the anti-reflection device of cherry coal according to claim 1 and 2 development area stress release, it is characterized in that: described steering comprise be located in drilling rod (14) and along drilling rod (14) axial direction setting turn to jet pipe (12) and be located at drill bit (36) top turn to jet orifice (18), turn to the front end of jet pipe (12) to be connected with turning to jet orifice (18) by the first tube connector (8).
4. the anti-reflection device of cherry coal according to claim 1 and 2 development area stress release, it is characterized in that: described in make cave system comprise make cave jet pipe (13), isocon (21) and be located at drill bit (36) top make cave jet orifice (34), making cave jet pipe (13) is connected with isocon (21) by the second tube connector (20), making cave jet orifice (34) is connected with the delivery port of isocon (21), make cave jet orifice (34) and be provided with at least two, make cave jet orifice (34) and be the slotted hole structure of circular arc.
5. the anti-reflection device of cherry coal according to claim 1 and 2 development area stress release, is characterized in that: the hole enlargement piece (16) that is evenly provided with a circle on described drilling rod (14) nose circle side face and closes on drill bit (36).
6. the anti-reflection device of cherry coal according to claim 1 and 2 development area stress release, it is characterized in that: the central axis of described drill bit (36) is provided with and the inner intake tunnel (33) being connected of drilling rod (14), drill bit (36) front end is provided with the inlet opening (35) being connected with intake tunnel (33), and the outer pre-small post-large trochoidal surface of drill bit (36) is provided with diamond drilling tooth (19).
7. the anti-reflection device of cherry coal according to claim 1 and 2 development area stress release, it is characterized in that: described drilling rod (14) rear end is provided with the interior black box (6) and the exterior seal assembly (7) that are connected with water under high pressure feed system, between interior black box (6) and exterior seal assembly (7), bending the cooperation that intersects are provided with ring packing rubber pad between interior black box (6) and exterior seal assembly (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036516.7U CN203702234U (en) | 2014-01-21 | 2014-01-21 | Stress-releasing permeability increasing device in soft coal development area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036516.7U CN203702234U (en) | 2014-01-21 | 2014-01-21 | Stress-releasing permeability increasing device in soft coal development area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702234U true CN203702234U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420036516.7U Expired - Fee Related CN203702234U (en) | 2014-01-21 | 2014-01-21 | Stress-releasing permeability increasing device in soft coal development area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356553A (en) * | 2018-10-29 | 2019-02-19 | 中国矿业大学 | A kind of coal bed gas horizontal well collapse hole makes cave Depressurized mining simulation experiment system |
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2014
- 2014-01-21 CN CN201420036516.7U patent/CN203702234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356553A (en) * | 2018-10-29 | 2019-02-19 | 中国矿业大学 | A kind of coal bed gas horizontal well collapse hole makes cave Depressurized mining simulation experiment system |
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