CN106320979A - Fixed drilling device for fully mechanized mining face crossing fault and use method - Google Patents
Fixed drilling device for fully mechanized mining face crossing fault and use method Download PDFInfo
- Publication number
- CN106320979A CN106320979A CN201610851614.XA CN201610851614A CN106320979A CN 106320979 A CN106320979 A CN 106320979A CN 201610851614 A CN201610851614 A CN 201610851614A CN 106320979 A CN106320979 A CN 106320979A
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- Prior art keywords
- oil cylinder
- forearm
- large arm
- cylinder
- control
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- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 238000005065 mining Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 18
- 210000000245 forearm Anatomy 0.000 claims description 46
- 238000003325 tomography Methods 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 11
- 239000003245 coal Substances 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a fixed drilling device for a fully mechanized mining face crossing fault and a use method. The device comprises a base, a control console, a sliding rail, guiding sliding shoes, an adapter, a large arm, a small arm, a rotary disc, a drilling machine, a supporting oil cylinder and driving oil cylinders. A drilling device is fixedly arranged on a hydraulic support. The method includes the steps that the guiding sliding shoes are controlled to move to enable the large arm, the small arm and the drilling machine to be close to fault rock mass, the large arm is controlled to descend, the small arm is controlled to ascend, the adapter is controlled to horizontally rotate to enable the large arm, the small arm and the drilling machine to rotate along with the adapter, and the rotary disc is controlled to rotate to enable the drilling machine to rotate along with the rotary disc till the drilling machine is located at a drilling position; the supporting oil cylinder is adjusted to be located over a scraper conveyer, the supporting oil cylinder is jacked between the small arm and the scraper conveyer, the drilling machine is started to complete drilling work, the supporting oil cylinder is controlled to be lifted away from the scraper conveyer, the large arm, the small arm and the drilling machine are adjusted in the same plane, the small arm is controlled to descend, the large arm is controlled to ascend, and the guiding sliding shoes are controlled to move to enable the large arm, the small arm and the drilling machine to be away from the fault rock mass.
Description
Technical field
The invention belongs to coal mine machinery technical field, particularly relate to a kind of fixed for fully-mechanized mining working passing fault
Drilling equipment and using method.
Background technology
At present, during coal underground mining, due to the complexity of condition of coal seam occurrence, coal seam often also exist big
The little some tomographies not waited, run into tomography when fully-mechanized mining working advances, and fully-mechanized mining equipment will be unable to continue operation, thus hinder and combine
The normal of mining face advances, and there are two kinds of processing modes present stage, and the first is again to advance around hiatal fault, and the second is explosion
Tomography thrusts, and when running into major fault, can use the first processing mode, when running into craven fault, often uses second
Plant processing mode.
When use explosion tomography thrust passing fault mode time, it is necessary first to by fully-mechanized mining equipment partial demolition transfer or
Carry out security protection, the most again tomography is carried out explosion, to realize the normal propelling of fully-mechanized mining working.And before explosion tomography, need
To process some powder charge holes on tomography rock mass, these powder charge holes are all completed by manual operation pneumatic roof bolter,
Drilling efficiency is very low, and the labor intensity of workman is big especially, and passing fault process all can devote a tremendous amount of time each time, from
And had a strong impact on overall coal mining efficiency.Further, due to the passing fault mode of poor efficiency, also make the mechanization of fully-mechanized mining equipment
Advantage cannot be not fully exerted.
Present stage, technical staff's highly desirable raising passing fault efficiency, particularly improves the boring effect during passing fault
Rate, have to change, for this, the mode that Traditional Man operation pneumatic roof bolter carries out holing, then realize mechanization boring, skill
During art personnel expect traditional automatic rock drill of mechanization is introduced passing fault, but it is constrained to the narrow and small of fully-mechanized mining working
Space, the automatic rock drill of existing mechanization is due to huge volume, and it does not possess the bar used in fully-mechanized mining working
Part.
Therefore, it is necessary to design a kind of brand-new mechanization rig for fully-mechanized mining working passing fault, it should be effective
Improve drilling efficiency, and be effectively improved passing fault efficiency, make the mechanization advantage of fully-mechanized mining equipment be not fully exerted.
Summary of the invention
The problem existed for prior art, the present invention provides a kind of fixed boring for fully-mechanized mining working passing fault
Device and using method, it is possible to realize mechanization boring, effectively reduce labor strength, be effectively improved drilling efficiency and the most disconnected
Layer efficiency, it is possible to give full play to the mechanization advantage of fully-mechanized mining equipment.
To achieve these goals, the present invention adopts the following technical scheme that a kind of consolidating for fully-mechanized mining working passing fault
Fixed pattern drilling equipment, including base, control station, slide rail, guide slip shoe, adapter, large arm, forearm, rotary disk, rig, first
Oil cylinder, the second driving oil cylinder, the 3rd driving oil cylinder and the 4th is driven to drive oil cylinder；Described base is fixedly mounted on hydraulic support
On, described control station is fixedly mounted on base, and described slide rail is fixedly installed on control station upper surface, and described guide slip shoe is arranged
On slide rail, guide slip shoe is slidably matched with slide rail；Described adapter is hinged on guide slip shoe, and adapter is sliding relative to guiding
Boots have horizontal rotation degree of freedom；Described large arm one end is hinged on adapter, and the large arm other end is hinged with forearm, described time
Rotating disk is arranged on forearm, and described rig is arranged on rotary disk；Described first drives oil cylinder one end to be hinged on guide slip shoe,
First drives the oil cylinder other end to be hinged on adapter；Described second drives oil cylinder one end to be hinged on adapter, and second drives
The oil cylinder other end is hinged in large arm；Described 3rd drives oil cylinder one end to be hinged in large arm, and the 3rd drives oil cylinder other end hinge
It is connected on forearm；Described 4th drives on the hinged forearm in oil cylinder one end, and the 4th drives the oil cylinder other end to be hinged on rotary disk.
Described forearm is hinged with support cylinder, is connected between forearm with support cylinder and has the 5th driving oil cylinder, the
Five drive oil cylinder two ends to be hinged with forearm and support cylinder respectively；It is fixed with foot rest in described support cylinder bottom.
Described guide slip shoe, rig, the first driving oil cylinder, the second driving oil cylinder, the 3rd driving oil cylinder, the 4th driving oil
Cylinder, support cylinder and the 5th drive the action of oil cylinder all to be manipulated by control station.
The using method of the described fixed drilling equipment for fully-mechanized mining working passing fault, comprises the steps:
Step one: control guide slip shoe moves along slide rail and towards tomography rock mass, makes large arm, forearm and rig one
With near tomography rock mass；
Step 2: control the second driving cylinder action, make large arm fall；
Step 3: control the 3rd driving cylinder action, make forearm lift；
Step 4: control the first driving cylinder action, make adapter horizontal rotation, and then drive large arm, forearm and rig
Along with adapter together turns round；
Step 5: control the 4th driving cylinder action, make rotary disk rotate, and then drive rig together to turn along with rotary disk
It is dynamic, until rig is in bore position；
Step 6: control the 5th driving cylinder action, make support cylinder be perpendicular to ground and be positioned at drag conveyor and just go up
Side；
Step 7: control support cylinder action, make support cylinder shore between forearm and drag conveyor；
Step 8: start rig, completes the powder charge hole at this bore position and drills operation；
Step 9: adjust rig position, completes the powder charge hole at remaining bore position and drills operation；
Step 10: after completing the operation of drilling in last powder charge hole, controls support cylinder action, makes support cylinder be lifted away from
Drag conveyor；
Step 11: control the 5th driving cylinder action, make support cylinder close to large arm；
Step 12: control the first driving oil cylinder and the 4th respectively and drive cylinder action, make large arm, forearm and rig be in
In same plane；
Step 13: control the 3rd driving cylinder action, make forearm fall；
Step 14: control the second driving cylinder action, make large arm lift；
Step 15: control guide slip shoe along slide rail and dorsad tomography rock mass move, make large arm, forearm and rig
Together away from tomography rock mass.
Beneficial effects of the present invention:
Compared with the present invention operates, with Traditional Man, the mode that pneumatic roof bolter carries out holing, it is achieved that mechanization is holed,
Effectively reduce the labor intensity of workman, and be effectively increased drilling efficiency and passing fault efficiency, given full play to combine to adopt set
Standby mechanization advantage, has been effectively ensured overall coal mining efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of fixed drilling equipment structural representation for fully-mechanized mining working passing fault of the present invention；
Fig. 2 is the schematic diagram that the present invention and hydraulic support carry out equipped rear (bore state)；
Fig. 3 is the schematic diagram that the present invention and hydraulic support carry out equipped rear (non-bore state)；
In figure, 1 base, 2 control stations, 3 slide rails, 4 guide slip shoes, 5 adapters, 6 large arm, 7 forearms,
8 rotary disks, 9 rigs, 10 first driving oil cylinders, 11 second driving oil cylinders, 12 the 3rd driving oil cylinders, 13 the 4th
Driving oil cylinder, 14 hydraulic supports, 15 support cylinders, 16 the 5th drive oil cylinder, 17 tomography rock mass, 18 scraper plate conveyings
Machine, 19 foot rests.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 3, a kind of fixed drilling equipment for fully-mechanized mining working passing fault, including base 1, control
Platform 2, slide rail 3, guide slip shoe 4, adapter 5, large arm 6, forearm 7, rotary disk 8, rig 9, first drive oil cylinder 10, second to drive
Oil cylinder the 11, the 3rd drives oil cylinder 12 and the 4th to drive oil cylinder 13；Described base 1 is fixedly mounted on hydraulic support 14, described control
Platform 2 processed is fixedly mounted on base 1, and described slide rail 3 is fixedly installed on control station 2 upper surface, and described guide slip shoe 4 is arranged on cunning
On rail 3, guide slip shoe 4 is slidably matched with slide rail 3；Described adapter 5 is hinged on guide slip shoe 4, and adapter 5 is relative to guiding
Piston shoes 4 have horizontal rotation degree of freedom；Described large arm 6 one end is hinged on adapter 5, and large arm 6 other end cuts with scissors with forearm 7 phase
Connecing, described rotary disk 8 is arranged on forearm 7, and described rig 9 is arranged on rotary disk 8；Described first drives oil cylinder 10 one end hinge
Being connected on guide slip shoe 4, first drives oil cylinder 10 other end to be hinged on adapter 5；Described second drives oil cylinder 11 one end hinge
Being connected on adapter 5, second drives oil cylinder 11 other end to be hinged in large arm 6；Described 3rd drives oil cylinder 12 one end to be hinged on
In large arm 6, the 3rd drives oil cylinder 12 other end to be hinged on forearm 7；Described 4th drives on the hinged forearm in oil cylinder 13 one end 7,
4th drives oil cylinder 13 other end to be hinged on rotary disk 8.
Described forearm 7 is hinged with support cylinder 15, is connected between forearm 7 with support cylinder 15 and has the 5th driving oil
Cylinder 16, the 5th drives oil cylinder 16 two ends to be hinged with forearm 7 and support cylinder 15 respectively；It is connected in described support cylinder 15 bottom
There is foot rest 19.
Described guide slip shoe 4, rig 9, first drive oil cylinder 10, second to drive oil cylinder the 11, the 3rd to drive oil cylinder the 12, the 4th
Oil cylinder 13, support cylinder 15 and the 5th is driven to drive the action of oil cylinder 16 all to be manipulated by control station 2.
Run into tomography when fully-mechanized mining working advances, fully-mechanized mining equipment cannot continue operation, needs explosion tomography to thrust,
Now according to the physical length of tomography, hydraulic support 14 is installed an appropriate number of drilling equipment, and the most true
Determine bore position and drilling hole amount.
The using method of the described fixed drilling equipment for fully-mechanized mining working passing fault, comprises the steps:
Step one: control guide slip shoe 4 and move along slide rail 3 and towards tomography rock mass 17, make large arm 6, forearm 7 and
Rig 9 is together near tomography rock mass 17；
Step 2: control the second driving oil cylinder 11 action, make large arm 6 fall；
Step 3: control the 3rd driving oil cylinder 12 action, make forearm 7 lift；
Step 4: control the first driving oil cylinder 10 action, make adapter 5 horizontal rotation, so drive large arm 6, forearm 7 and
Rig 9 together turns round along with adapter 5；
Step 5: control the 4th driving oil cylinder 13 action, make rotary disk 8 rotate, and then drive rig 9 along with rotary disk 8
Together rotate, until rig 9 is in bore position；
Step 6: control the 5th driving oil cylinder 16 action, make support cylinder 15 be perpendicular to ground and be positioned at drag conveyor
Directly over 18；
Step 7: control support cylinder 15 action, make support cylinder 15 shore between forearm 7 and drag conveyor 18；
Step 8: start rig 9, completes the powder charge hole at this bore position and drills operation；
Step 9: adjust rig 9 position, completes the powder charge hole at remaining bore position and drills operation；
Step 10: after completing the operation of drilling in last powder charge hole, controls support cylinder 15 action, makes support cylinder 15
It is lifted away from drag conveyor 18；
Step 11: control the 5th driving oil cylinder 16 action, make support cylinder 15 close to large arm 6；
Step 12: control the first driving oil cylinder 10 and the 4th respectively and drive oil cylinder 13 action, make large arm 6, forearm 7 and bore
At machine 9 in the same plane；
Step 13: control the 3rd driving oil cylinder 12 action, make forearm 7 fall；
Step 14: control the second driving oil cylinder 11 action, make large arm 6 lift；
Step 15: control guide slip shoe 4 along slide rail 3 and dorsad tomography rock mass 17 move, make large arm 6, forearm 7
And rig 9 is together away from tomography rock mass 17.
Scheme in embodiment is also not used to limit the scope of patent protection of the present invention, all without departing from the present invention do etc.
Effect is implemented or change, is both contained in the scope of the claims of this case.
Claims (4)
1. the fixed drilling equipment for fully-mechanized mining working passing fault, it is characterised in that: include base, control station, cunning
Rail, guide slip shoe, adapter, large arm, forearm, rotary disk, rig, the first driving oil cylinder, the second driving oil cylinder, the 3rd driving oil
Cylinder and the 4th drives oil cylinder；Described base is fixedly mounted on hydraulic support, and described control station is fixedly mounted on base, described
Slide rail is fixedly installed on control station upper surface, and described guide slip shoe is arranged on slide rail, and guide slip shoe is slidably matched with slide rail；Institute
Stating adapter to be hinged on guide slip shoe, adapter has horizontal rotation degree of freedom relative to guide slip shoe；Described large arm one end
Being hinged on adapter, the large arm other end is hinged with forearm, and described rotary disk is arranged on forearm, and described rig is arranged on back
On rotating disk；Described first drives oil cylinder one end to be hinged on guide slip shoe, and first drives the oil cylinder other end to be hinged on adapter；
Described second drives oil cylinder one end to be hinged on adapter, and second drives the oil cylinder other end to be hinged in large arm；Described 3rd drives
Dynamic oil cylinder one end is hinged in large arm, and the 3rd drives the oil cylinder other end to be hinged on forearm；Described 4th drives oil cylinder one end hinge
Connecing on forearm, the 4th drives the oil cylinder other end to be hinged on rotary disk.
A kind of fixed drilling equipment for fully-mechanized mining working passing fault the most according to claim 1, it is characterised in that:
Being hinged with support cylinder on described forearm, be connected and have the 5th driving oil cylinder between forearm with support cylinder, the 5th drives oil
Cylinder two ends are hinged with forearm and support cylinder respectively；It is fixed with foot rest in described support cylinder bottom.
A kind of fixed drilling equipment for fully-mechanized mining working passing fault the most according to claim 2, it is characterised in that:
Described guide slip shoe, rig, first drive oil cylinder, second drive oil cylinder, the 3rd drive oil cylinder, the 4th drive oil cylinder, support oil
Cylinder and the 5th drives the action of oil cylinder all to be manipulated by control station.
4. the using method of the fixed drilling equipment for fully-mechanized mining working passing fault described in claim 1, its feature exists
In comprising the steps:
Step one: control guide slip shoe moves along slide rail and towards tomography rock mass, makes large arm, forearm and rig together lean on
Nearly tomography rock mass；
Step 2: control the second driving cylinder action, make large arm fall；
Step 3: control the 3rd driving cylinder action, make forearm lift；
Step 4: control the first driving cylinder action, make adapter horizontal rotation, so drive large arm, forearm and rig along with
Adapter together turns round；
Step 5: control the 4th driving cylinder action, make rotary disk rotate, and then drive rig together to rotate along with rotary disk,
Until rig is in bore position；
Step 6: control the 5th driving cylinder action, make support cylinder be perpendicular to ground and be positioned at directly over drag conveyor；
Step 7: control support cylinder action, make support cylinder shore between forearm and drag conveyor；
Step 8: start rig, completes the powder charge hole at this bore position and drills operation；
Step 9: adjust rig position, completes the powder charge hole at remaining bore position and drills operation；
Step 10: after completing the operation of drilling in last powder charge hole, controls support cylinder action, makes support cylinder be lifted away from scraper plate
Conveyer；
Step 11: control the 5th driving cylinder action, make support cylinder close to large arm；
Step 12: control the first driving oil cylinder and the 4th respectively and drive cylinder action, make large arm, forearm and rig be in same
In plane；
Step 13: control the 3rd driving cylinder action, make forearm fall；
Step 14: control the second driving cylinder action, make large arm lift；
Step 15: control guide slip shoe along slide rail and dorsad tomography rock mass move, make large arm, forearm and rig together
Away from tomography rock mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851614.XA CN106320979A (en) | 2016-09-26 | 2016-09-26 | Fixed drilling device for fully mechanized mining face crossing fault and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610851614.XA CN106320979A (en) | 2016-09-26 | 2016-09-26 | Fixed drilling device for fully mechanized mining face crossing fault and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106320979A true CN106320979A (en) | 2017-01-11 |
Family
ID=57820433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610851614.XA Pending CN106320979A (en) | 2016-09-26 | 2016-09-26 | Fixed drilling device for fully mechanized mining face crossing fault and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106320979A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023262A (en) * | 2017-04-17 | 2017-08-08 | 沈阳天安科技股份有限公司 | Fully mechanized mining scope of operation machine gun joins device for picking |
| CN110206528A (en) * | 2019-05-31 | 2019-09-06 | 中煤科工集团西安研究院有限公司 | For fully-mechanized mining working passing fault shot-hole rig and borehole construction method |
| CN111305810A (en) * | 2019-11-12 | 2020-06-19 | 国家能源集团乌海能源有限责任公司 | Outburst prevention drilling device, equipment and control method thereof |
| CN113914856A (en) * | 2021-09-26 | 2022-01-11 | 北京天玛智控科技股份有限公司 | Coal seam water injection device |
| CN115163104A (en) * | 2022-07-05 | 2022-10-11 | 四川省煤田地质工程勘察设计研究院 | Hydraulic advance pre-splitting based drill rod pushing device, comprehensive excavator and construction method |
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| US3481409A (en) * | 1966-11-14 | 1969-12-02 | Atlas Copco Ab | Electro-hydraulic parallel motion means for drill boom supported rock drilling apparatus |
| US4364540A (en) * | 1979-03-26 | 1982-12-21 | Etablissements Montabert S.A. | Support-arm assembly for a drill or borer, particularly for subterranean applications |
| CN202064830U (en) * | 2011-05-26 | 2011-12-07 | 中煤科工集团重庆研究院 | Post drill system for coal mining face |
| CN102606158A (en) * | 2012-03-15 | 2012-07-25 | 中国煤矿机械装备有限责任公司 | Novel low coal seam coal mine underground mining complete equipment |
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| CN203531747U (en) * | 2013-10-25 | 2014-04-09 | 四川芙蓉集团宜宾嘉业机械制造有限责任公司 | Frame-column-type emulsified liquid drilling machine for fully-mechanized face fault passing |
| CN206158584U (en) * | 2016-09-26 | 2017-05-10 | 辽宁工程技术大学 | A fixed drilling equipment for combining adopt working face and cross fault |
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| US3481409A (en) * | 1966-11-14 | 1969-12-02 | Atlas Copco Ab | Electro-hydraulic parallel motion means for drill boom supported rock drilling apparatus |
| US4364540A (en) * | 1979-03-26 | 1982-12-21 | Etablissements Montabert S.A. | Support-arm assembly for a drill or borer, particularly for subterranean applications |
| CN202064830U (en) * | 2011-05-26 | 2011-12-07 | 中煤科工集团重庆研究院 | Post drill system for coal mining face |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023262A (en) * | 2017-04-17 | 2017-08-08 | 沈阳天安科技股份有限公司 | Fully mechanized mining scope of operation machine gun joins device for picking |
| CN107023262B (en) * | 2017-04-17 | 2023-07-04 | 沈阳天安科技股份有限公司 | Cannon combined mining device for fully-mechanized mining face machine |
| CN110206528A (en) * | 2019-05-31 | 2019-09-06 | 中煤科工集团西安研究院有限公司 | For fully-mechanized mining working passing fault shot-hole rig and borehole construction method |
| CN111305810A (en) * | 2019-11-12 | 2020-06-19 | 国家能源集团乌海能源有限责任公司 | Outburst prevention drilling device, equipment and control method thereof |
| CN113914856A (en) * | 2021-09-26 | 2022-01-11 | 北京天玛智控科技股份有限公司 | Coal seam water injection device |
| CN115163104A (en) * | 2022-07-05 | 2022-10-11 | 四川省煤田地质工程勘察设计研究院 | Hydraulic advance pre-splitting based drill rod pushing device, comprehensive excavator and construction method |
| CN115163104B (en) * | 2022-07-05 | 2023-09-22 | 四川省煤田地质工程勘察设计研究院 | Hydraulic advanced pre-splitting drill rod pushing device, fully-mechanized excavating machine and construction method |
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Application publication date: 20170111 |