CN106150373A - A kind of coal mine down-hole tunnel base plate anchor rod drilling device - Google Patents
A kind of coal mine down-hole tunnel base plate anchor rod drilling device Download PDFInfo
- Publication number
- CN106150373A CN106150373A CN201610620385.0A CN201610620385A CN106150373A CN 106150373 A CN106150373 A CN 106150373A CN 201610620385 A CN201610620385 A CN 201610620385A CN 106150373 A CN106150373 A CN 106150373A
- Authority
- CN
- China
- Prior art keywords
- positioning
- underframe
- guide groove
- supporting cylinder
- locking nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B15/045—Hydraulic, pneumatic or electric circuits for their positioning
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/024—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
Abstract
The invention discloses a kind of coal mine down-hole tunnel base plate anchor rod drilling device, including underframe (1), workpiece (2), added (3) and device positioning element (4)；It added is fixedly mounted on underframe；Workpiece is arranged on underframe, including body (21), front and back guide groove (22), front and back positioning and locking nut (23), left and right guide groove (24), left and right positioning and locking nut (25), rig installing rack (26) and rig (27)；Device positioning element includes top positioning supporting cylinder (41), bottom positioning supporting cylinder (42) and control valve group (43), and control valve group is connected with top positioning supporting cylinder and bottom positioning supporting cylinder respectively.This coal mine down-hole tunnel base plate anchor rod drilling device simple in construction, quickly carries out drilling operation, the overall rockbolt installation speed that improves, the requirement of adaptation Quick Road-Made in boring procedure to roadway floor on the premise of can providing reverse holding power.
Description
Technical field
The present invention relates to a kind of drilling equipment, specifically one is applicable to underground coal mine and carries out anchor pole of holing to roadway floor
The coal mine down-hole tunnel base plate anchor rod drilling device of supporting, belongs to down-hole support equipment technical field.
Background technology
Due to the difference of the self-characteristic of different depth rock mass and residing ambient stress around tunnel, transported by geologic rhythm
The factor impacts such as dynamic, ground water pressure, country rock easily produces Incoordinate deformation, especially for underground coal mine exploitation, top, tunnel, the end
Plate and two helps country rock to be deformed and move in tunnel, and the phenomenon that wherein roadway floor or gob floor upwards swell is
Referred to as pucking, pucking is a kind of dynamic phenomenon often occurring in roadway, the character of it and country rock, mining influence, mining depth
And geological structure etc. is directly related, some Floor Heave in Roadway amount of domestic mine even account for top, tunnel, the base plate amount of shifting near 70% with
On, bigger particular for mining depth, have that stress is high, temperature is high, underground water hydraulic pressure is high, strength of turbulence is high, danger of burst
The deep-seated setting of the features such as height, creep is obvious, deformation is big, high stress and soft rock mine roadway and chamber, pucking makes roadway deformation, section become
Little, drastically influence the links such as mine ventilation, transport and personnel's walking, restriction mine safety and high-yield and high-efficiency produce.
Underground coal mine prevents the generation of pucking phenomenon from not only wanting reinforcement roadway support, reinforced design method, and will be according to specifically
Wall rock geology condition take measures pucking amount is reduced to allowed band, generally use method for strengthening, destressing method, combination method and add
Gu the methods such as tunnel side, angle reduce pucking phenomenon, wherein method for strengthening is to be enclosed base plate by improving floor rocks intensity or raising
The supporting power of rock reaches the purpose of floor lift control, is a kind of the most frequently used pucking control method.
Improve the intensity of floor rocks, mainly have floor grouting, floor bolting etc., suspension roof support is being used to base plate
Needing during operation first to hole base plate, conventional method need to be supported by pin or reverse air leg in boring procedure above drilling rod
On back, providing reverse holding power, but due in order to ensure that roadway floor does not destroys before installing anchor pole, it is necessary to
Installing anchor pole in driving face certain distance, the size of this distance is relevant with the character of floor rock, typically should be little
In 10 meters, simultaneously unaffected in order to ensure tunnelling speed, the speed of usual rockbolt installation wants fast, and this traditional brill
Hole method operation not only complicated, manpower and materials consume big, and hole and install the speed of anchor pole compared with slow, efficiency is low, inadaptable
Requirement in Quick Road-Made.
Content of the invention
For the problems referred to above, the present invention provides a kind of coal mine down-hole tunnel base plate anchor rod drilling device, and simple in construction can
The quick drilling operation that carries out roadway floor, and then overall raising is realized on the premise of reverse holding power is provided in boring procedure
Rockbolt installation speed, is adapted to the requirement of Quick Road-Made.
For achieving the above object, this coal mine down-hole tunnel base plate anchor rod drilling device include underframe, workpiece, added and
Device positioning element；
Described added being fixedly mounted on underframe, underframe bottom is provided with roller；
Described workpiece is arranged on underframe, including body, front and back guide groove, front and back positioning and locking nut, a left side
Right guide groove, left and right positioning and locking nut, rig installing rack and rig；Body is rectangle frame structure, and both ends of the surface are led to around
Cross and be positioned at the cylindricality slip shoe frame of end face central authorities and be located at before and after fore-and-aft direction is arranged on underframe medial surface on guide groove, be provided with
The end of the cylindricality piston shoes of screw thread passes through guide groove front and back；Front and back positioning and locking nut coordinates with the end thread of cylindricality piston shoes
And be pressed on the lateral surface of before and after's guide groove；Before and after rig installing rack, both ends of the surface are located at right and left by cylindricality slip shoe frame
On the left and right guide groove being arranged on body medial surface, if the end of threaded cylindricality piston shoes passes through left and right and guides logical
Groove；Left and right positioning and locking nut coordinates with the end thread of cylindricality piston shoes and is pressed on the lateral surface of left and right guide groove；Institute
The rig stated is vertically arranged and is arranged on rig installing rack；
Described device positioning element includes top positioning supporting cylinder, bottom positioning supporting cylinder and control valve
Group；Top positioning supporting cylinder is set to two pieces, and two pieces top positioning supporting cylinder piston end sets up, about cylinder body
Symmetry is vertically fixedly mounted on the centre position of added fore-and-aft direction, and its piston end end is provided with support footstock；Bottom positioning
Supporting cylinder is set to two pieces, and bottom two pieces, positioning supporting cylinder piston end is down-set, cylinder body is symmetrical vertically solid
Dingan County is contained on the centre position of underframe fore-and-aft direction, and its piston end end is provided with support base；Control valve group is arranged on underframe
Or on added, the output of control valve group supports liquid by fluid pressure line with top positioning supporting cylinder and bottom positioning respectively
Cylinder pressure connects.
Scheme as a further improvement on the present invention, described underframe and added be all frame structure.
Scheme as a further improvement on the present invention, described underframe and/or added frame structure two sides are provided with
Supporting rib stiffener arranged in a crossed manner.
Scheme as a further improvement on the present invention, positioning and locking nut and left and right positioning and locking spiral shell before and after described positioning
It is radially provided with handle on mother.
Scheme as a further improvement on the present invention, described before and after positioning and locking nut inner face with front and back guide logical
Between the inner face of between the lateral surface of groove and left and right positioning and locking nut and the lateral surface of left and right guide groove, ecto-entad depends on
It secondary is provided with spring washer and plain washer.
Compared with prior art, this coal mine down-hole tunnel base plate anchor rod drilling device is owing to being provided be arranged on underframe upper
Frame, top positioning supporting cylinder and control valve group are arranged on added, and bottom positioning supporting cylinder is arranged on underframe,
Therefore being manipulated by valve group makes top positioning supporting cylinder and bottom positioning supporting cylinder stretch out respectively, and top positions
The support footstock of supporting cylinder acts against on top board, the support base of bottom positioning supporting cylinder acts against and makes the end on base plate
Frame forms stable rigid support between back and base plate, and during boring, the drilling rod of rig pierces the anti-work that base plate produces
Firmly acting on underframe by rig installing rack, body, underframe is fixed by top positioning supporting cylinder and bottom by active force
Position supporting cylinder directly acts on back and base plate, does not therefore need above the drilling rod of rig with pin or reverse gas
Leg is supported on back to provide reverse holding power；Owing to workpiece is provided with before and after's guide groove, front and back positioning and locking
Therefore this coal mine down-hole tunnel base plate anchor rod drilling device is had good positioning by nut, left and right guide groove, left and right positioning and locking nut
After can realize that pinpointing a position can complete multiple rows of or multiple row hole operation, i.e. can realize rig at front and back's guide groove
Carry out positioning boring with the bore position of all full lines in the guide groove stroke range of left and right and permutation；Due to body and underframe
Between, be equipped with cylindricality piston shoes between rig installing rack and body, therefore can realize to non-on fore-and-aft direction or left and right directions
Perfectly level roadway floor carries out vertical drilling；This coal mine down-hole tunnel base plate anchor rod drilling device simple in construction, be easy to behaviour
Work controls, and can carry out rockbolt installation after completing boring, and speed, the installation effectiveness of boring and installation anchor pole are high, are adapted to
The requirement of Quick Road-Made, uses the Quick mounting anchor rod of floor bolting when being particularly well-suited to administer Floor Heave in Roadway.
Brief description
Fig. 1 is the three-dimensional structure schematic diagram of the present invention；
Fig. 2 is the attachment structure schematic diagram of guide groove and front and back positioning and locking nut before and after the present invention.
In figure: the 1st, underframe, the 2nd, workpiece, the 21st, body, the 22nd, front and back guide groove, the 23rd, front and back positioning and locking nut,
24th, left and right guide groove, the 25th, left and right positioning and locking nut, the 26th, rig installing rack, the 27th, rig, the 3rd, added, the 4th, device location division
Part, the 41st, top positioning supporting cylinder, the 42nd, bottom positioning supporting cylinder, the 43rd, control valve group.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, this coal mine down-hole tunnel base plate anchor rod drilling device include underframe the 1st, workpiece the 2nd, added 3 and dress
Put positioning element 4.
Described added 3 are fixedly mounted on underframe 1, and underframe 1 bottom is provided with roller.
Described workpiece 2 is arranged on underframe 1, including body the 21st, front and back guide groove the 22nd, front and back positioning and locking spiral shell
Female 23rd, left and right guide groove the 24th, left and right positioning and locking nut the 25th, rig installing rack 26 and rig 27；Body 21 is rectangle frame knot
Structure, both ends of the surface are located at fore-and-aft direction are arranged on underframe 1 medial surface by being positioned at the cylindricality slip shoe frame of end face central authorities around
Front and back on guide groove 22, if the end of threaded cylindricality piston shoes passes through guide groove 22 front and back, body 21 can pass through post
Shape piston shoes movable or along cylindricality piston shoes axle center on front and back's guide groove 22 rotates and changes angle；As in figure 2 it is shown, it is front
Rear positioning and locking nut 23 coordinates with the end thread of cylindricality piston shoes and is pressed on the lateral surface of before and after's guide groove 22, body
By unclamping or screwing before and after's positioning and locking nut 23,21 can realize that fore-and-aft direction moves or positions on underframe 1；Rig is pacified
Shelve both ends of the surface before and after 26 to be located at, by cylindricality slip shoe frame, the left and right that left and right directions is arranged on body 21 medial surface and guide logical
On groove 24, if the end of threaded cylindricality piston shoes passes through left and right guide groove 24, rig installing rack 26 can be sliding by cylindricality
Boots move left and right on left and right guide groove 24 or along cylindricality piston shoes axle center rotate change angle；Left and right positioning and locking nut
25 coordinate with the end thread of cylindricality piston shoes and are pressed on the lateral surface of left and right guide groove 24, and rig installing rack 26 can lead to
Cross and unclamp or screw left and right positioning and locking nut 25 and realize that left and right directions moves or positions on body 21；Rig 27 is vertically arranged
It is arranged on rig installing rack 26.
Described device positioning element 4 includes top positioning supporting cylinder the 41st, bottom positioning supporting cylinder 42 and control
Valve group 43 processed；Top positioning supporting cylinder 41 is set to two pieces, and two pieces top positioning supporting cylinder 41 piston end upwards sets
Put, on the symmetrical centre position being vertically fixedly mounted on added 3 fore-and-aft directions of cylinder body, its piston end end is provided with a support
Seat；Bottom positioning supporting cylinder 42 is set to two pieces, positions that supporting cylinder 42 piston end is down-set, cylinder body bottom two pieces
On the symmetrical centre position being vertically fixedly mounted on underframe 1 fore-and-aft direction, its piston end end is provided with support base；Control
Valve group 43 is arranged on underframe 1 or added 3, and the output of control valve group 43 supports liquid by fluid pressure line with top positioning respectively
Cylinder pressure 41 and bottom positioning supporting cylinder 42 connect.
This coal mine down-hole tunnel base plate anchor rod drilling device is placed on and need to incite somebody to action after carrying out on the roadway floor of base plate boring
The input of control valve group 43 is connected with working face hydraulic power unit by fluid pressure line, and then operational control valve group 43 makes top fixed
Position supporting cylinder 41 and bottom positioning supporting cylinder 42 stretch out respectively, the support footstock top of top positioning supporting cylinder 41
Lean against on top board, the support base of bottom positioning supporting cylinder 42 acts against and makes underframe 1 at back and base plate on base plate
Between form rigid support, then unclamp before and after's positioning and locking nut 23 and left and right positioning and locking nut 25, mobile body 21 to
Positioning and locking nut 23, then mobile drill installing rack 26 to left and right directions before and after locking after needing the position of boring on fore-and-aft direction
On locking left and right positioning and locking nut 25 behind the position that need to hole, rig 27, i.e. just to bore position, starts rig 27 and bores
Hole, the setting of cylindricality piston shoes can realize on fore-and-aft direction or left and right directions non-fully the roadway floor of level hang down
Straight boring, during boring, the drilling rod of rig 27 is pierced the reaction force that base plate produces and is acted on by rig installing rack the 26th, body 21
In underframe 1, active force is directly acted on by underframe 1 by top positioning supporting cylinder 41 and bottom positioning supporting cylinder 42
Back and base plate；It is drilled first Kong Houke and directly unclamp before and after's positioning and locking nut 23 or left and right positioning and locking nut 25
Carry out the bore position on fore-and-aft direction or left and right directions and adjust the drilling operation realizing a row or row.
In order to mitigate the overall weight of whole device in order to move, scheme as a further improvement on the present invention, described
Underframe 1 and added 3 be all frame structure.
In order to increase the integrated support intensity of this equipment, scheme as a further improvement on the present invention, described underframe 1
And/or the frame structure two sides of added 3 are provided with supporting rib stiffener arranged in a crossed manner.
In order to realize not using additional means quickly to screw or unclamp positioning and locking nut 23 and left and right positioning before and after positioning
Locking nut 25, as a further improvement on the present invention scheme, positioning and locking nut 23 and left and right positioning before and after described positioning
It is radially provided with handle, before and after can realizing manually quickly screwing or unclamping positioning by rotary handle on locking nut 25
Positioning and locking nut 23 and left and right positioning and locking nut 25.
In order to prevent before and after the positioning after screwing positioning and locking nut 23 and left and right positioning and locking nut 25 at boring procedure
Middle loosen because of vibration, scheme as a further improvement on the present invention, described before and after positioning and locking nut 23 inner face with
Between the lateral surface of the guide groove 22 and outside of inner face and left and right guide groove 24 of left and right positioning and locking nut 25 front and back
Between face, ecto-entad is sequentially provided with spring washer and plain washer.
This coal mine down-hole tunnel base plate anchor rod drilling device is owing to being provided with added 3 being arranged on underframe 1, and top positioning is propped up
Support hydraulic cylinder 41 and control valve group 43 are arranged on added 3, and bottom positioning supporting cylinder 42 is arranged on underframe 1, therefore
Being manipulated by valve group 43 makes top positioning supporting cylinder 41 and bottom positioning supporting cylinder 42 stretch out respectively, and top is fixed
The support footstock of position supporting cylinder 41 acts against on top board, the support base of bottom positioning supporting cylinder 42 acts against base plate
On make underframe 1 form stable rigid support between back and base plate, during boring, the drilling rod of rig 27 pierces base plate
The reaction force producing acts on underframe 1 by rig installing rack the 26th, body 21, and active force is propped up by underframe 1 by top positioning
Support hydraulic cylinder 41 and bottom positioning supporting cylinder 42 directly act on back and base plate, therefore do not need at rig 27
It is supported on back with pin or reverse air leg to provide reverse holding power above drilling rod；Before being provided with due to workpiece 2
Rear guide groove the 22nd, front and back positioning and locking nut the 23rd, left and right guide groove the 24th, left and right positioning and locking nut 25, therefore by this coal
Can realize after roadway floor anchor rod drilling device is had good positioning under mine that pinpointing a position can complete multiple rows of or multiple row hole
Operation, i.e. can realize all full lines in front and back's guide groove 22 and left and right guide groove 24 stroke range for the rig 27 and whole
The bore position of row carries out positioning boring；Owing between body 21 and underframe 1, being equipped with between rig installing rack 26 and body 21
Cylindricality piston shoes, therefore can realize on fore-and-aft direction or left and right directions non-fully the roadway floor of level carry out vertical drilling；
This coal mine down-hole tunnel base plate anchor rod drilling device simple in construction, easily operated control, can carry out anchor pole peace after completing boring
Dress, speed, the installation effectiveness of boring and installation anchor pole are high, are adapted to the requirement of Quick Road-Made, are particularly well-suited to tunnel
The Quick mounting anchor rod of floor bolting is used when pucking is administered.
Claims (5)
1. a coal mine down-hole tunnel base plate anchor rod drilling device, including rig (27), it is characterised in that also include underframe (1),
Workpiece (2), added (3) and device positioning element (4)；
Described added (3) are fixedly mounted on underframe (1), and underframe (1) bottom is provided with roller；
Described workpiece (2) is arranged on underframe (1), including body (21), front and back guide groove (22), front and back positioning lock
Jack panel (23), left and right guide groove (24), left and right positioning and locking nut (25), rig installing rack (26) and rig (27)；This
Body (21) is rectangle frame structure, and both ends of the surface are located at fore-and-aft direction are arranged on by being positioned at the cylindricality slip shoe frame of end face central authorities around
Before and after on underframe (1) medial surface on guide groove (22), if the end of threaded cylindricality piston shoes passes through guide groove front and back
(22)；Front and back positioning and locking nut (23) coordinates with the end thread of cylindricality piston shoes and is pressed on outside before and after's guide groove (22)
On side；Before and after rig installing rack (26), both ends of the surface are located at left and right directions by cylindricality slip shoe frame and are arranged on body (21) inner side
On left and right guide groove (24) on face, if the end of threaded cylindricality piston shoes passes through left and right guide groove (24)；Left and right is fixed
Position locking nut (25) coordinates with the end thread of cylindricality piston shoes and is pressed on the lateral surface of left and right guide groove (24)；Described
Rig (27) be vertically arranged and be arranged on rig installing rack (26)；
Described device positioning element (4) include top positioning supporting cylinder (41), bottom positioning supporting cylinder (42) and
Control valve group (43)；Top positioning supporting cylinder (41) is set to two pieces, and two pieces top positions supporting cylinder (41) piston
End sets up, on the symmetrical centre position being vertically fixedly mounted on added (3) fore-and-aft direction of cylinder body, its piston end end
It is provided with support footstock；Bottom positioning supporting cylinder (42) is set to two pieces, positions supporting cylinder (42) piston bottom two pieces
Hold on down-set, the symmetrical centre position being vertically fixedly mounted on underframe (1) fore-and-aft direction of cylinder body, its piston end end
It is provided with support base；Control valve group (43) is arranged on underframe (1) or added (3), and the output of control valve group (43) leads to respectively
Cross fluid pressure line to be connected with top positioning supporting cylinder (41) and bottom positioning supporting cylinder (42).
2. coal mine down-hole tunnel base plate anchor rod drilling device according to claim 1, it is characterised in that described underframe
And added (3) are all frame structures (1).
3. coal mine down-hole tunnel base plate anchor rod drilling device according to claim 2, it is characterised in that described underframe
And/or the frame structure two sides of added (3) are provided with supporting rib stiffener arranged in a crossed manner (1).
4. the steady boring device of underground coal mine base plate anchor pole according to claim 1 or 2 or 3, it is characterised in that described positioning
It front and back is radially provided with handle on positioning and locking nut (23) and left and right positioning and locking nut (25).
5. the steady boring device of underground coal mine base plate anchor pole according to claim 1 or 2 or 3, it is characterised in that before and after described
Between the lateral surface of the inner face of positioning and locking nut (23) and front and back guide groove (22) and left and right positioning and locking nut (25)
Inner face and the lateral surface of left and right guide groove (24) between ecto-entad be sequentially provided with spring washer and plain washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610620385.0A CN106150373A (en) | 2016-07-30 | 2016-07-30 | A kind of coal mine down-hole tunnel base plate anchor rod drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610620385.0A CN106150373A (en) | 2016-07-30 | 2016-07-30 | A kind of coal mine down-hole tunnel base plate anchor rod drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106150373A true CN106150373A (en) | 2016-11-23 |
Family
ID=57328179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610620385.0A Pending CN106150373A (en) | 2016-07-30 | 2016-07-30 | A kind of coal mine down-hole tunnel base plate anchor rod drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106150373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401402A (en) * | 2017-09-05 | 2017-11-28 | 中国矿业大学(北京) | A kind of mash gas pumping drilling stability fixed point monitoring attending device and method |
-
2016
- 2016-07-30 CN CN201610620385.0A patent/CN106150373A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401402A (en) * | 2017-09-05 | 2017-11-28 | 中国矿业大学(北京) | A kind of mash gas pumping drilling stability fixed point monitoring attending device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
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| WD01 | Invention patent application deemed withdrawn after publication |