CN207177957U - A kind of anchor rod system for being used for gas pumping and hydrofracturing - Google Patents
A kind of anchor rod system for being used for gas pumping and hydrofracturing Download PDFInfo
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- CN207177957U CN207177957U CN201721084145.XU CN201721084145U CN207177957U CN 207177957 U CN207177957 U CN 207177957U CN 201721084145 U CN201721084145 U CN 201721084145U CN 207177957 U CN207177957 U CN 207177957U
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- Prior art keywords
- gas
- gas pumping
- hollow bolt
- hydrofracturing
- pressure pipe
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Abstract
The utility model discloses a kind of for gas pumping and the anchor rod system of hydrofracturing.Anchor rod system of the present utility model includes hollow bolt, back-up ring, closing locking device, gas pumping pressure pipe, hydrofracturing system and gas drainage system etc., hollow bolt includes anchoring section and tensioning section, anchoring section is solid, outside is provided with back-up ring, back-up ring diameter is less than armature boring, is anchoring section solid and the connector of the hollow gas pumping part of tensioning section；Tensioning section connects closing locking device by external screw thread；Connection gas pumping pressure pipe in hollow bolt, its diameter is slightly less than hollow bolt diameter, its upper and lower end parts has screw thread and hollow bolt thread connection, and hypomere portion is provided with gas bearing capacity monitor, and the gas pumping pipe that gas pumping pressure pipe couples screw thread and gas drainage system by system connects.The utility model in extraction tunnel can efficient mash gas extraction, sealing of hole rate is high, and gas pumping is intelligent, can the effectively danger such as early warning, forecast gas concentration of local protrusion.
Description
Technical field
The utility model belongs to colliery deep gas pumping and roadway engineering deformation roadway surrounding rock control field, more particularly to
A kind of anchor rod system for being used for gas pumping and hydrofracturing.
Background technology
When exploiting the coal seam with gas in great burying stratum, due to the geologic structure of complexity, gas bearing capacity and gas pressure
Gradually increase deeply with adopting.Thus, Gas Disaster can usually occur, particularly coal and gas prominent disaster is on the rise.《Pacify in colliery
In full code》Expressly provide that the New Built Mine of dangerous seam with potential must first take out to build afterwards, implementation " is first taken out and adopts afterwards, monitors prison
Control, with wind fixed output quota " etc. policy.Gas pumping is a kind of effective governing measure of highly gassy mine production, that is, can guarantee that colliery
Safe and efficient production, the associated resources of exploiting colliery can be also made full use of so as to improve colliery economic benefit.At present for adopting before
The methods of extraction major way has ground drilling to adopt preceding extraction, protected seam adopts preceding extraction and underground layer-through drilling extraction.And
Gas-bearing Coal Seams backplane gas pumping tunnel can arrange extraction tunnel, adaptable strong, easy uniform cloth with maneuverability
The advantages that hole, gas pumping effect are reliable, gas pumping phase length, and extracting result is good was widely used within coal mines in recent years.
However, when arranging gas pumping tunnel, it is stable in order to reach gas pumping effect and tunnel normal use, often
Often need spud in a large amount of gas drillings and corresponding armature boring, construction work amount is quite huge.Also, work as the more open coal of extraction
During gas in body, the defects of extraction borehole sealing of hole closure difference also usually occurs, cause gas pumping efficiency low, it is same with this
When, the abnormal life security for also easily influenceing coal miner of local gas.In addition, when mash gas extraction method is applied in deep bottle coal
When in layer tunnel, and the disaster such as coal mine rock burst and coal and gas prominent easily occurs and has a strong impact on Safety of Coal Mine Production.Mesh
Preceding only a small amount of patent document about gas pumping anchor pole, if Authorization Notice No. is the entitled plastic expandings of the U of CN 201650344
The utility model patent of shell-type gas drainage under suction anchor pole, it uses bottom plastic expansion casing component to improve gas drainage under suction effect, but
Be due to its anchoring section only in anchor trend, it acts on coal mine roadway surrounding rock supporting very small, does not serve substantially, construction
Jewel hole amount is big, and the scope of application is small, and the shortcomings of can not monitoring gas pumping situation in real time is obvious.
The content of the invention
It is low in order to solve above-mentioned gas pumping tunnel great in constructing amount, the gas drainage system efficiency of drilling and intelligence degree
And the safety problems such as bump easily occur for deep coalmine, the utility model provides one kind and is used for gas pumping and hydrofracturing
Anchor rod system, its gas pumping efficiency high, can real-time monitoring alarming local gas is abnormal, applied widely, drilling construction amount
It is small low with production cost, supporting and gas pumping integration are realized, reaches the Expected Results of the efficient extraction of gas.
The utility model solve above-mentioned technical problem technical scheme be：
A kind of anchor rod system for gas pumping and hydrofracturing, including hollow bolt, back-up ring, closing locking device,
Gas pumping pressure pipe, seal washer, pallet, nut, hydrofracturing system and gas drainage system, described hollow bolt bag
Include anchoring section and tensioning section, anchoring section is solid, and outside is provided with back-up ring, and there is a screw inside, anchoring section by back-up ring with it is hollow
Anchor pole connection fastens, and described back-up ring diameter is less than armature boring, is in hollow bolt anchoring section solid part and tensioning section
The connector that empty gas pumping partial threads link together；Tensioning section surfaces externally and internally is equipped with screw thread, and tensioning section passes through outer spiral shell
Line connection closing locking device, described closing locking device is in taper type, screw thread is embedded with inside closing locking device, with tensioning
Section outer surface thread matches；Connection gas pumping pressure pipe, the gas pumping pressure pipe diameter are slightly less than in hollow bolt
Hollow bolt diameter, gas pumping pressure pipe upper and lower end parts have a screw thread and hollow bolt thread connection, under gas pumping pressure pipe
Section portion is provided with gas bearing capacity monitor, and gas pumping pressure pipe is provided with screen pack with outer welding system connection part position and system couples spiral shell
Line；The gas pumping pipe that gas pumping pressure pipe couples screw thread and gas drainage system by system connects.
Further, described hollow bolt is high strength anchor bar, and the equal cloth hole in outer surface, bore dia is larger, and referred to as gas is taken out
Hole is adopted, can be used as hydrofracturing hole.
Further, described closing locking device can move with hollow bolt external screw thread, and inside is provided with leakproof rubber ring.
Further, described gas pumping pressure pipe skeleton inside and outside is provided with the fine and closely woven screen pack of multilayer.
Further, described hydrofracturing system includes water pump, hydraulic pressure pump line and detecting system, and detecting system is by hydraulic pressure
System, segmenting system, orientation system, data acquisition logging system and data handling system composition, realize hydraulic pressure, flow and flow rate
Monitor regulatory function.
Further, described gas drainage system monitors in real time including gas pumping pump, gas pumping pipe, gas pressure
System and gas bearing capacity monitor, have been internally integrated firedamp sensor and corresponding detection, warning circuit and warning lamp and gas contains
Monitor is measured to be overall, gas drainage system is communicated by transmission circuit with ground-based computer, realizes gas monitor and early warning work(
Energy.
The pumping method of the above-mentioned anchor rod system for being used for gas pumping and hydrofracturing, comprises the following steps：
（1）Anchoring section and hollow bolt connection are fastened by back-up ring, then led to closing locking device with hollow bolt
Cross Screw assembly it is good after, resin explosive roll is installed by the mash gas pumping drilling accomplished fluently in extraction tunnel, then anchor hollow
Anchor pole；
（2）The hollow bolt of anchoring is installed into seal washer, pallet and nut, hollow bolt outer end and hydraulic pressure are caused
The hydraulic pressure pump line connection of system is split, progressively applies hydraulic pressure, after locking device to be closed is gradually sealed by hydraulic pressure, starts to apply high pressure
Water fracturing gassy seam；
（3）After the fracturing of coal seam, close hydrofracturing system and remove the hydraulic pressure pump line coupled with anchor pole, outward winding anchor pole spiral shell
Female, pallet, stretches into hollow bolt by gas pumping pressure pipe and is connected and fixed with anchoring section interior threaded bore, according to on-site actual situations
Selection adds sealing material between closing locking device and pallet seal washer, installs spare anchor in pallet, nut fixation again
Club shaft and gas pumping pressure pipe；
（4）After the system connection screw thread of gas pumping pressure pipe outer end is connected with gas pumping pipe screw thread, you can open
Begin to carry out gas pumping and monitoring.
Compared with prior art, the beneficial effects of the utility model are：
1. it is of the present utility model for gas pumping and the anchor rod system of hydrofracturing, used in gas pumping tunnel
Mash gas pumping drilling can be largely reduced, realizes armature boring " hole uses ", realizes suspension roof support and gas pumping integration, both
Deformation of the surrounding rock in tunnel can effectively be suppressed and using stabilization, can also realize the efficient extraction of gas.
2. it is of the present utility model for gas pumping and the anchor rod system combination gas drainage system of hydrofracturing, realize
The advantages that gas pumping automation, roadway construction mechanization and gas monitor intellectuality, can alarm local gas extraction anchor pole
Gas abnormal conditions, engineering time and production cost are greatly reduced while improving security.
3. the anchor rod system of the present utility model for being used for gas pumping and hydrofracturing is being taken out by hydrofracturing system
Rupture early stage Gas-bearing Coal Seams are adopted, effectively prevent gas concentration of local.Screen pack is provided with the connection part of drainage tube, can be by fixed
Phase opens the coal dust that screen pack excludes to be blocked in drainage tube in time.In the coal containing methane gas ore deposit of deep, pass through the utility model anchor
Lever system can disposably carry out a wide range of hydrofracturing, can abundant mash gas extraction, also can effectively prevent the collieries such as bump
Safe disaster.
4. of the present utility model pass through on hollow bolt movably for the anchor rod system of gas pumping and hydrofracturing
Locking device is closed, sealing material can be added between closing locking device and anchor rod pallet board, improve the closure of drilling, can be full
The extraction operation of coal containing methane gas in sufficient all kinds rock stratum.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model anchor rod system support action structural representation.
Fig. 3 is the structural representation of the closing locking device in Fig. 1.
Fig. 4 is the structural representation of the gas pumping pressure pipe in Fig. 1.
Wherein：1- hollow bolts, 2- back-up rings, 3- anchoring section interior threaded bores, 4- gas pumpings hole, 5- closing locking devices,
6- hollow bolt internal and external threads, 7- seal washers, 8- pallets, 9- gas pumping pressure pipes, 10- nuts, the monitoring of 11- gas bearing capacities
Instrument, 12- hydraulic pressure pump lines, 13- hydrofracturing systems, 14- gas pumping pipes, 15- gas drainage systems, 16- systems connection screw thread,
17- drainage tube threaded upper ends, 18- screen packs, 19- drainage tubes lower end screw thread, 20- gas pumping pressure pipes connection place screen pack,
21- closes locking device internal thread, 22- leakproof rubber rings.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As shown in Figure 1-2, it is the anchor rod system overall schematic of the utility model gas pumping and hydrofracturing, including in
Spare anchor bar 1, back-up ring 2, closing locking device 5, gas pumping pressure pipe 9, seal washer 7, pallet 8, nut 10, hydrofracturing system
System 13 and gas drainage system 15.The described anchoring section of hollow bolt 1 is solid, and outside is provided with back-up ring 2, and there is screw 3 inside,
Tensioning section surfaces externally and internally has screw thread 6；The described diameter of back-up ring 2 is less than armature boring, is the anchoring section solid body of hollow bolt 1
Divide the connector being linked together with the hollow gas pumping partial threads of tensioning section；Described closing locking device 5 is in taper type,
Inside is embedded with screw thread 21, is matched with hollow bolt outer surface thread；The described diameter of gas pumping pressure pipe 9 is slightly less than middle spare anchor
There are screw thread and the thread connection of hollow bolt 1 in the diameter of bar 1, the upper end 17 of drainage tube 9 and bottom 19, and hypomere portion contains provided with gas
Amount monitor 11, gas pumping pressure pipe 9 is provided with screen pack 18 with outer welding system connection part position and system couples screw thread 16；It is described
Hydrofracturing system 13 by hydraulic pressure pump line 12 and the outer end thread connection of hollow bolt 1；Described gas drainage system 15 wraps
Include gas pumping pump, gas pumping pipe 14, gas bearing capacity detector 11 and gas pressure real-time monitoring system.
Described hollow bolt 1 is high strength anchor bar, and outer surface is uniform-distribution with the gas pumping hole 4 being relatively large in diameter, gas
Drainage holes 4 can also use as hydrofracturing hole.
Described hydrofracturing system 13 includes water pump, hydraulic pressure pump line 12 and detecting system, detecting system by hydraulic system,
Segmenting system, orientation system, data acquisition logging system and data handling system composition, there are hydraulic pressure, flow and flow rate monitoring to adjust
Save function.
Described gas drainage system 15 includes gas pumping pump, gas pumping pipe 14, gas pressure real-time monitoring system
And gas bearing capacity monitor 11, it has been internally integrated firedamp sensor and corresponding detection, warning circuit and warning lamp and gas bearing capacity
To be overall, gas drainage system 15 is communicated monitor 11 by transmission circuit with ground-based computer, there is gas monitor and early warning work(
Energy.
As shown in figure 3, the described diameter of closing locking device 5 is more than hollow bolt 1, embed outside screw thread 21 and hollow bolt
Thread surface matches, and closing locking device can move with hollow bolt external screw thread 6, and inside is provided with leakproof rubber ring 22.
As shown in figure 4, the described diameter of gas pumping pressure pipe 9 is slightly less than the diameter of hollow bolt 1, the bone of extraction pressure pipe 9
Frame inside and outside is provided with the fine and closely woven screen pack 18 of multilayer.
The pumping method of the above-mentioned anchor rod system for being used for gas pumping and hydrofracturing, comprises the following steps：
（1）Hollow bolt 1 fastens anchoring section and hollow bolt connection by back-up ring 2, will then close locking device 5
With hollow bolt 1 by Screw assembly it is good after, resin explosive roll is installed by the mash gas pumping drilling accomplished fluently in extraction tunnel,
Then anchor hollow anchor pole 1；
（2）The hollow bolt 1 of anchoring is installed into seal washer 7, pallet 8 and nut 10, by the outer end of hollow bolt 1 with
The hydraulic pressure pump line 12 of hydrofracturing system couples, and progressively applies hydraulic pressure, after locking device 5 to be closed is gradually sealed by hydraulic pressure, opens
Begin to implement water under high pressure fracturing gassy seam；
（3）After the fracturing of coal seam, close hydrofracturing system 13 and remove the hydraulic pressure pump line 12 coupled with anchor pole, outward winding anchor pole
Nut 10, pallet 8, gas pumping pressure pipe 9 is stretched into hollow bolt 1 and is connected and fixed with anchoring section interior threaded bore 3, according to scene
Actual conditions selection adds sealing material between closing locking device 5 and pallet seal washer 7, installs pallet 8, nut again
10, then fix the hollow bolt body of rod 1 and gas pumping pressure pipe 9；
（4）By the system of gas pumping pressure pipe outer end connection screw thread 16 and the thread connection of gas pumping pipe 14 it is good after, i.e.,
Gas pumping and monitoring can be proceeded by.
The foregoing is only the utility model preferred embodiment, not thereby limit embodiment of the present utility model and
Protection domain, all equivalent substitutions done with the utility model specification and diagramatic content and obvious change gained
The scheme arrived, should be included in the scope of protection of the utility model.
Claims (6)
1. it is a kind of for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：It is tight including hollow bolt, back-up ring, closing
Locking device, gas pumping pressure pipe, seal washer, pallet, nut, hydrofracturing system and gas drainage system, in described
Spare anchor bar includes anchoring section and tensioning section, and anchoring section is solid, and outside is provided with back-up ring, and there is screw inside, and anchoring section passes through gear
Circle be connected fastening with hollow bolt, and described back-up ring diameter is less than armature boring, for hollow bolt anchoring section solid part and
The connector that the hollow gas pumping partial threads of tensioning section link together；Tensioning section surfaces externally and internally is equipped with screw thread, tensioning section
Closing locking device is connected by external screw thread, described closing locking device is in taper type, and spiral shell is embedded with inside closing locking device
Line, match with tensioning section outer surface thread；Connection gas pumping pressure pipe, the gas pumping pressure pipe are straight in hollow bolt
Footpath is slightly less than hollow bolt diameter, and gas pumping pressure pipe upper and lower end parts have screw thread and hollow bolt thread connection, gas pumping
Pressure pipe hypomere portion is provided with gas bearing capacity monitor, and gas pumping pressure pipe is provided with screen pack with outer welding system connection part position and is
System connection screw thread；The gas pumping pipe that gas pumping pressure pipe couples screw thread and gas drainage system by system connects.
2. it is according to claim 1 for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：Described is hollow
Anchor pole is high strength anchor bar, the uniform gas pumping hole in outer surface.
3. it is according to claim 1 for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：Described closing
Locking device can move with hollow bolt external screw thread, and inside is provided with leakproof rubber ring.
4. it is according to claim 1 for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：Described gas
Extraction pressure pipe skeleton inside and outside is provided with the fine and closely woven screen pack of multilayer.
5. it is according to claim 1 for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：Described hydraulic pressure
Fracturing system includes water pump, hydraulic pressure pump line and detecting system, and detecting system is by hydraulic system, segmenting system, orientation system, data
Acquisition and recording system and data handling system composition, realize hydraulic pressure, flow and flow rate monitoring regulatory function.
6. it is according to claim 1 for gas pumping and the anchor rod system of hydrofracturing, it is characterized in that：Described gas
Extraction system includes gas pumping pump, gas pumping pipe, gas pressure real-time monitoring system and gas bearing capacity monitor, inside collection
Into firedamp sensor and corresponding detection, warning circuit and warning lamp and gas bearing capacity monitor to be overall, gas drainage system
Communicated by transmission circuit with ground-based computer, realize gas monitor and warning function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084145.XU CN207177957U (en) | 2017-08-28 | 2017-08-28 | A kind of anchor rod system for being used for gas pumping and hydrofracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084145.XU CN207177957U (en) | 2017-08-28 | 2017-08-28 | A kind of anchor rod system for being used for gas pumping and hydrofracturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177957U true CN207177957U (en) | 2018-04-03 |
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ID=61739083
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721084145.XU Expired - Fee Related CN207177957U (en) | 2017-08-28 | 2017-08-28 | A kind of anchor rod system for being used for gas pumping and hydrofracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207177957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355253A (en) * | 2017-08-28 | 2017-11-17 | 湖南科技大学 | A kind of anchor rod system and pumping method for being used for gas pumping and hydrofracturing |
-
2017
- 2017-08-28 CN CN201721084145.XU patent/CN207177957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355253A (en) * | 2017-08-28 | 2017-11-17 | 湖南科技大学 | A kind of anchor rod system and pumping method for being used for gas pumping and hydrofracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20200828 |