CN201363096Y - Drilling tool for coal pit fire extinguishing - Google Patents
Drilling tool for coal pit fire extinguishing Download PDFInfo
- Publication number
- CN201363096Y CN201363096Y CNU2009200359555U CN200920035955U CN201363096Y CN 201363096 Y CN201363096 Y CN 201363096Y CN U2009200359555 U CNU2009200359555 U CN U2009200359555U CN 200920035955 U CN200920035955 U CN 200920035955U CN 201363096 Y CN201363096 Y CN 201363096Y
- Authority
- CN
- China
- Prior art keywords
- drill
- drill bit
- hollow
- steel pipe
- seamless steel
- 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.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 239000003245 coal Substances 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000004079 fireproofing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
A drilling tool for coal pit fire extinguishing comprise a threaded drill bit and a drill rod, wherein the drill bit consists of a hollow seamless steel pipe and a hollow triangular plate with saw teeth welded at the top part of the hollow seamless steel pipe, the semi-closed through hole formed at the top end of the drill bit is the pouring mouth for extinguishing materials, and the drill rod is a hollow seamless steel pipe with two threaded ends. For the drilling tool, a rock electric drill or a coal electric drill is adopted as a driving device to connect the drill rod to drill, when an end hole is drilled, the hollow drill rod is left in the drill hole to be a delivery pipe for pouring extinguishing materials; because the drill hole is sealed without recovering the drill bit and the drill rod, the rod drawing time and the process of laying pouring pipe for extinguishing materials are saved, which reduces the fire extinguishing and drilling time to a great degree, and the utility model is particularly suitable for the fast extinguishing when the coal pit is on fire.
Description
Technical field
The utility model relates to a kind of drilling tool, the rapid constructing method of fire extinguishing boring under especially a kind of coal mine.
Background technology
Current, the fire that the colliery spontaneous combustion causes remains one of major casualty under the coal mine, and the safety of coal miner, the destruction of resource and the sustainable development in colliery are brought great harm.The main method that current coal-mine fire is administered is the anti-fire extinguishing of grouting, gel-filled and annotate three-phase froth etc., and the enforcement of these measures all will be carried out drilling construction to the fire district, makes fireproofing extinguishing materials can reach predetermined fire district rapidly, thus the performance maximum effect.Traditional job practices of drilling is to adopt common drilling rod to hole, and retreats out drilling rod when boring puts in place, inserts the extinguish material intrusion pipe again, carries out slip casting then.This method is long man-hour, and is difficult to arrive desired location when inserting the extinguish material intrusion pipe, thereby has delayed the fire extinguishing drilling construction time.In addition, also the hole phenomenon of collapsing can occur in the work progress, be unfavorable for the actual needs of on-the-spot quick extinguishing.
Summary of the invention
The purpose of this utility model is the weak point that overcomes in the prior art, provides a kind of simple in structure, and easy construction is time saving and energy saving, the drilling tool of fire extinguishing boring under the coal mine in the hole of avoiding occurring collapsing.
The technical solution of the utility model, comprise drill bit and drilling rod, described drill bit is connected with drill rod thread, described drill bit is made of one section hollow seamless steel pipe and the triangular plate that has sawtooth that is welded on the hollow seamless steel pipe of this section top, is provided with the internal thread that matches with the drilling rod head in the afterbody hole of the hollow seamless steel pipe of this section; Described drilling rod is hollow seamless steel pipe, and the head of drilling rod is provided with the external screw thread that matches with drill bit, and afterbody is provided with the internal thread of next rod member of continued access.
Described drilling rod is by thickness of pipe wall 8～10mm, and caliber is that the high-strength seamless steel pipe of 40～60mm is made; Described drill bit hollow triangle plate is processed with sawtooth on relative two inclined-planes, and the wall thickness of triangular plate is about 10～12mm, and the number of sawtooth is about 6～10.
Beneficial effect: the drill bit that triangular plate by having sawtooth and hollow tube constitute is connected the drilling rod of hollow seamless steel pipe, after treating that boring proceeds to whole hole site, directly the seamless drilling rod of hollow is stayed the interior carrier pipe as the perfusion fireproofing extinguishing materials of boring, the semiclosed through hole of drill end is the perfusing hole of extinguish material.Owing to need not reclaim drill bit, drilling rod, directly carry out drilling and sealing, saved and moved back the bar time, also saved the working procedure of time extinguish material intrusion pipe, significantly reduced the fire extinguishing drilling construction time.Through field experiment, fire extinguishing drilling construction cycle≤1h for hole depth 15m, aperture Φ 50mm, it only is 1/3 of conventional method, become porosity to improve 20% than common drilling construction technology, roof broken zone boring success rate even improve 50%, and the collapse defective in hole of the common technology of drilling, the quick improvement work when being highly suitable for the colliery breaking out of fire have been overcome.Its job practices is simple, and is easy to operate, time saving and energy saving, has practicality widely.
Description of drawings
Fig. 1 is a drilling tool structure front view of the present utility model.
Fig. 2 is the utility model structure side view.
Among the figure: 1-drill bit, 2-drilling rod.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
As shown in the figure, the drilling tool of fire extinguishing boring is made of drill bit 1 that is threaded and drilling rod 2, drill bit 1 is made of one section hollow seamless steel pipe and the hollow triangle plate that is welded on the hollow seamless steel pipe of this section top, the hollow triangle plate is processed with sawtooth on relative two inclined-planes, the wall thickness of triangular plate is about 10～12mm, and the number of sawtooth is about 6～10; This hollow triangle plate two bottom sides is fastened on the external diameter of hollow seamless steel pipe, makes the front portion of drill bit 1 leave the through hole that is semi-closed state, as the delivery outlet of slurry.Be provided with the internal thread that matches with drilling rod 2 heads in the afterbody hole of the hollow seamless steel pipe of drill bit 1; Drilling rod 2 is for carrying the hollow seamless steel pipe of extinguish material, and the head of drilling rod 2 is provided with the external screw thread that matches with drill bit 1, and afterbody is provided with the internal thread of next rod member of continued access.Drilling rod 2 is by thickness of pipe wall 8～10mm, and caliber is that the high-strength seamless steel pipe of 40～60mm is made.
The course of work: after drilling rod 2 and drill bit 1 thread set be integrated, become in the middle of both a complete channels as after sprocket holes of extinguish material, the delivery port of drill bit 1 front end treats to give over to after the Completion of Drilling Hole perfusing hole of grouting agent; Then the drilling rod 2 that connects is linked to each other with electric rock drill or electric coal drill and implement to drill to the ignition zone, drilling depth needs the continued access drilling rod 2 while creeping into by fire extinguishing, after treating that boring proceeds to desired location, stop to creep into, with drilling rod and electric rock drill or electric coal drill removal, as the extinguish material intrusion pipe, directly the extinguish material feed pipe for mortar is connected with the drilling rod 2 of hollow seamless steel pipe in drilling rod 2 is stayed and holed, the slurry of will putting out a fire is fast delivered to the fire extinguishing zone.
Claims (3)
1, the drilling tool of fire extinguishing boring under a kind of coal mine, comprise drill bit (1) and drilling rod (2), it is characterized in that: described drill bit (1) is threaded with drilling rod (2), described drill bit (1) is made of one section hollow seamless steel pipe and the hollow triangle plate that has sawtooth that is welded on the hollow seamless steel pipe of this section top, is provided with the internal thread that matches with drilling rod (2) head in the afterbody hole of the hollow seamless steel pipe of this section; Described drilling rod (2) is hollow seamless steel pipe, and the head of drilling rod (2) is provided with the external screw thread that matches with drill bit (1), and afterbody is provided with the internal thread of next rod member of continued access.
2, the drilling tool of fire extinguishing boring under the coal mine as claimed in claim 1, it is characterized in that: described drilling rod (2) is by thickness of pipe wall 8～10mm, and caliber is that the high-strength seamless steel pipe of 40～60mm is made.
3, the drilling tool of fire extinguishing boring under the coal mine as claimed in claim 1 is characterized in that: described drill bit (1) hollow triangle plate is processed with sawtooth on relative two inclined-planes, and the wall thickness of triangular plate is about 10～12mm, and the number of sawtooth is about 6～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200359555U CN201363096Y (en) | 2009-03-07 | 2009-03-07 | Drilling tool for coal pit fire extinguishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200359555U CN201363096Y (en) | 2009-03-07 | 2009-03-07 | Drilling tool for coal pit fire extinguishing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363096Y true CN201363096Y (en) | 2009-12-16 |
Family
ID=41473759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200359555U Expired - Fee Related CN201363096Y (en) | 2009-03-07 | 2009-03-07 | Drilling tool for coal pit fire extinguishing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363096Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437531A (en) * | 2016-08-26 | 2017-02-22 | 中国矿业大学 | Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine |
-
2009
- 2009-03-07 CN CNU2009200359555U patent/CN201363096Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437531A (en) * | 2016-08-26 | 2017-02-22 | 中国矿业大学 | Disposable telescopic drilling tool used for fire preventing and extinguishing grouting in underground coal mine |
| CN106437531B (en) * | 2016-08-26 | 2018-10-30 | 中国矿业大学 | A kind of disposable Telescopic drilling tool for underground coal mine fire extinguishing slip casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20130307 |