CN106437522A - Deep-level and high-ground-stress coal uncovering and drilling construction device and method - Google Patents
Deep-level and high-ground-stress coal uncovering and drilling construction device and method Download PDFInfo
- Publication number
- CN106437522A CN106437522A CN201611089094.XA CN201611089094A CN106437522A CN 106437522 A CN106437522 A CN 106437522A CN 201611089094 A CN201611089094 A CN 201611089094A CN 106437522 A CN106437522 A CN 106437522A
- Authority
- CN
- China
- Prior art keywords
- hole
- drill bit
- drilling
- drilling construction
- deep level
- 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
Links
Classifications
-
- 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
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Abstract
The invention belongs to the technical field of coal mine safety production and construction and particularly relates to a deep-level and high-ground-stress coal uncovering and drilling construction device and method. The device comprises a drill bit, wherein a through hole is formed in the center of the drill bit, a movable door capable of opening or closing a front-end hole opening of the through hole is arranged at the front end of the drill bit, the rear end of the drill bit is connected with a drill machine through a hollow drill rod, a central hole of the drill rod is communicated with the through hole of the drill bit to form a channel for a casing to penetrate through. The deep-level and high-ground-stress coal uncovering and drilling construction device utilizes a whole-process casing hole-protecting process, a casing is put down in place before the drill rod is pulled out, drill hole collapse caused by rock breakage is very well prevented, and the construction efficiency of pumping and drainage drilling and a pumping and drainage effect are greatly improved.
Description
Technical field
The invention belongs to Safety of Coal Mine Production technical field of construction is and in particular to a kind of deep level, high-ground stress exposed coal bore
Hole constructing device and method.
Background technology
The construction of exposed coal boring is mainly used in the pre- coal-bed gas taken out in exposed coal region, makes the coal seam in the exposed coal work of tunnel
Outburst dangerous level is preferably minimized.For the coal bed gas extraction in exposed coal region be prevention exposed coal during Gas Outburst important
Work, the quality of drilling construction quality, directly influence exposed coal extracting result.During drilling construction, early-stage preparations are not enough；
In work progress, the new problem running into can not be successfully managed, whole drilling construction all can be made can not to ensure in quality, in work
Phase causes to delay.Carrying out deep level, during high-ground stress exposed coal drilling construction, because rock pressure is larger, be easily broken,
When being holed using general technology, drill bit is just easy to collapse Yi Dan extraction hole wall, leads to not normal down tube, sometimes often anti-
Sleeve pipe decentralization could smoothly be put in place by multiple repeatedly boring, has a strong impact on production and construction efficiency.
Content of the invention
It is an object of the invention to provide a kind of be prevented from deep level, the high-ground stress exposed coal that borehole wall during down tube collapses
Drilling construction device and method.
For achieving the above object, the invention provides technical scheme below：
A kind of deep level, high-ground stress exposed coal drilling construction device, including drill bit, described bit central has a through hole,
Described chisel edge is provided with the dodge gate that can make through hole front end aperture closure or openness；Hollow drill is passed through in described drill bit rear end
It is connected with rig, the centre bore of described drilling rod is connected with the through hole of drill bit, constitute the passage passing through for sleeve pipe.
Preferably, along the circumferential direction uniform intervals are provided with multiple brill teeth to chisel edge；One end of described dodge gate and brill
The annular end face of head is hinged, and the front end of described dodge gate also is provided with boring tooth.
Preferably, described dodge gate is rod-like structure, and the annular end face of chisel edge is provided with two symmetrical grooves, lives
The two ends of dynamic door are respectively placed in two grooves, and wherein one end of dodge gate is side walls hinged with groove, the other end and groove side
It is provided with positioning hoodle between wall.
Preferably, the outer ring surface of described drilling rod is provided with helical ridge.
Preferably, the annular sidewall of described drill bit along the circumferential direction offers multiple water injection holes.
A kind of deep level, high-ground stress exposed coal drilling construction method, including：
Water supply, air feed, draining, exhaust pipeline is laid in tunnel or pit shaft；
Drill bit is fixedly connected with drilling rod, and drilling rod is fixed with drill spindle；
Start rig, start to hole along predetermined direction, drill bit persistently feeds, until penetrating whole coal seam and extending forward one
Segment distance；
Sleeve pipe is penetrated the centre bore of drilling rod, the dodge gate on drill bit is backed down by sleeve pipe front end, and passes from chisel edge；
After sleeve pipe front end reaches bottom hole, retaining sleeve is motionless, by drilling rod together with one piece of extraction of drill bit, so that sleeve pipe is stayed in boring to hole wall
Carry out supporting；
Drainage tube is set at drilling orifice, and drainage tube is enclosed within jacket exterior, and drainage tube upper end is connected with air pump, extraction
Upper and lower two elastic sealing of hole capsules are set between the outer wall of pipe and the hole wall of boring, and to two elastic sealing of hole capsules and two elasticity
Space between sealing of hole capsule adopts grout pouring to fill.
Preferably, after boring terminates, before sleeve pipe decentralization, water optionally can be carried out to coal seam according to the ventilative degree in coal seam
Defeat and split anti-reflection, concrete grammar is：By the centre bore of drilling rod and high service pipeline connection, sustained water injection is carried out to coal seam, directly
To reaching predetermined pressure, and after the time of pressurize one end, carry out draining；Described drainage procedure is：It is inserted into high-pressure air hose to boring,
Using blast, the hydrops in holing are discharged.
Preferably, boring hole depth crosses 10～15 meters of coal seam.
Preferably, described water injection pressure is 15～20MPa.
The method have technical effect that：The present invention utilizes whole sleeve pipe guard aperture technique, before drilling rod is extracted out, just by sleeve pipe
Decentralization puts in place, prevents the boring that crushing rock formation leads to collapse well, substantially increases the efficiency of construction of pump drainage boring and takes out
Row's effect.
Brief description
Fig. 1 is the exposed coal hole structure sectional view that embodiments of the invention provide；
Fig. 2 is the drill bit drilling state stereogram that embodiments of the invention provide；
Fig. 3 is the drill bit down tube state stereogram that embodiments of the invention provide.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1
As Figure 1-3, a kind of deep level, high-ground stress exposed coal drilling construction device, including drill bit 10, described drill bit 10
Center has a through hole, and described drill bit 10 front end is provided with the dodge gate 12 that can make through hole front end aperture closure or openness；Described
Drill bit 10 rear end is connected with rig by hollow drill 11, and the centre bore of described drilling rod 11 is connected with the through hole of drill bit 10, constitutes
The passage passing through for sleeve pipe 2.
Preferably, along the circumferential direction uniform intervals are provided with multiple brill teeth for drill bit 10 front end；One end of described dodge gate 12
Hinged with the annular end face of drill bit 10, the front end of described dodge gate 12 also is provided with boring tooth 121.
Preferably, described dodge gate 12 is rod-like structure, the annular end face of drill bit 10 front end be provided with two symmetrical recessed
Groove, the two ends of dodge gate 12 are respectively placed in two grooves, wherein one end of dodge gate 12 and side walls hinged, the other end of groove
It is provided with positioning hoodle 122 and recess sidewall between.
Preferably, the outer ring surface of described drilling rod 11 is provided with helical ridge 111.
Preferably, the annular sidewall of described drill bit 10 along the circumferential direction offers multiple water injection holes 101.
Embodiment 2
As shown in figure 1, a kind of deep level, high-ground stress exposed coal drilling construction method, bored using described constructing device
Construct in hole, including：
Water supply, air feed, draining, exhaust pipeline is laid in tunnel or pit shaft；
Drill bit 10 is fixedly connected with drilling rod 11, and drilling rod 11 and drill spindle are fixed；
Start rig, start to hole along predetermined direction, drill bit 10 persistently feeds, until penetrating whole coal seam and extending forward
One segment distance, boring hole depth crosses 10～15 meters of coal seam, preferably 12 meters of the present embodiment.
Sleeve pipe 2 is penetrated the centre bore of drilling rod 11, the dodge gate 12 on drill bit 10 is backed down by sleeve pipe 2 front end, and from drill bit
10 front ends pass；After sleeve pipe 2 front end reaches bottom hole, retaining sleeve 2 is motionless, by drilling rod 11 together with 10 1 pieces of extractions of drill bit, makes set
Pipe 2 is stayed in boring and is carried out supporting to hole wall；
Drainage tube is set at drilling orifice, drainage tube is enclosed within outside sleeve pipe 2, and drainage tube upper end is connected with air pump, takes out
Adopt and upper and lower two elastic sealing of hole capsules are set between the outer wall of pipe and the hole wall of boring, and to two elastic sealing of hole capsules and two bullets
Property sealing of hole capsule between space adopt grout pouring fill.
Preferably, after boring terminates, before sleeve pipe 2 decentralization, optionally coal seam can be carried out according to the ventilative degree in coal seam
Hydraulic fracturing anti-reflection, concrete grammar is：By the centre bore of drilling rod 11 and high service pipeline connection, coal seam is persistently noted
Carry out draining after water, until it reaches predetermined pressure, and pressurize one end time；Described drainage procedure is：It is inserted into high pressure to boring
Hydrops in holing are discharged by airduct using blast.Described water injection pressure is 15～20MPa, the preferred 17MPa of the present embodiment.
Sleeve pipe 2 decentralization, using whole sleeve pipe guard aperture technique, before drilling rod 11 is extracted out, is just put in place, well in advance by the present invention
Prevent that the boring that crushing rock formation leads to is collapsed, substantially increased efficiency of construction and the pump drainage effect of pump drainage boring.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of deep level, high-ground stress exposed coal drilling construction device it is characterised in that：Including drill bit, described bit central tool
There is a through hole, described chisel edge is provided with the dodge gate that can make through hole front end aperture closure or openness；Described drill bit rear end leads to
Cross hollow drill to be connected with rig, the centre bore of described drilling rod is connected with the through hole of drill bit, constitute the passage passing through for sleeve pipe.
2. deep level according to claim 1, high-ground stress exposed coal drilling construction device it is characterised in that：Chisel edge
Along the circumferential direction uniform intervals are provided with multiple brill teeth；One end of described dodge gate is hinged with the annular end face of drill bit, described work
The front end of dynamic door also is provided with boring tooth.
3. deep level according to claim 2, high-ground stress exposed coal drilling construction device it is characterised in that：Described activity
Door is rod-like structure, and the annular end face of chisel edge is provided with two symmetrical grooves, and the two ends of dodge gate are respectively placed in two
In groove, wherein one end of dodge gate is side walls hinged with groove, is provided with positioning hoodle between the other end and recess sidewall.
4. deep level according to claim 1, high-ground stress exposed coal drilling construction device it is characterised in that：Described drilling rod
Outer ring surface be provided with helical ridge.
5. deep level according to claim 1, high-ground stress exposed coal drilling construction device it is characterised in that：Described drill bit
Annular sidewall on along the circumferential direction offer multiple water injection holes.
6. a kind of deep level, high-ground stress exposed coal drilling construction method it is characterised in that：Using claim 1 to 5 any one
Described constructing device carries out drilling construction, including：
Water supply, air feed, draining, exhaust pipeline is laid in tunnel or pit shaft；
Drill bit is fixedly connected with drilling rod, and drilling rod is fixed with drill spindle；
Start rig, start to hole along predetermined direction, drill bit persistently feeds, until penetrate whole coal seam and forward one section of extension away from
From；
Sleeve pipe is penetrated the centre bore of drilling rod, the dodge gate on drill bit is backed down by sleeve pipe front end, and passes from chisel edge；Sleeve pipe
After front end reaches bottom hole, retaining sleeve is motionless, by drilling rod together with one piece of extraction of drill bit, so that sleeve pipe is stayed in boring and hole wall is carried out
Supporting；
Drainage tube is set at drilling orifice, and drainage tube is enclosed within jacket exterior, and drainage tube upper end is connected with air pump, drainage tube
Upper and lower two elastic sealing of hole capsules are set between outer wall and the hole wall of boring, and to two elastic sealing of hole capsules and two elastic sealing of holes
Space between capsule adopts grout pouring to fill.
7. deep level according to claim 6, high-ground stress exposed coal drilling construction method it is characterised in that：In boring knot
Before Shu Hou, sleeve pipe decentralization, hydraulic fracturing anti-reflection optionally can be carried out to coal seam according to the ventilative degree in coal seam, concrete grammar is：
By the centre bore of drilling rod and high service pipeline connection, sustained water injection is carried out to coal seam, until it reaches predetermined pressure, and pressurize one
Carry out draining after the time of end；Described drainage procedure is：Be inserted into high-pressure air hose to boring, using blast will hole in hydrops row
Go out.
8. deep level according to claim 7, high-ground stress exposed coal drilling construction method it is characterised in that：Boring hole depth
Cross 10～15 meters of coal seam.
9. deep level according to claim 7, high-ground stress exposed coal drilling construction method it is characterised in that：Described water filling
Pressure is 15～20MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089094.XA CN106437522A (en) | 2016-11-30 | 2016-11-30 | Deep-level and high-ground-stress coal uncovering and drilling construction device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611089094.XA CN106437522A (en) | 2016-11-30 | 2016-11-30 | Deep-level and high-ground-stress coal uncovering and drilling construction device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437522A true CN106437522A (en) | 2017-02-22 |
Family
ID=58222848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611089094.XA Pending CN106437522A (en) | 2016-11-30 | 2016-11-30 | Deep-level and high-ground-stress coal uncovering and drilling construction device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437522A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197497A (en) * | 2020-03-04 | 2020-05-26 | 淮南矿业(集团)有限责任公司 | Rock cross-cut coal uncovering high-pressure hydraulic punching comprehensive permeability increasing method |
| CN113216927A (en) * | 2021-03-16 | 2021-08-06 | 中南大学 | Test device for simulating drilling of deep high-geostress stratum |
| CN113236127A (en) * | 2021-05-13 | 2021-08-10 | 中煤科工集团西安研究院有限公司 | Construction device and method for hydraulic punching while drilling and sieve tube hole protection |
| CN114109344A (en) * | 2021-11-29 | 2022-03-01 | 扎赉诺尔煤业有限责任公司 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237222A (en) * | 1996-11-12 | 1999-12-01 | 泰西莫开发销售有限公司 | Process and device for simultaneously drilling and lining hole |
| CN203701968U (en) * | 2013-10-17 | 2014-07-09 | 河南理工大学 | Hole protection type drilling device for soft coal seamdrilling |
| CA2902972A1 (en) * | 2013-03-14 | 2014-09-18 | Mitsubishi Materials Corporation | Drilling tool |
| CN205503011U (en) * | 2016-01-11 | 2016-08-24 | 河南理工大学 | Coalbed gas takes out and adopts dowelling jig and protect and take out integrated device |
| CN105909173A (en) * | 2016-05-23 | 2016-08-31 | 西南石油大学 | One-time hole forming directional penetrating construction method and device |
| CN206246061U (en) * | 2016-11-30 | 2017-06-13 | 淮南矿业(集团)有限责任公司 | Deep level, high-ground stress exposed coal drilling construction device |
-
2016
- 2016-11-30 CN CN201611089094.XA patent/CN106437522A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237222A (en) * | 1996-11-12 | 1999-12-01 | 泰西莫开发销售有限公司 | Process and device for simultaneously drilling and lining hole |
| CA2902972A1 (en) * | 2013-03-14 | 2014-09-18 | Mitsubishi Materials Corporation | Drilling tool |
| CN203701968U (en) * | 2013-10-17 | 2014-07-09 | 河南理工大学 | Hole protection type drilling device for soft coal seamdrilling |
| CN205503011U (en) * | 2016-01-11 | 2016-08-24 | 河南理工大学 | Coalbed gas takes out and adopts dowelling jig and protect and take out integrated device |
| CN105909173A (en) * | 2016-05-23 | 2016-08-31 | 西南石油大学 | One-time hole forming directional penetrating construction method and device |
| CN206246061U (en) * | 2016-11-30 | 2017-06-13 | 淮南矿业(集团)有限责任公司 | Deep level, high-ground stress exposed coal drilling construction device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197497A (en) * | 2020-03-04 | 2020-05-26 | 淮南矿业(集团)有限责任公司 | Rock cross-cut coal uncovering high-pressure hydraulic punching comprehensive permeability increasing method |
| CN111197497B (en) * | 2020-03-04 | 2022-03-11 | 淮南矿业(集团)有限责任公司 | Rock cross-cut coal uncovering high-pressure hydraulic punching comprehensive permeability increasing method |
| CN113216927A (en) * | 2021-03-16 | 2021-08-06 | 中南大学 | Test device for simulating drilling of deep high-geostress stratum |
| CN113236127A (en) * | 2021-05-13 | 2021-08-10 | 中煤科工集团西安研究院有限公司 | Construction device and method for hydraulic punching while drilling and sieve tube hole protection |
| CN113236127B (en) * | 2021-05-13 | 2024-04-12 | 中煤科工集团西安研究院有限公司 | Hydraulic punching while drilling and screen pipe hole protection construction device and method |
| CN114109344A (en) * | 2021-11-29 | 2022-03-01 | 扎赉诺尔煤业有限责任公司 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
| CN114109344B (en) * | 2021-11-29 | 2023-09-19 | 扎赉诺尔煤业有限责任公司 | Underground coal seam drilling, mining and gasifying integrated mining equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104790951B (en) | Weaken the method and device away from the high-order tight roofs of 100 ~ 350m of coal seam | |
| CN108643877B (en) | Coal mine underground coal seam long drilling staged fracturing permeability-increasing and gas extraction method | |
| CN102926730B (en) | Mining method for support pipe following air liquid spraying and drilling into coal bed gas of radial well | |
| CN104747075B (en) | Anti-collapsing drilling method for grout spraying of soft coal seam | |
| CN102230363B (en) | Device and method for drilling and forming hole in coal rock in structural belt | |
| CN104763368B (en) | Major diameter downhole hammer port seal and its reverse circulation construction technique | |
| CN107401393A (en) | Water pumping gas production integration goaf gas extraction well casing programme and its construction method | |
| CN106437522A (en) | Deep-level and high-ground-stress coal uncovering and drilling construction device and method | |
| CN103195468A (en) | System process for conducting efficient strengthened extraction in surrounding rock | |
| CN105464638A (en) | Coal bed gas well pulse radial drilling and double-pulsating hydrofracturing method | |
| CN101936153A (en) | Method for exploiting coal bed gas by water power spray drilling for releasing pressure | |
| CN106437570A (en) | Drilling type continuous sand blasting device | |
| CN104265357B (en) | Anti-burst method is taken out in a kind of strong prominent coal seam in advance | |
| CN206246061U (en) | Deep level, high-ground stress exposed coal drilling construction device | |
| CN110410053A (en) | Coal mine roof plate pressure relief method based on eyelet supporting | |
| CN106837171A (en) | A kind of compact reservoir radial direction boring means external member | |
| CN109209325A (en) | A method of uncovering coal in vertical shaft is carried out using radial technology | |
| CN204492646U (en) | Bore broken integrated sluicing internal discharging type tunnel drilling tool | |
| CN103821490A (en) | Special ejector with multilevel hydraulic ejecting and staged fracturing | |
| CN103266913B (en) | A kind of gas pumping method | |
| CN110566155A (en) | circulating grouting and hole sealing method for deformation-resistant gas extraction drill hole in mining area | |
| CN102926797A (en) | Drilling, dust discharging and permeability-increasing integrated device for high gas pressure, high geostress and high crushing (three-high) area of coal mine | |
| CN202673167U (en) | Three-arris drill pipe special for coal mine underground gas drainage | |
| CN104481412A (en) | Well drilling device | |
| CN201851095U (en) | Self-rotation jet drilling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
|
| RJ01 | Rejection of invention patent application after publication |