CN201476709U - Coal mine gas extraction blasting grain - Google Patents
Coal mine gas extraction blasting grain Download PDFInfo
- Publication number
- CN201476709U CN201476709U CN200920173412XU CN200920173412U CN201476709U CN 201476709 U CN201476709 U CN 201476709U CN 200920173412X U CN200920173412X U CN 200920173412XU CN 200920173412 U CN200920173412 U CN 200920173412U CN 201476709 U CN201476709 U CN 201476709U
- Authority
- CN
- China
- Prior art keywords
- coal mine
- explosive
- primacord
- blasting
- plug head
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a coal mine gas extraction blasting grain which is applicable to the loose blasting of the underground deep hole of the coal mine, which consists of a tube body which is provided with explosive allowed for the coal mine and a primacord and a connection choke plug, wherein the explosive allowed for the coal mine and the primacord are installed inside the tube body, the primacord is distributed at the center of the tube body, and the choke plug on two ends of the tube body is provided with a plugging function and a connection function. The coal mine gas extraction blasting grain overcomes the weaknesses that the prior explosive allowed for the coal mine is inconvenient to be installed during the explosion of the deep hole and the blasting conduction is unreliable. The coal mine gas extraction blasting grain which is designed by utilizing the advantages that a hard plastic tube that the strength is high and the blasting conduction of the primacord is reliable can effectively overcome the weakness that the deep hole is not coupled with the pipeline with the explosive, is convenient to operate, has reliable detonation performance and reliable blasting conduction performance, and can effectively improve the ventilation and extraction efficiency of the gas in the coal layer or the rock bed.
Description
Technical field
When the utility model relates in coal seam or rock stratum hole pumping and mining gas, carries out deep hole blasting, so that coal body around the extraction hole or rock mass produce a kind of coal mine gas extraction explosion powder column in crack as near the boring extraction hole.
Background technology
At present, existing emulsion explosive for coal mine, water gel explosives for mine and allowed for use in coal mines expanded explosive, its powder charge shell is paper roll or Polypropylence Sheet, the coal seam blast hole depth greater than the deep hole blasting of 15m in during powder charge, because of powder stick is softer, be difficult to powder stick is delivered to bottom, big gun hole.If in the process of powder charge, the breakage of powder stick shell will be blocked the big gun hole, more difficult powder charge.Even if try every possible means explosive has been packed in the big gun hole, still, if charge diameter is less than blasthole diameter, because of pipe effect, the propagation of explosion length of explosive can not surpass 4m; If explosive is coupling charging in the big gun hole, though overcome pipe effect, the coal bed drilling diameter is greater than 75mm usually, explosive payload is excessive, certainly will cause roof or base plate to break, this will bring bigger difficulty to roof timbering in the follow-up mining process, can't carry out safety work.
Summary of the invention
The purpose of this utility model is exactly the deficiency that overcomes existing permitted explosive for coal mine charge constitution, convenient and the reliable propagation of explosion of primacord overcomes the characteristics of pipe effect in conjunction with the powder charge of flame-retardant and anti-static plastic conduit, charge constitution reasonable in design, make convenient filling, connect reliably the coal mine gas extraction explosion powder column that propagation of explosion is stable.
Design of the present utility model is that the high fire retardant antistatic plastic of the compression strength of explosion powder column usefulness hard is as shell, permitted explosive for coal mine is packed in the explosion powder column, and primacord is in whole explosive, primacord has and detonates and the propagation of explosion effect, the plug at body two ends has shutoff explosive and the fixedly effect of primacord, also has the effect that connects the explosion powder column.
Concrete technical scheme is as follows: a kind of coal mine gas extraction explosion powder column, coaling in the comprising body of ore deposit permitted explosive, it is characterized in that: body is the flame-retardant and anti-static plastic conduit, the body two ends are respectively by upper plug head and lower end cap shutoff, upper plug head is the middle straight-tube shape that is provided with dividing plate, is enclosed within the upper end of body outside the lower end of upper plug head, and the body upper shed is sealed, upper plug head is provided with internal thread on the inwall of dividing plate upper end, the dividing plate center is to having a small cylindrical opening; Lower end cap is enclosed within the lower end of body outward, the body under shed is sealed, its lateral surface is provided with the external screw thread that is complementary with the dividing plate of upper plug head upper end internal thread, lower end cap bottom centre upwards is provided with a small cylindrical opening, other is provided with a primacord in whole explosive, and the two ends of this primacord are inserted in respectively in the small cylindrical opening of upper plug head and lower end cap.
The utility model also is provided with little plug at the primacord two ends, and the external diameter of its internal diameter and primacord is complementary, and its external diameter is complementary with the small cylindrical opening at upper plug head center and the small cylindrical opening at lower end cap center respectively.
Described permitted explosive for coal mine is emulsion explosive for coal mine or water gel explosives for mine or coal mine allowable powdered emulsified explosive.
Characteristics of the present utility model are to select for use fire retardant, antistatic plastic pipe powder charge, two ends respectively to design upper plug head and lower end cap structure that male and female connects, guarantee that butt joint is convenient, reliable between the explosion powder column.Another characteristics of the present utility model are that the little plug at primacord two ends respectively inserts in the small cylindrical opening of the upper plug head of body and lower end cap, have both sealed their aperture, have guaranteed that again primacord between explosion powder column and the explosion powder column is reliably to knot and propagation of explosion.Another characteristics of the present utility model are any permitted explosive for coal mine of no matter packing in the fire retardant, antistatic plastic pipe body, and no matter whether explosive is filled, and the primacord between the explosion powder column can both be guaranteed reliable propagation of explosion, has fundamentally eliminated pipe effect.
If advantage of the present utility model is to select for use the fire retardant, antistatic plastic pipe powder charge, makes permitted explosive for coal mine in big gun hole, coal seam when collapsing the hole, and explosive can not miss-fired by the pressure break generation under the high pressure effect, has guaranteed the blast stability of explosive.Simultaneously, the utility model reasonable in design, with low cost, be convenient to promote the use of.
Description of drawings
Fig. 1 is the structural profile schematic diagram of a kind of embodiment of the utility model.
Fig. 2 is the structural profile schematic diagram of the utility model middle tube body upper plug head.
Fig. 3 is the structural profile schematic diagram of the utility model middle tube body lower end cap.
Fig. 4 is the structural profile schematic diagram of leading the little plug of quick-fried element in the utility model.
The specific embodiment
See also Fig. 1 to shown in Figure 4, the utility model is a kind of coal mine gas extraction explosion powder column, coaling in the comprising body 3 of ore deposit permitted explosive 1 and primacord 2, its middle tube body 3 is the anlistatig plastic tube of retardant surfaces, by upper plug head 4 and lower end cap 5 sealings, upper plug head 4 is enclosed within body 3 upper ends the body upper shed is sealed for the middle straight-tube shape of establishing dividing plate 6 outside the lower end respectively at the body two ends, the inwall of dividing plate 6 upper ends of upper plug head 4 is provided with internal thread, and dividing plate is to having a small cylindrical opening 7; Outer body 3 lower ends that are enclosed within of lower end cap 5 are the sealing of body under shed, and its lateral surface is provided with the external screw thread that the internal thread with upper plug head 4 is complementary, and in addition, lower end cap 5 bottoms upwards are provided with a small cylindrical opening 8; Seal with little plug 9 at the two ends of primacord 2, inserts in upper plug head small sircle hole 7 and the lower end cap small cylindrical opening 8 it is sealed.
Enumerate two examples below and further specify preparation method of the present utility model.Embodiment 1: can implement with reference to accompanying drawing 1,2,3,4
One end of the primacord 2 that two ends are sealed with little plug 9 inserts wall thickness 2mm, in the fire retardant, antistatic plastic pipe 3 of diameter phi 50mm, and after little plug 9 being inserted in the small cylindrical opening 8 of lower end caps 5, with lower end cap 5 lower end of body is sealed, again three grades of emulsion explosive for coal mine 1 are filled, and after the little plug 9 of primacord 2 other ends being inserted in the small cylindrical opening 7 of upper plug heads 4, with upper plug head 4 upper end of body 3 is sealed, promptly make coal mine gas extraction explosion powder column.
Embodiment 2: can implement with reference to accompanying drawing 1,2,3,4
One end of the primacord 2 that two ends are sealed with little plug 9 inserts wall thickness 1.5mm, in the anlistatig plastic tube 3 of the retardant surfaces of diameter phi 40mm, and after little plug 9 being inserted in the small cylindrical opening 8 of lower end caps 5, with lower end cap 5 lower end of body 3 is sealed, again three grades of water gel explosives for mine 1 are filled, and after the little plug 9 of primacord 2 other ends being inserted in the small cylindrical opening 7 of upper plug heads 4, with upper plug head 4 upper end of body 3 is sealed, promptly make coal mine gas extraction explosion powder column.
Claims (3)
1. coal mine gas extraction explosion powder column, coaling in the comprising body (3) of ore deposit permitted explosive (1), it is characterized in that: body (3) is the flame-retardant and anti-static plastic conduit, the body two ends are respectively by upper plug head (4) and lower end cap (5) shutoff, upper plug head (4) is provided with the straight-tube shape of dividing plate (6) for the centre, be enclosed within the upper end of body (3) outside the upper plug head lower end, body (3) upper shed is sealed, upper plug head is provided with internal thread on the inwall of dividing plate (6) upper end, dividing plate (6) center is to having a small cylindrical opening (7); The outer lower end that is enclosed within body (3) of lower end cap (5), the body under shed is sealed, its lateral surface is provided with the external screw thread that is complementary with the dividing plate (6) of upper plug head (4) upper end internal thread, lower end cap bottom centre upwards is provided with a small cylindrical opening (8), other is provided with a primacord (2) in whole explosive (1), and the two ends of this primacord (2) are inserted in respectively in the small cylindrical opening (8) of upper plug head small cylindrical opening (7) and lower end cap.
2. coal mine gas extraction explosion powder column according to claim 1, it is characterized in that: primacord (2) two ends are arranged with little plug (9), the external diameter of the internal diameter of little plug (9) and primacord (2) is complementary, and its external diameter is complementary with the small cylindrical opening (7) at upper plug head center and the small cylindrical opening (8) at lower end cap center respectively.
3. coal mine gas extraction explosion powder column according to claim 1 is characterized in that: described permitted explosive for coal mine is emulsion explosive for coal mine or water gel explosives for mine or coal mine allowable powdered emulsified explosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920173412XU CN201476709U (en) | 2009-08-18 | 2009-08-18 | Coal mine gas extraction blasting grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920173412XU CN201476709U (en) | 2009-08-18 | 2009-08-18 | Coal mine gas extraction blasting grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476709U true CN201476709U (en) | 2010-05-19 |
Family
ID=42412959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920173412XU Expired - Lifetime CN201476709U (en) | 2009-08-18 | 2009-08-18 | Coal mine gas extraction blasting grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201476709U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679825A (en) * | 2011-03-09 | 2012-09-19 | 中铁十一局集团第一工程有限公司 | Blast tube of tunnel |
| CN108278106A (en) * | 2018-01-12 | 2018-07-13 | 西安交通大学 | It is a kind of to be used to generate transmission increasing cumulative stick of controllable shock wave and preparation method thereof |
| CN108332625A (en) * | 2018-02-07 | 2018-07-27 | 长江三峡设备物资有限公司 | A kind of device and its method of ignition for enhancing explosion initiation energy |
| CN111336877A (en) * | 2020-04-17 | 2020-06-26 | 安徽理工大学 | Crack-controllable forced caving blasting method |
-
2009
- 2009-08-18 CN CN200920173412XU patent/CN201476709U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679825A (en) * | 2011-03-09 | 2012-09-19 | 中铁十一局集团第一工程有限公司 | Blast tube of tunnel |
| CN102679825B (en) * | 2011-03-09 | 2015-03-18 | 中铁十一局集团第一工程有限公司 | Blast tube of tunnel |
| CN108278106A (en) * | 2018-01-12 | 2018-07-13 | 西安交通大学 | It is a kind of to be used to generate transmission increasing cumulative stick of controllable shock wave and preparation method thereof |
| CN108278106B (en) * | 2018-01-12 | 2019-04-23 | 西安交通大学 | A kind of transmission increasing cumulative stick and preparation method thereof for generating controllable shock wave |
| CN108332625A (en) * | 2018-02-07 | 2018-07-27 | 长江三峡设备物资有限公司 | A kind of device and its method of ignition for enhancing explosion initiation energy |
| CN111336877A (en) * | 2020-04-17 | 2020-06-26 | 安徽理工大学 | Crack-controllable forced caving blasting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678117B (en) | Directional hydraulic fracturing method based on energizing blasting | |
| CN204988049U (en) | Box -like gathering of tunnel universal set can charging means | |
| CN201476709U (en) | Coal mine gas extraction blasting grain | |
| CN109813191B (en) | Coal and rock deep hole jet flow composite explosion fracturing integrated pipe and application thereof | |
| CN101876520A (en) | Segment pre-blasting technology for steeply dipping hard coal seam roof | |
| CN101363701A (en) | Double-medium decoupling fracture damage blasting control method and auget | |
| CN202836366U (en) | Tamping bar used for deep-hole blasting powder charging | |
| CN103206903A (en) | Hard roof directional pressurized explosion control method | |
| CN103148748A (en) | Bearing pressure adjustable plastic expansion pipe deep hole blasting control method | |
| CN104457459A (en) | Coal mine roof deep hole roof breaking charging structure and detonation method | |
| CN103486910B (en) | A kind of collaborative blast charging structure and loading method thereof | |
| CN106593443A (en) | Carbon dioxide blasting structure and method used for mines, or rock or coal rock | |
| CN108801086A (en) | Deep hole loosens stress pre-released hydraulically blasting method and device | |
| CN107270791A (en) | A kind of vertical shaft for mine explosion well completion method | |
| CN106121644B (en) | The water-filling pressure-bearing unloading pressure by blasting of cellular structure and supporting reinforcement are crosslinked based on drilling in coal and rock plane | |
| CN207635955U (en) | A kind of portable pull Concentrated charge | |
| CN212202047U (en) | Integrated carbon dioxide fracturing equipment | |
| CN103939075B (en) | A kind of fracturing process improving coal mine gas drainage effect and device | |
| CN201738852U (en) | Large-aperture and body-free explosive charge suitable for drilling rod perforation | |
| CN114935290B (en) | Pre-splitting blasting method for cutting single roadway and cutting deep hole on two sides of top-cutting retained roadway | |
| CN103759601B (en) | A kind of underground coal mine deep hole directional blasting tube | |
| CN102927863B (en) | A kind of new method of total rock tunnel blasting construction | |
| CN209763897U (en) | coal rock deep hole jet composite explosion fracturing integrated pipe | |
| CN105804716A (en) | Method for exhausting and mining shale gas in explosive fracturing way and exploding bomb | |
| CN205664720U (en) | Powder charge water bag of deep hole water pressure blasting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161021 Address after: Anhui city of Huainan province Bagongshan District 232001 ordinary chemical Village Road Patentee after: Anhui Shun Tian Tiancheng Blasting Engineering Co., Ltd. Address before: 232001 Anhui University Of Science And Technology, Anhui, Huainan Patentee before: Anhui University Of Science And Technology |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |