CN215447614U - Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device - Google Patents
Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device Download PDFInfo
- Publication number
- CN215447614U CN215447614U CN202121154807.2U CN202121154807U CN215447614U CN 215447614 U CN215447614 U CN 215447614U CN 202121154807 U CN202121154807 U CN 202121154807U CN 215447614 U CN215447614 U CN 215447614U
- Authority
- CN
- China
- Prior art keywords
- blasting
- blasting energy
- energy
- fixed
- pipe
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a device for back-dragging shaped charge by roof cutting entry retaining presplitting blasting, which comprises: locating piece, blasting energy-collecting tube, fixed sponge, explosive cartridge, electric detonator, lead wire and detonating cord are equipped with several sections of explosive sections in blasting energy-collecting tube, and every section of explosive section includes: explosive cartridge and fixed sponge, a plurality of fixed sponge is fixed in blasting energy-gathering pipe, explosive cartridge dress is in the blasting energy-gathering pipe on each fixed sponge, the detonating cord buries in explosive cartridge, and pass from fixed sponge, be equipped with on the fixed sponge of blasting energy-gathering pipe end at the electric detonator, the lead wire links to each other with electric detonator, the lead wire leads to outside the blasting energy-gathering pipe, the detonating cord that buries at blasting energy-gathering pipe links to each other with electric detonator, a plurality of locating piece cover is outside blasting energy-gathering pipe, it still includes: the steel wire, the perforation bundle and the steel wire pull ring are provided with the perforation bundle on the top end wall close to the blasting energy-collecting tube, one end of the steel wire is fixed on the perforation bundle, and the other end of the steel wire is led to the lower end of the blasting energy-collecting tube and is fixed on the steel wire pull ring.
Description
Technical Field
The utility model relates to a device capable of realizing retractile energy-gathered charging for pre-splitting blasting of a roof-cutting retained roadway, which is suitable for the technical field of roof-cutting gob-side retained roadway for underground coal mine coal pillar-free mining.
Background
In the actual application process, the top cutting blasting technology is used as a means for assisting gob-side entry retaining, explosives are fixed on a long rod-shaped medium through a drilling hole which is made in advance to form a blasting tube, then the blasting tube is plugged into a preset position in the hole and is subjected to presplitting blasting, so that a top plate on the goaf side of a roadway forms a presplitting kerf surface, and the top plate on the goaf automatically collapses along the kerf surface under the action of self weight and mine pressure to form a roadway side. But in actual work progress, because the difference of lithology, often in three soft stratum, drilling depth is darker, the hole collapse is serious, and difficult scheduling problem appears blocking pipe or pulling back behind the blocking pipe easily when the site operation personnel is to downthehole stopper blast pipe, leads to becoming the dead hole, has increased construction cost, simultaneously because the explosive is located near the drill way and has brought the potential safety hazard, in order to solve this difficult problem of construction, the utility model discloses a but cut top entry retaining presplitting blasting drag can pull back and gather ability loaded constitution.
Disclosure of Invention
The utility model aims to solve the problems that when a site constructor plugs a blasting tube into a hole, the tube is difficult to pull back after being clamped, and the like, and provides a device capable of dragging back energy-gathered charging for roof cutting and roadway retaining presplitting blasting.
In order to achieve the purpose of the utility model, the following technical scheme is adopted in the application:
the utility model relates to a device for performing pre-splitting blasting on a roof cutting entry retaining and capable of drawing back and charging shaped charges, which comprises: locating piece, blasting energy-collecting tube, fixed sponge, explosive cartridge, electric detonator, lead wire and detonating cord are equipped with several sections of explosive sections in blasting energy-collecting tube, and every section of explosive section includes: explosive cartridge and fixed sponge, a plurality of fixed sponge is fixed in blasting energy-gathering pipe, explosive cartridge dress is in the blasting energy-gathering pipe on each fixed sponge, the detonating cord buries in explosive cartridge, and pass from fixed sponge, be equipped with on the fixed sponge of blasting energy-gathering pipe end at electric detonator, the lead wire links to each other with electric detonator, the lead wire leads to outside the blasting energy-gathering pipe, the detonating cord that buries at blasting energy-gathering pipe links to each other with electric detonator, a plurality of locating piece cover is outside blasting energy-gathering pipe, wherein: it still includes: the steel wire, the perforation bundle and the steel wire pull ring are provided with the perforation bundle on the top end wall close to the blasting energy-collecting tube, one end of the steel wire is fixed on the perforation bundle, and the other end of the steel wire is led to the lower end of the blasting energy-collecting tube and is fixed on the steel wire pull ring.
The utility model relates to a device capable of dragging back the shaped charge for roof cutting entry retaining presplitting blasting, wherein: the blasting energy concentrator comprises: the blasting energy-accumulating tube upper segment and the blasting energy-accumulating tube lower segment are semicircular and are mutually clamped together.
The utility model relates to a device capable of dragging back the shaped charge for roof cutting entry retaining presplitting blasting, wherein: the number of the electric detonators is two, the lead is connected with one of the electric detonators, and the detonating cord embedded in the blasting energy collecting tube is connected with one of the electric detonators.
The utility model relates to a device capable of dragging back the shaped charge for roof cutting entry retaining presplitting blasting, wherein: the two positioning blocks are respectively sleeved on the upper section and the lower section of the blasting energy-gathering tube.
The device for dragging the energy-gathered charge back in the roof-cutting entry-retaining presplitting blasting can drag the energy-gathered charge back through the steel wire line if the hole is blocked and the charge cannot be plugged when the energy-gathered charge is plugged into the presplitting hole, thereby avoiding potential safety hazards.
The utility model has at least the following beneficial technical effects:
1. the utility model relates to a roof-cutting entry retaining presplitting blasting back-pulling energy-gathering charge structure, which adopts two electric detonators to respectively detonate a detonating cord and an explosive, the explosive explosion further promotes the detonating cord to index the explosive, the detonating structure has double insurance, the possibility of insufficient explosion of a dummy gun is reduced, the top end of a first section energy-gathering blasting tube at the top comprises a beam-penetrating hole, a beam-penetrating steel wire is connected with the top of the tube, the other end of the beam-penetrating steel wire is led out of the end section of the energy-gathering blasting tube, and a steel wire pull ring is bound, when the tube is clamped in the hole, the steel wire ring is pulled along the outside of the hole, so that an end force can be generated by a blasting device, the falling of a part of the tube section in the tube drawing back process is prevented, and the smooth drawing back is ensured.
2. The tail end of the explosive cartridge is plugged with a fixed sponge, so that the explosive cartridge is prevented from being dislocated and sliding under the action of gravity, and accurate position blasting is ensured.
3. The first section of energy-gathered blasting pipe and the last section of energy-gathered blasting pipe are sleeved with positioning blocks, after the blasting device is mounted in a drill hole, the blasting device is properly adjusted in a rotating mode, the positioning blocks are embedded and fixed in the drill hole, and the positioning blocks can play a role in supporting and fixing along with the shrinkage of rock strata, so that accurate position blasting is guaranteed.
Drawings
Fig. 1 is a schematic forward view of a roof cutting entry retaining pre-splitting blasting retrievable shaped charge apparatus of the utility model;
FIG. 2 is an enlarged cross-sectional view taken along line A-A of FIG. 1;
figure 3 is a schematic cross-sectional view of the roof drill 6.
In fig. 1 to 3, reference numeral 1 is a steel wire; reference numeral 2 is a positioning block; the reference number 3 is a blasting energy-gathering tube; the reference number 31 is a segment on the blasting energy-gathering pipe; the reference number 32 is a lower segment of the blasting energy-gathering pipe; reference numeral 4 is a fixing sponge; reference numeral 5 is a cartridge; reference numeral 6 is a top plate drilled hole; reference numeral 7 is an electric detonator; reference numeral 8 denotes stemming; reference numeral 9 is a lead wire; reference numeral 10 is a steel wire tab; reference numeral 11 is a detonating cord; reference numeral 12 is a through-beam hole; reference numeral 13 is an explosive section.
Detailed Description
The utility model is further described in the following with reference to the figures and examples
As shown in fig. 1 to 3, the apparatus for roof cutting entry retaining pre-splitting blasting retrievable shaped charge of the present invention comprises: the explosive blasting device comprises a positioning block 2, a blasting energy collecting pipe 3, a fixing sponge 4, an explosive cartridge 5, an electric detonator 7, a lead 9, a detonating cord 11, a steel wire 1, a perforation bundle 12 and a steel wire pull ring 10. The blasting concentrator 3 comprises: the blasting energy-accumulating tube upper tube sheet 31 and the blasting energy-accumulating tube lower tube sheet 32 are semicircular and are clamped together. A plurality of sections of explosive sections 13 are arranged in the blasting energy-collecting pipe 3, and each section of explosive section 13 comprises: the explosive cartridge is characterized by comprising explosive cartridges 5 and fixed sponges 4, wherein a plurality of fixed sponges 4 are fixed in the blasting energy-gathering pipe 3, the explosive cartridges 5 are arranged in the blasting energy-gathering pipe 3 on each fixed sponge 4, detonating cords 11 are buried in the explosive cartridges 5 and penetrate through the fixed sponges 4, two electric detonators 7 are arranged on the fixed sponges 4 at the tail ends of the blasting energy-gathering pipes 3, a lead 9 is connected with one electric detonator 7, and the detonating cords 11 buried in the blasting energy-gathering pipes 3 are connected with one electric detonator 7. The two positioning blocks 2 are respectively sleeved on the upper section and the lower section outside the blasting energy-accumulating tube 3, a perforation bundle 12 is arranged on the top end wall close to the blasting energy-accumulating tube 3, one end of the steel wire 1 is fixed on the perforation bundle 12, and the other end is led to the lower end of the blasting energy-accumulating tube 3 and is fixed on a steel wire pull ring 10.
Blasting and roof cutting are carried out on a certain mine to carry out gob-side entry retaining construction, roof cutting blasting pressure relief is adopted on a roof, a pre-crack penetrating through a direct roof needs to be prefabricated by roof blasting, and the concrete construction steps are as follows:
1) laying energy-collecting pipe lower pipe sheets 32 on the ground, laying the detonating cord 11 and the steel wire 1 inside, and connecting the steel wire 1 with the top of the energy-collecting pipe;
2) according to the designed number of explosive cartridges 5, placing the explosive cartridges 5 in the blasting energy-gathering pipe lower pipe sheet 32 one by one;
3) the tail end explosive cartridge is provided with an electric detonator 7 and leads a lead wire 9 out of the tube, and a detonating cord 11 is bound with another electric detonator 7 and leads the lead wire 9 out of the tube;
4) the tail end of each section of the medicated roll 5 is plugged with a fixing sponge 4 for fixing;
5) installing an upper pipe sheet 31 of each section of blasting energy-collecting pipe to enable each section of blasting energy-collecting pipe 3 to form a whole;
6) sleeving a positioning block 2 on the blasting energy collecting pipe;
7) the blasting device is plugged into the drilled top plate 6, and if a pipe is clamped in the process, the steel wire pull ring 10 is pulled to pull repeatedly;
8) after the blasting device is plugged into a preset position, the blasting device is properly rotated and adjusted, so that the positioning block 2 is embedded and fixed in the drill hole;
9) leading out a steel wire 1 and a lead 9, and filling the blank hole section of the blasting energy-collecting tube 3 extending out of the top plate drill hole 6 with stemming 8;
10) after the connection of the lead 9 is completed, the initiator is started to complete the blasting.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and those skilled in the art should make various changes and modifications to the technical solution of the present invention without departing from the spirit of the present invention, which falls within the scope of the present invention defined by the claims.
Claims (4)
1. A roof cutting entry retaining presplitting blasting retractably shaped charge apparatus comprising: locating piece (2), blasting energy-collecting tube (3), fixed sponge (4), explosive cartridge (5), electric detonator (7), lead wire (9) and explosive fuse (11), be equipped with several sections explosive section (13) in blasting energy-collecting tube (3), every section explosive section (13) includes: explosive cartridge (5) and fixed sponge (4), fixed sponge (4) of a plurality of are fixed in blasting energy gathering pipe (3), explosive cartridge (5) are adorned in blasting energy gathering pipe (3) on each fixed sponge (4), detonating cord (11) are buried in explosive cartridge (5), and pass from fixed sponge (4), be equipped with on electric detonator (7) on blasting energy gathering pipe (3) terminal fixed sponge (4), lead wire (9) link to each other with electric detonator (7), lead wire (9) are led to outside blasting energy gathering pipe (3), detonating cord (11) buried in blasting energy gathering pipe (3) link to each other with electric detonator (7), a plurality of locating piece (2) cover is outside blasting energy gathering pipe (3), its characterized in that: it still includes: the steel wire (1), the perforation bundle (12) and the steel wire pull ring (10), the perforation bundle (12) is arranged on the top end wall close to the blasting energy-collecting tube (3), one end of the steel wire (1) is fixed on the perforation bundle (12), and the other end is led to the lower end of the blasting energy-collecting tube (3) and fixed on the steel wire pull ring (10).
2. The roof cutting entry retaining presplitting blasting retrievable shaped charge apparatus of claim 1, wherein: the blasting concentrator tube (3) comprises: the pipe piece (31) on the blasting energy-accumulating tube and the pipe piece (32) under the blasting energy-accumulating tube are semicircular, and the pipe piece (31) on the blasting energy-accumulating tube and the pipe piece (32) under the blasting energy-accumulating tube are mutually clamped together.
3. The roof cutting entry retaining presplitting blasting retrievable shaped charge apparatus of claim 2, wherein: the number of the electric detonators (7) is two, the lead wire (9) is connected with one of the electric detonators (7), and the detonating cord (11) buried in the blasting energy gathering tube (3) is connected with one of the electric detonators (7).
4. The roof cutting entry retaining presplitting blasting retrievable shaped charge apparatus of claim 3, wherein: the two positioning blocks (2) are respectively sleeved on the upper section and the lower section of the blasting energy-collecting pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154807.2U CN215447614U (en) | 2021-05-26 | 2021-05-26 | Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154807.2U CN215447614U (en) | 2021-05-26 | 2021-05-26 | Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215447614U true CN215447614U (en) | 2022-01-07 |
Family
ID=79708560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121154807.2U Active CN215447614U (en) | 2021-05-26 | 2021-05-26 | Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215447614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575846A (en) * | 2022-03-10 | 2022-06-03 | 中国矿业大学(北京) | Goaf roof caving and crushing expansion control device and method |
| CN115574676A (en) * | 2022-11-10 | 2023-01-06 | 惠州市兴鲁节能科技有限公司 | Coal mine roof cutting and roadway retaining energy gathering device |
-
2021
- 2021-05-26 CN CN202121154807.2U patent/CN215447614U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575846A (en) * | 2022-03-10 | 2022-06-03 | 中国矿业大学(北京) | Goaf roof caving and crushing expansion control device and method |
| CN114575846B (en) * | 2022-03-10 | 2023-01-13 | 中国矿业大学(北京) | Goaf roof caving and crushing control device and method |
| CN115574676A (en) * | 2022-11-10 | 2023-01-06 | 惠州市兴鲁节能科技有限公司 | Coal mine roof cutting and roadway retaining energy gathering device |
| CN115574676B (en) * | 2022-11-10 | 2024-03-29 | 惠州市兴鲁节能科技有限公司 | Colliery is cut top entry retaining and is gathered can device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215447614U (en) | Top-cutting entry-retaining presplitting blasting back-dragging energy-gathered charging device | |
| CN103940309B (en) | A kind of method of underground blasting Cheng Jing | |
| CN108132005B (en) | A kind of method of short-delay blasting in medium-length hole upward hole | |
| CN112922606B (en) | Full-section smooth blasting construction method suitable for all-computer three-arm rock drilling jumbo for III-grade and IV-grade surrounding rock large-section railway tunnels | |
| CN103244180B (en) | Gob-side entry driving surrounding rock control method using remaining small pillars | |
| CN114166082B (en) | Tunnel advanced drilling hole combination accurate control blasting structure and construction process | |
| CN112161534B (en) | One-step mining control blasting method for mine underground upward access | |
| CN109470100A (en) | A kind of coal mine roof plate Deephole pre-splitting blasting method | |
| CN106895751A (en) | A kind of medium-length hole blasting calculating method | |
| CN109870084B (en) | VCR mining method hole-sweeping-free blasting charge structure and construction method thereof | |
| CN102967191A (en) | Blasting method for treatment of gob | |
| CN105627846A (en) | Method for preventing and treating rock burst through deep-hole pressure release blasting | |
| CN201159620Y (en) | Deep borehole blasting cartridge | |
| CN109900175B (en) | Low-damage blasting method for underground mine roadway tunneling | |
| CN212154765U (en) | Deep hole pre-splitting structure for fully mechanized mining face waste rock area | |
| CN115307501A (en) | Blasting construction method for mountain earthwork | |
| CN213392157U (en) | Construction structure for blasting high-order section drop shaft into well | |
| CN213021276U (en) | Explosive loading funnel for blasting | |
| CN211783096U (en) | Novel spaced charging structure based on sympathetic detonation | |
| CN111854552B (en) | Top plate deep hole energy-gathering blasting device | |
| CN114542067A (en) | Safe mining method for coal seam covered with hard rock stratum | |
| CN105240044A (en) | Method for preventing and treating coal and gas outburst by explosion | |
| CN212058512U (en) | Deep hole axial non-coupling top-cutting blasting tube | |
| CN220649259U (en) | Flexible charging device for coal mine underground deep hole pre-splitting roof-cutting blasting | |
| CN219656742U (en) | Deep hole presplitting blasting charge structure with over-structured working face |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |