CN214384476U - Blast hole arrangement structure for one-time well formation by large-diameter deep hole sectional blasting for mine - Google Patents
Blast hole arrangement structure for one-time well formation by large-diameter deep hole sectional blasting for mine Download PDFInfo
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- CN214384476U CN214384476U CN202120557838.6U CN202120557838U CN214384476U CN 214384476 U CN214384476 U CN 214384476U CN 202120557838 U CN202120557838 U CN 202120557838U CN 214384476 U CN214384476 U CN 214384476U
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Abstract
The utility model belongs to the technical field of the mine construction, especially, big diameter deep hole sublevel blasting one-time well-completion's big gun hole arrangement structure is used in mine, the following scheme is put forward now, and it is including seting up the end-broaching chamber in the drilling chamber at the top of mine mountain and the bottom of mine mountain, a plurality of big gun holes have been seted up between drilling chamber and the end-broaching chamber, the bottom of big gun hole is provided with the sand bag, the top fixedly connected with iron wire of sand bag, the bottom looks adaptation of sand bag and big gun hole, the top of sand bag is provided with the lower part filling sand, the top of lower part filling sand is provided with a plurality of explosives, the top of explosive is provided with the upper portion filling sand. The utility model discloses simple structure, fundamentally thoroughly except that the blasting fume that probably takes place in the people's worker method construction raise and smoked people and pumice injure potential safety hazards such as personnel by a crashing object, improve disturbance area operation personnel factor of safety in the pit, guarantee constructor's safety, convenient to use.
Description
Technical Field
The utility model relates to a mine construction technical field especially relates to a big diameter deep hole sectional blasting one-time well-completion's big gun hole arrangement structure is used in mine.
Background
A mine is a generic term for roadways, chambers, equipment, ground buildings and structures that form the production system of an underground coal mine. Inclined shafts, vertical shafts, adits and the like in underground mining of mines are also sometimes referred to as mines. The determination of the field range size, the mine production capacity and the service life of each mine is one of the key problems which must be solved in the mine self-design.
Underground mining mostly adopts the manual work of ordinary method to excavate the courtyard from bottom to top, and the safety hidden danger such as personnel are injured by the bruising of big gun smoke and pumice is difficult to eliminate in the courtyard excavation process, and there is the construction courtyard that uses raise boring machine at present in domestic, but it has the cost higher, mostly has rail equipment, and the dead weight is great, and is higher to the section requirement of underground haulage roadway, trackless tunnel transportation scheduling problem more difficult, so we propose a mine with major diameter deep hole sectional blasting one-time blast hole arrangement structure of well, in order to solve the above-mentioned problem.
Disclosure of Invention
The utility model aims at solving the shortcoming that exists among the prior art, and the big diameter deep hole sectional blasting one-time well-completion blast hole arrangement structure for mine that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a big diameter deep hole staged blasting one-time well-completion's big gun hole arrangement structure for mine, is including seting up the drilling chamber at the top of mine mountain and the chamber of drawing the end of the bottom of mine mountain, a plurality of big gun holes have been seted up between drilling chamber and the chamber of drawing the end, the bottom of big gun hole is provided with the sand bag, the top fixedly connected with iron wire of sand bag, the bottom looks adaptation of sand bag and big gun hole, the top of sand bag is provided with the lower part filling sand, the top of lower part filling sand is provided with a plurality of explosives, the top of explosive is provided with upper portion filling sand, the top of big gun hole is provided with the wooden stick, the outer wall of wooden stick is around being equipped with non-electric detonator and detonating fuse, detonating fuse's bottom runs through the inside of upper portion filling sand and explosive and penetrating the explosive.
Preferably, the explosive is an emulsion or bulk explosive.
Preferably, the explosive has a charge of 3.5m to 4.0 m.
Preferably, the top of the iron wire penetrates through the lower filling sand, the explosive and the upper filling sand and is wound on the wooden stick.
Preferably, the blast holes include a first blast hole and a second blast hole, the number of the first blast hole is eight, and the number of the second blast hole is two.
Preferably, the diameter of the first blast hole is 115mm, and the diameter of the second blast hole is 203 mm.
Preferably, the sand-packed thickness of the lower part packed sand is 0.5m to 1.1 m.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, a down-the-hole drill is utilized to construct two second blast holes according to the design, the first blast hole is eight, the hole depth is 37.0 meters, the iron wire is utilized to suspend the sand bag in a suspending way at the orifice of the rock drilling chamber and is placed below the bottom of the blast hole, the iron wire is shaken to lead the sand bag to become conical, the iron wire is lifted to plug the bottom of the blast hole, the lower part filling sand can be prevented from falling off, the drilling rock powder is used to carry out the lower part filling sand, the filling sand thickness is 0.6m, the measuring line is utilized to measure whether the filling height is consistent, the small explosive roll filling powder is used to reduce the using amount of the explosive, the axial uncoupled filling effect is achieved, the detonating cord is inserted into the penultimate explosive, the detonating cord is capable of gathering the cave downwards, the charging amount is 3.5m to 4.0m, the measuring line is utilized to measure whether the filling height is consistent after the explosive filling, the drilling rock powder is used to carry out the upper part filling sand, the filling sand thickness is 0.9m, the measuring line is utilized to measure whether the filling height is consistent, the optimized filling and stuffing thickness is good in well forming shape, the sand filling process is reduced for the next blasting circulation after the upper part of the drilled hole is left about 0.2 m, the hole is not needed to be drilled again, the construction efficiency is greatly improved, and the construction cost is reduced;
2. the utility model discloses in, detect after the blasting does not have the big gun smoke, carry out drilling detection, measure the blasting effect of first row and the drilling through-hole condition, the great needs rig of stifled hole thickness carries out the through-hole, does not block up and to carry out the one deck blasting down, and the blasting divide into eight rows, and last one row blasting thickness control 3.0m is because of from top to bottom be two free surfaces, easily takes place the intermediate layer accident, and blasting thickness control can effectively be solved at 3.0 m.
The utility model discloses simple structure, fundamentally except that the blasting fume that probably takes place in the worker's method construction raise and smoked people and pumice injure potential safety hazards such as personnel by a crashing object, improve disturbance area operation personnel factor of safety in the pit, guarantee constructor's safety, convenient to use.
Drawings
FIG. 1 is a schematic sectional view of a central blast hole of the present invention;
FIG. 2 is a schematic diagram of hole arrangement of the blasting completed well of the present invention;
FIG. 3 is a schematic structural view of the first to fifth rows of hole charges in the present invention;
FIG. 4 is a schematic structural view of the charge in the sixth to seventh rows of holes of the present invention;
fig. 5 is a schematic structural view of the eighth row of big gun hole charges in the utility model.
In the figure: 1. a drilling chamber; 2. blast holes; 201. a first blast hole; 202. a second blast hole; 3. a mine mountain; 4. a non-electric detonator; 5. a detonating cord; 6. a wooden stick; 7. filling sand on the upper part; 8. an explosive; 9. filling sand at the lower part; 10. iron wires; 11. a sand bag; 12. and (4) drawing a bottom chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example one
Referring to fig. 1-5, a blast hole arrangement structure for one-time well completion by large-diameter deep hole sectional blasting for mines comprises a drilling chamber 1 arranged at the top of a mine mountain 3 and a backing chamber 12 arranged at the bottom of the mine mountain 3, a plurality of blast holes 2 are arranged between the drilling chamber 1 and the backing chamber 12, sand bags 11 are arranged at the bottoms of the blast holes 2, iron wires 10 are fixedly connected to the tops of the sand bags 11, the sand bags 11 are matched with the bottoms of the blast holes 2, lower filling sand 9 is arranged at the tops of the sand bags 11, a plurality of explosives 8 are arranged at the tops of the explosives 9, upper filling sand 7 is arranged at the tops of the explosives 8, wood rods 6 are arranged at the tops of the blast holes 2, nonelectric detonators 4 and a detonating fuse 5 are wound on the outer wall of the wood rods 6, the bottom of the detonating fuse 5 penetrates through the upper filling sand 7 and the explosives 8 and penetrates into the blast hole 8, the orifice of the drilling chamber 1 is suspended below the bottom of the blast hole 2 by the detonating fuse 5, shaking the detonating cord 5 to make the sandbag 11 become conical, and lifting the detonating cord 5 to plug the bottom of the blast hole 2.
Example two
The embodiment is improved on the basis of the first embodiment: the explosive 8 is emulsified or bulk explosive, the explosive loading amount of the explosive 8 is 3.5m to 4.0m, the top of an iron wire 10 penetrates through lower filling sand 9, the explosive 8 and upper filling sand 7 and is wound on a wooden stick 6, the blast hole 2 comprises a first blast hole 201 and a second blast hole 202, the number of the first blast holes 201 is eight, the number of the second blast holes 202 is two, the lower filling sand 9 is carried out by using drilling rock powder, the sand filling thickness is 0.6m, the sand filling height is measured by using a measuring line to be consistent, the using amount of the explosive 8 can be reduced by using a small explosive roll to bind the explosive, the axial uncoupled explosive loading effect is achieved, the detonating cord 5 is inserted into the penultimate explosive, the detonating cord 5 is downward in energy-gathering cavity, the explosive loading amount is 3.5m to 4.0m, the measuring line is used for measuring whether the explosive loading height is consistent after the explosive loading, the drilling rock powder is used for upper filling sand 7, the sand filling thickness is 0.9m, the measuring line is used for measuring whether the sand height is consistent, after blasting back detection no big gun smoke, carry out drilling detection, measure first row blasting effect and drilling through-hole condition, stifled hole thickness is great and need the rig to carry out the through-hole, does not block up and to carry out the next layer blasting, and the blasting divide into eight rows, and last row blasting thickness control 3.0m is because of the upper and lower two free surfaces, easily takes place the intermediate layer accident, and blasting thickness control can effectively be solved at 3.0 m.
EXAMPLE III
The embodiment is improved on the basis of the first embodiment: the diameter of a first blast hole 201 is 115mm, the diameter of a second blast hole 202 is 203mm, the sand filling thickness of lower filling sand 9 is 0.5m-1.1m, the lower filling sand 9 is carried out by using drilling rock powder, the sand filling thickness is 0.6m, the sand filling height is measured by using a measuring line to be consistent, the use amount of explosive 8 can be reduced by using small explosive sticks to be bundled and filled, the axial uncoupled charging effect is achieved, a detonating cord 5 is inserted into the explosive of the penultimate section, the energy-gathered cavity of the detonating cord 5 is downward, the charge amount is 3.5 m-4.0 m, the charging height is measured by using a measuring line to be consistent after charging, the upper filling sand 7 is carried out by using the drilling rock powder, the sand filling thickness is 0.9m, the sand filling height is measured by using the measuring line to be consistent, after blasting, no gun smoke is detected, the drilling detection is carried out, the first row blasting effect and the condition of drilling through holes are measured, the through holes with larger hole blocking thickness, the drilling machine can carry out the next layer of blasting without blocking, the blasting is divided into eight rows, the blasting thickness of the last row is controlled to be 3.0m, interlayer accidents are easy to happen due to the fact that the upper and lower rows are double free surfaces, and the blasting thickness can be effectively solved by controlling the blasting thickness to be 3.0 m.
The working principle is as follows: according to the design, a down-the-hole drilling machine (Anhui copper crown T150 drilling machine) is used for constructing two second blast holes 202, eight first blast holes 201 are formed, the hole depth is 37.0 m, the height of a top-bottom column is removed by 20.0m and the height of a construction roadway is 3.0m according to the height of a middle section, an opening of a rock drilling chamber 1 is suspended by a detonating cord 5 and is lowered below the bottom of a blast hole 2, the detonating cord 5 is shaken to enable the detonating cord 11 to become conical, the detonating cord 5 is lifted up to plug the bottom of the blast hole 2, the drilling rock powder is used for filling sand 9 at the lower part, the sand filling thickness is 0.6m, the measuring line is used for measuring whether the sand filling height is consistent, the small explosive roll is used for binding and filling explosive, the axial non-coupling explosive filling effect is achieved, the detonating cord 5 is inserted into the penultimate explosive, the detonating cord 5 is downward, the explosive gathering cavity is filled with the explosive amount of 3.5m to 4.0m, the measuring line is used for measuring whether the height is consistent after the explosive filling height, the drilling hole is drilled, the sand filling thickness is 0.9m, whether the sand filling height is consistent or not is measured by using a measuring line, after blasting detection is carried out without blasting smoke, drilling detection is carried out, the blasting effect of the first row and the condition of a drilling through hole are measured, the hole blocking thickness is large, a drilling machine is required to carry out the through hole, next layer blasting can be carried out without blocking, the blasting is divided into eight rows, the blasting thickness of the last row is controlled to be 3.0m, interlayer accidents are easy to occur due to the fact that the upper free surface and the lower free surface are double free surfaces, the blasting thickness can be effectively controlled to be 3.0m, pumice at the well mouth is cleaned after blasting is run through, safety warning marks are pulled, and the blasting is forbidden to enter the interior.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A blast hole arrangement structure for one-time well completion of large-diameter deep hole sectional blasting for mines comprises a rock drilling chamber (1) arranged at the top of a mine mountain body (3) and a bottoming chamber (12) arranged at the bottom of the mine mountain body (3), and is characterized in that a plurality of blast holes (2) are formed between the rock drilling chamber (1) and the bottoming chamber (12), a sand bag (11) is arranged at the bottom of each blast hole (2), an iron wire (10) is fixedly connected to the top of the sand bag (11), the sand bag (11) is matched with the bottom of the blast hole (2), lower filling sand (9) is arranged at the top of the sand bag (11), a plurality of explosives (8) are arranged at the top of the lower filling sand (9), upper filling sand (7) is arranged at the top of the explosives (8), wooden sticks (6) are arranged at the top of the blast hole (2), and nonelectric detonators (4) and blasting fuses (5) are wound on the outer wall of the wooden sticks (6), the bottom of the detonating cord (5) penetrates through the upper filling sand (7) and the explosive (8) and penetrates into the explosive (8).
2. The blasthole arrangement for one-shot blasting of large-diameter deep hole for mines according to claim 1, wherein the explosives (8) are emulsion or bulk explosives.
3. The blasthole arrangement for sublevel blasting one-shot shaft for a large-diameter deep hole in mine according to claim 1, wherein the explosive charge (8) is 3.5m to 4.0 m.
4. The blasthole arrangement structure for one-time completion of large-diameter deep hole sectional blasting for mines as set forth in claim 1, wherein the top of the iron wire (10) penetrates through the lower filling sand (9), the explosive (8) and the upper filling sand (7) and is wound on the wooden stick (6).
5. The mine is with big diameter deep hole staged blasting one-time well-completion blast hole arrangement structure of claim 1, characterized in that, said blast hole (2) includes first blast hole (201) and second blast hole (202), the number of said first blast hole (201) is eight, the number of said second blast hole (202) is two.
6. The blast hole arrangement structure for the sublevel blasting one-time well completion of a large-diameter deep hole for the mine according to claim 5, wherein the diameter of the first blast hole (201) is 115mm, and the diameter of the second blast hole (202) is 203 mm.
7. The blasthole arrangement for one-shot blasting of a large-diameter deep hole for mine according to claim 1, wherein the sand pack thickness of the lower sand pack (9) is 0.5m to 1.1 m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120557838.6U CN214384476U (en) | 2021-03-18 | 2021-03-18 | Blast hole arrangement structure for one-time well formation by large-diameter deep hole sectional blasting for mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120557838.6U CN214384476U (en) | 2021-03-18 | 2021-03-18 | Blast hole arrangement structure for one-time well formation by large-diameter deep hole sectional blasting for mine |
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| CN214384476U true CN214384476U (en) | 2021-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143853A (en) * | 2022-08-11 | 2022-10-04 | 南昌大学 | Combined detonation type blasting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143853A (en) * | 2022-08-11 | 2022-10-04 | 南昌大学 | Combined detonation type blasting method |
| CN115143853B (en) * | 2022-08-11 | 2024-03-01 | 南昌大学 | Combined detonation blasting method |
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