CN219714181U - Rapid pre-fracturing blasting device for shield tunnel explosive-gathering explosive bag - Google Patents
Rapid pre-fracturing blasting device for shield tunnel explosive-gathering explosive bag Download PDFInfo
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- CN219714181U CN219714181U CN202320893965.2U CN202320893965U CN219714181U CN 219714181 U CN219714181 U CN 219714181U CN 202320893965 U CN202320893965 U CN 202320893965U CN 219714181 U CN219714181 U CN 219714181U
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- Prior art keywords
- thin
- aluminum pipe
- explosive
- wall
- pipe
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- 239000002360 explosive Substances 0.000 title claims abstract description 41
- 238000005422 blasting Methods 0.000 title claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 16
- 238000005474 detonation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000005641 tunneling Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000416 hydrocolloid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model discloses a rapid pre-splitting blasting device for a shield tunnel explosive-gathering explosive bag, which comprises a thin-wall aluminum pipe, wherein a plurality of energy gathering covers are arranged on the pipe wall of the thin-wall aluminum pipe, explosive is filled in the thin-wall aluminum pipe, a detonating cord is pre-buried before the thin-wall aluminum pipe is filled, one end of the detonating cord is tightly attached to one side of the thin-wall aluminum pipe and penetrates through the whole length of the thin-wall aluminum pipe, and the other end of the detonating cord extends out of the thin-wall aluminum pipe. The energy gathering cover can enable rocks around blast holes of hard rock sections of the shield tunnel to be more uniform and controllable in pre-fracturing under the combined action of metal energy gathering jet flow, detonation wave and explosive gas; the pipe wall of the aluminum pipe is thin and has strong plasticity, so that the energy gathering cover on the pipe wall of the thin-wall aluminum pipe can be mechanically stamped, and the processing is convenient; meanwhile, the device after the completion of charging has the characteristics of convenience, rapidness, simplicity in operation, safety, reliability and good fracturing effect.
Description
Technical Field
The utility model relates to the technical field of blasting construction, in particular to a rapid pre-fracturing blasting device for a shield tunnel energy-gathering explosive bag.
Background
Along with the comprehensive popularization of underground tunnels, underground deep-buried subway tunnel engineering in cities is gradually increased, so that safe and efficient construction is realized, the influence on the outside is reduced, and a shield method is generally adopted in the construction process.
However, complex areas such as composite bedrock, hard boulders and the like are frequently encountered in the tunneling process of the shield method, so that the normal tunneling speed of the shield machine is seriously influenced, the cutter head is seriously worn, and the design route of the shield machine is seriously deviated. At present, in order to treat the situation of harder geological conditions encountered by a shield machine, commonly adopted methods include manual rock breaking by opening a cabin, exposing rock breaking modes such as excavating and taking a rock by an upper earth covering layer, drilling and blasting on the ground and the like. Wherein the way of manually breaking rock in the cabin is accompanied by higher construction risks; for road sections such as urban luxury or main traffic, the method for excavating and taking stones cannot be realized; the ground drilling blasting method can be suitable for various hard rock layers or boulders, but as the shield method is mostly used for urban underground railway tunnels, the upper environment is complex, the surrounding rock is greatly damaged by the ground drilling blasting, and the blasting damage influence is large, so that the application range of the method is greatly limited.
In order to avoid the defects, the utility model provides a rapid pre-fracturing blasting device for a shield tunnel energy-gathering explosive bag.
Disclosure of Invention
The utility model aims to provide a rapid pre-fracturing blasting device for a shield tunnel explosive-gathering bag, so as to solve the problems in the prior art.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a rapid pre-fracturing blasting device for a shield tunnel energy-gathering explosive bag, which comprises a thin-wall aluminum pipe, wherein a plurality of energy gathering covers are arranged on the pipe wall of the thin-wall aluminum pipe, explosive is filled in the thin-wall aluminum pipe, a detonating cord is pre-buried in the thin-wall aluminum pipe before the explosive is filled in the explosive, one end of the detonating cord is tightly attached to one side of the thin-wall aluminum pipe and penetrates through the whole length of the thin-wall aluminum pipe, and the other end of the detonating cord extends out of the thin-wall aluminum pipe.
Preferably, the wall of the thin-wall aluminum pipe is distributed with a plurality of energy gathering covers, and the energy gathering covers are uniformly distributed on the wall of the thin-wall aluminum pipe.
Preferably, the energy collecting cover is formed by mechanical stamping, and the cone apex angle of the energy collecting cover is 30-70 degrees.
Preferably, one end of the detonating cord extending out of the thin-wall aluminum tube is used for being connected with an adjacent shaped charge pre-fracturing device or an industrial digital electronic detonator.
Preferably, the explosive is preferably one of a colloidal emulsion explosive, a hydrocolloid explosive, a slurry explosive, a powdery explosive or a special explosive.
Preferably, the length of the thin-wall aluminum pipe is 1 meter, the diameter of the round pipe is 60 millimeters, and the thin-wall aluminum pipe can be customized according to the actual situation on site.
The utility model discloses the following technical effects:
(1) The energy gathering device can enable the rock around the blast hole of the hard rock section of the shield tunnel to be more uniform and controllable in pre-fracturing under the combined action of metal energy gathering jet flow, detonation wave and explosive gas;
(2) The aluminum pipe has thinner pipe wall and strong plasticity, so that the energy gathering cover on the pipe wall of the thin-wall aluminum pipe can be mechanically stamped, and the processing is convenient;
(3) The utility model has the characteristics of convenience, rapidness, simple operation, safety, reliability and good fracturing effect after the charging is completed;
(4) After the energy gathering device is exploded, hard rock on the tunneling route in front of the shield tunneling machine can be uniformly cracked, so that the shield tunneling machine can efficiently tunnel.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the present utility model;
FIG. 2 is a side view of the present utility model;
wherein, 1, thin-wall aluminum tube; 2. a focusing cover; 3. an explosive; 4. detonating cord.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-2, the utility model provides a rapid pre-fracturing blasting device for a shield tunnel energy-gathering explosive bag, which comprises a thin-wall aluminum pipe 1, wherein a plurality of energy gathering covers 2 are arranged on the pipe wall of the thin-wall aluminum pipe 1, explosive 3 is filled in the thin-wall aluminum pipe 1, a detonating cord 4 is pre-buried in the thin-wall aluminum pipe 1 before the explosive is filled, one end of the detonating cord 4 is tightly attached to one side of the thin-wall aluminum pipe 1 and penetrates through the whole length, and the other end of the detonating cord 4 extends out of the thin-wall aluminum pipe 1.
The thin-wall aluminum pipe 1 is a thin-wall aluminum round pipe, the plasticity is strong, the energy gathering cover 2 can be directly punched on the thin-wall aluminum pipe 1 by a machine for one time, the processing is convenient, and the device of the metal aluminum material is convenient to fill in a horizontal blast hole; the detonating cord 4 is embedded in the thin-wall aluminum tube 1 and penetrates through the whole length, one end of the detonating cord extends out of the thin-wall aluminum tube 1, connection between adjacent thin-wall aluminum tubes 1 is facilitated, and detonation transfer stability is guaranteed.
In a further optimization scheme, a plurality of energy gathering covers 2 are distributed on the wall of the thin-wall aluminum pipe 1, and the energy gathering covers 2 are uniformly distributed on the wall of the thin-wall aluminum pipe 1.
The energy gathering cover 2 is uniformly distributed on the pipe wall of the thin-wall aluminum pipe 1, and metal jet flow generated during explosion has certain quality and speed, so that a stable perforation effect and a good perforation effect can be achieved. The pressure of the generated metal jet is far greater than the compression bearing capacity of surrounding rock, so that the rock can be easily crushed, tiny cracks are generated, and then the rock around the blast hole is uniformly crushed under the combined action of detonation waves and explosive gases.
In a further optimized scheme, the energy gathering cover 2 is formed by mechanical stamping, and the cone apex angle of the energy gathering cover 2 is 30-70 degrees.
When the cone apex angle of the energy gathering cover 2 is between 30 and 70 degrees, the depth of the energy gathering micro-perforation can be deepened to the maximum extent, the utilization rate of the explosive 3 is highest, and the micro-crack effect generated by the energy gathering jet flow is optimal.
In a further optimized scheme, one end of the detonating cord 4 extending out of the thin-wall aluminum tube 1 is used for being connected with an adjacent shaped charge pre-fracturing device or an industrial digital electronic detonator.
After the explosive is filled in the construction site, the explosive filling length designed according to the blasting scheme is connected with the adjacent thin-wall aluminum tubes 1 by using detonating cords 4 so as to ensure the stability of detonation transfer.
In a further optimized scheme, the explosive 3 is preferably one of colloidal emulsion explosive, water gel explosive, slurry explosive, powdery explosive or special explosive.
The explosive 3 filled in the thin-wall aluminum pipe 1 is various in types, can be directly used after being packaged by a factory, and is convenient, quick, safe and reliable in filling process.
According to a further optimization scheme, the length of the thin-wall aluminum pipe 1 is 1 meter, the diameter of the round pipe is 60 millimeters, and the thin-wall aluminum pipe can be customized according to the actual situation on site.
When the shield tunnel meets a hard rock road section, the tunneling speed is slow, the abrasion is serious, the shield tunnel cannot retreat, the space provided by the rotary cutter head is narrow, the length of the thin-wall aluminum pipe 1 is designed to be 1 meter, the shield tunnel can be customized according to actual conditions, and the explosive loading with the design length of the blasting scheme can be conveniently completed in the narrow space. During blasting, metal jet flow generated by the pre-fracturing device guides blasting gas and detonation waves to uniformly pre-fracture rock around a blast hole, and a pre-fracturing zone which is uniformly broken is formed on a shield tunnel tunneling route, so that the safety and the high efficiency of the shield machine are ensured.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (6)
1. A quick pre-fracturing blasting unit that is used for shield tunnel to gather can cartridge bag which characterized in that: including thin-walled aluminum pipe (1), be equipped with a plurality of energy gathering covers (2) on thin-walled aluminum pipe (1) pipe wall, be equipped with explosive (3) in thin-walled aluminum pipe (1), pre-buried being equipped with detonating cord (4) before the powder charge in thin-walled aluminum pipe (1), detonating cord (4) one end is hugged closely thin-walled aluminum pipe (1) one side and runs through the full length, detonating cord (4) other end stretches out to the outside of thin-walled aluminum pipe (1).
2. The rapid pre-fracturing blasting device for a shield tunnel shaped charge of claim 1, wherein: the energy gathering covers (2) are distributed on the pipe wall of the thin-wall aluminum pipe (1), and the energy gathering covers (2) are uniformly distributed on the pipe wall of the thin-wall aluminum pipe (1).
3. The rapid pre-fracturing blasting device for a shield tunnel shaped charge of claim 2, wherein: the energy-gathering cover (2) is formed by mechanical stamping, and the cone apex angle of the energy-gathering cover (2) is 30-70 degrees.
4. The rapid pre-fracturing blasting device for a shield tunnel shaped charge of claim 1, wherein: one end of the detonating cord (4) extending out of the thin-wall aluminum tube (1) is used for being connected with an adjacent shaped charge pre-fracturing device or an industrial digital electronic detonator.
5. The rapid pre-fracturing blasting device for a shield tunnel shaped charge of claim 1, wherein: the explosive (3) is one of colloidal emulsion explosive, water gel explosive, slurry explosive, powdery explosive or special explosive.
6. The rapid pre-fracturing blasting device for a shield tunnel shaped charge of claim 1, wherein: the length of the thin-wall aluminum pipe (1) is 1 meter, and the diameter of the round pipe is 60 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893965.2U CN219714181U (en) | 2023-04-20 | 2023-04-20 | Rapid pre-fracturing blasting device for shield tunnel explosive-gathering explosive bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893965.2U CN219714181U (en) | 2023-04-20 | 2023-04-20 | Rapid pre-fracturing blasting device for shield tunnel explosive-gathering explosive bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219714181U true CN219714181U (en) | 2023-09-19 |
Family
ID=87977767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320893965.2U Active CN219714181U (en) | 2023-04-20 | 2023-04-20 | Rapid pre-fracturing blasting device for shield tunnel explosive-gathering explosive bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219714181U (en) |
-
2023
- 2023-04-20 CN CN202320893965.2U patent/CN219714181U/en active Active
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