CN206573020U - The blasting system of demolition set and directional drilling with the demolition set - Google Patents
The blasting system of demolition set and directional drilling with the demolition set Download PDFInfo
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- CN206573020U CN206573020U CN201720262262.4U CN201720262262U CN206573020U CN 206573020 U CN206573020 U CN 206573020U CN 201720262262 U CN201720262262 U CN 201720262262U CN 206573020 U CN206573020 U CN 206573020U
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Abstract
The utility model provides the blasting system of a kind of demolition set and the directional drilling with the demolition set.Wherein, the demolition set includes：Housing, explosive cartridge, detonator and retaining piece；Wherein, retaining piece is connected to the inwall of housing, for will be divided into the first space and second space in housing；Explosive is provided at the first space, and the first space is used to place towards layer to be blasted；Detonator is inserted in explosive cartridge.Housing is divided into the first space and second space by the utility model by retaining piece, explosive cartridge is placed towards in the first space of layer to be blasted, towards layer to be blasted when enabling to explosive cartridge explosion, explosion everywhere when avoiding the explosive cartridge from igniting, enhance the directionality of demolition set explosion, realize the directional blasting of demolition set, improve the practicality of demolition set, and, explosive is provided in housing, housing can play waterproof and dampproof and antipollution effect, it is to avoid water or other materials are polluted to explosive cartridge causes explosive cartridge can not explosion.
Description
Technical Field
The utility model relates to an underground coal seam gasification technical field particularly, relates to an explosion equipment and have this explosion equipment's directional drilling's blasting system.
Background
Currently, blasting devices insert detonators into the explosives, and the detonators are used for igniting the explosives. The existing blasting device generally carries out irregular movement after ignition, so that the whole area is blasted. When only the pre-blasting part needs to be blasted according to relevant process requirements, the existing blasting device not only enables the pre-blasting part to be blasted, but also other parts which do not need to be blasted can be blasted, so that the parts which do not need to be blasted are damaged, therefore, the existing blasting device can not realize directional blasting, and the practicability is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an explosion device aims at solving the problem that the unable directional blasting of explosion device leads to explosion device's practicality to be low among the prior art. The utility model also provides a directional drilling's blasting system with this blasting unit.
In one aspect, the utility model provides an explosion device, the device includes: a housing, a cartridge, a detonator and a barrier; the baffle piece is connected to the inner wall of the shell and is used for dividing the shell into a first space and a second space; the explosive cartridge is arranged in a first space, and the first space is used for being arranged towards a layer to be exploded; the detonator is inserted into the explosive cartridge.
Further, in the blasting device, the casing is a waterproof casing.
Further, in the blasting device, the second space is filled with a combustible.
The utility model discloses in, separate the casing through setting up and separate for first space and second space with the fender piece, arrange the explosive cartridge in the first space that the orientation was treated the blasting layer, the blasting layer is treated to the orientation when can making the explosive cartridge blast, avoid the blasting of explosive cartridge's when detonating everywhere, the directionality of blasting unit blasting has been strengthened, the directional blasting of blasting unit has been realized, the practicality of blasting unit has been improved, the problem that the practicality that the unable directional blasting of blasting unit leads to among the prior art is low is solved, and, the explosive cartridge is arranged in the casing, certain dampproofing and anti-pollution effect can be played to this casing, avoided water or other materials to cause the pollution to the explosive cartridge and lead to the unable blasting of explosive cartridge.
On the other hand, the utility model also provides a directional drilling's blasting system, this system includes: a shell and at least two of the blasting devices; wherein, each blasting device all arranges in the shell to, have between two adjacent blasting devices and predetermine the blasting interval.
Further, the directional drilling blasting system further comprises: a support; wherein, each blasting unit all is connected with the inner wall of shell through the support.
Further, in the directional drilling blasting system, the two ends of the shell are provided with the sealing elements.
Further, in the directional drilling blasting system, the shell is a PE pipe.
The utility model discloses in, can move towards when blasting explosive cartridge among the blasting device and treat the blast layer, avoid the blasting of the four places when explosive cartridge explodes, explosion device's directional blasting has been realized, the practicality of blasting device has been improved, casing among the blasting device can play certain dampproofing and waterproofing and anti-pollution effect, and, each blasting device arranges in the shell, the shell can carry out waterproof antifouling and crashproof better, ensure that each blasting device's safety explodes, and simultaneously, place according to predetermineeing the blasting interval between two adjacent blasting devices, the homogeneity of blasting has been ensured, each blasting device's blasting scope has been guaranteed better, the blasting effect has been improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic front view of an explosion device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a directional drilling blasting system according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structural diagram of a directional drilling blasting system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a blasting interval in a directional drilling blasting system provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Blasting device embodiment:
referring to fig. 1, fig. 1 is a schematic front view structure diagram of an explosion device provided in an embodiment of the present invention. As shown, the blasting device may include: a housing 1, a cartridge 2, a detonator and a barrier 3. Wherein, the barrier member 3 is disposed in the housing 1 and connected to the inner wall of the housing 1. The barrier 3 is used for dividing the inner space of the housing 1 into a first space 11 and a second space 12, specifically, the shape of the barrier 3 matches the shape of the housing 1, the barrier 3 is tightly connected with the inner wall of the housing 1, and the first space 11 and the second space 12 divided by the barrier 3 are both closed spaces. The connection mode of the barrier 3 and the inner wall of the housing 1 may be an adhesive connection or a snap connection, and of course, other connection modes may also be adopted, which is not limited in this embodiment. Preferably, the material of the barrier 3 is a combustible material.
Explosive cartridge 2 contains explosive, and explosive cartridge 2 is solid. Stick of explosive 2 may include: the explosive is wrapped by the combustible piece to form a solid structure. The combustible piece can adopt combustible paper special for the blasting device, and the explosive can adopt water-resistant coal mine ammonium nitrate explosive. A detonator is inserted into the cartridge 2 for igniting the cartridge 2 in the presence of an open flame or at elevated temperatures. In this embodiment, stick 2 may have a diameter of 50mm to 80mm and a length of 100mm to 300 mm. The detonator can be 2 detonators, and the 2 detonators can be all mine fire detonators.
The cartridge 2 is placed in a first space 11, the first space 11 being intended to be placed towards the layer to be exploded. Specifically, stick of explosive 2 is within first space 11 but is not connected to the inner wall of housing 1. Preferably, the size of stick 2 is matched to the size of first space 11 so that stick 2 is properly positioned within first space 11. The second space 12 may be left idle, i.e. no object is placed in the second space 12, of course, the second space 12 may also be filled with combustible material to facilitate combustion. The radial distance of the second space 12 is larger than 1 cm. The layer to be blasted can be a coal layer, a mineral layer and the like.
It can be seen that, in this embodiment, separate casing 1 for first space 11 and second space 12 through setting up to separate piece 3, arrange explosive cartridge 2 in the first space 11 of the orientation treating blasting layer, can make explosive cartridge 2 orientation treat blasting layer when blasting, avoid blasting everywhere when explosive cartridge 2 detonates, the directionality of blasting device blasting has been strengthened, the directional blasting of blasting device has been realized, the practicality of blasting device has been improved, the problem that the practicality that the unable directional blasting of blasting device leads to among the prior art is low is solved, and, explosive cartridge 2 arranges in casing 1, this casing 1 can play certain dampproofing and anti-pollution effect, avoided water or other materials to cause the pollution to explosive cartridge 2 and lead to the unable blasting of explosive cartridge 2.
In the above embodiment, casing 1 can be waterproof casing, can prevent the erosion of water effectively, has avoided explosive cartridge 2 to be unable the blasting because of weing, greatly reduced the degree of difficulty that the explosion device stored.
To sum up, the embodiment can make orientation treat the blast layer when blasting explosive cartridge 2, avoids blasting everywhere when blasting explosive cartridge 2, has strengthened the directionality of blasting of blast device, has realized blast device's directional blasting, has improved blast device's practicality to, in casing 1 was arranged in to explosive cartridge 2, this casing 1 can play certain dampproofing and waterproofing and anti-pollution effect, avoids water or other materials to cause the unable blasting of explosive cartridge 2 that the pollution leads to explosive cartridge 2.
Blasting system embodiment:
the embodiment also provides a directional drilling blasting system. Referring to fig. 2, fig. 2 is a schematic structural diagram of a directional drilling blasting system according to an embodiment of the present invention. As shown, a directional drilling blasting system may include: a housing 4 and at least two of the above-mentioned blasting devices 5. Each blasting device 5 is arranged in the shell 4, and a preset blasting interval is reserved between every two adjacent blasting devices 5. The specific implementation process of the blasting device 5 may be as described above, and this embodiment is not described herein again.
In particular, the housing 4 may be a PE tube. Both ends of the housing 4 are provided with sealing members to seal both ends of the housing 4. The sealing member can be a waterproof layer, and can also be other sealing members that can play waterproof, antifouling and crashproof effects, and this embodiment does not do any restriction to this. Of course, both ends of the housing 4 may be wax-sealed, glue-sealed, or the like. Each blasting device 5 may be connected to the inner wall of the casing 4 such that each blasting device 5 is fixed within the casing 4. The connection mode of each blasting device 5 and the inner wall of the housing 4 may be an adhesive connection or the like, and of course, other connection modes are also possible, which is not limited in this embodiment.
The preset blasting interval is a distance between central axes of any two adjacent blasting devices, and in the implementation, the preset blasting interval may be determined according to an actual situation, which is not limited in any way in the present embodiment, and in the present embodiment, the preset blasting interval may be calculated according to a formula, as shown in fig. 4, fig. 4 is a schematic diagram of the blasting interval in the directional drilling blasting system provided in the embodiment of the present invention1×cosα1+R2×cosα2Calculating a preset blasting interval B, wherein R1And R2Radius of the fracture zone of two adjacent blasting devices respectively, α1At a first blasting angle, α2At a second blasting angle, α1Is taken as 0<a1≤60°，α2Is taken as 0<a2Less than or equal to 60 degrees, wherein the first blasting angle α1A second blasting angle α, an included angle formed by the connecting line between the center of one of the blasting circles and the connecting line between the centers of two adjacent blasting circles2The included angle is formed by a connecting line between one intersection point of the blasting circles generated by the two adjacent blasting devices when blasting and the center of the other blasting circle and a connecting line between the two centers.
Referring to fig. 4, when two adjacent blasting devices 5 blast, two blasting circles are respectively generated, and the radius of each blasting circle is the radius R of the fracture zone of each blasting device1And R2The intersection of the two blasting circles has two intersection points which are symmetrical with respect to the line connecting the centers of the two blasting circles, the line connecting one of the intersection points (point A at the top in fig. 4) with the center of one of the blasting circles (point B at the center of the left blasting circle in fig. 4) is designated as a connecting line AB, the length of which is the radius of the blasting circle (the left blasting circle in fig. 4), the line connecting the intersection point A with the center of the other blasting circle (point C at the center of the right blasting circle in fig. 4) is designated as a connecting line AC, the length of which is the radius of the blasting circle (the right blasting circle in fig. 4), the line connecting the centers of the two blasting circles is designated as a connecting line BC, and the angle between the connecting line AB and the connecting line BC is the first blasting angle α1The included angle between the connecting line AC and the connecting line BC is a second blasting angle α2。
Preferably, the explosive cartridges 2 in the two blasting devices have the same diameter phi and the same radius coefficient k of the fissure zones, so that the radii R of the fissure zones of the two blasting devices are the same, and the first blasting angle α is the same1And a second blast angle α2When B is equal to 2 × R1×cosα1Or B ═ 2 × R2×cosα2In this embodiment, the first blast angle α1And a second blast angle α2Are all taken at 45 degrees.
The installation process of the embodiment is to predetermine the preset blasting interval, then to place the blasting devices 5 in the shell 4 in sequence according to the preset blasting interval, and to connect the blasting devices 5 with the inner wall of the shell 4, finally, to seal the two ends of the shell 4 by wax, so as to make the two ends of the shell 4 waterproof and antifouling, wherein, in the embodiment, the method to determine the preset blasting interval is to select the radius coefficient k of the crack area and the first blasting angle α in advance1And a second blast angle α2If the radius coefficient k of the fracture zone is 120, the first blasting angle α1And a second blast angle α2Measuring the diameter phi of the explosive roll 2 of each blasting device at 45 degrees, and substituting the selected fracture area radius coefficient k and the measured value of the diameter phi of the explosive roll 2 into a formula R phi × k to calculateThe radius R of the fracture zone of each blasting device is obtained, and then the radius R of the fracture zone of two adjacent blasting devices is obtained1And R2And a selected first blast angle α1And a second blast angle α2Substituting the numerical value of (B) into the formula (R)1×cosα1+R2×cosα2And calculating a preset blasting interval B.
It can be seen that, in this embodiment, can face when blasting explosive cartridge 2 among the blasting unit 5 treats the blast layer, avoid the blasting of the everywhere when explosive cartridge 2 detonates, the directional blasting of blasting unit 5 has been realized, the practicality of blasting unit 5 has been improved, casing 1 among the blasting unit 5 can play certain dampproofing and waterproofing and anti-pollution effect, and, each blasting unit 5 is arranged in shell 4, shell 4 can carry out waterproof antifouling and crashproof better, ensure the safe detonation of each blasting unit 5, and simultaneously, place according to predetermineeing the blasting interval between two adjacent blasting units 5, the homogeneity of blasting has been ensured, each blasting unit 5's blasting scope has been guaranteed better, the blasting effect has been improved.
Referring to fig. 3, fig. 3 is a schematic cross-sectional structural diagram of a directional drilling blasting system according to an embodiment of the present invention. As shown in the figure, in the above embodiment, the blasting system may further include: a bracket 6. Each blasting device 5 may be connected to the inner wall of the casing 4 through a bracket 6, specifically, each blasting device 5 may be disposed at a central position of the casing 4, and each blasting device 5 may be connected to the inner wall of the casing 4 through a bracket 6. The support 6 may include a plurality of support rods, each blasting device 5 is disposed at the center of the housing 4, one end of each support rod is connected to the housing of each blasting device 5, and the other end of each support rod is connected to the inner wall of the housing 4. Preferably, the support rod is a combustible rod.
It can be seen that, in this embodiment, by providing the bracket 6, the blasting devices 5 can be better fixed to the inner wall of the casing 4, and the positions of the blasting devices 5 in the casing 4 are ensured to be consistent, thereby effectively improving the blasting effect.
The following description will be given of the operation of the directional drilling blasting system applied to the coal seam to be loosened: and drilling a directional hole from the ground to a preset position in the coal seam to be loosened by using a directional drilling tool. Generally, the directional hole is placed at the bottom of the coal seam to be loosened. Then, place each ignition in shell 4 according to foretell preset blasting interval in proper order, each ignition can be connected with the inner wall of shell 4 through support 6 to set up the sealing member at two tip of shell 4, also can carry out wax sealing or glue to two tip of shell 4 and seal, in order to play waterproof, anti-pollution and crashproof effect. The explosive cartridge 2 in the first space 11 of the blasting device 5 is then directed towards the coal seam to be loosened, and the housing 4 is thus oriented. Fixing a directional drilling tool with one end (the left end shown in figure 2) of the shell 4 according to the determined placing direction of the shell 4, conveying the shell 4 to a coal seam to be loosened in the directional hole by using the directional drilling tool, adding water into the directional drilling tool to pressurize after reaching a preset position, separating the directional drilling tool from the shell 4 by using water pressure, placing the shell 4 in the directional hole, and lifting the directional drilling tool. Combustible gas such as oxygen is input into the coal seam channel, and the combustible gas is ignited by using an ignition device. When open fire burns to being close to blasting unit 5 along the coal seam passageway, each blasting unit 5 is lighted to open fire, realizes treating not hard up of not hard up coal seam. Alternatively, each blasting device 5 may be detonated at high temperature under the action of the hot gas flow. The loosening range of the coal seam to be loosened depends on the explosive quantity in the explosive cartridge 2 in the blasting device 5 and the quality of the coal seam to be loosened.
When the directional drilling blasting system is applied to a coal seam to be loosened, each blasting device 5 is placed in the coal seam to be loosened according to the blasting interval, each blasting device is ignited, the coal seam to be loosened can be loosened, the fracture rate of the coal seam to be loosened is increased, so that a gasifying agent for coal gasification is fully contacted with the coal seam, the difficulty of coal gasification is reduced, the efficiency of coal gasification is improved, the blasting interval is determined, the blasting uniformity is effectively improved, and the blasting range of each blasting device 5 is ensured.
It should be noted that the blasting device and the directional drilling blasting system with the blasting device in the invention are referred to each other.
In conclusion, in this embodiment, can face when blasting explosive cartridge 2 among the blasting unit 5 treats the blast layer, avoid the blasting of the everywhere when explosive cartridge 2 detonates, the directional blasting of blasting unit 5 has been realized, the practicality of blasting unit 5 has been improved, casing 1 among the blasting unit 5 can play certain dampproofing and waterproofing and anti-pollution effect, and, each blasting unit 5 is arranged in shell 4, shell 4 can carry out waterproof antifouling and crashproof better, ensure the safe detonation of each blasting unit 5, and simultaneously, place according to predetermineeing the blasting interval between two adjacent blasting units 5, the homogeneity of blasting has been ensured, each blasting unit 5's blasting scope has been guaranteed better, the blasting effect has been improved.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An explosive device, comprising: the explosive cartridge comprises a shell (1), an explosive cartridge (2), a detonator and a barrier piece (3); wherein,
the barrier member (3) is connected to the inner wall of the shell (1) and is used for dividing the interior of the shell (1) into a first space (11) and a second space (12);
the cartridge (2) is placed in the first space (11), the first space (11) being intended to be placed towards a layer to be blasted; the detonator is inserted into the explosive cartridge (2).
2. Blasting device according to claim 1, characterized in that the casing (1) is a waterproof casing.
3. Blasting apparatus according to claim 1, wherein the second space (12) is filled with combustible material.
4. A directional drilling blasting system, comprising: -a casing (4) and at least two blasting devices (5) according to any of claims 1 to 3; wherein,
each blasting device (5) is arranged in the shell (4), and a preset blasting interval is reserved between every two adjacent blasting devices (5).
5. A directional drilling blasting system according to claim 4, further comprising: a bracket (6); wherein,
each blasting device (5) is connected with the inner wall of the shell (4) through the bracket (6).
6. A directional drilling blasting system according to claim 4, characterized in that both ends of the casing (4) are provided with seals.
7. A directional drilling blasting system according to claim 4, wherein the casing (4) is a PE tube.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017200844288 | 2017-01-20 | ||
| CN201720084428 | 2017-01-20 |
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| CN206573020U true CN206573020U (en) | 2017-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907139A (en) * | 2017-01-20 | 2017-06-30 | 徐斌 | The method that demolition set, blasting system and underground gasification coal seam loosen in advance |
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2017
- 2017-03-17 CN CN201720262262.4U patent/CN206573020U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907139A (en) * | 2017-01-20 | 2017-06-30 | 徐斌 | The method that demolition set, blasting system and underground gasification coal seam loosen in advance |
| CN106907139B (en) * | 2017-01-20 | 2023-09-08 | 徐斌 | Blasting device, blasting system and underground gasified coal seam pre-loosening method |
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