CN113587753A - Axial non-coupling water spaced charging structure and smooth blasting method using same - Google Patents
Axial non-coupling water spaced charging structure and smooth blasting method using same Download PDFInfo
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- CN113587753A CN113587753A CN202110963541.4A CN202110963541A CN113587753A CN 113587753 A CN113587753 A CN 113587753A CN 202110963541 A CN202110963541 A CN 202110963541A CN 113587753 A CN113587753 A CN 113587753A
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- 238000005422 blasting Methods 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008878 coupling Effects 0.000 title claims description 7
- 238000010168 coupling process Methods 0.000 title claims description 7
- 238000005859 coupling reaction Methods 0.000 title claims description 7
- 238000004880 explosion Methods 0.000 claims abstract description 154
- 239000011435 rock Substances 0.000 claims abstract description 34
- 239000002360 explosive Substances 0.000 claims abstract description 29
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000005474 detonation Methods 0.000 claims description 41
- 238000010276 construction Methods 0.000 claims description 18
- 230000000977 initiatory effect Effects 0.000 claims description 17
- 238000009412 basement excavation Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 8
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to an axial uncoupled water spaced charging structure and a smooth blasting method using the same, and belongs to the technical field of blasting. The axial uncoupled water spaced charging structure comprises a tubular water bag I, a cartridge, a tubular water bag II, stemming and a detonating cord; the tubular water bag I is placed at the bottom of the blast hole, the front end of the tubular water bag I is connected with the explosive roll, the front end of the explosive roll is connected with the tubular water bag II, the front end of the tubular water bag II is filled with stemming, and the whole blast hole penetrates to the bottom of the explosive roll through the detonating cord. The integral steps of the smooth blasting method are that a main blast hole is blasted first, a smooth blast hole is blasted again, and in a main blast area: and (3) firstly detonating a column of the outermost layer far away from the optical explosion hole, then simultaneously detonating the remaining main explosion holes, wherein the optical explosion hole comprises: and detonating from the center to the two sides in sequence. The invention can greatly reduce blasting vibration, has small damage to the reserved rock mass, small vibration, less damage, small disturbance to the reserved rock mass, good stability of the formed side slope, good effect, and can reduce the generation of blasting dust, and the like.
Description
Technical Field
The invention relates to an axial uncoupled water spaced charging structure and a smooth blasting method using the same, and belongs to the technical field of blasting.
Background
The smooth blasting is that the main body is blasted to excavate partial rocks to form an effective face to the empty, and then a smooth excavation surface is formed by blasting a light blasting layer serving as a protective layer through light blasting holes arranged on a contour line. Smooth blasting is a more advanced controlled blasting technique. The method is widely applied and vigorously developed in the construction of tunnels, slopes, hydropower stations and the like. Smooth blasting is a technology for controlling the working range and direction of blasting, so that the blasted rock surface is smooth and flat, the rock surface is prevented from cracking, the engineering quantity of over-excavation, under-excavation and supporting is reduced, the stability of rocks is improved, and the vibration effect of blasting is reduced, so that the rock excavation profile is controlled.
At present, most smooth blasting adopts all that smooth blasting hole detonators simultaneously, but the detonation can cause blasting vibration big simultaneously, and is great relatively to the damage that remains the rock mass in advance, is unfavorable for forming the better slope wall of stability. Secondly, the smooth blasting technology at the present stage is mostly in a coupled powder charging structure with no air coupled powder charging or with the blast hole wall, the smooth blasting hole usually adopts a mode of less powder charging and more punching, the drilling cost can be increased, the dust amount generated by blasting cannot be controlled, and the influence on workers and the environment of a construction site is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing an axial uncoupled water spaced charging structure and a smooth blasting method using the same, which can greatly reduce blasting vibration, have small damage to a reserved rock mass, small vibration and damage, have small disturbance to the reserved rock mass, have good stability and effect of a formed side slope, and can reduce the generation of blasting dust.
The technical scheme adopted by the invention is as follows: an axial uncoupled water spaced charging structure comprises a tubular water bag I12, a cartridge 11, a tubular water bag II9, stemming 8 and a detonating cord 7; the tubular water bag I12 is placed at the bottom of the blast hole, the front end of the tubular water bag I12 is connected with the cartridge 11, two sides of the cartridge 11 are provided with air 10 or are directly coupled with the wall of the blast hole, the cartridge 11 adopts radial air non-coupled charging or radial air coupled charging, the front end of the cartridge 11 is connected with the tubular water bag II9, the front end of the tubular water bag II9 is filled with stemming 8, and the whole blast hole penetrates to the bottom of the cartridge 11 through the detonating cord 7.
A smooth blasting method comprises the following specific steps:
(1) determining the positions of a main explosion area 2 and a light explosion hole 3 according to construction requirements, arranging a plurality of rows of main explosion holes 4 in the main explosion area 2, uniformly arranging the light explosion holes 3 on a contour line according to a contour line of a designed side slope, and positioning the main explosion area 2 at one side of the light explosion holes 3;
(2) the main explosion hole 4 and the light explosion hole 3 are both connected with a detonator, and according to construction design requirements, a proper explosive type is selected, and hole pattern parameters, a charging structure, an initiation network and time delay initiation time are designed;
(3) the axial non-coupling water spaced charging structure is adopted in the light explosion hole 3, the electronic detonator is used for accurate delay detonation, and the whole detonation sequence is as follows: the main explosion hole 4 in the main explosion area 2 is exploded firstly, then the optical explosion hole 3 is exploded again, and the initiation sequence in the main explosion area 2 is as follows: the outermost row far away from the light explosion hole 3 is exploded firstly, then the rest main explosion holes 4 are exploded simultaneously, and the explosion sequence of the light explosion hole 3 is as follows: and detonating from the center to the two sides in sequence.
Preferably, the multiple rows of main blasting holes 4 in the main blasting area 2 are distributed at equal hole pitch and equal interval.
Specifically, the pitch of the light explosion holes 3 is 30-80 cm, the row pitch of the light explosion holes and the main explosion area 2 is 30-160 cm, the row pitch and the pitch of the main explosion holes 4 in the main explosion area are 100-120 cm and 60-80 cm respectively, the drilling diameter of the main explosion holes 4 is 30-100 mm, and the diameter D of the light explosion holes 3 is 30-50 mm; the drilling depth of the light explosion hole 3 is less than 12.00 m.
Preferably, for a complete hard rock, the hole distance of the light blasthole 3 and the main blasthole 4 is the maximum; for broken rock, the hole distance of the light and main blastholes 3, 4 is taken to be the minimum.
Preferably, the explosive is selected from explosives with low density, low detonation velocity and good detonation propagation performance.
Preferably, the explosive is used#2 rock ammonium nitrate explosive.
Preferably, the total time from the initiation of the primary booster hole 4 to the initiation of the light booster hole 3 is the sum of the delay times of the detonator segments.
Preferably, the interval between the detonation of the light blast hole 3 and the detonation of the adjacent main blast hole 4 is as follows: hard rock is less than 100ms and soft rock is over 150 ms.
The invention has the beneficial effects that:
(1) according to the invention, through parameter design of the distribution of the main explosion hole and the light explosion hole, the delayed detonation time, the detonation network and the like, the proper delay time is selected to realize the delayed detonation of the light explosion hole, and after the primary explosion area is exploded, the explosion of the light explosion layer is carried out, namely, the light explosion hole is detonated after the main explosion hole. Therefore, the blasting vibration frequency can be reduced, a smooth and flat side slope wall is formed after the light blasting, the construction efficiency is improved, the formed side slope has higher stability, and secondary construction is not needed;
(2) the light explosion hole adopts an axial non-coupling water spaced loading structure, so that the peak pressure of explosive explosion on the hole wall of the light explosion hole is reduced, and the generation of explosion dust is reduced.
Drawings
FIG. 1 is a diagram of a slope blasting environment and arrangement of blast holes;
FIG. 2 is a layout diagram of a main explosion area and a light explosion hole blast hole;
FIG. 3 is a diagram of a detonating circuit;
figure 4 is a schematic diagram of an axially uncoupled water-space charge.
In the figure: 1-slope environment; 2-main explosion area; 3, explosion hole; 4-main blast hole 4; 7-detonating cord; 8, stemming; 9-tubular water bag II; 10-air; 11-medicated roll; 12-a tubular water bag I, a first row of main explosion holes 4-1, the rest main explosion holes 4-2, a central light explosion hole 3-1, a first light explosion hole 3-2 and a second light explosion hole 3-3.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to the description.
Example 1: as shown in fig. 1-4, an axial uncoupled water spaced-charge structure comprises a tubular water bag I12, a cartridge 11, a tubular water bag II9, stemming 8 and a detonating cord 7; the tubular water bag I12 is placed at the bottom of the blast hole, the front end of the tubular water bag I12 is connected with the cartridge 11, two sides of the cartridge 11 are provided with air 10 or are directly coupled with the wall of the blast hole, the cartridge 11 adopts radial air non-coupled charging or radial air coupled charging, the front end of the cartridge 11 is connected with the tubular water bag II9, the front end of the tubular water bag II9 is filled with stemming 8, and the whole blast hole penetrates to the bottom of the cartridge 11 through the detonating cord 7.
The invention adopts an axial non-coupling water-spaced charging structure, a detonation network for hole-by-hole detonation is arranged in a slope environment to be excavated, accurate delay detonation is realized through digital electronic detonator control, and after detonation, a better half hole wall can be formed on a slope wall.
A smooth blasting method is disclosed, the surrounding environment and blast hole layout of the slope engineering of the embodiment are shown in figure 1, the rock property is medium hard rock, the rock property is stable, and a joint crack does not develop;
the method comprises the following specific steps:
(1) according to construction requirements, the positions of a main explosion area 2 and a light explosion hole 3 are determined, according to an excavated contour line (straight line excavation), the arrangement parameters of the main explosion hole 4 and the light explosion hole 3 in a slope explosion area are designed, a plurality of rows of the main explosion holes 4 are arranged in the main explosion area 2, the light explosion holes 3 are uniformly arranged on the contour line according to the designed contour line of the slope excavation, and the main explosion area 2 is positioned on one side of the light explosion hole 3;
(2) the main explosion hole 4 and the light explosion hole are both connected with a detonator, and according to construction design requirements, a proper explosive type is selected, and hole pattern parameters, a charging structure, an initiation network and time delay initiation time are designed;
(3) the optical explosion hole 3 is internally provided with the axial non-coupling water spaced charging structure, as shown in fig. 4, so that accurate delay detonation is controlled by a digital electronic detonator; meanwhile, the uncoupled explosive in the main explosion hole 4 is controlled by a digital electronic detonator to accurately delay the explosion, and the whole explosion sequence is as follows: the main explosion hole 4 in the main explosion area 2 is exploded firstly, then the optical explosion hole 3 is exploded again, and the initiation sequence in the main explosion area 2 is as follows: the outermost row far away from the light explosion hole 3 is exploded firstly, then the rest main explosion holes 4 are exploded simultaneously, and the explosion sequence of the light explosion hole 3 is as follows: and detonating from the center to the two sides in sequence.
As shown in fig. 3, for one instance of this example, the initiation sequence is: the first row of main explosion holes 4-1 are detonated, then the rest main explosion holes 4-2 are detonated simultaneously, then the central optical explosion hole 3-1 is detonated, and then the first optical explosion hole 3-2 and the second optical explosion hole 3-3 are detonated in sequence. If the number of the light pop holes 3 is an even number, the number of the central light pop hole 3-1 is two.
Furthermore, the multiple rows of main explosion holes 4 in the main explosion area 2 are distributed at equal hole pitch and equal interval.
Further, the pitch of the light explosion holes 3 is 80cm, the row pitch of the light explosion holes and the row pitch of the main explosion area 2 are 160cm, the row pitch and the pitch of the main explosion holes 4 in the main explosion area are 120cm and 80cm respectively, the drilling diameter of the main explosion holes 4 is 100mm, and the diameter D of the light explosion holes 3 is 50 mm; the drilling depth of the light explosion hole 3 is 11.00 m.
Further, for complete hard rock, the hole distance of the light blast hole 3 and the main blast hole 4 is large; for broken rock, the hole distance of the light blasthole 3 and the main blasthole 4 takes a small value.
Furthermore, the explosive is selected from explosives with low density, low detonation velocity and good detonation propagation performance.
Further, the explosive adopts#2 rock ammonium nitrate explosive.
Further, the total time from the initiation of the main explosion hole 4 to the initiation of the optical explosion hole 3 is the sum of the delay time of each section of detonator, and the shorter the time interval is, the more the effect of leveling the wall surface is ensured when the smooth blasting is implemented. The initiation timing difference between the primary detonation zone 2 and the light detonation hole 3 should be reduced as much as possible.
Furthermore, the main explosion area 2 accurately controls delayed initiation through a digital electronic detonator, and the optical explosion hole is detonated by adopting a detonating cord.
Furthermore, the digital electronic detonator is an electric detonator which controls the detonation process by adopting an electronic control module, wherein the electronic control module is a special circuit module which is arranged in the digital electronic detonator, has the functions of controlling the detonation delay time and the detonation energy, is internally provided with a detonator identity information code and a detonation password, can test the self function and performance and the electrical property of a detonator ignition element, and can communicate with a detonation controller and other external control equipment.
Further, the digital electronic detonator is a commercially available product.
Furthermore, the electronic detonator is selected from a strong detonator MFB-50, a CZQBQ-50, a 90, 150, 200 type and the like.
Furthermore, due to the design of the orifice blockage of the blast hole, the orifice blockage can improve the explosion energy utilization rate, a water bag is reserved in the hole after the orifice is sealed by stemming, and when explosive explodes, detonation waves can excite water impact waves and attenuate the pressure of the detonation waves, so that the rock mass reserved on the hole wall can not be obviously damaged. Moreover, when the shock wave meets the orifice blockage in the outward transmission process, the pressure at the position can be increased rapidly, so that the expansion power is increased rapidly, and the energy for crushing the rock at the orifice part is increased; meanwhile, the static pressure action of the detonation gas at the bottom of the hole is enhanced, so that the rock penetrating through the crack below the optical explosion hole 3 is separated from the original rock, and the smooth and flat wall surface after explosion is favorably realized. During smooth blasting, the general length of 4 drill way blockages of main explosion hole is 2 ~ 3m, and 3 drill way blockages of light explosion hole length is 1 m.
Furthermore, the plugging materials of the light explosion holes 3 and the main explosion holes 4 are selected from sand and stone mixed for plugging.
Further, the interval time between the detonation of the light explosion hole 3 and the detonation of the adjacent main explosion hole 4 is as follows: hard rock is less than 100ms and soft rock is over 150 ms.
Example 2: the construction environment and the construction standard of the present embodiment are different from those of example 1.
The smooth blasting method of sequentially detonating from the center to the two sides under the requirement of the construction standard is basically the same as the embodiment 1, and the difference is that: the diameter of the light explosion hole 3 is 45mm, and the hole distance is 60 cm; the diameter of the main explosion hole 4 is 75mm, the hole pitch is 70cm, and the row pitch is 110 cm. The excavated side slope wall has a certain angle with the ground, and belongs to an inclined side slope wall. According to the construction requirement, the contour line of the slope excavation is an arc line, so the arrangement of the light explosion holes is an arc line with 80 degrees of radian, the hole depth of the main explosion hole 4 reaches 11m, and the hole depth of the light explosion hole 3 is 10m due to the fact that the excavated slope is high. The main blasting hole 4 and the drilling hole of the light blasting hole 3 form a certain angle, the main blasting hole 4 forms an included angle of 80 degrees with the ground, and the light blasting hole 3 forms an included angle of 70 degrees with the ground. According to different construction standard requirements, the arrangement parameters of blast holes are changed, and the detonating network is also changed. The main explosion area is row-to-row delay detonation, the delay time is 25ms, the light explosion hole 3 is the same as the detonation sequence of the example 1, the light explosion hole 3 is detonated after the main explosion area 2 is detonated, and the delay time of the light explosion hole 3 is 25 ms. The plugging and charging structure of the main explosion hole 4 and the light explosion hole 3 is the same as that of the example 1.
Example 3: and the charge structures of the smooth blasting hole 3 and the main blasting hole 4 are adjusted, so that the peak pressure to the hole wall in the blasting process is reduced.
The method of slope excavation smooth blasting of this example is substantially the same as that of example 1, except that: the diameter of the light explosion hole 3 is 30mm, and the hole distance is 30 cm; the diameter of the main explosion hole 4 is 50mm, the hole pitch is 50cm, and the row pitch is 100 cm. The primary explosion region 2 is simultaneously detonated, the detonation sequence of the optical explosion hole 3 is the same as that of the example 1, and the delay time between holes is 10 ms. The contour line of the excavated side slope has a certain radian and is 15 degrees, the main blasting holes 4 are perpendicular to the ground, and the light blasting holes 3 form an included angle of 70 degrees with the ground, so that an inclined side slope wall is formed, and the formed side slope is more stable. The uncoupled charging structure in the example is shown in fig. 4, the cartridge in the light explosion hole 3 is uncoupled with air in the radial direction, so that the full utilization of detonation gas is facilitated, the peak pressure of explosive explosion directly acting on the hole wall of the light explosion hole 3 is reduced, the half-hole rate is improved, a more complete slope wall can be formed after explosion, and the generation of explosion dust is facilitated to be reduced due to the fact that the water bag is placed in the light explosion hole 3.
In the actual construction process, the smooth blasting technology is fully and reasonably used, so that the construction efficiency and the construction safety can be effectively improved, the engineering progress is improved to a certain extent, and the method can be embodied in the following points: firstly, after the smooth blasting technology is applied, the wall surface of the side slope can be smooth and flat, the design requirement of a contour line is met, and the integrity of the rock of the side slope wall is high and the stability is high; secondly, because an axially uncoupled water spaced charging structure is adopted, less dust is generated compared with the traditional blasting; thirdly, because of adopting smooth blasting technology, the rock wall surface does not need to be secondarily treated, thus greatly reducing the engineering cost and simultaneously greatly saving engineering raw materials. Compared with the traditional blasting, the explosive quantity used in the smooth blasting is small, and the utilization rate of the blast hole is greatly improved.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides an axial uncoupled water space charging structure which characterized in that: comprises a tubular water bag I (12), a cartridge (11), a tubular water bag II (9), stemming (8) and a detonating cord (7); the tubular water bag I (12) is placed at the bottom of the blast hole, the front end of the tubular water bag I (12) is connected with the explosive roll (11), air (10) is arranged on two sides of the explosive roll (11) or is directly coupled with the wall of the blast hole, radial air-uncoupled explosive charging or radial air-coupled explosive charging is adopted for the explosive roll (11), the front end of the explosive roll (11) is connected with the tubular water bag II (9), the front end of the tubular water bag II (9) is filled with stemming (8), and the whole blast hole penetrates through the bottom of the explosive roll (11) through the detonating cord (7).
2. A smooth blasting method is characterized in that: the method comprises the following specific steps:
(1) according to construction requirements, the positions of a main explosion area (2) and a light explosion hole (3) are determined, a plurality of rows of main explosion holes (4) are arranged in the main explosion area (2), the light explosion hole (3) is uniformly arranged on a contour line according to a contour line of designed side slope excavation, and the main explosion area (2) is located on one side of the light explosion hole (3);
(2) the main explosion hole (4) and the light explosion hole (3) are both connected with a detonator, and according to construction design requirements, a proper explosive type is selected, and hole network parameters, a charging structure, an initiation network and time delay initiation time are designed;
(3) the axial non-coupling water spaced charging structure of claim 1 is adopted in the light explosion hole (3), the electronic detonator is used for accurate delay detonation, and the whole detonation sequence is as follows: the main explosion hole (4) in the main explosion area (2) is exploded firstly, then the optical explosion hole (3) is exploded again, and the initiation sequence in the main explosion area (2) is as follows: the outermost row far away from the light explosion hole (3) is exploded firstly, then the rest main explosion holes (4) are exploded simultaneously, and the explosion sequence of the light explosion hole (3) is as follows: and detonating from the center to the two sides in sequence.
3. A method of smooth blasting according to claim 2, wherein: the multiple rows of main explosion holes (4) in the main explosion area (2) are distributed at equal hole distance and equal distance.
4. A method of smooth blasting according to claim 2, wherein: the hole pitch of the light explosion holes (3) is 30-80 cm, the row pitch of the light explosion holes and the main explosion area (2) is 30-160 cm, the row pitch and the hole pitch of the main explosion holes (4) in the main explosion area are 100-120 cm and 60-80 cm respectively, the drilling diameter of the main explosion holes (4) is 30-100 mm, and the diameter D of the light explosion holes (3) is 30-50 mm; the drilling depth of the light explosion hole (3) is less than 12.00 m.
5. The method of smooth blasting according to claim 4, wherein: for complete hard rock, the hole distance between the light blast hole (3) and the main blast hole (4) is large; for broken rock, the hole distance between the light blast hole (3) and the main blast hole (4) takes a small value.
6. The method of smooth blasting according to claim 2, wherein: the explosive is selected from explosives with low density, low detonation velocity and good detonation propagation performance.
7. The method of smooth blasting according to claim 6, wherein: explosiveBy using#2 rock ammonium nitrate explosive.
8. The method of smooth blasting according to claim 2, wherein: the total time from the initiation of the main explosion hole (4) to the detonation of the optical explosion hole (3) is the sum of the delay time of each section of detonator.
9. The method of smooth blasting according to claim 8, wherein: the detonation interval time of the light detonation hole (3) and the adjacent main detonation hole (4) is as follows: hard rock is less than 100ms and soft rock is over 150 ms.
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| CN202110963541.4A CN113587753A (en) | 2021-08-20 | 2021-08-20 | Axial non-coupling water spaced charging structure and smooth blasting method using same |
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| CN202110963541.4A CN113587753A (en) | 2021-08-20 | 2021-08-20 | Axial non-coupling water spaced charging structure and smooth blasting method using same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001605A (en) * | 2021-11-24 | 2022-02-01 | 昆明理工大学 | Smooth blasting method for tunneling |
| CN114111481A (en) * | 2021-11-17 | 2022-03-01 | 乌海市安盛***服务有限责任公司 | Dynamic dust-suppression body to be exploded and explosion method |
| CN114674190A (en) * | 2022-03-07 | 2022-06-28 | 河北金隅鼎鑫水泥有限公司 | Mine smooth blasting method |
-
2021
- 2021-08-20 CN CN202110963541.4A patent/CN113587753A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111481A (en) * | 2021-11-17 | 2022-03-01 | 乌海市安盛***服务有限责任公司 | Dynamic dust-suppression body to be exploded and explosion method |
| CN114001605A (en) * | 2021-11-24 | 2022-02-01 | 昆明理工大学 | Smooth blasting method for tunneling |
| CN114674190A (en) * | 2022-03-07 | 2022-06-28 | 河北金隅鼎鑫水泥有限公司 | Mine smooth blasting method |
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Application publication date: 20211102 |