CN115854803B - Rock-soil control blasting method for old industrial factory - Google Patents
Rock-soil control blasting method for old industrial factory Download PDFInfo
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- CN115854803B CN115854803B CN202211495143.5A CN202211495143A CN115854803B CN 115854803 B CN115854803 B CN 115854803B CN 202211495143 A CN202211495143 A CN 202211495143A CN 115854803 B CN115854803 B CN 115854803B
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Abstract
The invention belongs to the technical field of blasting, and particularly relates to a rock-soil control blasting method for old industrial factories, which comprises the following steps of rock-soil area removal, factory area protection and factory area protection: selecting a region with high hardness in a rock-soil region by a hardness meter and marking blasting points; at the blasting points marked in the above steps, main hole slots are sequentially drilled by a drilling device, and then explosive filling holes are drilled on two sides of each main hole slot by the drilling device. The invention can select the explosion point based on the hardness of the rock-soil area, can effectively avoid the phenomenon of excessive explosion or insufficient explosion of part of the explosion point, improves the explosion effect, is more beneficial to the safety of the factory around the factory to be dismantled, can not wave around communication and power supply cables, achieves better control explosion effect, can buffer and block the shock wave to the non-explosion areas on the two sides, and has a certain dust reducing effect.
Description
Technical Field
The invention belongs to the technical field of blasting, and particularly relates to a rock-soil control blasting method for old industrial factories.
Background
The blasting control means a blasting method for strictly controlling blasting energy and blasting scale through a certain technical measure, so that the sound, vibration, flying stone, dumping direction, damage area, collapse scattering range of a damaged object and the like of blasting are within a specified limit, and the blasting quality control is particularly important in the reconstruction process of old industrial factories.
When the old industrial plant is demolished and rebuilt, the ground rock and soil is required to be blasted for subsequent rebuilding, while the old industrial plant is generally a traditional urban industrial plant, a plurality of plant areas exist around the old industrial plant, and the safety interval between adjacent plant areas is often smaller than 100 meters, so when the old industrial plant is blasted, how to control the blasting does not affect other plant areas is a very important problem, and because the cables of the plant area such as electricity consumption, communication and the like are arranged in a complicated way and are hidden underground, once the blasting range is controlled to wave and the cable facilities, the electricity consumption and communication of other plant areas are easily affected, and when the traditional rock and soil control is blasted, the hardness of each rock in the rock and soil layer is different, so that the effect of the blasting is different, for example, part of the rock is not blasted sufficiently, part of the rock is not separated effectively, the rock is relatively loose and is excessively blasted, so that the broken rock blocks are scattered around, and the blast waves at the place are excessively spread, so that the surrounding safety is affected, therefore, when the old industrial plant is blasted, the old control method is proposed.
Disclosure of Invention
The invention aims to solve the problems and provides a rock-soil control blasting method for old industrial factories.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a rock-soil control blasting method for old industrial factories comprises the following steps of rock-soil area removal, factory area protection and factory area protection:
s1, selecting a region with high hardness in a rock-soil region through a hardness meter and marking blasting points;
s2, sequentially drilling main hole slots at the explosion points marked in the step S1 through drilling equipment, drilling explosive filling holes at two sides of each main hole slot through the drilling equipment, wherein the two explosive filling holes at the same side are symmetrically arranged about the main hole slots at the same side, and each explosive filling hole is obliquely arranged;
s3, separating grooves at the joint between the rock-soil area and the demolition factory and the protection factory, and filling the inside of the two separating grooves with water after filling;
s4, in the step S2, quantitative explosive fillers are filled in the explosive filling holes, auxiliary leads are buried, and then all the auxiliary leads are connected together through main leads;
s5, covering a cannon cover above each main hole groove, wherein the cannon cover is required to cover two explosive filling holes on the same side.
In the above-mentioned rock-soil control blasting method for old industrial factory, the amount of explosive filler filled in each of the explosive filling holes needs to be designed according to the hardness at the blasting point measured in step S1.
In the above method for rock-soil controlled blasting in old industrial factory, the distance between the orifice of each explosive filling hole and the upper end of explosive filler filled in each explosive filling hole is not less than 40cm.
In the above rock-soil control blasting method for old industrial factory, the inclination angle of each explosive filling hole with respect to the main hole groove on the same side is set in the range of 40 ° to 60 °.
In the above-mentioned rock-soil control blasting method for old industrial factory, in the step S4, before filling the explosive into the explosive filling hole, the explosive filling hole needs to be subjected to a waterproof treatment.
In the rock-soil control blasting method of the old industrial factory, the depth of each explosive filling hole is not more than 1.5 m, and the aperture of each explosive filling hole is arranged within the range of 50mm-75 mm.
In the rock-soil control blasting method of the old industrial factory, the main hole groove is arranged in a strip shape, the hole walls on the front side and the rear side of the main hole groove are both beyond the front hole wall and the rear hole wall of the two explosive filling holes on the same side, and the groove depth of the main hole groove is greater than the vertical depth of the two explosive filling holes on the same side.
In the rock-soil control blasting method for the old industrial factory, the sections of the two separation grooves are all V-shaped, and the groove depths of the two separation grooves are larger than the depth of the explosive filling holes in the vertical direction.
Compared with the prior art, the rock-soil control blasting method for the old industrial factory has the advantages that:
1. by using the durometer to measure and mark the explosion point in the rock-soil area, on one hand, the proper amount of explosive can be selected according to the measured hardness, the explosive amount is increased for the rock-soil area with high hardness, and the explosive amount is reduced for the rock-soil area with low hardness, so that the phenomenon of excessive explosion or insufficient explosion of part of the explosion points can be effectively avoided, and the explosion effect is improved.
2. Through the main hole groove, the explosive filling hole and the slope design of the explosive filling hole that bore, can make the explosive filler that two explosive filling holes intussuseptions are filled when exploding, the one side shock wave that is close to main hole groove dashes mutually and spreads downwards to can shake garrulous to here rock fast blasting, and the explosion shock wave that keeps away from main hole groove one side is because being close to ground more, so when exploding, the explosion shock wave only can destroy the surface layer rock soil of here, is little to the deep soil destructive power in the region of rock soil district both sides, thereby be favorable to waiting to demolish the factory safety around the factory more, also can not wave communication, power supply cable around, reach better control blasting effect.
3. The cover cannon through setting up is kept away from main hole groove one side top layer soil by can compensate the explosive filling hole and receives the great rock soil scattering influence that leads to of explosive force impact, prevent that rock soil scattering from influencing personnel around, the safety of building, through two separation groove cooperation inside water liquid, can cushion the separation to demolising the explosion wave that the factory and protection factory both sides were propagated to the rock soil district, ensure that the explosion scope in rock soil district can not be swept demolishment factory and protection factory, and the water liquid can be disturbed when the explosion, and after falling down again, can possess certain effect of carrying out dust fall to the dust that the explosion produced.
Drawings
FIG. 1 is a schematic diagram of a method for controlling blasting of rock and soil in old industrial plants.
In the figure: 1. a geotechnical zone; 2. dismantling the factory area; 3. the factory is protected; 4. a main hole groove; 5. filling the hole with explosive; 6. a barrier groove; 7. an aqueous solution; 8. explosive filler; 9. a secondary lead; 10. a main lead; 11. and (5) covering the firecracker quilt.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
As shown in FIG. 1, the rock-soil control blasting method for the old industrial plant area comprises the following steps of rock-soil area 1, demolishing plant area 2, protecting plant area 3:
s1, selecting a region with large hardness in a rock-soil region 1 through a hardness meter, marking explosion points, calculating the average hardness value of the rock in the rock-soil region 1 according to the measured hardness value, and taking the average hardness value as a standard hardness value, wherein when explosive filling is carried out, a proper amount of explosive can be selected according to different hardness, so that the proper amount of explosion is improved, the phenomenon of excessive explosion or insufficient explosion of part of explosion points can be effectively avoided, and the explosion effect is improved;
s2, sequentially drilling main hole grooves 4 through drilling equipment at blasting points marked in the step S1, drilling explosive filling holes 5 on two sides of each main hole groove 4 through the drilling equipment, wherein the two explosive filling holes 5 on the same side are symmetrically arranged about the main hole grooves 4 on the same side, the explosive filling holes 5 are obliquely arranged, the inclination angle of each explosive filling hole 5 about the main hole groove 4 on the same side is in a range of 40-60 degrees, the depth of each explosive filling hole 5 is not more than 1.5 m, the aperture of each explosive filling hole 5 is in a range of 50-75 mm, the main hole grooves 4 are in strip-shaped arrangement, the hole walls on the front side and the rear side of each main hole groove 4 are all larger than the front hole wall and the rear hole wall of the two explosive filling holes 5 on the same side, the groove depth of each main hole groove 4 is larger than the vertical direction depth of the two explosive filling holes 5 on the same side, and the main hole grooves 4 mainly play a role in blocking and buffering shock waves generated during explosion in the explosive filling holes 5 on the two sides to enable the shock waves to be transmitted to the whole rock along the main hole 4 downwards to achieve the effect of fracturing;
s3, blocking grooves 6 are formed in the joint between the rock-soil area 1 and the demolishd factory area 2 and the protection factory area 3, water liquid 7 is filled in the two blocking grooves 6, the cross sections of the two blocking grooves 6 are V-shaped, the groove depths of the two blocking grooves 6 are larger than the vertical depth of the explosive filling holes 5, the filling amount of the water liquid 7 needs to enable the liquid level of the water liquid 7 to reach the notch of the blocking groove 6, the water liquid 7 is filled to replace the traditional hollow groove design, the effect of buffering and blocking explosion shock waves can be improved, and dust generated during explosion can be brought down after the water liquid 7 is oscillated and flies up and falls down again during explosion, so that dust generated during explosion can be rapidly dissipated, and the surrounding factory area is prevented from being influenced by excessive diffusion of the dust;
s4, in the step S2, quantitative explosive fillers 8 are filled in the explosive filling holes 5, auxiliary leads 9 are buried, then all the auxiliary leads 9 are connected together through main leads 10, the distance between the orifice of each explosive filling hole 5 and the upper end of the explosive filler 8 filled in each explosive filling hole 5 is not less than 40cm, the quantity of the explosive filler 8 filled in each explosive filling hole 5 is required to be designed according to the hardness of the explosion point measured in the step S1, and the calculation formula is as follows: q1=kxq 2 (Q1 is the explosive amount actually filled, k is the result of dividing the hardness value measured by the durometer by the standard rock hardness value, Q2 is the explosive filling amount at the standard rock hardness value), Q2 is calculated by the unit explosive consumption x the blasting hopper volume x k1 (k 1 is the standard rock hardness value);
before the explosive filling hole 5 is filled with the explosive, the explosive filling hole 5 needs to be subjected to waterproof treatment, so that the water filled in the blocking groove 6 is prevented from penetrating into the filled explosive filling 8 along the rock gap, and smooth detonation is affected;
s5, covering a gun cover 11 above each main hole groove 4, wherein the gun cover 11 is required to cover two explosive filling holes 5 on the same side, and the specification of the gun cover 11 is at least greater than or equal to 1m multiplied by 1m.
The principle of operation of the present invention will now be described as follows: selecting a region with high hardness in a rock-soil region 1 through a hardness meter, marking blasting points, sequentially drilling main hole grooves 4 at the marked blasting points through drilling equipment, drilling explosive filling holes 5 at two sides of each main hole groove 4 through drilling equipment, symmetrically arranging two explosive filling holes 5 at the same side relative to the main hole grooves 4 at the same side, wherein each explosive filling hole 5 is obliquely arranged, blocking grooves 6 are formed at joints between the rock-soil region 1 and a dismantling factory region 2 and a protection factory region 3, filling water liquid 7 inside the two blocking grooves 6, filling quantitative explosive filling 8 inside each explosive filling hole 5 in a step S2, burying auxiliary leads 9, connecting all auxiliary leads 9 together through main leads 10, covering a cover gun 11 above each main hole groove 4, covering the two explosive filling holes 5 at the same side by the cover gun 11, after the existing lid cannon is installed, personnel in the explosion range are cleared, surrounding plant area personnel are reminded, then explosive fillers 8 in all explosive filling holes 5 are detonated through detonators, main leads 10 and auxiliary leads 9, when the explosive fillers 8 explode, firstly, explosion waves of one side of the two explosive filling holes 5 close to the main hole groove 4 are punched and spread downwards, so that the rock at the place can be rapidly exploded and broken, and explosion shock waves of one side far away from the main hole groove 4 are closer to the ground, so that during explosion, the explosion shock waves only damage surface layer rock and soil at the place, have small damage force to deep soil of areas on two sides of the rock and soil area 1, thereby being more beneficial to safety of the plant area around the plant area to be dismantled, avoiding surrounding communication and power supply cables, achieving better control explosion effect, and simultaneously matching internal water liquid 7 through two blocking grooves 6, the device can buffer and separate the explosion waves transmitted from the rock-soil area 1 to the dismantling plant area 2 and the protection plant area 3, ensures that the explosion range of the rock-soil area 1 can not reach the dismantling plant area 2 and the protection plant area 3, and the water liquid 7 can be agitated when being exploded and can have a certain dust falling effect on dust generated by explosion after falling again.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The rock-soil control blasting method for the old industrial plant area is characterized by comprising the following steps of rock-soil area (1), demolishing plant area (2), protecting plant area (3) and:
s1, selecting a region with high hardness in a rock-soil region (1) through a hardness meter and marking blasting points;
s2, sequentially drilling main hole grooves (4) at the blasting points marked in the step S1 through drilling equipment, drilling explosive filling holes (5) at two sides of each main hole groove (4) through the drilling equipment, wherein the two explosive filling holes (5) at the same side are symmetrically arranged relative to the main hole grooves (4) at the same side, and each explosive filling hole (5) is obliquely arranged;
s3, separating grooves (6) at the joint between the rock-soil area (1) and the dismantling plant area (2) and the protecting plant area (3), and filling the inside of the two separating grooves (6) with post-filling water (7);
s4, in the step S2, quantitative explosive fillers (8) are filled in the explosive filling holes (5), auxiliary leads (9) are buried, and then the auxiliary leads (9) are connected together through main leads (10);
s5, covering a cannon cover (11) above each main hole groove (4), wherein the cannon cover (11) is required to cover two explosive filling holes (5) on the same side.
2. A method of controlled blasting of old industrial plant areas with rock and soil according to claim 1, characterized in that the amount of explosive charges (8) filled in each of said explosive charge holes (5) is designed according to the hardness at the point of blasting measured in step S1.
3. A method of rock-soil controlled blasting of old industrial plants according to claim 1, wherein the distance between the opening of each of said explosive filling holes (5) and the upper end of the explosive charge (8) filled in the explosive filling hole (5) is not less than 40cm.
4. A method of rock-soil controlled blasting of old industrial plants according to claim 1, characterized in that each of said explosive filling holes (5) is arranged with an inclination angle in the range of 40 ° to 60 ° with respect to the ipsilateral main hole slot (4).
5. A method of rock-soil controlled blasting in old industrial plants according to claim 1, wherein in step S4, the explosive filling hole (5) is required to be waterproofed before the explosive filling hole (5) is filled with the explosive.
6. A method of rock-soil controlled blasting of old industrial plants according to claim 1, characterized in that the depth of each of said explosive filling holes (5) is set to be not more than 1.5 m, and the pore diameter of each of said explosive filling holes (5) is set in the range of 50mm-75 mm.
7. The method for rock-soil control blasting of old industrial factories according to claim 1, wherein the main hole groove (4) is arranged in a strip shape, the hole walls on the front side and the rear side of the main hole groove (4) are arranged beyond the front hole wall and the rear hole wall of the two explosive filling holes (5) on the same side, and the groove depth of the main hole groove (4) is larger than the vertical depth of the two explosive filling holes (5) on the same side.
8. The rock-soil control blasting method of the old industrial factory according to claim 1, wherein the cross sections of the two separation grooves (6) are arranged in a V shape, and the groove depths of the two separation grooves (6) are larger than the vertical depth of the explosive filling holes (5).
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| CN202211495143.5A CN115854803B (en) | 2022-11-26 | 2022-11-26 | Rock-soil control blasting method for old industrial factory |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211084972U (en) * | 2019-06-13 | 2020-07-24 | 马文有 | Rubber pad net-shaped gun and quilt demolition blasting protection device |
| KR102176665B1 (en) * | 2020-03-20 | 2020-11-09 | 주식회사 제가이앤씨 | Blasting excavation method for downtown area |
| CN113390309A (en) * | 2021-05-19 | 2021-09-14 | 新疆工程学院 | Complex rock blasting method for open pit coal mine in arid region |
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| CN115854804A (en) * | 2022-12-27 | 2023-03-28 | 河北省矾山磷矿有限公司 | Quasi-smooth blasting method for tunneling engineering |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211084972U (en) * | 2019-06-13 | 2020-07-24 | 马文有 | Rubber pad net-shaped gun and quilt demolition blasting protection device |
| KR102176665B1 (en) * | 2020-03-20 | 2020-11-09 | 주식회사 제가이앤씨 | Blasting excavation method for downtown area |
| CN113390309A (en) * | 2021-05-19 | 2021-09-14 | 新疆工程学院 | Complex rock blasting method for open pit coal mine in arid region |
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