CN101545746A - Method for smooth blasting construction with pre-eccentric uncoupling charging - Google Patents
Method for smooth blasting construction with pre-eccentric uncoupling charging Download PDFInfo
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- CN101545746A CN101545746A CN200910059196A CN200910059196A CN101545746A CN 101545746 A CN101545746 A CN 101545746A CN 200910059196 A CN200910059196 A CN 200910059196A CN 200910059196 A CN200910059196 A CN 200910059196A CN 101545746 A CN101545746 A CN 101545746A
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Abstract
The invention discloses a method for smooth blasting construction, and in particular relates to a method for smooth blasting construction with pre-eccentric uncoupling charging. The invention aims to provide the method for the smooth blasting construction with pre-eccentric uncoupling charging, which can improve the side slope smooth blasting effect. The technical proposal comprises that the method for the smooth blasting construction with pre-eccentric uncoupling charging comprises the following steps: (1) drilling a hole according to design requirement, cleaning up sundries in the hole and beside the hole after drilling the hole to prevent the blasting hole from being blocked by the sundries; (2) processing an ammunition string: processing the ammunition string outside the hole according to the design, wherein the size ratio of the diameter of the charging hole to the diameter of the ammunition string or the uncoupling coefficient is between 3.0 and 4.0; (3) mounting well-processed brackets on the ammunition string at intervals according to construction requirements; (4) putting the ammunition string into the blasting hole slowly by pressing close to the upper hole wall, namely one side of a light blasting body and blocking the blasting hole; and (5) initiating the blasting. The method is mainly applicable for engineering blasting.
Description
Technical field
The present invention relates to a kind of photoface exploision construction method, particularly relate to the not photoface exploision construction method of coupling charging of a kind of pre-eccentric.
Background technology
Traditional photoface exploision generally all is to adopt spaced loading, and with bamboo chip colligation medicine string at interval, there is inhomogeneities in this charge structure powder charge, causes in the hole local failure serious.On the other hand, according to wave theory, stress wave is in communication process, because the continuous expansion of geometric volume, stress pulse is exponential damping, the stress wave intensity maximum of tangent place of cartridge bag and hole wall and both sides thereof, the rock failure mechanism of rock degree maximum that shows the cartridge bag near zone, along with the increase of cartridge bag apart from the hole wall distance, the stress wave surge pressure in the country rock also reduces thereupon, this is to go up the eccentric not principal character of coupling charging mode stress field, the destructiveness of country rock also because of peak pressure reduce reduce.In photoface exploision, should avoid cartridge bag and side slope tangent as far as possible, and in photoface exploision, should avoid cartridge bag and side slope tangent as far as possible, and traditional not coupling charging mode to be cartridge bag cut on the broken face or be placed in the middle of the hole, be unfavorable for that high-quality side slope forms.
Summary of the invention
The purpose of this invention is to provide the not photoface exploision construction method of coupling charging of a kind of pre-eccentric that can improve side slope photoface exploision effect.
The objective of the invention is to realize by following technical proposal: pre-eccentric is the photoface exploision construction method of coupling charging not, may further comprise the steps:
(1), according to designing requirement boring, and after boring, in the cleaning eye and the foreign material on the limit, hole, prevent that foreign material from stopping up blast hole.In time clear up the floating quarrel in aperture behind the pore-forming, clear hole can directly adopt sebific duct to blow in the hole, after blowing off, with the aperture jam-pack, prevents that foreign material from stopping up the big gun hole with woven bag.
(2), processing medicine string: the medicine string is processed the big or small ratio of the diameter in the powder charge hole of boring and the diameter of medicine string or be called not that the coefficient of coup is 3.0---4.0 by design outside the hole;
(3), the support that the processes spacing by construction requirement is installed on the medicine string, every powder stick is connected with primacord to be bundled on the bamboo chip, and bamboo chip should have certain rigidity, avoids distortion, every cushion block of 1.5m colligation, supports the medicine string and presses close to go up hole wall and place.
(4), the medicine string press close to go up hole wall just a side of the quick-fried body of light slowly put into wherein and stop up blast hole, tamper can adopt clay and fine sand to mix and stir, its granularity is not more than 30mm, water content 15%～20% (generally tightly can make it moulding to hold, do not scatter after loosing one's grip, and the mark that do not get wet on hand is as the criterion).Should promptly stop up after powder stick is laid, can adopt and at first fill in spitball or plastic foam, stop up segment length with control, the mode that compresses tamping with wooden tamper layering is stopped up then, and every layer to be advisable about 10cm, should note protecting primacord in the obstruction.
(5), detonate.For guaranteeing to detonate simultaneously, fuse arming test experiment initiation is generally all used in photoface exploision, adopts the segmentation multiple process.The last time-delay of light blast hole 110～150ms detonates.
Under the fractured rock condition, finish bore operation smoothly and be suitable difficulty, often have bit freezing in boring procedure, a hole phenomenon of collapsing, also have the hole wall stone sometimes behind the pore-forming and collapse and stop up big gun hole, particularly inclined hole, this phenomenon is more serious.In described step (1), take the hole with plastic clay for protecting wall technology, adhere to one deck plastic clay at the hole wall periphery, can stablize stone loosening on the hole wall, solve bit freezing, the hole problem of collapsing, guaranteed that hole wall is smooth, convenient powder charge.
Traditional photoface exploision generally all is to adopt spaced loading, and with bamboo chip colligation medicine string at interval, there is inhomogeneities in this charge structure powder charge, causes in the hole local failure serious.Adopt the small diameter medicine roll continuous charging, medicine string good uniformity.Therefore in described step (2), what the explosive in the medicine string adopted is the mode of continuous charging.
The coefficient of coup is not the ratio of blasthole diameter and powder stick diameter, test shows, when the coefficient of coup not greater than 1 the time, the ripple of bombarding of cartridge bag explosion time slows down the shock effect of hole wall, maximum stress sharply descends on the hole wall, and photoface exploision is exactly to control and bombard the percussion of ripple to hole wall by means of increasing not the coefficient of coup.Under the same or analogous situation of other condition, adopt not coupling charging, can control initial detonation pressure and the impulsive force that acts on the medium, it is compared with full hole charge constitution, can make vibration velocity reduce about 40%～60%, and the light blast hole adopt coupling charging not also help to form the stress stack in rock, stress is concentrated and the stretching crack, pulverizes and be difficult for producing, rock beyond making around the hole wall is easy to tension and destroys, and helps quick-fried formation of light.Therefore in described step (2), the coefficient of coup does not adopt 3.6.
Theoretical research and practice show: the wave impedance of explosive is during more near the wave impedance of blasting medium, and its oscillation intensity is big more.The wave impedance of explosive is during greater than the wave impedance of medium, and oscillation intensity enlarges markedly, otherwise, significantly reduce.Therefore, select for use low-density, low explosive can obtain significant shock dropping effect.Adopt low explosive in the light blast hole under the fractured rock condition, under same charging condition, quick-fried of light is smooth smooth, and half porosity obviously improves, and hole wall is complete, and crackle is few, and blasting quality obviously improves.Therefore in described step (2), adopting medicine string density is 0.95～1.30g/cm
3, explosion velocity is No. 2 rock emulsion explosives of 3200～3500m/s.
From method feature of the present invention as can be seen, the invention has the advantages that: to tradition not the coupling charging structure improve, make high slope photoface exploision effect be improved significantly, reduced cause because of demolition effect is not good outstanding, the accident potential of float stone landing, improved half porosity, improved domatic flatness, reached and rationally utilized explosive energy, purpose in quick-fried outer the guarantor, improved demolition effect greatly, because the change of charging means not only makes the crushing effect of the quick-fried layer of light improve, and the more important thing is the integrated degree that has improved side slope, especially under complex geological condition, improved the permanent security and stability of side slope greatly.
The specific embodiment
The present invention is described further below by embodiment:
Preferred embodiment
Pre-eccentric is the photoface exploision construction method of coupling charging not, it is characterized in that may further comprise the steps:
(1), according to designing requirement boring, and after boring, in the cleaning eye and the foreign material on the limit, hole, prevent that foreign material from stopping up blast hole;
(2), processing medicine string: the medicine string is processed the big or small ratio of the diameter in the powder charge hole of boring and the diameter of medicine string or be called not that the coefficient of coup is 3.0---4.0 by design outside the hole;
(3), the support that the processes spacing by construction requirement is installed on the medicine string;
(4), the medicine string press close to go up hole wall just a side of the quick-fried body of light slowly put into wherein and stop up blast hole;
(5), detonate.
In the described step (1), also include after boring, take the hole with plastic clay for protecting wall technology, adhere to the plastic clay that one deck is used for stablizing stone loosening on the hole wall at the hole wall periphery.
In the described step (2), what the explosive in the medicine string adopted is the mode of continuous charging.
In the described step (2), the coefficient of coup is not 3.6.
In the described step (2), adopting medicine string density is 0.95～1.30g/cm
3, explosion velocity is No. 2 rock emulsion explosives of 3200～3500m/s.
Claims (5)
1, the pre-eccentric photoface exploision construction method of coupling charging not is characterized in that may further comprise the steps:
(1), according to designing requirement boring, and after boring, in the cleaning eye and the foreign material on the limit, hole, prevent that foreign material from stopping up blast hole;
(2), processing medicine string: the medicine string is processed the big or small ratio of the diameter in the powder charge hole of boring and the diameter of medicine string or be called not that the coefficient of coup is 3.0---4.0 by design outside the hole;
(3), the support that the processes spacing by construction requirement is installed on the medicine string;
(4), the medicine string press close to go up hole wall just a side of the quick-fried body of light slowly put into wherein and stop up blast hole;
(5), detonate.
2, the pre-eccentric according to claim 1 photoface exploision construction method of coupling charging not, it is characterized in that in described step (1), also include after boring, take the hole with plastic clay for protecting wall technology, adhere to the plastic clay that one deck is used for stablizing stone loosening on the hole wall at the hole wall periphery.
3, the pre-eccentric according to claim 1 and 2 photoface exploision construction method of coupling charging not is characterized in that in described step (2), and what the explosive in the medicine string adopted is the mode of continuous charging.
4, the pre-eccentric according to claim 1 photoface exploision construction method of coupling charging not is characterized in that in described step (2), the coefficient of coup is not 3.6.
5, the pre-eccentric according to claim 1 photoface exploision construction method of coupling charging not is characterized in that in described step (2), and adopting medicine string density is 0.95～1.30g/cm
3, explosion velocity is No. 2 rock emulsion explosives of 3200～3500m/s.
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| CN2009100591960A CN101545746B (en) | 2009-05-06 | 2009-05-06 | Method for smooth blasting construction with pre-eccentric uncoupling charging |
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| CN2009100591960A CN101545746B (en) | 2009-05-06 | 2009-05-06 | Method for smooth blasting construction with pre-eccentric uncoupling charging |
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| CN101545746B CN101545746B (en) | 2012-04-25 |
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| CN107014263A (en) * | 2017-04-18 | 2017-08-04 | 中国矿业大学(北京) | The eccentric powder charge joint-cutting pipe and roadway construction method constructed applied to tunnelling |
| CN107490327A (en) * | 2017-09-27 | 2017-12-19 | 贵州安凯达实业股份有限公司 | A kind of powder charge construction method for the domatic explosion of massif |
| CN107542471A (en) * | 2017-09-27 | 2018-01-05 | 贵州安凯达实业股份有限公司 | A kind of smooth blasting method for constructing tunnel |
| CN107702603A (en) * | 2017-09-27 | 2018-02-16 | 贵州安凯达实业股份有限公司 | A kind of powder charge construction method for photoface exploision |
| CN107762514A (en) * | 2017-10-23 | 2018-03-06 | 洛阳坤宇矿业有限公司 | A kind of method of the pre-powder charge in weak ore body |
| CN109764782A (en) * | 2019-03-14 | 2019-05-17 | 中交隧道工程局有限公司 | A kind of fine blasting technique of smooth surface based on pre-powder charge |
| CN112943326A (en) * | 2021-03-16 | 2021-06-11 | 太原理工大学 | Automatic anchor drill device |
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| CN101029559B (en) * | 2007-04-13 | 2010-05-19 | 中国京冶工程技术有限公司 | Long-spiral replaceable and extruded borehole construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285732B (en) * | 2016-08-30 | 2019-01-04 | 中国水利水电第十四工程局有限公司 | A kind of big duck eye diameter perforation excavation construction method of underground chamber |
| CN106285732A (en) * | 2016-08-30 | 2017-01-04 | 中国水利水电第十四工程局有限公司 | The through excavation construction method in a kind of underground chamber big duck eye footpath |
| CN107014263A (en) * | 2017-04-18 | 2017-08-04 | 中国矿业大学(北京) | The eccentric powder charge joint-cutting pipe and roadway construction method constructed applied to tunnelling |
| CN107014263B (en) * | 2017-04-18 | 2019-02-19 | 中国矿业大学(北京) | Eccentric powder charge joint-cutting pipe and roadway construction method applied to tunnelling construction |
| CN107542471A (en) * | 2017-09-27 | 2018-01-05 | 贵州安凯达实业股份有限公司 | A kind of smooth blasting method for constructing tunnel |
| CN107702603A (en) * | 2017-09-27 | 2018-02-16 | 贵州安凯达实业股份有限公司 | A kind of powder charge construction method for photoface exploision |
| CN107490327A (en) * | 2017-09-27 | 2017-12-19 | 贵州安凯达实业股份有限公司 | A kind of powder charge construction method for the domatic explosion of massif |
| CN107490327B (en) * | 2017-09-27 | 2019-11-08 | 贵州安凯达实业股份有限公司 | A kind of powder charge construction method for massif slope surface explosion |
| CN107762514A (en) * | 2017-10-23 | 2018-03-06 | 洛阳坤宇矿业有限公司 | A kind of method of the pre-powder charge in weak ore body |
| CN109764782A (en) * | 2019-03-14 | 2019-05-17 | 中交隧道工程局有限公司 | A kind of fine blasting technique of smooth surface based on pre-powder charge |
| CN109764782B (en) * | 2019-03-14 | 2021-03-02 | 中交隧道工程局有限公司 | Smooth surface fine blasting method based on pre-charging |
| CN112943326A (en) * | 2021-03-16 | 2021-06-11 | 太原理工大学 | Automatic anchor drill device |
| CN112943326B (en) * | 2021-03-16 | 2022-11-25 | 太原理工大学 | Automatic anchor drill device |
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| CN101545746B (en) | 2012-04-25 |
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Effective date of registration: 20160105 Address after: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 16 Patentee after: CHINA RAILWAY NO.2 BUREAU ENGINEERING Co.,Ltd. Address before: 610041 high building, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 6 Patentee before: CHINA RAILWAY ERJU Co.,Ltd. Patentee before: CHINA RAILWAY ERJU THIRD ENGINEERING Co.,Ltd. |
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Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee after: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee before: CHINA RAILWAY NO.2 BUREAU ENGINEERING Co.,Ltd. |
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Effective date of registration: 20181212 Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee after: CHINA RAILWAY ERJU THIRD ENGINEERING Co.,Ltd. Patentee after: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Patentee before: CHINA RAILWAY NO.2 ENGINEERING GROUP Co.,Ltd. |