CN101936689B - Vibration isolation loading embrasure and loading method - Google Patents
Vibration isolation loading embrasure and loading method Download PDFInfo
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- CN101936689B CN101936689B CN 201010266252 CN201010266252A CN101936689B CN 101936689 B CN101936689 B CN 101936689B CN 201010266252 CN201010266252 CN 201010266252 CN 201010266252 A CN201010266252 A CN 201010266252A CN 101936689 B CN101936689 B CN 101936689B
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Abstract
The invention discloses an isolated loading embrasure and a loading method, solving the problem that the impact action of blasting at a loading embrasure on wall rock can be strengthened along the axial direction of the embrasure. The vibration isolation loading embrasure comprises a tunnel face (1), a peripheral embrasure (2), a buffer device (3), small cartridges (4), air gaps (6), a bamboo chip (5), a primacord (7) and a tamping plug (8) for plugging the embrasure, wherein the peripheral embrasure (2) is arranged on the tunnel face (1), the buffer device (3) is arranged at the bottom of the peripheral embrasure (2), each air gap (6) is arranged between the adjacent small cartridges (4), the plurality of small cartridges (4) are clamped and connected in series by the bamboo chip (5) and arranged in the peripheral embrasure (2), the primacord (7) is connected with each small cartridge (4) and led out of the peripheral embrasure (2), and the tamping plug (8) for plugging the embrasure is arranged at an outlet of the peripheral embrasure (2). The invention also discloses the concrete method for loading explosive in the vibration isolation loading embrasure. The invention effectively lessens the impact action of the blasting on the wall rock, particularly and effectively lessens the vibration of the blasting on ground buildings right ahead the axial direction of the embrasure and takes the favorable vibration isolation effect.
Description
Technical field
The present invention relates to charging blast-hole on the face and charge process in the civil engineering of a kind of tunnel, charging blast-hole and charge process on particularly a kind of face with vibration isolation effect.
Background technology
At present, the charging means that in the tunnel civil engineering, helps vibration isolation, vibration damping mainly contains the spaced loading of borehole axial air, stemming spaced loading and decoupling charge.These charging means all ignored prolong cartridge bag along the big gun hole axially to the percussion of country rock, and the problem that can strengthen of the vibration of the quick-fried district the place ahead building that causes thus.In fact, the stress wave that on the cartridge bag centerline direction, produces is than much bigger with the stress wave of cartridge bag center line vertical direction generation.In the building of city underground, City Building, structures are more, and population is lived close gathering, because the not scientific and reasonable caused vibration meeting of the vibration isolation of constructing metro tunnel explosion and vibration reducing measure is to peripheral facilities and the very big threat of above-ground structures formation.
Summary of the invention
The invention provides a kind of vibration isolation charging blast-hole and loading method, thus exist when having solved in city underground constructing tunnel charging blast-hole explosion axially can strengthen having constituted the technical problem that peripheral facilities and above-ground structures are threatened along borehole to the vibration of the caused quick-fried district of the percussion of country rock dead ahead building.
The present invention overcomes the above problems through following scheme:
A kind of vibration isolation charging blast-hole; Comprise face, the periphery hole big gun hole that on face, is provided with is provided with buffer unit in the bottom in periphery hole big gun hole; Be provided with the airspace between the small medicine coil that faces mutually; Bamboo chip is arranged in the periphery hole big gun hole after with a plurality of small medicine coil clampings series connection, primacord be drawn out to outside the periphery hole big gun hole after each small medicine coil is connected, be provided with the stemming that seals the big gun hole in the exit in periphery hole big gun hole.
Described buffer unit is that length is ring or waddy or the water stemming material of 5-10 cm diameter less than the diameter in periphery hole big gun hole, and described small medicine coil is that diameter is 22 millimeters a powder stick.
A kind of vibration isolation charging blast-hole; Comprise face; Snubber big gun hole that on face, is provided with or driving eye big gun hole; Bottom in snubber or driving eye big gun hole is provided with buffer unit, in snubber or driving eye big gun hole, is provided with the big powder stick of packing into continuously, and millisecond delay cap is arranged in the big powder stick at the bottom of the hole of inserting snubber big gun hole or driving eye big gun hole; The lead-in wire of millisecond delay cap is drawn out to outside snubber big gun hole or the driving eye big gun hole, in snubber big gun hole or the exit in driving eye big gun hole be provided with the stemming in sealing big gun hole.
Described buffer unit is that length is ring or waddy or the water stemming material of 5-10 cm diameter less than the diameter in periphery hole big gun hole, and described big powder stick is that diameter is 32 millimeters a powder stick.
A kind of loading method of vibration isolation charging blast-hole may further comprise the steps:
The first step, periphery hole big gun hole, snubber big gun hole or a driving eye big gun hole are set on face according to blasting Design;
Second step, diameter is processed into the hole in the periphery hole big gun hole of packing into after the 5-10 centimeter length less than the ring of the diameter in periphery hole big gun hole or wooden stick or bubble mud at the bottom of;
The 3rd the step, small medicine coil is become the cartridge bag string with bamboo chip according to airspace strapping colligation; One end of primacord is inserted in the small medicine coil of this cartridge bag string head; Again the cartridge bag string is inserted in the periphery hole big gun hole, and the other end of primacord is drawn out to outside the periphery hole big gun hole;
The 4th goes on foot, with stemming the outlet in periphery hole big gun hole is sealed;
The 5th step, diameter is processed into the bottom, snubber big gun hole of packing into after the 5-10 centimeter length less than the ring of snubber diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, snubber big gun hole; Then with the continuous load mode big powder stick of in snubber big gun hole, packing into, at last with the outlet sealing of stemming with snubber big gun hole;
The 6th step, diameter is processed into the bottom, driving eye big gun hole of packing into after the 5-10 centimeter length less than the ring of driving eye blasthole diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, driving eye big gun hole; Then with the continuous load mode big powder stick of in driving eye big gun hole, packing into, the outlet that will tunnel eye big gun hole with stemming is at last sealed.
The present invention has reduced the percussion of explosion to country rock effectively, has particularly reduced the vibration of explosion to the above ground structure that is positioned at the axial dead ahead of borehole effectively, has played good vibration isolating effect.
Description of drawings:
Fig. 1 is the structural representation in periphery hole big gun of the present invention hole 2
Fig. 2 is the structural representation in snubber big gun hole of the present invention or driving eye big gun hole 9
Specific embodiment:
A kind of vibration isolation charging blast-hole; Comprise face 1, the periphery hole big gun hole 2 that on face 1, is provided with is provided with buffer unit 3 in the bottom in periphery hole big gun hole 2; Be provided with airspace 6 between the small medicine coil 4 that faces mutually; Bamboo chip 5 is arranged in the periphery hole big gun hole 2 after with a plurality of small medicine coil 4 clampings series connection, primacord 7 be drawn out to outside the periphery hole big gun hole 2 after each small medicine coil 4 is connected, be provided with the stemming 8 that seals the big gun hole in the exit in periphery hole big gun hole 2.
Described buffer unit 3 is that length is ring or waddy or the water stemming material of 5-10 cm diameter less than the diameter in periphery hole big gun hole 2, and described small medicine coil 4 is that diameter is 22 millimeters a powder stick.
A kind of vibration isolation charging blast-hole; Comprise face 1; Snubber big gun hole that on face 1, is provided with or driving eye big gun hole 9; Bottom in snubber or driving eye big gun hole 9 is provided with buffer unit 3, in snubber or driving eye big gun hole 9, is provided with the big powder stick 10 of packing into continuously, and millisecond delay cap 11 is arranged in the big powder stick 10 at the bottom of the hole of inserting snubber big gun hole or driving eye big gun hole 9; The lead-in wire of millisecond delay cap 11 is drawn out to outside snubber big gun hole or the driving eye big gun hole 9, in snubber big gun hole or the exit in driving eye big gun hole 9 be provided with the stemming 8 in sealing big gun hole.
Described buffer unit 3 is that length is ring or waddy or the water stemming material of 5-10 cm diameter less than the diameter in periphery hole big gun hole 2, and described big powder stick is that diameter is 32 millimeters a powder stick.
A kind of loading method of vibration isolation charging blast-hole may further comprise the steps:
The first step, periphery hole big gun hole 2, snubber big gun hole or a driving eye big gun hole 9 are set on face according to blasting Design;
Second step, diameter is processed into the hole in the periphery hole big gun hole 2 of packing into after the 5-10 centimeter length less than the ring of the diameter in periphery hole big gun hole 2 or wooden stick or bubble mud at the bottom of;
The 3rd the step, small medicine coil 4 usefulness bamboo chips 5 are become the cartridge bag string according to airspace strapping colligation; One end of primacord 7 is inserted in the small medicine coil 4 of this cartridge bag string head; Again the cartridge bag string is inserted in the periphery hole big gun hole 2, and the other end of primacord 7 is drawn out to outside the periphery hole big gun hole 2;
The 4th goes on foot, with stemming 8 outlet in periphery hole big gun hole 2 is sealed;
The 5th step, diameter is processed into the bottom, snubber big gun hole of packing into after the 5-10 centimeter length less than the ring of snubber diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, snubber big gun hole; Then with the continuous load mode big powder stick 10 of in snubber big gun hole, packing into, at last with the outlet sealing of stemming 8 with snubber big gun hole;
The 6th step, diameter is processed into the bottom, driving eye big gun hole of packing into after the 5-10 centimeter length less than the ring of driving eye blasthole diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, driving eye big gun hole; With the continuous load mode big powder stick 10 of in driving eye big gun hole, packing into, will tunnel an outlet in big gun hole with stemming 8 at last and seal then.
The selection of explosive: it is No. 2 rock emulsion explosives of QD type of φ 32 that Blasting Excavation adopts diameter, and its length is 270mm, and density is 0.95-0.130g/cm
3, explosion velocity is 3200m/s, brisance>=12mm, acting ability>=260ml, gap distance>=3cm.No. 2 rock emulsion explosives of QD type are the anti-water and wastewater industry explosives of a kind of New Rock, do not contain any monomer high explosive, and sensitiveness is good, and the acting ability is big, and water-resistance is strong, safety non-toxic, the construction requirement in suitable tunnel.
The emulsion performance indications
The selection of detonator: adopt second series half second delay Nonel detonator.The extension 50ms of the other Nonel detonator of each section.Detonate and select for use common instant electric detonator or detonator to excite pin to detonate, exploder is selected the mining exploder of MFB-100 type for use.Its performance is seen " MFB-100 type capacitor blasting machine performance indications table ".
MFB-100 type capacitor blasting machine performance indications table
Periphery hole adopts primacord, and primacord adopts the general industry primacord.The performance indications of primacord are seen " seeing cotton thread primacord performance indications table ".
Cotton thread primacord performance indications table
Claims (1)
1. the loading method of a vibration isolation charging blast-hole may further comprise the steps:
The first step, periphery hole big gun hole (2), snubber big gun hole or a driving eye big gun hole (9) are set on face according to blasting Design;
Second step, diameter is processed into the hole in the periphery hole big gun hole (2) of packing into after the 5-10 centimeter length less than the ring of the diameter in periphery hole big gun hole (2) or wooden stick or bubble mud at the bottom of;
The 3rd the step, small medicine coil (4) is become the cartridge bag string with bamboo chip (5) according to airspace strapping colligation; One end of primacord (7) is inserted in the small medicine coil (4) of this cartridge bag string head; Again the cartridge bag string is inserted in the periphery hole big gun hole (2), and the other end of primacord (7) is drawn out to outside the periphery hole big gun hole (2);
The 4th goes on foot, with stemming (8) outlet in periphery hole big gun hole (2) is sealed;
The 5th step, diameter is processed into the bottom, snubber big gun hole of packing into after the 5-10 centimeter length less than the ring of snubber diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, snubber big gun hole; With the continuous load mode big powder stick (10) of in snubber big gun hole, packing into, use the outlet sealing of stemming (8) at last then with snubber big gun hole;
The 6th step, diameter is processed into the bottom, driving eye big gun hole of packing into after the 5-10 centimeter length less than the ring of driving eye blasthole diameter or wooden stick or bubble mud; Again the millimeter delay detonator is inserted into bottom, driving eye big gun hole; With the continuous load mode big powder stick (10) of in driving eye big gun hole, packing into, an outlet of using stemming (8) will tunnel eye big gun hole is at last sealed then.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010266252 CN101936689B (en) | 2010-08-30 | 2010-08-30 | Vibration isolation loading embrasure and loading method |
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| CN 201010266252 CN101936689B (en) | 2010-08-30 | 2010-08-30 | Vibration isolation loading embrasure and loading method |
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| CN101936689A CN101936689A (en) | 2011-01-05 |
| CN101936689B true CN101936689B (en) | 2012-12-12 |
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| CN103267455B (en) * | 2013-05-10 | 2015-04-01 | 武汉大学 | Dam foundation one-step forming drilling blasting method by combining energy dissipation and energy collection of blast hole bottom |
| CN103335568A (en) * | 2013-07-01 | 2013-10-02 | 中国矿业大学 | Method for improving light exposure quality effect of coal mine tunnel periphery hole |
| CN109373193B (en) * | 2018-11-22 | 2020-08-14 | 杭州江润科技有限公司 | Tunnel blasting excavation system and construction method |
| CN109708547A (en) * | 2019-01-18 | 2019-05-03 | 中国矿业大学(北京) | A kind of surface mine presplit blasting means for loading |
| CN113309528B (en) * | 2021-07-30 | 2021-10-01 | 中铁九局集团第七工程有限公司 | Method for excavating horizontal joint argillaceous shale water-rich tunnel by drilling and blasting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2514305Y (en) * | 2001-11-26 | 2002-10-02 | 崔彪 | Rock blasting splitting pipe |
| CN100390495C (en) * | 2004-03-10 | 2008-05-28 | 马芹永 | Technology method of artificial frozen soil control blasting by deep surface forzen method |
| CN101349533B (en) * | 2008-08-05 | 2011-07-27 | 山东科技大学科技产业总公司 | Dip laneway digging hole layout mode |
| CN101441055A (en) * | 2008-12-31 | 2009-05-27 | 中煤平朔煤业有限责任公司 | Presplit blasting method |
| CN201764912U (en) * | 2010-08-30 | 2011-03-16 | 中铁十九局集团第五工程有限公司 | Vibration-isolating charging blasthole |
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