CN209263807U - Micro-vibration rock and soil blasting structure - Google Patents
Micro-vibration rock and soil blasting structure Download PDFInfo
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- CN209263807U CN209263807U CN201822052382.9U CN201822052382U CN209263807U CN 209263807 U CN209263807 U CN 209263807U CN 201822052382 U CN201822052382 U CN 201822052382U CN 209263807 U CN209263807 U CN 209263807U
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Abstract
The utility model discloses a kind of micro-vibration rock and soil blasting structures, including partition wall, side slope pre split hole, partition wall hole and main blast hole and stemming, powder stick has been spaced apart between side slope pre split hole bottom hole and stemming, interior primacord is connected between powder stick, gap is provided with air column between powder stick, and there are air column I for main blast hole bottom hole, and explosive layer is filled between the air column I and stemming, it has been spaced apart explosive layer I between partition wall hole bottom hole and stemming, has been arranged between the explosive layer I and bankets filled with void；The utility model uses presplit blasting by side slope hole, main blast hole uses standing, partition wall uses heavy blasting explosion by massif side, weak standing is used close to free face side, effective control is obtained to the brittle and breakable slope excavating such as IV grade of soft rock and V level heavily fortified point stone, excavation face is smooth, meets design requirement, in addition setting partition wall self-protection, avoids slungshot and damages surrounding building and traffic safety.
Description
Technical field
The utility model belongs to the technical field of the specific application of blasting technique, is specifically related to a kind of for surrounding enviroment
It is quick-fried to be related to closing on the controlling micro-vibration soil stone that the building, machinery, personnel safety of highway and hot work in progress are on the hazard for complexity
Broken structure.
Background technique
Newly-built Lanzhou to Urumchi the second double line (Xinjiang section) railway LXTJ7 bid section DK1751+571.5~DK1751+
654 sections of elevated formation level line left sides are close to 312 national highways, and the low, Zhongshan District positioned at the slope East -Tianshan Bo Geduoshannan, hypsography, topography is substantially
By north orientation south low-angle dip, earth's surface is low mountain, slow mound, vegetation agensis.Work point range, which belongs to, reaches the area Ban Chengfeng, is strong wind Yi Faqu,
Abrasive environment is M3, and earthquake motion peak acceleration 0.10g, soil maximum frozen depth is 144cm, no underground water, stratum charcoal
System tufaceous siltstone in system, exposure mountain low with earth's surface, slow mound；Grey black, taupe are partially maroon, aleuritic texture structure,
Irony, silicious gangue, middle thick to thick-layer columnar structure, rock matter is harder, and property is crisp, developmental joint fissure, relatively broken, weathered layer 3~5
Rice, severely-weathered to weak weathering；It is located on the right side of 312 national highways to quick-fried massif, blast area and 312 national highways are at a distance of about 30~40 meters, away from original
About 45 meters of height above average terrain, big mileage end is white poplar river bridge orchid platform, and small mileage end is also No. tetra- jackshaft Wu Tai of Tai Tage, is needed
About 9.8 ten thousand stere of the explosion cubic metre of earth and stone is wanted, to prevent the influence driven a vehicle to national highway and in the destruction of bridge construction platform, it is ensured that blast working
Safety, explosion use micro-vibration blasting technique.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of micro-vibration rock and soil blasting structure, the micro-vibration soil stone
Blasting arrangement arranges that side slope hole uses presplitting by the way that different explosives is arranged in side slope pre split hole, partition wall hole and main blast hole
Explosion, main blast hole use standing, and partition wall uses heavy blasting explosion by massif side, use weak pine close to free face side
Dynamic explosion, has obtained effective control, excavation face to the brittle and breakable slope excavating such as IV grade of soft rock and V level heavily fortified point stone
It is smooth, meet design requirement, in addition setting partition wall self-protection, avoids slungshot and damage surrounding building and traffic safety.
In order to achieve the above object, a kind of micro-vibration rock and soil blasting structure of the utility model, including partition wall, side slope pre split
Hole, partition wall hole and main blast hole are sealed with stemming at the side slope pre split hole, partition wall hole and main blast hole aperture, and the side slope is pre-
It has been spaced apart powder stick between ceasma bottom hole and stemming, interior primacord, gap between the powder stick are connected between the powder stick
Place is provided with air column, and there are air column I for the main blast hole bottom hole, and explosive layer, institute are filled between the air column I and stemming
It states and has been spaced apart explosive layer I between partition wall hole bottom hole and stemming, be arranged between the explosive layer I and banket filled with void.
Further, bamboo cane is connected between the powder stick, the powder stick is bound in bamboo cane by rope rolling.
It further, further include outer primacord, the outer primacord passes through stemming and is connected with interior detonator, the side slope pre split hole
Interior interior detonator is arranged in the powder stick nearest from stemming, and the explosive nearest from stemming is arranged in the interior detonator in the main blast hole
In layer, the interior detonator in the partition wall hole is arranged far from the explosive layer I of stemming.
Further, the pre- ceasma, partition wall hole and main blast hole hole depth are 500 ± 50cm, and aperture is 4.2cm, wherein
Presplitting hole number is set as 7-8, and partition wall hole number is set as 6-7, and main blast hole quantity is set as 20-30.
Further, 150 ± 10cm of the vertical slope surface thickness of the partition wall, drill backer side 50 ± 5cm of thickness, thick by free face
100 ± 10cm, wherein presplitting pitch of holes is set as 50 ± 5cm, and array pitch is set as 100cm；Partition wall hole uses component asymmetry cloth
Hole forms drilling, and partition wall pitch of holes is set as 70cm, and partition wall hole array pitch is set as 50 ± 5cm；Main blast hole is set as three rows, plum blossom
Shape arrangement, 120 ± 10cm of main blast hole spacing, main blast hole array pitch are set as 100 ± 10cm.
The utility model has the beneficial effects that:
1, the utility model micro-vibration rock and soil blasting structure in side slope pre split hole, partition wall hole and main blast hole by being arranged not
Same explosive arrangement, side slope hole use presplit blasting, and main blast hole uses standing, and partition wall is used by massif side reinforces pine
Dynamic explosion uses weak standing close to free face side, to the brittle and breakable side such as IV grade of soft rock and V level heavily fortified point stone
Slope excavates to have obtained effective control, and excavation face is smooth, meets design requirement, in addition setting partition wall self-protection, avoids winged
Stone damages surrounding building and traffic safety；
2, the utility model micro-vibration rock and soil blasting structure can effectively raise explosion effect, accelerate construct into
Degree, weakens slungshot impact force by setting partition wall certainly effectively, reduces safety prevention measure expense, while improving explosive utilization
Rate is increased economic efficiency；
3, the utility model micro-vibration rock and soil blasting structure can reduce the interference to road travel, alleviate to periphery
The bad burden of resident living, while accelerating construction speed, it is ensured that the construction period smoothly completes, while micro-vibration explosion skill
Art has greatly reduced dust when big gun, reduces environmental pollution.
Detailed description of the invention
Fig. 1 is blown-out shot position and the detonator layout drawing of the utility model micro-vibration rock and soil blasting structure；
Fig. 2 is the outer detonator line graph of sky of the utility model micro-vibration rock and soil blasting structure；
Appended drawing reference: the outer primacord of 1-；The hole 2- inner wall；3- powder stick；3aExplosive layer；3b- explosive layer I；Detonator in 4-；5-
Stemming；7- bamboo cane；8- tied rope；Primacord in 9-；10- void is banketed；11- excavation line；12- side slope pre split hole；The main blast hole of 13-；14-
Partition wall hole；15- partition wall；16- detonating capsule.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.
It is as shown in Figs. 1-2 the structural schematic diagram of the utility model micro-vibration rock and soil blasting structure, the utility model is a kind of
Micro-vibration rock and soil blasting structure, including partition wall 15, side slope pre split hole 12, partition wall hole 14 and main blast hole 13, the side slope pre split hole
12, it is sealed with stemming 5 at 13 aperture of partition wall hole 14 and main blast hole, is spaced between 12 bottom hole of side slope pre split hole and stemming 5
It is placed with powder stick 3, interior primacord 9 is connected between the powder stick 3, gap is provided with air column between the powder stick 3, described
There are air column I for main 13 bottom hole of blast hole, and explosive layer 3 is filled between the air column I and stemming 5a, 14 bottom hole of partition wall hole
Explosive layer I3b it has been spaced apart between stemming 5, setting bankets 10 filled with void between the explosive layer I3b.
The present embodiment in side slope pre split hole, partition wall hole and main blast hole by being arranged different explosive arrangements, side slope hole
Using presplit blasting, main blast hole uses standing, and partition wall uses heavy blasting explosion by massif side, close to free face side
Using weak standing, effective control has been obtained to the brittle and breakable slope excavating such as IV grade of soft rock and V level heavily fortified point stone
System, excavation face is smooth, meet design requirement, plus be arranged partition wall self-protection, avoid slungshot damage surrounding building and
Traffic safety.
Further, it is connected with bamboo cane 7 between the preferred powder stick 3, the powder stick 3 is bound by rope rolling 8 in bamboo cane 7
On, there are air between hole inner wall 2 and bamboo cane 7 and powder stick 3.
It further, further include outer primacord 1, the outer primacord 1 passes through stemming and is connected with interior detonator 4, and the side slope is pre-
Interior detonator 4 in ceasma 12 is arranged in the powder stick 3 nearest from stemming 5, and the interior detonator in the main blast hole is arranged from stemming
In nearest explosive layer, the interior detonator in the partition wall hole is arranged far from the explosive layer I of stemming.
Further, the preferred pre- ceasma, partition wall hole and main blast hole hole depth are 500 ± 50cm, aperture is 4.2cm,
Wherein presplitting hole number is set as 7-8, and partition wall hole number is set as 6-7, and main blast hole quantity is set as 20-30.
Further, the vertical slope surface thickness 150 ± 10 of the preferred partition wallcm, drill backer side 50 ± 5cm of thickness, by facing sky
Face 100 ± 10cm of thickness, wherein presplitting pitch of holes is set as 50 ± 5cm, and array pitch is set as 100cm；Partition wall hole is not right using component
Cloth hole is claimed to form drilling, partition wall pitch of holes is set as 70cm, and partition wall hole array pitch is set as 50 ± 5cm；Main blast hole is set as three rows,
Quincuncial arrangement, 120 ± 10cm of main blast hole spacing, main blast hole array pitch are set as 100 ± 10cm.
The present embodiment can take benching tunnelling method explosion, and 3 meters of step height or so, 5 meters of longitudinal length, with digging with protection；Side
Slope hole avoids photoface exploision slungshot from influencing transmission line safety using excavation line 11, presplit blasting is excavated；Partition wall is set on the left of route
15, partition wall 15 uses heavy blasting explosion by massif side, uses weak standing, and 15 bottom of partition wall close to free face side
It is higher by 50 centimetres of main blast hole；Main blast hole 13 uses standing, and leads quick-fried detonating capsule 16 and the control of interior detonator 4 with millisecond inside and outside hole
Make maximum explosive quantity.
Stability, blasting technique level, the Drilling ability and work of rock drill of the borehole depth according to side slope in the present embodiment
Phase arranges；According to site inspection and previous engineering experience, the vertical range on borehole eyeground to excavation face is 5m.
Pre- ceasma detonates prior to other blastholes in the present embodiment, the gap of a certain range perforation is formed after explosion, in rock mass
It is middle to form discontinuous structure plane of weakness, it can stop or make other shot hole blasting principal stress waves to be greatly attenuated, to reduce opposite side
The destruction on slope, rule of thumb, presplitting pitch of holes takes 50cm in this engineering.
The present embodiment interval porthole partition wall plays interim blocking effect, and partition wall hole forms drilling week using component asymmetry cloth hole
The principle for enclosing free face variation reaches side and loosens by force, the purpose of the weak loosening in side, and the vertical slope surface of this section of partition wall is 1.5 meters thick, bores
Hole backer side is 50 centimetres thick, 100 centimetres thick by free face.
The main main blast hole of blast hole sets three rows in the present embodiment, quincuncial arrangement, and 1.2 meters of blasthole spacing, 1 meter of blasthole array pitch,
In the basic parameter of pre- ceasma, pre- ceasma and main blast hole be as follows:
The purpose of perforation plugging is to guarantee that explosive sufficiently reacts in the present embodiment, is allowed to generate maximum heat, prevents explosive
Incomplete detonation；Prevent the detonation gas of high temperature and pressure from prematurely escaping from borehole or pilot tunnel, the energy for generating explosion is more
It mostly is converted into the mechanical work of fragmented rock body, improves the effective rate of utilization of explosive energy；Choke material uses stemming, and stemming is by sand
Son and clay mixed configuration form, weight ratio 3:1, along with 20% water.Filling should be carried out using layering tamping method, no
Must there are gap or interruption；Each borehole should clog the stemming of sufficient length, be control of flyrock, the length of all tampings of this section of explosion
Degree cannot be less than 140cm.
Explosive uses No. 2 rock dynamites in the present embodiment, and specification is Φ 32mm × 200mm, every volume 150g.
Detonator selects Millisecond Nonel Tube Detonator in the present embodiment；Detonation selects common instant electric detonator or detonator to excite needle
Detonation.
Using the series connection spaced loading of primacord beam, powder charge as far as possible should be segmented morely, make for side slope hole and partition wall hole in the present embodiment
Powder charge is uniform as far as possible in hole；Main blast hole uses continuous charging.
Finally, it is stated that preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The range of restriction.
Claims (5)
1. a kind of micro-vibration rock and soil blasting structure, including partition wall, side slope pre split hole, partition wall hole and main blast hole, the side slope pre split
Stemming is sealed at hole, partition wall hole and main blast hole aperture, it is characterised in that: between side slope pre split hole bottom hole and stemming
Every being placed with powder stick, interior primacord is connected between the powder stick, gap is provided with air column, the master between the powder stick
There are air column I for blast hole bottom hole, are filled with explosive layer between the air column I and stemming, partition wall hole bottom hole and stemming it
Between be spaced apart explosive layer I, be arranged between the explosive layer I and banket filled with void.
2. micro-vibration rock and soil blasting structure as described in claim 1, it is characterised in that: it is connected with bamboo cane between the powder stick,
The powder stick is bound in bamboo cane by rope rolling.
3. micro-vibration rock and soil blasting structure as described in claim 1, it is characterised in that: it further include outer primacord, it is described to lead outside
Quick-fried rope passes through stemming and is connected with interior detonator, and the interior detonator in the side slope pre split hole is arranged in the powder stick nearest from stemming, institute
It states the interior detonator in main blast hole to be arranged in the explosive layer nearest from stemming, the interior detonator in the partition wall hole is arranged far from big gun
In the explosive layer I of mud.
4. micro-vibration rock and soil blasting structure as described in claim 1, it is characterised in that: the pre- ceasma, partition wall hole and master are quick-fried
Hole hole depth is 500 ± 50cm, and aperture is 4.2cm, and wherein presplitting hole number is set as 7-8, and partition wall hole number is set as
6-7, main blast hole quantity is set as 20-30.
5. such as the described in any item micro-vibration rock and soil blasting structures of Claims 1 to 4, it is characterised in that: the vertical slope of the partition wall
Face 150 ± 10cm of thickness, drill backer side 50 ± 5cm of thickness, depends on 100 ± 10cm of free face thickness, wherein presplitting pitch of holes is set as
50 ± 5cm, array pitch are set as 100cm；Partition wall hole forms drilling using component asymmetry cloth hole, and partition wall pitch of holes is set as
70cm, partition wall hole array pitch are set as 50 ± 5cm；Main blast hole is set as three rows, quincuncial arrangement, 120 ± 10cm of main blast hole spacing,
Main blast hole array pitch is set as 100 ± 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822052382.9U CN209263807U (en) | 2018-12-07 | 2018-12-07 | Micro-vibration rock and soil blasting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822052382.9U CN209263807U (en) | 2018-12-07 | 2018-12-07 | Micro-vibration rock and soil blasting structure |
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| Publication Number | Publication Date |
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| CN209263807U true CN209263807U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822052382.9U Active CN209263807U (en) | 2018-12-07 | 2018-12-07 | Micro-vibration rock and soil blasting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059970A (en) * | 2019-12-13 | 2020-04-24 | 中铁十八局集团有限公司 | Multistage ultra-deep hole ballast-throwing vibration-control self-stabilizing blasting method for upper step of hard rock in tunnel |
| KR102350514B1 (en) * | 2021-01-18 | 2022-01-12 | 노정일 | Method for Blasting Rock Utilizing Air Deck and Decoupling |
-
2018
- 2018-12-07 CN CN201822052382.9U patent/CN209263807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059970A (en) * | 2019-12-13 | 2020-04-24 | 中铁十八局集团有限公司 | Multistage ultra-deep hole ballast-throwing vibration-control self-stabilizing blasting method for upper step of hard rock in tunnel |
| KR102350514B1 (en) * | 2021-01-18 | 2022-01-12 | 노정일 | Method for Blasting Rock Utilizing Air Deck and Decoupling |
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