CN103575172A - Novel roadway blasting construction method - Google Patents
Novel roadway blasting construction method Download PDFInfo
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- CN103575172A CN103575172A CN201310597738.6A CN201310597738A CN103575172A CN 103575172 A CN103575172 A CN 103575172A CN 201310597738 A CN201310597738 A CN 201310597738A CN 103575172 A CN103575172 A CN 103575172A
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Abstract
The invention discloses a novel roadway blasting construction method, belongs to the technical field of shaft building construction, and provides a novel cutting blasting shaft-forming construction method. Four kinds of blast holes are formed in a whole cross section of a roadway, wherein V-shaped ejection holes, cutting holes, auxiliary holes, interval cutting holes and peripheral holes are formed sequentially from inside to outside; and the cutting holes are formed on two sides of each auxiliary hole. Compared with other methods, free surfaces of the auxiliary holes is added, and the number of the free surfaces is increased from two to three; a blank hole is drilled at the interval of every two blast holes among the interval cutting holes and isn't filled with explosive; the oblique cutting angle of each ejection hole is 80-85 degrees, and a small amount of the explosive is filled in the ejection holes; and the reserved holes are taken as compensation space of the free surfaces and crushed rock mass during cutting hole blasting, and a throwing effect on rock mass after cutting hole blasting is realized. With the adoption of the novel interval cutting hole method, influences of blasting vibration on surrounding rock are reduced, the free surfaces are added, the cutting depth and the cutting size are increased, the blasting effect is improved, and the blasting efficiency is improved.
Description
Technical field
Brand-new roadway blasting construction method of the present invention belongs to shaft building technical field of construction.
Background technology
Sinking and drifting technique mainly contains two kinds, i.e. comprehensive mechanization construction method and roadway blasting procedure.Comprehensive mechanization construction method have safety, operation continuously, evenly, automaticity advantages of higher, but because machinery wieght is large, the cutlery life-span is short, the scope of application is little, high in cost of production restriction, seldom uses at present in China's rock tunnel and excavation.Therefore drilling and blasting method is the basic skills of sinking and drifting.As rock consolidating coefficient f>6, it is unique effective and economic method.
The cloth eye mode of drill eye blasting is all to adopt now: cloth eye is from inside to outside sequentially snubber, reliever, avalanche eye, periphery hole.Because the clamping action of rock, slotting effect is unsatisfactory, thereby has affected demolition effect and digging footage degree.According to existing blasting method, traditional Cut Blasting still can not be utilized the scope of freedom preferably, and the slotting frame of can not being dished out completely of the rock after explosion, sometimes there is " asphyxia by external pressure on the chest and abdomen " phenomenon, affect slotting effect, so the blast hole utilization factor of roadway explosion generally, in 85%, affects drivage efficiency.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the present invention aims to provide a kind of safe, reliable, effective excavation blasting method.
This method realizes by following technical scheme:
On the full section of roadway, once arrange from inside to outside splayed impelling hole, keyhole, via hole, interval keyhole, periphery hole.
Splayed impelling hole is generally arranged in centered by roadway section, and circle footpath is on the circumference of 0.2-0.3m left and right, and big gun hole and ground elevation are about 80 °-85 °.
Impelling hole is generally than other big gun hole depth 0.2-0.3m, the in-built a small amount of explosive in big gun hole, and do not clog.
Interval keyhole is arranged between via hole and periphery hole, wherein select several intervals not powder charge of keyhole (generally plaing a not powder charge of emptying aperture every two big gun holes), as the compensation space of the scope of freedom and broken body, adopt routine not coupling charging structure powder charge continuously.
Adopt ms postpone detonating technique, utilize detonator and detonator time delay to control.Keyhole and interval keyhole are first quick-fried, via hole just can form three scope of freedoms like this, than other method, have more a scope of freedom, and first quick-fried interval keyhole can play and hinder the shock wave in other big gun hole and stress wave to the propagation of periphery hole and country rock direction, make contoured surface moulding regular, adjoining rock stability.Impelling hole is quick-fried again after keyhole and interval keyhole are first quick-fried, plays the effect of strengthening throwing rock, and the broken body of first quick-fried keyhole is dished out, and forms the good scope of freedom, improves demolition effect.
Accompanying drawing explanation:
Fig. 1 is that schematic diagram is arranged in overall big gun of the present invention hole.
Fig. 2 is the longitudinal sectional view of Fig. 1.
Fig. 3 is via hole scope of freedom schematic diagram.
The specific embodiment:
With example, brand-new roadway blasting construction method of the present invention is described as follows by reference to the accompanying drawings:
Take circular shaft section as example:
Take wellbore centre as the center of circle, and cloth hole is from inside to outside sequentially impelling hole 1, keyhole 2, via hole 3, interval keyhole 4,5, periphery hole 6.
Take wellbore centre as the center of circle, on the circumference that is 0.2-0.3m in circle footpath, arrange splayed impelling hole 1, oblique cutting angle is 80 °-85 °, and this hole depth, than the about 0.2m of other big gun hole depth, packs 2 volume explosives 7 in its bottom, do not take any filling, after the keyhole 2 on side is first quick-fried, broken body has just in time served as the padding in impelling hole 1, detonates in impelling hole 1, just in time broken body is started, can form the better scope of freedom.
The circle footpath of keyhole 2 is compared with the large 1.4-1.6m in impelling hole, and keyhole 2 all adopts vertical perforating with via hole 3, adopts the powder charge of common continuous charging structure.
Periphery hole 6 adopts airspace charge constitution powder charge, finally detonates.
Utilize detonator and detonator delayed ignition, keyhole 2 and interval keyhole 4 first detonate simultaneously, and then detonate in impelling hole 1 again, and broken body is played to the effect of dishing out, and then via hole 3 detonates again, and last periphery hole 6 detonates, and total defer time is controlled in 135ms.
Claims (3)
1. on via hole both sides, arrange respectively keyhole and interval keyhole, keyhole and interval keyhole detonate simultaneously, and first quick-fried compared with via hole, via hole can have three scope of freedoms like this, increased the number on the scope of freedom, improved digging footage degree, and the interval keyhole first detonating can hinder shock wave and stress wave to the propagation of country rock.
2. in the keyhole of interval, every 2 big gun holes, play a not powder charge of emptying aperture, play the effect of facing the sky scope of freedom and broken body compensation space.
3. splayed impelling hole is generally arranged near the center of roadway section, take roadway section as the center of circle, on the circumference that circle footpath is 0.2-0.3m, other big gun hole depth of splayed impelling boring ratio 0.2-0.3m, oblique cutting angle is 80 °-85 °, bottom, big gun hole fills 2 volume explosives, do not clog, after keyhole is first quick-fried, keyhole broken body has around played wad act, the explosive in impelling hole has played throwing effect to broken body, forms the good scope of freedom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310597738.6A CN103575172A (en) | 2013-11-21 | 2013-11-21 | Novel roadway blasting construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310597738.6A CN103575172A (en) | 2013-11-21 | 2013-11-21 | Novel roadway blasting construction method |
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| CN103575172A true CN103575172A (en) | 2014-02-12 |
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| CN201310597738.6A Pending CN103575172A (en) | 2013-11-21 | 2013-11-21 | Novel roadway blasting construction method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868420A (en) * | 2014-03-31 | 2014-06-18 | 江西稀有金属钨业控股集团有限公司 | Mine gallery driving cut blasting method |
| CN104266557A (en) * | 2014-07-31 | 2015-01-07 | 山东华联矿业股份有限公司 | Precontrol roof sublevel ore breaking once shaft forming method |
| CN104406470A (en) * | 2014-10-20 | 2015-03-11 | 中国矿业大学(北京) | Deep-hole slotting blasting method for large-diameter freezing shaft in west cretaceous system soft rock area |
| CN104792236A (en) * | 2015-03-13 | 2015-07-22 | 深圳市万信达生态环境股份有限公司 | Method for blasting forming of V-shaped grooves of rock slope |
| CN105333779A (en) * | 2015-09-24 | 2016-02-17 | 安徽理工大学 | Different-level millisecond underholing blasting technology for hard rock tunnel |
| CN106089212A (en) * | 2016-07-19 | 2016-11-09 | 河北钢铁集团矿业有限公司 | Hard rock quickly digs courtyard blasting design method |
| CN110926284A (en) * | 2019-11-21 | 2020-03-27 | 抚顺罕王傲牛矿业股份有限公司 | Medium-length hole blasting one-time well completion method |
| CN111578798A (en) * | 2020-05-08 | 2020-08-25 | 安徽理工大学 | Undercutting blasting method based on energy-gathering pre-cutting and bottom strengthening throwing |
| CN111664763A (en) * | 2020-05-08 | 2020-09-15 | 安徽理工大学 | Slitting blasting method based on pre-cutting of cutting seams and bottom reinforced throwing |
| CN111895870A (en) * | 2020-07-26 | 2020-11-06 | 中国水利水电第七工程局有限公司 | Inclined shaft blasting particle size control method |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
| CN114264202A (en) * | 2021-08-16 | 2022-04-01 | 北方工业大学 | Rock roadway deep hole layered cut blasting method |
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| CN101419040A (en) * | 2008-11-19 | 2009-04-29 | 中煤第一建设公司第四十九工程处 | Deep hole blasting method in large aperture composite undermine |
| CN101738148A (en) * | 2009-12-21 | 2010-06-16 | 煤炭科学研究总院南京研究所 | Tunnel medium-length hole smooth blasting method |
| CN102401616A (en) * | 2011-10-11 | 2012-04-04 | 中国矿业大学(北京) | Blasting excavation method of vertical shaft |
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2013
- 2013-11-21 CN CN201310597738.6A patent/CN103575172A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101419040A (en) * | 2008-11-19 | 2009-04-29 | 中煤第一建设公司第四十九工程处 | Deep hole blasting method in large aperture composite undermine |
| CN101738148A (en) * | 2009-12-21 | 2010-06-16 | 煤炭科学研究总院南京研究所 | Tunnel medium-length hole smooth blasting method |
| CN102401616A (en) * | 2011-10-11 | 2012-04-04 | 中国矿业大学(北京) | Blasting excavation method of vertical shaft |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868420A (en) * | 2014-03-31 | 2014-06-18 | 江西稀有金属钨业控股集团有限公司 | Mine gallery driving cut blasting method |
| CN104266557A (en) * | 2014-07-31 | 2015-01-07 | 山东华联矿业股份有限公司 | Precontrol roof sublevel ore breaking once shaft forming method |
| CN104406470A (en) * | 2014-10-20 | 2015-03-11 | 中国矿业大学(北京) | Deep-hole slotting blasting method for large-diameter freezing shaft in west cretaceous system soft rock area |
| CN104406470B (en) * | 2014-10-20 | 2016-03-09 | 中国矿业大学(北京) | Western Cretaceous System Soft Rock Area major diameter freezing shaft deep hole Cut Blasting method |
| CN104792236A (en) * | 2015-03-13 | 2015-07-22 | 深圳市万信达生态环境股份有限公司 | Method for blasting forming of V-shaped grooves of rock slope |
| CN105333779A (en) * | 2015-09-24 | 2016-02-17 | 安徽理工大学 | Different-level millisecond underholing blasting technology for hard rock tunnel |
| CN106089212A (en) * | 2016-07-19 | 2016-11-09 | 河北钢铁集团矿业有限公司 | Hard rock quickly digs courtyard blasting design method |
| CN106089212B (en) * | 2016-07-19 | 2018-01-09 | 河北钢铁集团矿业有限公司 | Hard rock quickly digs courtyard blasting design method |
| CN110926284A (en) * | 2019-11-21 | 2020-03-27 | 抚顺罕王傲牛矿业股份有限公司 | Medium-length hole blasting one-time well completion method |
| CN111578798A (en) * | 2020-05-08 | 2020-08-25 | 安徽理工大学 | Undercutting blasting method based on energy-gathering pre-cutting and bottom strengthening throwing |
| CN111664763A (en) * | 2020-05-08 | 2020-09-15 | 安徽理工大学 | Slitting blasting method based on pre-cutting of cutting seams and bottom reinforced throwing |
| CN111895870A (en) * | 2020-07-26 | 2020-11-06 | 中国水利水电第七工程局有限公司 | Inclined shaft blasting particle size control method |
| CN111895870B (en) * | 2020-07-26 | 2022-07-05 | 中国水利水电第七工程局有限公司 | Inclined shaft blasting particle size control method |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
| CN114264202A (en) * | 2021-08-16 | 2022-04-01 | 北方工业大学 | Rock roadway deep hole layered cut blasting method |
| CN114264202B (en) * | 2021-08-16 | 2023-05-12 | 北方工业大学 | Rock roadway deep hole layered slitting blasting method |
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Application publication date: 20140212 |