CN102305581A - Method for realizing vibration reduction in tunnel cut blasting by using digital detonators - Google Patents
Method for realizing vibration reduction in tunnel cut blasting by using digital detonators Download PDFInfo
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- CN102305581A CN102305581A CN201110257661A CN201110257661A CN102305581A CN 102305581 A CN102305581 A CN 102305581A CN 201110257661 A CN201110257661 A CN 201110257661A CN 201110257661 A CN201110257661 A CN 201110257661A CN 102305581 A CN102305581 A CN 102305581A
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Abstract
The invention relates to a method for realizing vibration reduction effect in tunnel cut blasting by using digital detonators. The method comprises the following steps: (1)designing a cut detonator arrangement diagram: drilling cut holes on the left and right sides of a cut region, and then numbering the cut holes on the left and right sides of the cut region by using a Z-shaped numbering method; (2) installing digital detonators: installing digital detonators in the cut holes obtained in the step (1); and (3) detonating the digital detonators: setting delay blasting times for the digital detonators in each cut hole, then detonating the digital detonators in the cut holes in sequence, thereby achieving an vibration reduction effect. By using the method provided by the invention, the blasting sequence and time interval of the cut holes can be accurately controlled, and the vibration intensity of a blast wave in each hole can be counteracted through the time interval, thereby furthest reducing the influence of blasting on the environment.
Description
Technical field
The present invention relates to the Cut Blasting construction method in a kind of ground underground engineering, relate in particular to a kind of method that digital primer is realized tunnel Cut Blasting damping of using.
Background technology
Drilling and blasting method is main method at present in the Construction of Urban Rail Traffic of ground consisting of hard rock; In set of tunneling construction; Cut Blasting is the important technology content in the blasting engineering, and the quality of its effect all has bigger influence to driving speed, driving work efficiency and excavation cost.The effect of Cut Blasting is to form vallecular cavity, for creating the scope of freedom and catalase and throwing space in the big gun hole that the back is quick-fried, so that good blasting condition is provided and obtains higher blasting efficiency for follow-up explosion.
Traditional drilling and blasting method adopts plain detonator; But in the intensive urban area of building; The construction vibration is had relatively high expectations; Plain detonator has significant limitation; The blasting vibration that plain detonator produces is too big, and a lot of places have had a strong impact on the live and work of urban transportation and face of land resident and enterprises and institutions.There is following problem in the construction of tradition vibration damping: when (1) tunnel buffer blasting adopts plain detonator; Owing to receive the restriction of detonator section; The explosion defer time can't be adjusted flexibly; The method that adopts branch's explosion in the construction is to reach the purpose of vibration damping; But working procedure is more; Personnel labor intensity is big, and at the bottom of the work efficiency, and safety and construction speed are difficult to guarantee.(2) big, the good in integrity of country rock hardness, geological conditions is unfavorable for the control of explosion vibration velocity, common buffer blasting often is difficult to reach the vibration damping requirement in the more shallow location of buried depth.(3) adopt non-blast working then need once drop into a large amount of plant equipment, various expense for using mechanical equipments, maintenance expense and operator's expenses of labour etc. can increase engineering cost greatly, and construction speed is subjected to mechanical service condition restriction often also to be difficult to guarantee.
Summary of the invention
For solving the problems of the technologies described above, the present invention provides a kind of blasting sequence and the time interval that can accurately control keyhole, and the application digital primer that reaches damping is realized the method for tunnel Cut Blasting damping.
Application digital primer of the present invention is realized the method for tunnel Cut Blasting damping, may further comprise the steps:
1) design slotting detonator layout drawing: bore keyhole in the left and right sides, slotting zone, adopt the zigzag method for numbering serial that left and right sides keyhole is numbered then;
2) installing digital primer: in the keyhole that obtains through step 1), install digital primer;
3) digital primer that detonates: set the delaying blasting time of the digital primer in each keyhole, ignite the digital primer in the keyhole then in order, realize damping effect.
Application digital primer of the present invention is realized the method for tunnel Cut Blasting damping; Said zigzag method for numbering serial is: at first in the middle of left side, slotting zone, selecting a hole is the number one hole; Be No. second hole in hole of correspondence position selection, right side, slotting zone then; Secondly select No. three holes of a Kong Weidi in the first hole bottom or top; Select No. four holes of a Kong Weidi on right side, slotting zone with corresponding position, No. three hole; In the number one hole or the upside in No. three hole or downside select No. five holes of a Kong Weidi; Select No. six holes of a Kong Weidi on right side, slotting zone with corresponding position, No. five hole; Thresh above step, the keyhole numbering is finished.
Application digital primer of the present invention is realized the method for tunnel Cut Blasting damping; In step 3); The delaying blasting time of setting each keyhole is: the number one hole is 0ms; The blasting time in two holes of adjacent numbering is set at 3ms at interval, confirms the burst time of each digital primer according to the delaying blasting time.
Beneficial effect compared with prior art of the present invention is: the method for application digital primer realization tunnel Cut Blasting damping of the present invention can accurately be controlled the blasting sequence and the time interval of keyhole; Offset the shockproofness of each hole blast wave through the time interval, reduced the influence of explosion to greatest extent environment.
Description of drawings
Fig. 1 is that the described application digital primer of the embodiment of the invention is realized section blast hole position view in the method for tunnel Cut Blasting damping.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to illustrate the present invention, but are not used for limiting scope of the present invention.
As shown in Figure 1, a kind of method of using digital primer realization tunnel Cut Blasting damping may further comprise the steps:
1) design slotting detonator layout drawing: bore keyhole in the left and right sides, slotting zone, adopt the zigzag method for numbering serial that left and right sides keyhole is numbered then;
2) installing digital primer: in the keyhole that obtains through step 1), install digital primer;
3) digital primer that detonates: set the delaying blasting time of the digital primer in each keyhole, ignite the digital primer in the keyhole then in order, realize damping effect.
Application digital primer of the present invention is realized the method for tunnel Cut Blasting damping; Said zigzag method for numbering serial is: at first in the middle of left side, slotting zone, selecting a hole is the number one hole; Be No. second hole in hole of correspondence position selection, right side, slotting zone then; Secondly select No. three holes of a Kong Weidi in the first hole bottom or top; Select No. four holes of a Kong Weidi on right side, slotting zone with corresponding position, No. three hole; In the number one hole or the upside in No. three hole or downside select No. five holes of a Kong Weidi; Select No. six holes of a Kong Weidi on right side, slotting zone with corresponding position, No. five hole; Thresh above step, the keyhole numbering is finished.
Application digital primer of the present invention is realized the method for tunnel Cut Blasting damping; In step 3); The delaying blasting time of setting each keyhole is: the number one hole is 0ms; The blasting time in two holes of adjacent numbering is set at 3ms at interval, confirms the burst time of each digital primer according to the delaying blasting time.
Application digital primer of the present invention is realized in the method for tunnel Cut Blasting damping; The electric detonator utilization can accurate timing electronic original part replaced the delay powder in the electric cap, but and added some reason field programing functions that improve flexibility easy to use on this basis, improved the online measuring ability and the safety precautions such as antistatic, preventing RF of detonator property.The extension time of ignition of electric detonator, by its inner miniature electronic chip controls, at present, the time-delay departure has reached the 0.1ms order of magnitude, and along with the raising of microelectric technique level, is expected to further improve its control accuracy.Digital primer has the following advantages: (1) digital primer has online program capability in the two-way group-net communication of two-wire system, the hole, can realize setting in the hole of wide region, closely-spaced extension data, and the accuracy of detonating is good.The detonator state can onlinely detect, but defer time on-line calibration, blasting circuit reliability high, the built-in password that detonates of detonator, embedded anti-interference buffer circuit, and networking simplicity of design, easy for operation, safety, precision is high.(2) full face tunneling fall shake aspect, broken through plain detonator section restriction, utilize " the maximum velocity value of Blasting Excavation is decided by the maximum dosage of certain single hop " damping theory of blasting to realize that single hole detonates fair the branch, thereby fallen at the end explosion vibration velocity greatly.(3) under the same conditions, reduced the operation circulation, fallen at the end working strength of workers, raising by a relatively large margin operating efficiency.(4) identical excavation drilling depth, every linear meter(lin.m.) cost consumption reduces 30% on year-on-year basis.The method of application digital primer realization tunnel Cut Blasting damping of the present invention can accurately be controlled the blasting sequence and the time interval of keyhole; Offset the shockproofness of each hole blast wave through the time interval, reduced the influence of explosion to greatest extent environment.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. use the method that digital primer is realized tunnel Cut Blasting damping for one kind, it is characterized in that, may further comprise the steps:
1) design slotting detonator layout drawing: bore keyhole in the left and right sides, slotting zone, adopt the zigzag method for numbering serial that left and right sides keyhole is numbered then;
2) installing digital primer: in the keyhole that obtains through step 1), install digital primer;
3) digital primer that detonates: set the delaying blasting time of the digital primer in each keyhole, ignite the digital primer in the keyhole then in order, realize damping effect.
2. application digital primer according to claim 1 is realized the method for tunnel Cut Blasting damping; It is characterized in that; Said zigzag method for numbering serial is: at first in the middle of left side, slotting zone, selecting a hole is the number one hole; Be No. second hole in hole of correspondence position selection, right side, slotting zone then; Secondly select No. three holes of a Kong Weidi in the first hole bottom or top; Select No. four holes of a Kong Weidi on right side, slotting zone with corresponding position, No. three hole; In the number one hole or the upside in No. three hole or downside select No. five holes of a Kong Weidi; Select No. six holes of a Kong Weidi on right side, slotting zone with corresponding position, No. five hole; Thresh above step, the keyhole numbering is finished.
3. application digital primer according to claim 1 and 2 is realized the method for tunnel Cut Blasting damping; It is characterized in that: in step 3); The delaying blasting time of setting each keyhole is: the number one hole is 0ms; The blasting time in two holes of adjacent numbering is set at 3ms at interval, confirms the burst time of each digital primer according to the delaying blasting time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110257661A CN102305581A (en) | 2011-09-01 | 2011-09-01 | Method for realizing vibration reduction in tunnel cut blasting by using digital detonators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110257661A CN102305581A (en) | 2011-09-01 | 2011-09-01 | Method for realizing vibration reduction in tunnel cut blasting by using digital detonators |
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| CN102305581A true CN102305581A (en) | 2012-01-04 |
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| CN201110257661A Pending CN102305581A (en) | 2011-09-01 | 2011-09-01 | Method for realizing vibration reduction in tunnel cut blasting by using digital detonators |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422353A (en) * | 2013-08-27 | 2015-03-18 | 李立华 | Linear tunneling blasting roadway wing expansion cutting method |
| CN108413821A (en) * | 2018-03-21 | 2018-08-17 | 长安大学 | Mintrop wave based on electronic digital detonator inhibits blasting construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061460A (en) * | 1991-10-31 | 1992-05-27 | 广西大学 | Expand end cavity Cut Blasting method and cut utensil thereof |
| CN1120114A (en) * | 1994-07-13 | 1996-04-10 | 鲜京建设株式会社 | Method for excavating a working face |
-
2011
- 2011-09-01 CN CN201110257661A patent/CN102305581A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061460A (en) * | 1991-10-31 | 1992-05-27 | 广西大学 | Expand end cavity Cut Blasting method and cut utensil thereof |
| CN1120114A (en) * | 1994-07-13 | 1996-04-10 | 鲜京建设株式会社 | Method for excavating a working face |
Non-Patent Citations (1)
| Title |
|---|
| 车大兵: "新建永和隧道的减震爆破施工技术总结", 《西部探矿工程》, no. 1, 31 December 2007 (2007-12-31), pages 142 - 145 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422353A (en) * | 2013-08-27 | 2015-03-18 | 李立华 | Linear tunneling blasting roadway wing expansion cutting method |
| CN104422353B (en) * | 2013-08-27 | 2017-03-08 | 李立华 | Excavation explosion straight line expands wing slotting method |
| CN108413821A (en) * | 2018-03-21 | 2018-08-17 | 长安大学 | Mintrop wave based on electronic digital detonator inhibits blasting construction method |
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Application publication date: 20120104 |