CN102494574B - Combined blasting method of tunneling electronic detonator and detonator with shock-conducting tube - Google Patents
Combined blasting method of tunneling electronic detonator and detonator with shock-conducting tube Download PDFInfo
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- CN102494574B CN102494574B CN201110402677.4A CN201110402677A CN102494574B CN 102494574 B CN102494574 B CN 102494574B CN 201110402677 A CN201110402677 A CN 201110402677A CN 102494574 B CN102494574 B CN 102494574B
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Abstract
The invention discloses a combined blasting method of a tunneling electronic detonator and a detonator with a shock-conducting tube, relates to the field of tunnel and underground engineering drilling and blasting construction, and is used for solving the problems that when millisecond control basting is carried out by adopting the detonator with the shock-conducting tube individually for the tunneling blasting, the caused danger for stability of tunnel surrounding rocks, and the surrounding buildings and people is serious, and when vibration reduction blasting is carried out by adopting an electronic detonator individually for the tunneling blasting, the high cost is caused for the tunneling blasting. The method comprises the following steps: mounting electronic detonators in a first stage cuthole, a second stage cuthole and a third stage cuthole, and mounting 15 detonators with shock-conducting tubes in a periphery hole; and then determining the types of the detonators in other cutholes according to delay time of the electronic detonators blasting finally. Compared with the vibration reduction blasting by adopting the detonator with the shock-conducting tube individually for the tunneling blasting, the blasting vibration is reduced by more than 40-60%, compared with the cost of by adopting the detonator with the shock-conducting tube individually for the tunneling blasting, the blasting cost is lowered by more than 50-60%, and the blasting method has a wide application prospect in blasting construction of urban region tunnel and underground engineering.
Description
Technical field
Tunnel and underground engineering construction of explosion.
Technical background
When Tunnel Blasting adopts Nonel detonator to carry out Millisecond Controlled Blasting, the blasting vibration of generation, shock wave, slungshot, noise are large, and the harm that the stability of tunnel surrounding, near building and people are caused is large.
Tunnel Blasting adopts electric detonator to fall while shaking explosion, and blasting vibration can reduce a lot, still, because electric detonator price is high, causes Tunnel Blasting cost high.
Summary of the invention
Technical problem to be solved by this invention is, harm when Tunnel Blasting adopts separately Nonel detonator to carry out Millisecond Controlled Blasting, the stability of tunnel surrounding, near building and people being caused is large, and Tunnel Blasting adopts separately electric detonator to fall while shaking explosion, to cause the problem that Tunnel Blasting cost is high.
The present invention solves the technical scheme of its technical problem:
Tunnel electronic detonator is combined the method for ignition with Nonel detonator, and the method comprises the following steps:
Step 1 is pressed three grades of angled cut method blasthole drillings of tradition: snubber, avalanche eye, base plate eye, periphery hole.
Snubber is divided into three grades: first order snubber, second level snubber, third level snubber; Every grade of snubber is divided into two groups of boreholes that quantity is equal, with tunnel center line axial symmetry, arranges.
Avalanche eye: limit portion avalanche eye, top avalanche eye.
Limit portion avalanche eye is arranged with tunnel center line axial symmetry, each N row limit portion avalanche eye of left and right, from tunnel center line nearest one classify the 1st row limit portion avalanche eye as, then, be followed successively by from the near to the remote the 2nd row limit portion avalanche eye, the 3rd row limit portion avalanche eye ..., N row portion avalanche eye, N=1,2,3,4 or 5.
Top avalanche eye be divided into from bottom to top first row top avalanche eye, second row top avalanche eye ..., M row top avalanche eye, every row top avalanche eye is arranged with tunnel center line axial symmetry, M=1,2,3,4 or 5.
Base plate eye is arranged with tunnel center line axial symmetry.
Periphery hole is arranged with tunnel center line axial symmetry.
Step 2 is installed on explosive, detonator in the borehole on tunnel tunnel face.
Step 3 connects blasting circuit.
The whether conducting of step 4 test blasting circuit.
Step 5 is detonated.
In step 2, detonator is selected electric detonator and Nonel detonator.
Electric detonator is installed in snubber.
15 sections of Nonel detonators are installed in periphery hole.
When the electric detonator delay time finally detonating is when being more than or equal to 200ms and being less than or equal to 250ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if there is last the 3rd row's top avalanche eye, last the 3rd row's top avalanche intraocular is installed 9 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 250ms and being less than or equal to 300ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 300ms and being less than or equal to 400ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 400ms and being less than or equal to 500ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 500ms and being less than or equal to 600ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face.
When the electric detonator delay time finally detonating is when being greater than 600ms and being less than or equal to 750ms, base plate intraocular is installed 14 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face.
When the electric detonator delay time finally detonating is when being greater than 750ms and being less than or equal to 900ms, on tunnel tunnel face, other borehole is installed electric detonator.
When step 3 connects blasting circuit, first by Nonel detonator grouping, 2～15 every group; Every group is 0ms with a delay time electric detonator is connected; All electric detonators connect into initiation net by parallel way.
The present invention compares had beneficial effect with prior art:
The present invention adopts tunnel electronic detonator and the Nonel detonator associating method of ignition, the vibration producing during than the independent employing Nonel detonator of Tunnel Blasting Millisecond Controlled Blasting reduces more than 40～60%, than the independent employing electric detonator of Tunnel Blasting, fall cost while shaking explosion more than 50～60, is with a wide range of applications in the blast working of metropolitan district tunnel and underground engineering.
Accompanying drawing explanation
Borehole layout drawing on Fig. 1 tunnel tunnel face.
The specific embodiment
Embodiment one
Tunnel electronic detonator is combined the method for ignition with Nonel detonator, and the method comprises the following steps:
Step 1 is pressed three grades of angled cut method blasthole drillings of tradition: snubber, avalanche eye, base plate eye, periphery hole.
Snubber is divided into three grades: first order snubber, second level snubber, third level snubber; Every grade of snubber is divided into two groups of boreholes that quantity is equal, with tunnel center line axial symmetry, arranges.
Avalanche eye: limit portion avalanche eye, top avalanche eye.
Limit portion avalanche eye is arranged with tunnel center line axial symmetry, each N row limit portion avalanche eye of left and right, from tunnel center line nearest one classify first row limit portion avalanche eye as, then, be followed successively by from the near to the remote secondary series limit portion avalanche eye, the 3rd row limit portion avalanche eye ..., N row portion avalanche eye, N=1,2,3,4 or 5.
Top avalanche eye be divided into from bottom to top first row top avalanche eye, second row top avalanche eye ..., M row top avalanche eye, every row top avalanche eye is arranged with tunnel center line axial symmetry, M=1,2,3,4 or 5.
Base plate eye is arranged with tunnel center line axial symmetry.
Periphery hole is arranged with tunnel center line axial symmetry.
Step 2 is installed on explosive, detonator in the borehole on tunnel tunnel face.
Detonator is selected electric detonator and Nonel detonator.
Electric detonator is installed in snubber.
15 sections of Nonel detonators are installed in periphery hole.
When the electric detonator delay time finally detonating is when being more than or equal to 200ms and being less than or equal to 250ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if there is last the 3rd row's top avalanche eye, last the 3rd row's top avalanche intraocular is installed 9 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 250ms and being less than or equal to 300ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 300ms and being less than or equal to 400ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 400ms and being less than or equal to 500ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole.
When the electric detonator delay time finally detonating is when being greater than 500ms and being less than or equal to 600ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face.
When the electric detonator delay time finally detonating is when being greater than 600ms and being less than or equal to 750ms, base plate intraocular is installed 14 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face.
When the electric detonator delay time finally detonating is when being greater than 750ms and being less than or equal to 900ms, on tunnel tunnel face, other borehole is installed electric detonator.
When step 3 connects blasting circuit, first by Nonel detonator grouping, 2～15 every group; Every group is 0ms with a delay time electric detonator is connected; All electric detonators connect into initiation net by parallel way.
The whether conducting of step 4 test blasting circuit.
Step 5 is detonated.
Embodiment two
Tunnel electronic detonator is combined the method for ignition with Nonel detonator, and step is as follows:
Step 1 is pressed three grades of angled cut method blasthole drillings of tradition: snubber, avalanche eye, base plate eye, periphery hole.
Snubber is divided into three grades: first order snubber, second level snubber, third level snubber; Every grade of six snubbers, are divided into two groups of boreholes that quantity is equal, with tunnel center line axial symmetry, arrange.
Avalanche eye: limit portion avalanche eye, top avalanche eye.
Limit portion avalanche eye is arranged with tunnel center line axial symmetry, left first, second and third row limit portion avalanche eye, right first, second and third row limit portion avalanche eye, three limit portion avalanche eyes of every row, from tunnel center line nearest one classify left and right first row limit portion avalanche eye as, outwards be followed successively by left and right secondary series limit portion avalanche eye, left and right the 3rd row limit portion avalanche eye.
Top avalanche eye, four rows, are respectively first row top avalanche eye, second row top avalanche eye, the 3rd row's top avalanche eye, the 4th row's top avalanche eye, eight of first row top avalanche eyes, six of second row top avalanche eyes from bottom to top; The 3rd four of row's top avalanche eyes, the 4th two of row's top avalanche eyes, every row top avalanche eye is arranged with tunnel center line axial symmetry.
14 of base plate eyes are arranged with tunnel center line axial symmetry.
26 of periphery holes, arrange with tunnel center line axial symmetry.
Borehole is arranged as shown in Figure 1.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 200ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 200ms is installed in the rightest or the most left borehole of first row top avalanche eye.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive, the 4th row's top avalanche intraocular is installed 13 sections of Nonel detonators and explosive, left and right the 3rd row limit portion avalanche intraocular is installed 12 sections of Nonel detonators and explosive, the 3rd row's top avalanche intraocular is installed 11 sections of Nonel detonators and explosive, secondary series limit, left and right portion avalanche intraocular is installed 10 sections of Nonel detonators and explosive, and avalanche intraocular in second row top is installed 9 sections of Nonel detonators and explosive; Other boreholes on face are first row top avalanche eye and first row limit, left and right portion avalanche eye.
Step 3 is divided into five groups 64 Nonel detonators, every group of number is respectively 13,13,13,13,12, then, the electric detonator that five delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4 all personnel withdraws explosion scene, then, adopts the whether conducting of electric detonator continuity test instrument test networking.If networking is different, search networking, find reason, and connect networking; If networking conducting, enters the step of detonating.
Step 5 adopts electronic detonator initiator to charge to networking, then detonates.
Embodiment three
Step 1 is with embodiment two.
The delay time that step 2 arranges the electric detonator finally detonating is 220ms, and the electric detonator that the delay time finally detonating is 220ms is installed on first row top avalanche intraocular, and other is with the step 2 in embodiment two.
Step 3 is with embodiment two.
Step 4 is with embodiment two.
Step 5 is with embodiment two.
Embodiment four
Step 1 is with embodiment two.
The delay time that step 2 arranges the electric detonator finally detonating is 250ms, and the electric detonator that the delay time finally detonating is 250ms is installed on first row top avalanche intraocular, and other is with the step 2 in embodiment two.
Step 3 is with embodiment two.
Step 4 is with embodiment two.
Step 5 is with embodiment two.
Embodiment five
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 260ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 260ms is installed on second row top avalanche intraocular.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive, the 4th row's top avalanche intraocular is installed 13 sections of Nonel detonators and explosive, left and right the 3rd row limit portion avalanche intraocular is installed 12 sections of Nonel detonators and explosive, the 3rd row's top avalanche intraocular is installed 11 sections of Nonel detonators and explosive, and secondary series limit, left and right portion avalanche intraocular is installed 10 sections of Nonel detonators and explosive.
Step 3 is divided into four groups 58 Nonel detonators, every group of number is respectively 15,15,15,13, then, the electric detonator that four delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4 is with embodiment two.
Step 5 is with embodiment two.
Embodiment six
Step 1 is with embodiment five.
The delay time that step 2 arranges the electric detonator finally detonating is 300ms, and the electric detonator that the delay time finally detonating is 300ms is installed on second row top avalanche intraocular, and other is with the step 2 in embodiment five.
Step 3 is with embodiment five.
Step 4 is with embodiment five.
Step 5 is with embodiment five.
Embodiment seven
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 310ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular, secondary series limit, left and right portion avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 310ms is installed on second row top avalanche intraocular.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive, the 4th row's top avalanche intraocular is installed 13 sections of Nonel detonators and explosive, left and right the 3rd row limit portion avalanche intraocular is installed 12 sections of Nonel detonators and explosive, and the 3rd row's top avalanche intraocular is installed 11 sections of Nonel detonators and explosive.
Step 3 is divided into four groups 52 Nonel detonators, every group of number is respectively 13,13,13,13, then, the electric detonator that four delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4 is with embodiment two.
Step 5 is with embodiment two.
Embodiment eight
Step 1 is with embodiment seven.
The delay time that step 2 arranges the electric detonator finally detonating is 400ms, and the electric detonator that the delay time finally detonating is 400ms is installed on second row top avalanche intraocular, and other is with the step 2 in embodiment seven.
Step 3 is with embodiment seven.
Step 4 is with embodiment seven.
Step 5 is with embodiment seven.
Embodiment nine
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 410ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular, secondary series limit, left and right portion avalanche intraocular, the 3rd row's top avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 410ms is installed on the 3rd row's top avalanche intraocular.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive, and the 4th row's top avalanche intraocular is installed 13 sections of Nonel detonators and explosive, and left and right the 3rd row limit portion avalanche intraocular is installed 12 sections of Nonel detonators and explosive.
Step 3 is divided into four groups 48 Nonel detonators, every group of number is respectively 12,12,12,12, then, the electric detonator that four delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4, step 5 are with embodiment two.
Embodiment ten
Step 1 is with embodiment nine.
The delay time that step 2 arranges the electric detonator finally detonating is 500ms, and the electric detonator that the delay time finally detonating is 500ms is installed on the 3rd row's top avalanche intraocular, and other is with the step 2 in embodiment nine.
Step 3, step 4, step 5 are with embodiment nine.
Embodiment 11
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 510ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular, secondary series limit, left and right portion avalanche intraocular, the 3rd row's top avalanche intraocular, left and right the 3rd row limit portion avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 510ms is installed on the 3rd row's top avalanche intraocular.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive, and the 4th row's top avalanche intraocular is installed 13 sections of Nonel detonators and explosive.
Step 3 is divided into three groups 42 Nonel detonators, every group of number is respectively 14,14,14, then, the electric detonator that three delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4, step 5 are with embodiment two.
Embodiment 12
Step 1 is with embodiment 11.
The delay time that step 2 arranges the electric detonator finally detonating is 600ms, and the electric detonator that the delay time finally detonating is 600ms is installed on the 3rd row's top avalanche intraocular, and other is with the step 2 in embodiment 11.
Step 3, step 4, step 5 are with embodiment 11.
Embodiment 13
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 610ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular, secondary series limit, left and right portion avalanche intraocular, the 3rd row's top avalanche intraocular, left and right the 3rd row limit portion avalanche intraocular, the 4th row's top avalanche intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 610ms is installed on the 4th row's top avalanche intraocular.
Base plate intraocular is installed 14 sections of Nonel detonators and explosive.
Step 3 is divided into three groups 40 Nonel detonators, every group of number is respectively 15,15, ten, then, the electric detonator that three delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4, step 5 are with embodiment two.
Embodiment 14
Step 1 is with embodiment 13.
The delay time that step 2 arranges the electric detonator finally detonating is 750ms, and the electric detonator that the delay time finally detonating is 750ms is installed on the 4th row's top avalanche intraocular, and other is with the step 2 in embodiment 13.
Step 3, step 4, step 5 are with embodiment 13.
Embodiment 15
Step 1 is with embodiment two.
Step 2 explosive and electric detonator be installed in first order snubber, in the snubber of the second level, in third level snubber.
Explosive and 15 sections of Nonel detonators are installed in periphery hole.
The firing order of borehole is snubber, avalanche eye, base plate eye, periphery hole.
The delay time that the electric detonator finally detonating is set is 760ms.
First row top avalanche intraocular, first row limit, left and right portion avalanche intraocular, second row top avalanche intraocular, secondary series limit, left and right portion avalanche intraocular, the 3rd row's top avalanche intraocular, left and right the 3rd row limit portion avalanche intraocular, the 4th row's top avalanche intraocular, base plate intraocular are installed electric detonator and explosive, and the electric detonator that the delay time finally detonating is 760ms is installed on the 4th row's top avalanche intraocular.
Step 3 is divided into two groups 26 Nonel detonators, every group of number is respectively 13,13, then, the electric detonator that two delay times are 0ms is set, the electric detonator that every group of Nonel detonator is 0ms with a delay time is connected, finally, all electric detonators adopt parallel way to form blasting circuit.
Step 4, step 5 are with embodiment two.
Embodiment 16
Step 1 is with embodiment 15.
The delay time that step 2 arranges the electric detonator finally detonating is 900ms, and the electric detonator that the delay time finally detonating is 900ms is installed on the 4th row's top avalanche intraocular, and other is with the step 2 in embodiment 15.
Step 3, step 4, step 5 are with embodiment 15.
Claims (1)
1. tunnel electronic detonator is combined the method for ignition with Nonel detonator, and the method comprises the following steps:
Step 1 is pressed three grades of angled cut method blasthole drillings of tradition: snubber, avalanche eye, base plate eye, periphery hole;
Snubber is divided into three grades: first order snubber, second level snubber, third level snubber; Every grade of snubber is divided into two groups of boreholes that quantity is equal, with tunnel center line axial symmetry, arranges;
Avalanche eye: limit portion avalanche eye, top avalanche eye;
Limit portion avalanche eye is arranged with tunnel center line axial symmetry, each N row limit portion avalanche eye of left and right, from tunnel center line nearest one classify first row limit portion avalanche eye as, then, be followed successively by from the near to the remote secondary series limit portion avalanche eye, the 3rd row limit portion avalanche eye ..., N row portion avalanche eye, N=1,2,3,4 or 5, last row are last row of the limit portion avalanche eye that sorts from the near to the remote with tunnel center line;
Top avalanche eye be divided into from bottom to top first row top avalanche eye, second row top avalanche eye ..., M row top avalanche eye, every row top avalanche eye is arranged with tunnel center line axial symmetry, M=1,2,3,4 or 5, last row is last row of the top avalanche eye that sorts from bottom to top;
Base plate eye is arranged with tunnel center line axial symmetry; Periphery hole is arranged with tunnel center line axial symmetry;
Step 2 is installed on explosive, detonator in the borehole on tunnel tunnel face;
Step 3 connects blasting circuit;
The whether conducting of step 4 test blasting circuit;
Step 5 is detonated;
It is characterized in that:
In step 2, detonator is selected electric detonator and Nonel detonator;
Electric detonator is installed in first, second, third grade of snubber;
15 sections of Nonel detonators are installed in periphery hole;
When the electric detonator delay time finally detonating is when being more than or equal to 200ms and being less than or equal to 250ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if there is last the 3rd row's top avalanche eye, last the 3rd row's top avalanche intraocular is installed 9 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole,
When the electric detonator delay time finally detonating is when being greater than 250ms and being less than or equal to 300ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if there is the second last row limit, left and right portion avalanche eye, left and right the second last row limit portion avalanche intraocular is installed 10 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole,
When the electric detonator delay time finally detonating is when being greater than 300ms and being less than or equal to 400ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if there is the second last row top avalanche eye, the second last row top avalanche intraocular is installed 11 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole;
When the electric detonator delay time finally detonating is when being greater than 400ms and being less than or equal to 500ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, last row limit portion avalanche intraocular of left and right is installed 12 sections of Nonel detonators, if also have other borehole on tunnel tunnel face, electric detonator is installed in other borehole;
When the electric detonator delay time finally detonating is when being greater than 500ms and being less than or equal to 600ms, base plate intraocular is installed 14 sections of Nonel detonators, last row's top avalanche intraocular is installed 13 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face;
When the electric detonator delay time finally detonating is when being greater than 600ms and being less than or equal to 750ms, base plate intraocular is installed 14 sections of Nonel detonators, and electric detonator is installed in other borehole on tunnel tunnel face;
When the electric detonator delay time finally detonating is when being greater than 750ms and being less than or equal to 900ms, on tunnel tunnel face, other borehole is installed electric detonator;
When step 3 connects blasting circuit, first by Nonel detonator grouping, 2～15 every group; Every group is 0ms with a delay time electric detonator is connected; All electric detonators connect into initiation net by parallel way.
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| CN105115371B (en) * | 2015-09-02 | 2017-05-03 | 中国水利水电第五工程局有限公司 | Split type wedge cut |
| CN106091848B (en) * | 2016-06-22 | 2018-03-27 | 四川路桥华东建设有限责任公司 | It is a kind of to realize overlength, the method for high inclination-angle tunnel anchorage top bar explosion |
| CN107560509A (en) * | 2017-09-27 | 2018-01-09 | 贵州安凯达实业股份有限公司 | A kind of explosion attachment structure for photoface exploision |
| CN114111478B (en) * | 2020-08-27 | 2023-10-27 | 西南科技大学 | Detonating circuit combining electronic detonator and detonating cord and construction method thereof |
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| EP0323687A1 (en) * | 1988-01-08 | 1989-07-12 | Shell Oil Company | Method of measuring, analysing, predicting and controlling vibrations induced by explosive blasting in earth formations |
| EP0692611A2 (en) * | 1994-07-13 | 1996-01-17 | SUNKYONG ENGINEERING & CONSTRUCTION LIMITED | Method for excavating a working face |
| 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 |
| CN201764913U (en) * | 2010-08-30 | 2011-03-16 | 中铁十九局集团有限公司 | Compound wedge-shaped cut |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0323687A1 (en) * | 1988-01-08 | 1989-07-12 | Shell Oil Company | Method of measuring, analysing, predicting and controlling vibrations induced by explosive blasting in earth formations |
| EP0692611A2 (en) * | 1994-07-13 | 1996-01-17 | SUNKYONG ENGINEERING & CONSTRUCTION LIMITED | Method for excavating a working face |
| 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 |
| CN201764913U (en) * | 2010-08-30 | 2011-03-16 | 中铁十九局集团有限公司 | Compound wedge-shaped cut |
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