CN102519322A - Blasting method based on joint control of hole inside energy accumulation blasting and smooth blasting - Google Patents
Blasting method based on joint control of hole inside energy accumulation blasting and smooth blasting Download PDFInfo
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- CN102519322A CN102519322A CN2011104023812A CN201110402381A CN102519322A CN 102519322 A CN102519322 A CN 102519322A CN 2011104023812 A CN2011104023812 A CN 2011104023812A CN 201110402381 A CN201110402381 A CN 201110402381A CN 102519322 A CN102519322 A CN 102519322A
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Abstract
The invention relates to a blasting method based on joint control of hole inside energy accumulation blasting and smooth blasting. The method comprises the steps of: (1) defining a peripheral profile line for a blasting excavation region, and arranging a micro-difference blasting hole in a main body blasting excavation region; (2) arranging a smooth blasting hole along the peripheral profile line in the blasting excavation region; (3) arranging a hole-inside-energy-accumulation blasting hole at one side of a reserved smooth layer close to the main body blasting excavation region in the peripheral profile line of the blasting excavation region; (4) performing hole inside energy accumulation blasting charge on a hole inside energy accumulation blasting explosive column with V-shaped grooves, and arranging low section detonators in the explosive column; (5) performing blasting charge on the micro-difference blasting hole, and arranging micro-difference blasting detonators; (6) performing blasting charge on the smooth blasting hole, and arranging the detonators; (7) blocking the blasting holes; (8) connecting a priming network for blasting; (9) deslagging; and (10) repeating the above steps until completion of excavation. According to the blasting method based on joint control of hole inside energy accumulation blasting and smooth blasting provided by the invention, the wall forming quality of a reserved rock body is improved while the damage and cracking of the reserved rock body are reduced to maximum extent.
Description
Technical field
The present invention relates to a kind of controlled blasting technology, relate in particular to hole cohesive energy explosion and photoface exploision and jointly control blasting procedure.
Background technology
Photoface exploision is through boring and the powder charge correct to enforcement on the Blasting Excavation district peripheral profile line; Quick-fried except that behind the rock mass in main body Blasting Excavation district; Detonating is arranged in the blast hole cartridge bag on the peripheral profile line again, will reserve that light surface layer is fried to be removed, and reaches the sphere of action and the direction of controlled blasting; Rock mass excavation facial contour is adhered to specification, form a kind of blasting technique of smooth hydraulically smooth surface.
Utilize vertical with charge surface or the vertical substantially rule of the detonation product direction of motion; Make the powder charge of special shape; Detonation product is gathered together towards the certain orientation motion, improve energy-flux density, strengthen blasting effect; This is the CUMULATIVE BLASTING effect, and correspondingly this sharp powder charge is called beehive-shaped charge; The line style beehive-shaped charge is a kind of of beehive-shaped charge; Make two sockets for collecting energy along cylindric powder charge axis at the two ends of cylindrical cross-section diameter; Or the line style cumulative powder column that is embedded in metal liner in the cave places the presplit blasting hole; Two sockets for collecting energy are aimed at the through crack direction of design, utilize the blasting energy acting in conjunction of cumulative high-speed jet and powder column to form through crack, are called hole cohesive energy explosion.
Compare with common blasting method, it is smooth that photoface exploision and hole cohesive energy explosion all have the wall of making, and reduce the rock mass disturbance, and reducing explosion influences the degree of depth, and favourable reservation rock mass is stable, thus the effect of the safety of realization, economic excavation.But along with the raising of engineering construction to the blasting technique requirement; For example the part of precision machinery pier is removed, the excavation of extraordinary underground engineering, the driving in permanent tunnel, great slope project cut slope etc.; Must take very strict safeguard measure; Do not allow to produce and destroy, all require to strengthen to keeping the protection of rock mass, and adopt photoface exploision or CUMULATIVE BLASTING can not adapt to separately to keep rock mass and surrounding environment to need the requirement of strict protection keeping rock mass.
Summary of the invention
Technical problem to be solved by this invention provides a kind of hole cohesive energy explosion and photoface exploision that when reducing to greatest extent the damage that keeps rock mass broken, improves excavation area periphery wall forming quality and jointly controls blasting procedure.
For addressing the above problem, hole of the present invention cohesive energy explosion and photoface exploision jointly control blasting procedure, may further comprise the steps:
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district, arrange the short-delay blasting hole;
(2) the peripheral profile line arranged light face blast hole along said Blasting Excavation district;
(3) within said Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole of a side that light surface layer leans on said main body Blasting Excavation district; The thickness of said reservation light surface layer is: the distance between the plane that reservation rock mass wall that said Blasting Excavation district periphery will form and said hole cohesive energy blast hole axis constitute; Just and with the distance between the through crack plane that forms, that is the minimum burden of photoface exploision;
(4) casting or compacting have the powder column of V-shaped groove respectively along axis direction at the diameter two ends, or dig out the powder column that has V-shaped groove along axis direction respectively at the diameter two ends, and in said powder column, lay a low section detonator; Then said powder column is placed said hole cohesive energy blast hole, the V-shaped groove of said powder column is in the said through crack plane that forms; Said powder column powder charge is a rock explosive; Said hole cohesive energy blast hole by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging;
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the said main body Blasting Excavation district, and begin compartment laying short-delay blasting detonator than said hole cohesive energy blast hole Senior Two section;
(6) according to the type of rock mass blast charging is carried out by the coefficient of coup 1.5～2.5 not in said photoface exploision hole, and lay detonator than the highest section Senior Two section in said main body Blasting Excavation district; Linear charging density was 70～120g/m when wherein said rock mass belonged to soft rock, during said rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when said rock mass belonged to hard rock;
(7) the short-delay blasting hole in the said main body Blasting Excavation district, said hole cohesive energy blast hole and said photoface exploision hole are stopped up;
(8) connect blasting circuit, implement once detonation, carry out short-delay blasting, the low section detonator explosion at first of laying in the cohesive energy blast hole of promptly said hole, the short-delay blasting hole compartment of following in the said main body Blasting Excavation district detonates, and detonate in last said photoface exploision hole;
(9) slag tap;
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
The diameter in photoface exploision hole is 38～42mm in the said step (2), and the pitch of holes in said photoface exploision hole is 0.6～0.9 times of said reservation light surface layer thickness.
Reservation light surface layer thickness is 10～20 times said photoface exploision bore dia in the said step (2).
The diameter of said step (3) mesopore cohesive energy blast hole is identical with the diameter in said photoface exploision hole, and the pitch of holes of said hole cohesive energy blast hole is 10～35 times of said hole cohesive energy blast hole diameter.
Replace step (4) described in the claim 1 with following method: casting or compacting have the powder column of V-shaped groove respectively at the diameter two ends along axis direction; Or dig out the powder column that has V-shaped groove respectively at the diameter two ends, and in said powder column, lay a low section detonator along axis direction; Then in the V-shaped groove of said powder column, embed cavity liner respectively, form powder column with two V-arrangement cavity liners; Then said powder column is placed said hole cohesive energy blast hole, the V-shaped groove of said powder column is in the said through crack plane that forms; Said powder column powder charge is TNT and hexogen; Said hole cohesive energy blast hole by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
Replace step (4) described in the claim 1 with following method: casting or compacting have the powder column of V-shaped groove respectively at the diameter two ends along axis direction; Or dig out the powder column that has V-shaped groove respectively at the diameter two ends, and in said powder column, lay a low section detonator along axis direction; Then said powder column is placed the cylinder that has two V-arrangement cavity liners; Then said powder charge cylinder is placed said hole cohesive energy blast hole, the V-shaped groove of said powder column is in the said through crack plane that forms; Said powder column powder charge is TNT and hexogen; Said hole cohesive energy blast hole by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
Replace step (8) described in the claim 1 with following method: connect blasting circuit, the said hole cohesive energy blast hole that detonates earlier, the short-delay blasting hole in the said main body Blasting Excavation of then the detonating district, the said photoface exploision hole of detonating at last.
The present invention compared with prior art has the following advantages:
The present invention is detonated prior to main body Blasting Excavation district blast hole through hole cohesive energy blast hole, is reserving between light surface layer and the main body Blasting Excavation district, and the cumulative that forms through the CUMULATIVE BLASTING with the powder column of two V-shaped grooves flows; V-shaped groove make rock mass be broken into seam on the right blast hole wall, then detonation product further acts on, thus control crack occurrence direction; And formation has the through crack of certain width; Main body Blasting Excavation district is separated with the rock mass of reserving light surface layer, the destruction that keeps rock mass with disturbance the time, is utilized the buffering area of reservation light surface layer as main body Blasting Excavation district blast action thereby effectively reduce explosion by the through crack that hole cohesive energy explosion forms; Implement protection to keeping rock mass; After treating the district's explosion of main body Blasting Excavation, adopt photoface exploision to make to reserve the light surface layer rock mass to fall, stay smooth wall along the predetermined profile face is quick-fried; And make and keep the rock mass damage and be effectively controlled, favourable reservation rock mass stable.
Therefore, through cohesive energy explosion of Combined application hole and smooth Surface Blasting Technology, not only by photoface exploision control out break; Improve forming quality, and reduce the support work amount, practice thrift support material; Reduce engineering cost, improved construction quality simultaneously, accelerated project progress.
Description of drawings
Do further detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is the powder column sketch map that has two V-shaped grooves of the present invention.
Fig. 2 is the powder column sketch map that has two V-arrangement drug-shaped covers of the present invention.
Fig. 3 is the powder charge cylinder sketch map that has two V-arrangement drug-shaped covers of the present invention.
Fig. 4 is a cohesive energy blast hole powder charge sketch map in hole of the present invention.
Fig. 5 is a Blasting Excavation of the present invention district sketch map.
Fig. 6 is a Blasting Excavation of the present invention district A-A cutaway view.
Among the figure: 1-powder column 2-V shape groove 3-drug-shaped cover 4-cylinder 5-hole cohesive energy blast hole 6-through crack plane 7-main body Blasting Excavation district 8-reserves light surface layer 9-and keeps rock mass wall 10-photoface exploision hole.
The specific embodiment
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district 7, arrange the short-delay blasting hole.
(2) the peripheral profile line arranged light face blast hole 10 along the Blasting Excavation district.
Wherein: the diameter in photoface exploision hole 10 is 38～42mm.
(3) within Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole 5 of side that light surface layer 8 leans on main body Blasting Excavation district 7; The thickness of reserving light surface layer 8 is: the distance between the plane that reservation rock mass wall 9 that Blasting Excavation district periphery will form and hole cohesive energy blast hole 5 axis constitute; Just and with the distance between the through crack plane 6 that forms, that is the minimum burden of photoface exploision.
Wherein: the pitch of holes in photoface exploision hole 10 is 0.6～0.9 times of reservation light surface layer 8 thickness, and reservation light surface layer 8 thickness are 10～20 times photoface exploision hole 10 diameters.
The diameter of hole cohesive energy blast hole 5 is identical with the diameter in photoface exploision hole 10, and the pitch of holes of hole cohesive energy blast hole 5 is 10～35 times of hole cohesive energy blast hole 5 diameters.
(4) casting or compacting have the powder column 1 of V-shaped groove 2 respectively along axis direction at the diameter two ends, or dig out the powder column 1 that has V-shaped groove 2 respectively at the diameter two ends along axis direction, and in powder column 1, lay a low section detonator; Then powder column 1 is placed hole cohesive energy blast hole 5, the V-shaped groove 2 of powder column 1 is in the through crack plane 6 that forms; Powder column 1 powder charge is a rock explosive; Hole cohesive energy blast hole 5 by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the main body Blasting Excavation district 7, and begin compartment laying short-delay blasting detonator than hole cohesive energy blast hole 5 Senior Two sections.
(6) carry out blast charging by the coefficient of coup 1.5～2.5 not according to the class of rock mass in the phototropic face blast hole 10, and than the 7 the highest sections Senior Two sections layings in main body Blasting Excavation district detonator.
Linear charging density was 70～120g/m when wherein rock mass belonged to soft rock, during rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when rock mass belonged to hard rock.
(7) short-delay blasting hole, hole cohesive energy blast hole 5 and photoface exploision hole 10 in the main body Blasting Excavation district 7 are stopped up.
(8) connect blasting circuit, implement once detonation, carry out short-delay blasting, the low section detonator explosion at first of promptly laying in the hole cohesive energy blast hole 5, then the short-delay blasting hole compartment in the main body Blasting Excavation district 7 detonates, and detonate in last photoface exploision hole 10.
(9) slag tap.
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district 7, arrange the short-delay blasting hole.
(2) the peripheral profile line arranged light face blast hole 10 along the Blasting Excavation district.
Wherein: the diameter in photoface exploision hole 10 is 38～42mm.
(3) within Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole 5 of side that light surface layer 8 leans on main body Blasting Excavation district 7; The thickness of reserving light surface layer 8 is: the distance between the plane that reservation rock mass wall 9 that Blasting Excavation district periphery will form and hole cohesive energy blast hole 5 axis constitute; Just and with the distance between the through crack plane 6 that forms, that is the minimum burden of photoface exploision.
Wherein: the pitch of holes in photoface exploision hole 10 is 0.6～0.9 times of reservation light surface layer 8 thickness, and reservation light surface layer 8 thickness are 10～20 times photoface exploision hole 10 diameters.
The diameter of hole cohesive energy blast hole 5 is identical with the diameter in photoface exploision hole 10, and the pitch of holes of hole cohesive energy blast hole 5 is 10～35 times of hole cohesive energy blast hole 5 diameters.
(4) casting or compacting have the powder column 1 of V-shaped groove 2 respectively along axis direction at the diameter two ends, or dig out the powder column 1 that has V-shaped groove 2 respectively at the diameter two ends along axis direction, and in powder column 1, lay a low section detonator; Then in the V-shaped groove 2 of powder column 1, embed cavity liner 3 respectively, form powder column 1 with two V-arrangement cavity liners 3; Then powder column 1 is placed hole cohesive energy blast hole 5, the V-shaped groove 2 of powder column 1 is in the through crack plane 6 that forms; Powder column 1 powder charge is TNT and hexogen; Hole cohesive energy blast hole 5 by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the main body Blasting Excavation district 7, and begin compartment laying short-delay blasting detonator than hole cohesive energy blast hole 5 Senior Two sections.
(6), and lay detonator than the 7 the highest sections Senior Two sections in main body Blasting Excavation district according to carrying out blast charging by the coefficient of coup 1.5～2.5 not in the type phototropic face blast hole of rock mass 10.
Linear charging density was 70～120g/m when wherein rock mass belonged to soft rock, during rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when rock mass belonged to hard rock.
(7) short-delay blasting hole, hole cohesive energy blast hole 5 and photoface exploision hole 10 in the main body Blasting Excavation district 7 are stopped up.
(8) connect by blasting circuit, play blast hole cohesive energy blast hole 5, the short-delay blasting hole in the main body of then the detonating Blasting Excavation district 7, the said photoface exploision hole 10 of detonating at last earlier.
(9) slag tap.
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district 7, arrange the short-delay blasting hole.
(2) the peripheral profile line arranged light face blast hole 10 along the Blasting Excavation district.
Wherein: the diameter in photoface exploision hole 10 is 38～42mm.
(3) within Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole 5 of side that light surface layer 8 leans on main body Blasting Excavation district 7; The thickness of reserving light surface layer 8 is: the distance between the plane that reservation rock mass wall 9 that Blasting Excavation district periphery will form and hole cohesive energy blast hole 5 axis constitute; Just and with the distance between the through crack plane 6 that forms, that is the minimum burden of photoface exploision.
Wherein: the pitch of holes in photoface exploision hole 10 is 0.6～0.9 times of reservation light surface layer 8 thickness, and reservation light surface layer 8 thickness are 10～20 times photoface exploision hole 10 diameters.
The diameter of hole cohesive energy blast hole 5 is identical with the diameter in photoface exploision hole 10, and the pitch of holes of hole cohesive energy blast hole 5 is 10～35 times of hole cohesive energy blast hole 5 diameters.
(4) casting or compacting have the powder column 1 of V-shaped groove 2 respectively along axis direction at the diameter two ends, or dig out the powder column 1 that has V-shaped groove 2 respectively at the diameter two ends along axis direction, and in powder column 1, lay a low section detonator; Then powder column 1 is placed the cylinder 4 that has two V-arrangement cavity liners 3; Then powder charge cylinder 4 is placed hole cohesive energy blast hole 5, the V-shaped groove 2 of powder column 1 is in the through crack plane 6 that forms; Powder column 1 powder charge is TNT and hexogen; Hole cohesive energy blast hole 5 by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the main body Blasting Excavation district 7, and begin compartment laying short-delay blasting detonator than hole cohesive energy blast hole 5 Senior Two sections.
(6), and lay detonator than the 7 the highest sections Senior Two sections in main body Blasting Excavation district according to carrying out blast charging by the coefficient of coup 1.5～2.5 not in the type phototropic face blast hole of rock mass 10.
Linear charging density was 70～120g/m when wherein rock mass belonged to soft rock, during rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when rock mass belonged to hard rock.
(7) short-delay blasting hole, hole cohesive energy blast hole 5 and photoface exploision hole 10 in the main body Blasting Excavation district 7 are stopped up.
(8) connect blasting circuit, implement once detonation, carry out short-delay blasting, the low section detonator explosion at first of promptly laying in the hole cohesive energy blast hole 5, then the short-delay blasting hole compartment in the main body Blasting Excavation district 7 detonates, and detonate in last photoface exploision hole 10.
(9) slag tap.
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district 7, arrange the short-delay blasting hole.
(2) the peripheral profile line arranged light face blast hole 10 along the Blasting Excavation district.
Wherein: the diameter in photoface exploision hole 10 is 38～42mm.
(3) within Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole 5 of a side that light surface layer 8 leans on main body Blasting Excavation district 7; The thickness of reserving light surface layer 8 is: the distance between the plane that reservation rock mass wall 9 that Blasting Excavation district periphery will form and hole cohesive energy blast hole 5 axis constitute; Just and with the distance between the through crack plane 6 that forms, that is the minimum burden of photoface exploision.
Wherein: the pitch of holes in photoface exploision hole 10 is 0.6～0.9 times of reservation light surface layer 8 thickness, and reservation light surface layer 8 thickness are 10～20 times photoface exploision hole 10 diameters.
The diameter of hole cohesive energy blast hole 5 is identical with the diameter in photoface exploision hole 10, and the pitch of holes of hole cohesive energy blast hole 5 is 10～35 times of hole cohesive energy blast hole 5 diameters.
(4) casting or compacting have the powder column 1 of V-shaped groove 2 respectively along axis direction at the diameter two ends, or dig out the powder column 1 that has V-shaped groove 2 respectively at the diameter two ends along axis direction, and in powder column 1, lay a low section detonator; Then powder column 1 is placed the cylinder 4 that has two V-arrangement cavity liners 3; Then powder charge cylinder 4 is placed hole cohesive energy blast hole 5, the V-shaped groove 2 of powder column 1 is in the through crack plane 6 that forms; Powder column 1 powder charge is TNT and hexogen; Hole cohesive energy blast hole 5 by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the main body Blasting Excavation district 7, and begin compartment laying short-delay blasting detonator than hole cohesive energy blast hole 5 Senior Two sections.
(6), and lay detonator than the 7 the highest sections Senior Two sections in main body Blasting Excavation district according to carrying out blast charging by the coefficient of coup 1.5～2.5 not in the type phototropic face blast hole of rock mass 10.
Linear charging density was 70～120g/m when wherein rock mass belonged to soft rock, during rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when rock mass belonged to hard rock.
(7) short-delay blasting hole, hole cohesive energy blast hole 5 and photoface exploision hole 10 in the main body Blasting Excavation district 7 are stopped up.
(8) connect blasting circuit, play blast hole cohesive energy blast hole 5, the short-delay blasting hole in the main body of then the detonating Blasting Excavation district 7, the said photoface exploision hole 10 of detonating at last earlier.
(9) slag tap.
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
Claims (7)
1. explosion of hole cohesive energy and photoface exploision jointly control blasting procedure, may further comprise the steps:
(1) according to the short-delay blasting designing requirement Blasting Excavation zoning is decided the peripheral profile line, and in main body Blasting Excavation district (7), arrange the short-delay blasting hole;
(2) along said Blasting Excavation district's peripheral profile line arranged light face blast hole (10);
(3) within said Blasting Excavation district peripheral profile line, reserve the hole arranged cohesive energy blast hole of a side (5) that light surface layer (8) leans on said main body Blasting Excavation district (7); The thickness of said reservation light surface layer (8) is: the distance between the plane that reservation rock mass wall (9) that said Blasting Excavation district periphery will form and said hole cohesive energy blast hole (5) axis constitute; Just and with the distance between the through crack plane (6) that forms, that is the minimum burden of photoface exploision;
(4) casting or compacting have the powder column (1) of V-shaped groove (2) respectively along axis direction at the diameter two ends, or dig out the powder column (1) that has V-shaped groove (2) respectively at the diameter two ends along axis direction, and in said powder column (1), lay a low section detonator; Then said powder column (1) is placed said hole cohesive energy blast hole (5), the V-shaped groove (2) of said powder column (1) is in the said through crack plane (6) that forms; Said powder column (1) powder charge is a rock explosive; Said hole cohesive energy blast hole (5) by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging;
(5) according to the short-delay blasting designing requirement blast charging is carried out in the short-delay blasting hole in the said main body Blasting Excavation district (7), and begin compartment laying short-delay blasting detonator than said hole cohesive energy blast hole (5) Senior Two section;
(6) according to the type of rock mass blast charging is carried out by the coefficient of coup 1.5～2.5 not in said photoface exploision hole (10), and lay detonator than the highest section Senior Two section in said main body Blasting Excavation district (7); Linear charging density was 70～120g/m when wherein said rock mass belonged to soft rock, during said rock mass belongs to during hard rock linear charging density be 120～300g/m, linear charging density was 300g/m～350g/m when said rock mass belonged to hard rock;
(7) short-delay blasting hole, said hole cohesive energy blast hole (5) and said photoface exploision hole (10) in the said main body Blasting Excavation district (7) are stopped up;
(8) connect blasting circuit; Implement once detonation, carry out short-delay blasting, the low section detonator explosion at first of laying in the promptly said hole cohesive energy blast hole (5); The short-delay blasting hole compartment of following in the said main body Blasting Excavation district (7) detonates, and detonates in last said photoface exploision hole (10);
(9) slag tap;
(10) repeat above-mentioned steps (1)～(9), finish until excavation.
2. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure; It is characterized in that: the diameter in photoface exploision hole (10) is 38～42mm in the said step (2), and the pitch of holes in said photoface exploision hole (10) is 0.6～0.9 times of said reservation light surface layer (8) thickness.
3. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure, it is characterized in that: reservation light surface layer (8) thickness is 10～20 times said photoface exploision hole (10) diameter in the said step (2).
4. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure; It is characterized in that: the diameter of said step (3) mesopore cohesive energy blast hole (5) is identical with the diameter in said photoface exploision hole (10), and the pitch of holes of said hole cohesive energy blast hole (5) is 10～35 times of said hole cohesive energy blast hole (5) diameter.
5. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure; It is characterized in that: replace step (4) described in the claim 1 with following method: casting or compacting have the powder column (1) of V-shaped groove (2) respectively at the diameter two ends along axis direction; Or dig out the powder column (1) that has V-shaped groove (2) respectively at the diameter two ends, and in said powder column (1), lay a low section detonator along axis direction; Then in the V-shaped groove (2) of said powder column (1), embed cavity liner (3) respectively, form powder column (1) with two V-arrangement cavity liners (3); Then said powder column (1) is placed said hole cohesive energy blast hole (5), the V-shaped groove (2) of said powder column (1) is in the said through crack plane (6) that forms; Said powder column (1) powder charge is TNT and hexogen; Said hole cohesive energy blast hole (5) by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
6. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure; It is characterized in that: replace step (4) described in the claim 1 with following method: casting or compacting have the powder column (1) of V-shaped groove (2) respectively at the diameter two ends along axis direction; Or dig out the powder column (1) that has V-shaped groove (2) respectively at the diameter two ends, and in said powder column (1), lay a low section detonator along axis direction; Then said powder column (1) is placed the cylinder (4) that has two V-arrangement cavity liners (3); Then said powder charge cylinder (4) is placed said hole cohesive energy blast hole (5), the V-shaped groove (2) of said powder column (1) is in the said through crack plane (6) that forms; Said powder column (1) powder charge is TNT and hexogen; Said hole cohesive energy blast hole (5) by coefficient of decoupling charge be 1.5～2.5, linear charging density is that 100～330g/m carries out blast charging.
7. hole as claimed in claim 1 cohesive energy explosion and photoface exploision jointly control blasting procedure; It is characterized in that: replace step (8) described in the claim 1: connect blasting circuit with following method; Said hole cohesive energy blast hole (5) detonates earlier; Then detonate short-delay blasting hole in the said main body Blasting Excavation district (7), the said photoface exploision hole (10) of detonating at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110402381.2A CN102519322B (en) | 2011-12-06 | 2011-12-06 | Blasting method based on joint control of hole inside energy accumulation blasting and smooth blasting |
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Cited By (7)
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| CN103774653A (en) * | 2012-10-26 | 2014-05-07 | 兰州大学 | Linear shaped charge blasting grouting and anchoring tubular anchor bar |
| CN103774660A (en) * | 2012-10-26 | 2014-05-07 | 兰州大学 | Grouting anchoring tubular type anchor rod for circular shaped charge blasting hole |
| CN105627848A (en) * | 2016-03-22 | 2016-06-01 | 中煤科工集团淮北***技术研究院有限公司 | Locatable bilinear cumulative blasting device in smooth blasting hole and blasting method |
| CN105953662A (en) * | 2016-06-28 | 2016-09-21 | 宏大矿业有限公司 | Controllable bidirectional energy-gathering explosive column based on energy-gathering effect |
| CN109855500A (en) * | 2019-03-29 | 2019-06-07 | 中铁隧道局集团有限公司 | One kind being used for tunnel perimeter eye beehive-shaped charge blasting cartridge |
| CN113154977A (en) * | 2021-05-21 | 2021-07-23 | 核工业南京建设集团有限公司 | Bidirectional symmetrical kerf charging structure and method for smooth blasting |
| CN115523812A (en) * | 2022-10-08 | 2022-12-27 | 北部湾大学 | Energy-gathered charging structure capable of reducing tunnel disturbance and blasting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774653A (en) * | 2012-10-26 | 2014-05-07 | 兰州大学 | Linear shaped charge blasting grouting and anchoring tubular anchor bar |
| CN103774660A (en) * | 2012-10-26 | 2014-05-07 | 兰州大学 | Grouting anchoring tubular type anchor rod for circular shaped charge blasting hole |
| CN103774653B (en) * | 2012-10-26 | 2016-03-30 | 兰州大学 | Linear cavity energy explosion slip casting anchoring pipe anchor rod |
| CN105627848A (en) * | 2016-03-22 | 2016-06-01 | 中煤科工集团淮北***技术研究院有限公司 | Locatable bilinear cumulative blasting device in smooth blasting hole and blasting method |
| CN105953662A (en) * | 2016-06-28 | 2016-09-21 | 宏大矿业有限公司 | Controllable bidirectional energy-gathering explosive column based on energy-gathering effect |
| CN105953662B (en) * | 2016-06-28 | 2017-11-03 | 宏大矿业有限公司 | It is a kind of based on Mohaupt effect can steering bilateral cumulative energy explosive column |
| CN109855500A (en) * | 2019-03-29 | 2019-06-07 | 中铁隧道局集团有限公司 | One kind being used for tunnel perimeter eye beehive-shaped charge blasting cartridge |
| CN113154977A (en) * | 2021-05-21 | 2021-07-23 | 核工业南京建设集团有限公司 | Bidirectional symmetrical kerf charging structure and method for smooth blasting |
| CN115523812A (en) * | 2022-10-08 | 2022-12-27 | 北部湾大学 | Energy-gathered charging structure capable of reducing tunnel disturbance and blasting method |
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