CN205388443U - Light explodes downthehole bilinearity of fixing a position and gathers ability demolition unit - Google Patents
Light explodes downthehole bilinearity of fixing a position and gathers ability demolition unit Download PDFInfo
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- CN205388443U CN205388443U CN201620218841.4U CN201620218841U CN205388443U CN 205388443 U CN205388443 U CN 205388443U CN 201620218841 U CN201620218841 U CN 201620218841U CN 205388443 U CN205388443 U CN 205388443U
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Abstract
The utility model provides a light explodes downthehole bilinearity of fixing a position and gathers ability demolition unit, through set up push device can with the double -line type gather can the pencil propelling movement to light explode downtheholely to rotatable regulation double -line type gather can the pencil make the double -line type gather can the groove the central line explode hole center line and the coincidence of tunnel outline line with light, release is concentrated along the direction of tunnel outline line to the energy that explosion produced, forms the tunnel profile face that levels the rule after the blasting. Downthehole central positioner structure is improved, reduce its area of contact and bilinearity of exploding the hole with light and gather can the demolition unit phototropic downthehole propulsive resistance that explodes, realize gathering can demolition unit smooth dress hole operation, both satisfied the needs of production and design, can reduce explosion again and to the destruction of rock mass on every side, reduce rock drift support cost.
Description
Technical field
This utility model relates to Controlled blasting technique field, specifically can be illustrated as in a kind of light blast hole and can position bilinearity CUMULATIVE BLASTING device.
Background technology
Photoface exploision refers to by selecting properly blasting parameter and rational construction method, segmentation short-delay blasting, and after explosion, tunnel contour line meets and reaches designing requirement, a kind of Controlled blasting technique of the smooth rule of free face.
Traditional Smooth Blasting Construction method usually on the contour line of the quick-fried layer of light cloth one enclose intensive boring, adopting small medicine coil Uncoincided charge, detonating after snubber and periphery hole explosion, thus forming complete contoured surface after explosion.The most significant advantage is to efficiently control the blast action of periphery hole explosive, thus reducing the disturbance to country rock, keeps stablizing of country rock, give full play to the self-supporting of country rock, it is ensured that construction safety, simultaneously, can reduce again super, owe to dig, improve construction quality and efficiency, save cost.
Along with the requirement of blasting construction process progressively becomes more meticulous, traditional smooth Surface Blasting Technology is required also stricter.Chinese patent ZL2007100344945 discloses a kind of double focusing energy presplitting and smooth blasting method and special purpose device thereof, it is that the more piece binding energy tube standard knot that will be filled with on the tube wall of explosive the double, two V-arrangement troughs for collecting energy with symmetrical mounting is inserted in each big gun hole, each binding energy tube standard knot couples by coupling body, sheathed on binding energy tube standard knot make in each big gun hole in the centrage of each V-arrangement troughs for collecting energy of upper and lower Ge Jie binding energy tube standard knot hole on one face medium ring, in hole, medium ring is made up of centering body and the centering round platform being positioned at its waist, in the sheathed aperture, end, binding energy tube standard knot ground in blasting hole aperture to medium ring.It is to be solved technical problem is that, improves blasting energy utilization rate, strengthens presplitting effect, reduces pore-creating amount, little on retaining rock mass damage impact after explosion, improves the finishing property and stability that retain rock mass, and explosion face is more smooth.But due to the restriction of structure in this utility model, in practice of construction, above-mentioned technological means is infeasible.
First, in practice of construction, it is not smooth in big gun hole, and has kata-rocks in hole or there is collapse hole phenomenon, due to the construction features of centering round platform, make this structure there is bigger resistance, be difficult to advance in big gun hole, cannot be installed into even in big gun hole；Secondly, although this device be provided with in hole to medium ring and aperture to medium ring, but in practice of construction, to make double focusing energy groove center line form one in hole and between hole with the presplitting of required construction or photoface exploision in the face of the middle face overlapped, need this device is adjusted, but its structure also is inconvenient to adjust；Again, in hole, medium ring is arranged to split-type structural, adds its technology difficulty, improve its cost.
Utility model content
The purpose of this utility model there is provided in a kind of light blast hole can position bilinearity CUMULATIVE BLASTING device and blasting method, by controlling consumption and the charge constitution of explosive, utilize its bilinearity troughs for collecting energy cumulative action and can the advantage of guide-localization of positioner, the energy produced during explosive charge is enable to discharge in the direction set of tunnel contour line, thus forming the tunnel contoured surface of smooth rule after explosion.Both meet the needs producing and designing, the explosive charge destruction to surrounding rock body can be lowered again, reduce stone head support cost.
This utility model is set forth and is achieved by the following technical programs: can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole, including two-wire type cumulative pencil, center positioning device in hole, permitted electric detonator for coal mine, and it is filled in the permitted explosive for coal mine in two-wire type cumulative pencil；Described two-wire type cumulative pencil arranges more piece body, and tube wall is arranged with V-arrangement two-wire type troughs for collecting energy, and is connected by its head and the tail as connection member by center positioning device in hole；When bilinearity CUMULATIVE BLASTING device is installed in light blast hole, permitted electric detonator for coal mine is arranged on the external port of two-wire type cumulative pencil；Also include for two-wire type cumulative energy pencil is pushed in light blast hole, and rotatably regulate the pusher that two-wire type cumulative pencil makes the centrage of two-wire type troughs for collecting energy overlap with light blast hole centrage and tunnel contour line, described pusher includes push rod, it is located at the centralized positioning mark on push rod end face, it is located at the push rod other end and can with the pencil steady pin of two-wire type troughs for collecting energy matched in clearance, the pencil steady pin opposite sides near push rod one end is provided with detonator payment to a porter guard pin prominent in opposite directions, when pusher is connected with two-wire type cumulative pencil, the gap that can pass through permitted electric detonator for coal mine payment to a porter is left between end face and the outermost end body of two-wire type cumulative pencil of push rod.
In described hole, center positioning device includes body, and is fixed on the aligning parts of set external body；The inwall of described body is provided with the V-arrangement body steady pin adaptive with described two-wire type troughs for collecting energy；Described aligning parts is distributed in the middle part of body is formed by the radioactive circumference of the tooth that at least three size is identical, leaves gap, aligning parts and light blast hole matched in clearance between adjacent teeth.
The outer rim of described aligning parts is set to arc.
Different diameters 2 ~ the 4mm of described aligning parts and light blast hole.
The cross section of described pencil steady pin is V-arrangement, suitable with the shape of two-wire type troughs for collecting energy.
Described centralized positioning is masked as the unidirectional pointer corresponding with the locality of one of them pencil steady pin；Or the bidirectional pointer corresponding with two pencil steady pin directions.
The cross section of the body of described two-wire type cumulative pencil is oval or circular.
In described pusher, two-wire type cumulative pencil and hole, center positioning device adopts the pvc material with anti-flammability to be made.
Bilinearity CUMULATIVE BLASTING method can be positioned in a kind of light blast hole, will be filled with center positioning device head and the tail in the two-wire type cumulative pencil hole of permitted explosive for coal mine and connect；In hole, the body of center positioning device is connected with the two-wire type troughs for collecting energy of two-wire type cumulative pencil by its internal V-arrangement body steady pin；Permitted electric detonator for coal mine is embedded in the permitted explosive for coal mine in two-wire cumulative pencil；The pencil steady pin of pusher inserts in the two-wire type troughs for collecting energy of two-wire type cumulative pencil; detonator payment to a porter guard pin makes to leave gap between the end face of push rod and the port of two-wire type cumulative pencil; detonator payment to a porter is passed from this gap, it is prevented that rotate payment to a porter abrasion during push rod；With pusher, two-wire type cumulative pencil is pushed in light blast hole, the aligning parts of set external body makes two-wire type cumulative pencil and light blast hole axis coinciding, aligning parts is dentalation, reduces its contact area with light blast hole and resistance that bilinearity CUMULATIVE BLASTING device advances in light blast hole；Being masked as reference with the centralized positioning of pusher end face, rotate push rod and make two-wire type troughs for collecting energy overlap with tunnel contour line, the energy that explosive charge produces discharges in the direction set of tunnel contour line, forms the tunnel contoured surface of smooth rule after explosion.
Can positioning bilinearity CUMULATIVE BLASTING method in a kind of light blast hole, its Specific construction step is:
Paint the contour line and centrage of meeting head on to sketch out tunnel respectively in tunnel at tunnel-surrounding before step 1) explosion；
Step 2) after the Cut Blasting of tunnel, retain the quick-fried layer of certain thickness light, the thickness of the quick-fried layer of light and the blasting parameter of photoface exploision are determined according to the type of rock to be blasted, wherein, blasting parameter includes the unit consumption of photoface exploision, the quantity of light blast hole, single hole explosive payload, loaded length, stemming length and diameter；
Step 3) is according to step 2) loaded length of light blast hole single hole, stemming length and the diameter determined, light blast hole of constructing on the quick-fried layer of light；
Step 4) determines the body quantity of selected two-wire type cumulative pencil according to light blast hole loaded length and stemming length, permitted explosive for coal mine is filled in each joint two-wire type cumulative pencil, with center positioning device in hole, each pipe joint body head and the tail are connected, and permitted electric detonator for coal mine and pusher are installed in the outer end of two-wire type cumulative pencil；
Step 5) uses pusher that the two-wire type CUMULATIVE BLASTING device assembled is pushed to position gently predetermined in hole, and rotate push rod, the centrage guaranteeing two-wire type troughs for collecting energy overlaps with the tunnel contour line delineated in step 1), then pusher is outwards extracted gently out along light blast hole, thus completing the charging work of single hole；
All the other each smooth blast holes of step 6) all carry out charging operation according to step 5)；
After step 7) treats powder charge, hole-specifically fill in the water stemming that 2 volumes process, then fill up whole smooth blast hole with common clay stemming；
The detonator payment to a porter of permitted electric detonator for coal mine is connected and is connected in bus and carries out explosion by step 8).
This utility model provides and can position bilinearity CUMULATIVE BLASTING device and effect that blasting method reaches in tunnelling process is as follows:
By on-the-spot test of the present utility model, can position bilinearity CUMULATIVE BLASTING device and blasting method has bigger technical advantage than traditional smooth Surface Blasting Technology in the molding of tunnel profile and the protection of country rock in tunnelling process.
Bilinearity CUMULATIVE BLASTING device can be positioned and can ensure the relatively stringent powder charge not degree of coupling by rational charge constitution, guarantee that the center of cumulative pencil is relative with the centrage of light blast hole to overlap, it is determined by explosive specific charge and rational blasting parameter, ensure charge constitution belongs to seriality charge constitution, so that the integrated degree of Half cast factor after explosion and contoured surface is all greatly increased.
The propelling movement of the hole outside fix pusher of bilinearity CUMULATIVE BLASTING device can be positioned may insure that with location two-wire type troughs for collecting energy is relative with the contour line in tunnel and overlap, the tunnel overall size being explosive forming is relative with design size identical, what increase owing to the tunnel overall size of explosive forming differs relatively big with design size after eliminating conventional common photoface exploision repaiies slope operation, save the expense of tunnelling, accelerate the speed of tunnelling simultaneously.
Bilinearity CUMULATIVE BLASTING device and blasting method can be positioned owing to carrying out punching explosion after the Cut Blasting of tunnel, there is the bigger scope of freedom needed for explosion, reduce the clamping action of rock, dose decreases relative to common photoface exploision, after guaranteeing explosion, the destruction of country rock can be reduced to minimum level, reduce the concussion of blasting impact on roadway facility around simultaneously, save the cost of roadway support.
Accompanying drawing explanation
Fig. 1 is this utility model example structure schematic diagram；
Fig. 2 is the Fig. 1 profile along A-A face；
Fig. 3 is the Fig. 2 profile along B-B face；
Fig. 4 is the Fig. 3 profile along C-C face；
Fig. 5 is the Fig. 3 profile along D-D face；
Fig. 6 is the Fig. 3 profile along E-E face；
Fig. 7 is the Fig. 3 profile along F-F face；
Fig. 8 is schematic three dimensional views of the present utility model；
In figure, 1. pusher, 11. centralized positioning marks, 12. pencil steady pins, 13. push rod, 14. detonator payment to a porter guard pins；2. two-wire type cumulative pencil, 21. two-wire type troughs for collecting energy, 22. bodys, 3. center positioning device in hole, 31. bodies, 32. body steady pins, 33. aligning partses, 4. permitted electric detonator for coal mine, 5. smooth blast hole.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-8 and embodiment, the utility model is described in further detail.
In the accompanying drawings, can positioning bilinearity CUMULATIVE BLASTING device in a kind of light blast hole, including two-wire type cumulative pencil 2, in hole center positioning device 3, permitted electric detonator for coal mine 4, and are filled in the permitted explosive for coal mine in two-wire type cumulative pencil 2；Described two-wire type cumulative pencil 2 arranges more piece body 22, and body 22 outer wall is arranged with V-arrangement two-wire type troughs for collecting energy 21, and is connected by its head and the tail as connection member by center positioning device in hole 3；When bilinearity CUMULATIVE BLASTING device is installed in light blast hole 5, permitted electric detonator for coal mine 4 is arranged on the external port of two-wire type cumulative pencil 2；It is characterized in that, also include for two-wire type cumulative energy pencil 2 is pushed in light blast hole 5, and rotatably regulate the pusher 1 that two-wire type cumulative pencil 2 makes the centrage of two-wire type troughs for collecting energy 21 overlap with light blast hole 5 centrage and tunnel contour line, described pusher 1 includes push rod 13, it is located at the centralized positioning mark 11 on push rod 13 end face, it is located at push rod 13 other end and can with the pencil steady pin 12 of two-wire type troughs for collecting energy 21 matched in clearance, the pencil steady pin 12 opposite sides near push rod 13 one end is provided with detonator payment to a porter guard pin 14 prominent in opposite directions, when pusher 1 is connected with two-wire type cumulative pencil 2, the gap that can pass through permitted electric detonator for coal mine 4 payment to a porter is left between end face and the outermost end body 22 of two-wire type cumulative pencil 2 of push rod 13.
Described detonator payment to a porter guard pin 14 is strip.
In described hole, center positioning device 3 includes body 31, and is fixed on the aligning parts 33 outside body 31；The inwall of described body 31 is provided with and the V-arrangement body steady pin 32 of described two-wire type troughs for collecting energy 21 adaptation；Described aligning parts 33 is distributed in the middle part of body 31 by the radioactive circumference of the tooth that at least three size is identical and forms, and leaves gap, aligning parts 33 and light blast hole 5 matched in clearance between adjacent teeth.
The outer rim of described aligning parts 33 is set to arc.
Different diameters 2 ~ the 4mm of described aligning parts 33 and light blast hole 5.
The cross section of described pencil steady pin 12 is V-arrangement, suitable with the shape of two-wire type troughs for collecting energy 21.
Described centralized positioning mark 11 is the unidirectional pointer corresponding with the locality of one of them pencil steady pin 12；Or the bidirectional pointer corresponding with two pencil steady pin 12 directions.
The cross section of the body 22 of described two-wire type cumulative pencil 2 is oval or circular.
In described pusher 1, two-wire type cumulative pencil 2 and hole, center positioning device 3 adopts the pvc material with anti-flammability, processes by mold injection according to dimensional requirement.
Bilinearity CUMULATIVE BLASTING method can be positioned in a kind of light blast hole, will be filled with the two-wire type cumulative pencil 2 of permitted explosive for coal mine center positioning device 3 head and the tail in hole and connect；In hole, the body 31 of center positioning device 3 is connected with the two-wire type troughs for collecting energy 21 of two-wire type cumulative pencil 2 by its internal V-arrangement body steady pin 32；Permitted electric detonator for coal mine 4 is embedded in the permitted explosive for coal mine in two-wire cumulative pencil 2；The pencil steady pin 12 of pusher 1 inserts in the two-wire type troughs for collecting energy 21 of two-wire type cumulative pencil 2; detonator payment to a porter guard pin 14 makes to leave gap between the end face of push rod 13 and the port of two-wire type cumulative pencil 2; detonator payment to a porter is passed from this gap, it is prevented that rotate payment to a porter abrasion during push rod 13；With pusher 1, two-wire type cumulative pencil 2 is pushed in light blast hole 5, aligning parts 33 outside body 31 makes two-wire type cumulative pencil 2 and light blast hole 5 axis coinciding, aligning parts 33 is dentalation, reduces its contact area with light blast hole 5 and resistance that bilinearity CUMULATIVE BLASTING device advances in light blast hole 5；With the centralized positioning mark 11 of pusher 1 end face for reference, rotating push rod 13 makes two-wire type troughs for collecting energy 21 overlap with tunnel contour line, the energy that explosive charge produces discharges in the direction set of tunnel contour line, forms the tunnel contoured surface of smooth rule after explosion.
Can positioning bilinearity CUMULATIVE BLASTING method in a kind of light blast hole, its Specific construction step is:
Paint the contour line and centrage of meeting head on to sketch out tunnel respectively in tunnel at tunnel-surrounding before step 1) explosion；
Step 2) after the Cut Blasting of tunnel, retain the quick-fried layer of certain thickness light, the thickness of the quick-fried layer of light and the blasting parameter of photoface exploision are determined according to the type of rock to be blasted, wherein, blasting parameter includes the unit consumption of photoface exploision, the quantity of light blast hole, single hole explosive payload, loaded length, stemming length and diameter；
Step 3) is according to step 2) loaded length of light blast hole 5 single hole, stemming length and the diameter determined, light blast hole of constructing on the quick-fried layer of light；
Step 4) determines body 22 quantity of selected two-wire type cumulative pencil 2 according to light blast hole 5 loaded length and stemming length, permitted explosive for coal mine is filled in each joint two-wire type cumulative pencil 2, with center positioning device in hole 3, each pipe joint body 22 head and the tail are connected, and permitted electric detonator for coal mine 4 and pusher 1 are installed in the outer end of two-wire type cumulative pencil 2；
Step 5) uses pusher 1 that the two-wire type CUMULATIVE BLASTING device assembled is pushed to position gently predetermined in hole, and rotate push rod 13, the centrage guaranteeing two-wire type troughs for collecting energy 21 overlaps with the tunnel contour line delineated in step 1), then pusher 1 is outwards extracted gently out along light blast hole 5, thus completing the charging work of single hole；
All the other each smooth blast holes 5 of step 6) all carry out charging operation according to step 5)；
After step 7) treats powder charge, hole-specifically fill in the water stemming that 2 volumes process, then fill up whole smooth blast hole 5 with common clay stemming；
The detonator payment to a porter of permitted electric detonator for coal mine 5 is connected and is connected in bus and carries out explosion by step 8).
The dimensional requirement of bilinearity CUMULATIVE BLASTING device can be positioned: determine according to blasthole diameter and explosive specific charge, but should ensure that the steady detonation of explosive and ensure the rational stem length of blast working safety, wherein the diameter of cumulative pencil should be not less than the cut off diameter of explosive detonation.The length of cumulative pencil is determined according to blast hole projectile filling length, it is ensured that blast hole projectile filling length is the integral multiple of two-wire type cumulative pencil 2 length.Between pencil steady pin 12 and two-wire type troughs for collecting energy 21, in two-wire type troughs for collecting energy 21 and hole, between center positioning device 3, should ensure that the vacant amount of certain size (2-4mm).Wherein should ensure that between pencil steady pin 12 with two-wire type troughs for collecting energy 21 and be connected relative close between the two, the cumulative direction of two-wire type troughs for collecting energy 21 can be controlled by rotating push rod 13, after should ensure that two-wire type cumulative pencil 2 is pushed to charge positions, hole outside fix pusher 1 can easily extract and not interfere with the position that two-wire type cumulative pencil 2 has been fixed out simultaneously.Should ensure that between center positioning device 3 in two-wire type troughs for collecting energy 21 and hole and be completely embedded between the two, make the two-wire type troughs for collecting energy 21 can completely and fit tightly between center positioning device 3 in hole, two-wire type troughs for collecting energy 21 is securely fixed by center positioning device in hole 3 simultaneously, and difficult drop-off.
The structural requirement of bilinearity CUMULATIVE BLASTING device can be positioned: hole outside fix pusher 1 structurally should match with two-wire type cumulative pencil 2, two-wire type cumulative pencil 2 structurally should match with center positioning device in hole 3, in hole, center positioning device 3 structurally should match in the wall of a borehole diameter, and whole device can be pushed to the precalculated position of boring smoothly and can't slide easily after connecting.In hole, the pencil steady pin 12 on center positioning device 3 should retain certain size surplus with the wall of a borehole, it is prevented that the interior a small amount of rock dust of boring and pencil steady pin 12 bonding form the bigger frictional resistance whole device of obstruction and reach boring precalculated position.
The requirement of the rapidoprint of bilinearity CUMULATIVE BLASTING device can be positioned: the material respectively grinding tool high-temperature injection material of bilinearity CUMULATIVE BLASTING device use, permitted explosive for coal mine, permitted electric detonator for coal mine can be positioned.Wherein injected plastics material should strictly use fire-retardant pvc material, ensure that the body of processing has anti-flammability, simultaneously after explosive charge the vaporized product of body without or few containing harmful gas componant, guarantee namely can use safely under the inferior complex environment of coal mine, the requirement of underground coal mine occupational health environment can be met again.The explosive used in body is necessary for qualified and that explosion property the is good permitted explosive for coal mine that dispatches from the factory, it is possible in the work surface security implementation explosion having gas and dust explosion danger.The electric cap that detonating charge uses is necessary for the permitted electric detonator for coal mine qualified, functional, that the detonator delay time is less than 130ms that dispatches from the factory.
The execution conditions that can position bilinearity CUMULATIVE BLASTING device require: can position bilinearity CUMULATIVE BLASTING device and be mainly used in tunnelling process in the process of photoface exploision, require that light blast hole must be the circle of rule, and light blast hole must be put down, directly, together, accurate, in hole, rock dust need to wash away totally by pressure wind (water) in advance, it is ensured that can position bilinearity CUMULATIVE BLASTING device and can be pushed to precalculated position smoothly.
Determine blasting parameter: the geologic information met head on according to tunnel determines the diameter of the thickness of the quick-fried layer of the unit consumption of photoface exploision, light, the quantity of light blast hole, the single hole explosive payload of light blast hole, the loaded length of light blast hole, the stemming length of light blast hole, light blast hole, then meets head in tunnel to use air drill wet boring.
Determine the size that can position bilinearity CUMULATIVE BLASTING device: the size according to blasting parameters determination this device various piece, and process the mould of corresponding size.
Utilize mould processing can position bilinearity CUMULATIVE BLASTING device: to utilize the mould processed, fire-retardant pvc material is used to process, by the mode of mould high-temperature injection, all parts that some meets positioned for the bilinearity CUMULATIVE BLASTING device of user demand, and the parts processed are loaded carton, it is prevented that it is crushed out of shape in the process of transport.
Processing Concentrated charge: provided chamber by fireman at underground coal mine explosive before implementing explosion and qualified and in the safe shelf-life the permitted explosive for coal mine that dispatches from the factory got is poured in the cumulative pencil processed respectively, powder charge must be uniformly, can not there is caking phenomenon, degree of packing controls at about 0.9g/cm3, Concentrated charge two ends have been crossed with the wrapping paper of explosive, it is prevented that explosive is always trickled down in the process transporting work surface to after filling pencil.For the ease of powder charge, it is desirable to the permitted explosive for coal mine of selection is necessary for and meets the corresponding Coal-mining Permissible Explosive of Expanded Ammonium Nitrate of tunnelling safe class.If driving face is low gaseous mine, rock out work surface should adopt the Coal-mining Permissible Explosive of Expanded Ammonium Nitrate being not less than two grades；If the driving face that driving face is highly gassy mine, kerosene symbiosis mine, coal and coal bed gas projecting mine, the Coal-mining Permissible Explosive of Expanded Ammonium Nitrate of three grades should be adopted.
Assembling can position bilinearity CUMULATIVE BLASTING device: fits together positioning each several part of the bilinearity CUMULATIVE BLASTING device structure shown in Fig. 1, now should be noted not by permitted electric detonator for coal mine insertion apparatus, whole construction hole to be drilled is complete, and in boring, rock dust can implement powder charge in hole after all rinsing well.
Powder charge: the permitted electric detonator for coal mine that payment to a porter has been twisted together into short circuit inserts the device assembled; subsequently the pencil steady pin 12 on hole outside fix pusher 1 is stuck on the two-wire type troughs for collecting energy 21 of two-wire type cumulative pencil 2; steady pin 12 is the optimal location that steady pin 12 is connected with two-wire type troughs for collecting energy 21 when being stopped by detonator payment to a porter guard pin 14; then hole outside fix pusher 1 is pushed gently; until at the bottom of device reaches hole time; rotate push rod 13 gently, make the centrage of two-wire type troughs for collecting energy 21 can overlap with tunnel contour line.Then pull-out-hole outside fix pusher 1 completes the charging work of single hole gently.Whole charging work is characterized by gently that insertion apparatus is at the bottom of hole, and the centrage rotating push rod 13 to two-wire type troughs for collecting energy 21 gently can overlap with tunnel contour line, and extraction push rod 13 ensures that detonator payment to a porter is not pullled gently.
Tamping: after treating all blast hole projectile fillings, hole-specifically fills in the water stemming that 2 volumes process, and pushes water stemming material with tamper gently and contacts in explosive, then fills up whole smooth blast hole with common clay stemming, and the stemming length of whole smooth blast hole is no less than 50cm.
Line detonates: the detonator payment to a porter of light blast hole is connected and connects in bus, fireman sends alarm and removes people, " big gun three is examined " and " three people's link systems " is adopted to carry out explosion, detonate after 30min and borehole dispels rear fireman and enters and meet head on to carry out safety inspection, check for blind big gun, back has the boulder of non-loosening, sends signal of sounding all clear after guaranteeing safety, records explosion drilling depth, calculating blast hole utilization factor and Half cast factor, the reasonability summing up blasting parameter instructs subsequent cycle blasting work.
Naming case history this utility model is further described: the geologic information of certain mine-800m main haulage roadway driving shows, rock is moderate stable hard limestone, Protodyakonov coefficient f=5-7, tunnel design explosion section is 11.5m3.nullDetermine that according to on-the-spot on-the-spot investigation the blasting parameter of this tunnel enforcement photoface exploision is as follows: unit consumption 1.5kg/m3、Blast hole depth 1.8m,The quick-fried layer thickness 500mm of light，Pitch-row 450mm,Hole count 19，Single hole explosive payload 570g,Device internal diameter (charge diameter) 25mm,Two-wire type cumulative pencil 2 internal-and external diameter respectively 25mm、26mm，Centralized positioning mark 11 internal-and external diameter respectively 26.5mm、27.5mm，Body steady pin 31 outside dimension is 40mm,Hole outside fix pusher 1 is 1.2m，Pencil steady pin 12 length is 15cm,Use two grades of Coal-mining Permissible Explosive of Expanded Ammonium Nitrates as medicated core，Use permitted electric detonator for coal mine ms-2、ms-3、Ms-4 is as detonating capsule，Adopt the mode of serial ignition. after explosion，Wall is smooth，Country rock is not affected by destroying，Tunnel contour line size and designing requirement are completely in the scope that design error requires，Global blowup effect is ideal.
Claims (8)
1. can position a bilinearity CUMULATIVE BLASTING device in light blast hole, including two-wire type cumulative pencil, center positioning device in hole, permitted electric detonator for coal mine, and be filled in the permitted explosive for coal mine in two-wire type cumulative pencil；Described two-wire type cumulative pencil arranges more piece body, and tube wall is arranged with V-arrangement two-wire type troughs for collecting energy, and is connected by its head and the tail as connection member by center positioning device in hole；When bilinearity CUMULATIVE BLASTING device is installed in light blast hole, permitted electric detonator for coal mine is arranged on the external port of two-wire type cumulative pencil；It is characterized in that, also include for two-wire type cumulative energy pencil is pushed in light blast hole, and rotatably regulate the pusher that two-wire type cumulative pencil makes the centrage of two-wire type troughs for collecting energy overlap with light blast hole centrage and tunnel contour line, described pusher includes push rod, it is located at the centralized positioning mark on push rod end face, it is located at the push rod other end and can with the pencil steady pin of two-wire type troughs for collecting energy matched in clearance, the pencil steady pin opposite sides near push rod one end is provided with detonator payment to a porter guard pin prominent in opposite directions, when pusher is connected with two-wire type cumulative pencil, the gap that can pass through permitted electric detonator for coal mine payment to a porter is left between end face and the outermost end body of two-wire type cumulative pencil of push rod.
2. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 1, it is characterised in that in described hole, center positioning device includes body, and is fixed on the aligning parts of set external body；The inwall of described body is provided with the V-arrangement body steady pin adaptive with described two-wire type troughs for collecting energy；Described aligning parts is distributed in the middle part of body is formed by the radioactive circumference of the tooth that at least three size is identical, leaves gap, aligning parts and light blast hole matched in clearance between adjacent teeth.
3. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 2, it is characterised in that the outer rim of described aligning parts is set to arc.
4. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 2, it is characterised in that the different diameters 2 ~ 4mm of described aligning parts and light blast hole.
5. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 1, it is characterised in that the cross section of described pencil steady pin is V-arrangement, suitable with the shape of two-wire type troughs for collecting energy.
6. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 1, it is characterised in that described centralized positioning is masked as the unidirectional pointer corresponding with the locality of one of them pencil steady pin；Or the bidirectional pointer corresponding with two pencil steady pin directions.
7. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 1, it is characterised in that the cross section of the body of described two-wire type cumulative pencil is oval or circular.
8. can position bilinearity CUMULATIVE BLASTING device in a kind of light blast hole according to claim 1, it is characterised in that in described pusher, two-wire type cumulative pencil and hole, center positioning device adopts the pvc material with anti-flammability to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620218841.4U CN205388443U (en) | 2016-03-22 | 2016-03-22 | Light explodes downthehole bilinearity of fixing a position and gathers ability demolition unit |
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| CN105627848A (en) * | 2016-03-22 | 2016-06-01 | 中煤科工集团淮北爆破技术研究院有限公司 | Locatable bilinear cumulative blasting device in smooth blasting hole and blasting method |
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| CN110243861A (en) * | 2019-02-19 | 2019-09-17 | 中煤科工集团淮北爆破技术研究院有限公司 | Toxic gas explosion case test device and its test method |
| CN110243861B (en) * | 2019-02-19 | 2022-02-25 | 中煤科工集团淮北爆破技术研究院有限公司 | Testing method of toxic gas explosion box testing device |
| CN110986713A (en) * | 2020-01-02 | 2020-04-10 | 中国矿业大学(北京) | Large-diameter ultra-deep hole radiation energy accumulation loosening pre-splitting blasting device and filling method |
| CN110986713B (en) * | 2020-01-02 | 2021-06-18 | 中国矿业大学(北京) | Large-diameter ultra-deep hole radiation energy accumulation loosening pre-splitting blasting device and filling method |
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