CN102927864B - Device and method for performing blasting processing for ore-pass high position blockage by balloon suspended explosive powders - Google Patents
Device and method for performing blasting processing for ore-pass high position blockage by balloon suspended explosive powders Download PDFInfo
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Abstract
The invention provides a device and a method for performing blasting processing for ore-pass high position blockage by balloon suspended explosive powders. The device comprises an explosive powder combination body, a positioning pulley mechanism, a draw rope and a cantilever component, wherein the explosive powder combination body is formed a balloon, the explosive powders and a nonel tube, buoyancy and tension stress directions and gravity stress direction of the explosive powder combination body are on a same plumb line, and the cantilever component is arranged above the explosive powder combination body and can be close to or away from the explosive powder combination body. The method includes that during installing, the buoyancy and tension stress directions and gravity stress direction of the explosive powder combination body are controlled to be on the same plumb line; and in the process of floating upwards of the balloon, the balloon which stops at the borehole wall collapse position is horizontally displaced and corrected, and thereby the buoyancy and tension stress directions and gravity stress direction of the explosive powder combination body are controlled to be on the same plumb line. The device and the method for performing blasting processing for ore-pass high position blockage by the balloon suspended explosive powders have the advantages that the blasting dredge effect is good, the energy of the explosive powders can be exerted to the hilt, a balloon body can be effectively prevented from being abraded, the construction is convenient, and the like.
Description
Technical field
The present invention relates to the high-order technical field of stopping up of explosion treatment drop shaft, more particularly, relate to a kind of balloon suspension explosive that adopts to the high-order apparatus and method of carrying out explosion treatment of stopping up of drop shaft.
Background technology
Effective processing after drop shaft stops up is the problem that Mine Safety in Production can not be ignored, and at present, in production practices, adoptable processing pass blocking blocking method has several as follows:
(1) the big gun facture of shaking.Big gun shakes to process three kinds of methods conventionally: 1. in the boxhole of bottom, big gun shakes; 2. in checking tunnel, interdrive, big gun shakes; 3. at top drop shaft mouth big gun, shake; All by blasting vibration, destroy the balance of suspended arch.
(2) drop shaft water flood.Utilize the characteristic that prose style free from parallelism water content increases, adhesion reduces, in well, fill with the appropriate water soaking of people, make to stop up material and be caving, reach and process the object of stopping up.The construction of this method is simple, be applicable to tamper lumpiness little, containing powder, situation that mud is larger, in the process of pouring water, to strengthen the safety monitoring of drop shaft bottom discharging mouth.During processing, needing cautiously, has the danger of running ore deposit; If while not being caving with this method processing putty, residual the dripping after pouring water easily makes ore drop, and gives and processes and increased difficulty by other method.
(3) hydrogen balloon hangs cartridge bag blasting procedure.The ability of utilizing hydrogen balloon to rise, brings to obstruction place by cartridge bag rising and carries out explosion treatment obstruction, and general processing is highly 15～60m.But because explosive is bundled in the below of balloon, and explosive charge is seldom, after blast, ignite balloon, the power of explosive can not all be applied to arch springing, not too obvious to the effect of suspended arch destruction.
(4) under, dig method.If opencut, obstruction place is nearer apart from drop shaft mouth, can implement the drop shaft section of falling to stopping up the method for reason everywhere.
(5) perforated blasting method.If blocking position is apart from drop shaft mouth near (within 60m), and blocking position is clear and definite, adopt geology to bore around the vertical borehole wall boring of well head, hole depth is to blocking position place, then carry out charge explosion, make block part together with the borehole wall slump simultaneously dredge blockage of obstruction place.
(6) mine rocket projectile facture.The airflow effect that utilizes launching tube implode thing blast to produce, makes rocket projectile lift-off automatically ignite with block part apparatus to cause bursting, make block part be subject to strong blast impulse or vibration and fall, thereby dredging drop shaft stops up.Since 20 century 70s, the domestic special processing that mine rocket projectile carries out drop shaft obstruction of having developed, has obtained good effect.According to well, test outward, the mine rocket projectile LSK-3 type of at present wide range can be delivered to 4kg explosive 340m height, but the altitude record that the interior success of well is at present used only has 80m left and right.
Yet above the whole bag of tricks, stops up in a high position of processing advanced pass, all have the problem of applicable elements deficiency, and pass plugging handling danger is high, at present domestic there is no dredged large-scale with hydrogen balloon suspension explosive blasting, the high-order example stopping up of speciality type drop shaft, to drop shaft is high-order, stop up, certain factory adopts traditional hydrogen balloon suspension explosive blasting facture to process, discovery cannot dredge blockage, and cause drop shaft to stop using, this be because: hydrogen balloon suspension explosive blasting is at drop shaft, to see the sight look into gallery to look into mouthful place's construction, be positioned at side and the narrow field of pass, the center of gravity of hydrogen balloon stay cord direction of pull and hydrogen balloon and explosive combination in hydrogen balloon uphill process is not on same plumb line, make hydrogen balloon be subject to the effect of stay cord horizontal component.Hydrogen balloon can normally float along the borehole wall in pit shaft bottom, when rising to while collapsing space, be subject to drip in drop shaft, under the effect of stay cord horizontal component, hydrogen balloon occurred level direction moves, finally rest on the space of collapsing, cannot continue to rise to block part along top, the space pit shaft that collapses, explosive also just cannot contact with plugging block, cannot reach explosion dredging effect.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and provide a kind of balloon of the explosive that makes to suspend can be smoothly by collapse space rise to block part of drop shaft, reach the device and method of explosion dredging drop shaft.
To achieve these goals, one aspect of the present invention provides a kind of balloon suspension explosive blasting to process the high-order device stopping up of drop shaft, and described device comprises explosive combination, positioning pulley mechanism, stay cord and overhanging component; Wherein, positioning pulley mechanism is arranged on the below of explosive combination, and one end of stay cord is connected with explosive combination bottom by positioning pulley mechanism and the other end is free control end; Explosive combination consists of balloon, explosive and detonator, explosive is fixed on balloon top, one end of detonator is connected and the other end is free control end at balloon surface and with the detonator in being embedded in explosive by positioning pulley arrangement of mechanism, and the gravity of described explosive combination is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line; Overhanging component be arranged on explosive combination top and can near or away from explosive combination, described overhanging component comprises the bar of encorbelmenting, leading block and lifting rope, leading block is fixed on one end of close explosive combination of the bar of encorbelmenting, and one end of lifting rope is connected with explosive combination top by leading block and the other end is free control end.
According to balloon suspension explosive blasting of the present invention, process an embodiment of the high-order device stopping up of drop shaft, described overhanging component can also comprise the support unit that is arranged on drop shaft observation panel place, described support unit comprises the support being fixed on drop shaft observation panel, and be fixed on the support roller on support, the race diameter of support roller with described in the encorbelment diameter of bar mate so that the bar of encorbelmenting can move on race so near or away from explosive combination.
An embodiment who processes the high-order device stopping up of drop shaft according to balloon suspension explosive blasting of the present invention, described device can also comprise the explosive support member that is fixed on described balloon top center, the preferred lightweight carbon element of this explosive support member burr.
An embodiment who processes the high-order device stopping up of drop shaft according to balloon suspension explosive blasting of the present invention, is provided with anticreep baffle plate on described positioning pulley mechanism and/or described leading block.
Another aspect of the present invention provides a kind of balloon suspension explosive blasting to process the high-order method of stopping up of drop shaft, comprise the following steps of carrying out successively: the position of collapsing of measuring drop shaft, and obtain the collapse the highest and lowest elevation at position and the elevation of the block part on the top, position of collapsing; Balloon suspension explosive blasting as above is processed to the high-order device stopping up of drop shaft and be arranged in drop shaft, and in installation process, guarantee that the gravity of explosive combination is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line; By the extremely default pressure of balloon inflation; After having inflated, the mobile bar of encorbelmenting, to the position away from body of explosive, is cut off lifting rope, and is discharged the free control end of stay cord and detonator, so that explosive combination freely floats up to the position of collapsing; To stopping at the horizontal displacement of the explosive combination at the position of collapsing, revise, to control the gravity of explosive combination, be subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line; Again discharge the free control end of stay cord and detonator, make explosive combination floating also finally rise to the block part on the top, position of collapsing by the position of collapsing; Carry out explosion treatment.
An embodiment who processes the high-order method of stopping up of drop shaft according to balloon suspension explosive blasting of the present invention, the gravity that can control described explosive combination is 2/5 of balloon buoyancy, the pulling force of stay cord is 3/5 of balloon buoyancy.
Compared with prior art, the beneficial effect that the present invention has comprises that explosion dredging is effective, and brings into play to greatest extent the energy of explosive; During construction, balloon spheroid is completely unsettled, is subject to stay cord and lifting rope acting in conjunction, galls balloon spheroid while effectively avoiding constructing; Balloon inflation is convenient, constructability.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the high-order device stopping up of balloon suspension explosive blasting processing drop shaft according to an exemplary embodiment of the present invention.
Fig. 2 A shows the front view of sockets for collecting energy explosive according to an exemplary embodiment of the present invention.
Fig. 2 B shows the top view of sockets for collecting energy explosive according to an exemplary embodiment of the present invention.
10-explosive combination, 11-explosive, 12-balloon, 13-detonator, 20-positioning pulley mechanism, 21-positioning pulley, 22-steel plate, 23-steel pipe, 30-stay cord, 40-overhanging component, 41-encorbelment bar, 42-leading block, 43-lifting rope, 50-explosive support member, 61-support, 62-support roller, the 70-drop shaft borehole wall.
The specific embodiment
Describe in detail according to balloon suspension explosive blasting of the present invention and process the high-order device and method stopping up of drop shaft with exemplary embodiment below with reference to accompanying drawings.
Fig. 1 is the schematic diagram of the device that a balloon suspension explosive blasting processing drop shaft high position is stopped up according to an exemplary embodiment of the present invention, Fig. 2 A shows the front view of sockets for collecting energy explosive according to an exemplary embodiment of the present invention, and Fig. 2 B shows the top view of sockets for collecting energy explosive according to an exemplary embodiment of the present invention.As shown in Figure 1, the high-order device stopping up of the balloon suspension explosive blasting of this exemplary embodiment processing drop shaft comprises explosive combination 10, positioning pulley mechanism 20, stay cord 30 and overhanging component 40.
Described explosive combination 10 is by explosive 11, balloon 12 and detonator 13 form, explosive 11 is fixed on the top of balloon 12, one end of detonator is by positioning pulley mechanism 20 and be arranged in balloon 12 surfaces and the other end is free control end, and the gravity of described explosive combination 10 is subject to force direction and buoyancy, pulling force is subject to force direction on same plumb line, this be because, if the gravity of balloon 12 explosive combination 10 in uphill process is subject to force direction and buoyancy, pulling force is subject to force direction not on same plumb line, so, balloon 12 can be subject to the horizontal component effect of stay cord 30, in the process rising at balloon 12, balloon 12 will occurred level direction movement, and, when balloon 12 rises to while collapsing space, because the drop shaft borehole wall 70 and tamper have infiltration for a long time, part infiltration meeting shape can be dripped, affect the vertical state that balloon 12 rises, so drip in drop shaft, under stay cord 30 horizontal component effects, balloon 12 rests on the space of collapsing, cannot continue to rise to block part along top, the space pit shaft that collapses, explosive 11 also just cannot contact with plugging block, cannot reach explosion dredging effect, so need to control the center of gravity of explosive combination 10 and the pulling force of described stay cord 30 on same plumb line.In order to achieve the above object, conventionally can be by explosive 11, detonator 13 symmetries, be arranged in equably on balloon 12, for example, as shown in Figure 2, explosive 11 is made into the powder column with sockets for collecting energy 11a structure, and be fixed on equably the top of balloon 12, detonator 13 can be arranged on the warp of balloon 12 spheroids symmetrically, also can detonator 13 around balloon in the shape of a spiral, etc., can find out, detonator 13 can be multiple common set-up mode, as long as can guarantee by explosive 11, the gravity of the explosive combination 10 that balloon 12 and detonator 13 forms is subject to the force direction can be with the pulling force of stay cord 30 on same plumb line.In addition, due to the definite error of the circularity of balloon 12 own and balloon summit, the fixing point of explosive 11 need to be determined through repetition test, to guarantee that the gravity of explosive combination 10 is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line, through test, balloon 12 is 20 meters of every risings, horizontal displacement is no more than in the situation of 0.5 meter, and employing suspends balloon 12 floatings when balloon 12 rises to hole collapse position, the way that continues after elimination of level displacement to rise can make balloon 12 smoothly by the space of collapsing, and arrives block part.
Wherein, balloon 12 of the present invention can adopt any less than atmospheric density, can make the balloon that freely floats, conventionally, the hydrogen balloon preferably easily obtaining.The top that explosive 11 is arranged on to balloon 12 is in order to guarantee that explosive 11 is adjacent to pass blocking chock, to reach the dredging of explosion better effect.In order to prevent balloon spheroid, because bear a heavy burden, cave in, make explosive 11 cannot directly contact plugging block, can be at the explosive support member 50 of fixing of described balloon 12 top center, 50 pairs of explosives of described explosive support member are played a supporting role, preferably lightweight carbon element burr.In addition, in one exemplary embodiment of the present invention, adopt the high strength plastics stay cord of diameter 1.5mm.
Described positioning pulley mechanism 20 is arranged on the below of explosive combination 10, can comprise a plurality of lightweights, the pulley flexibly that slides, one of them pulley is positioning pulley 21, by this positioning pulley mechanism 20, make 10 of explosive combinations be subject to vertical pulling force, i.e. the anhydrous power of dividing equally effect; Wherein, positioning pulley 21 be arranged on explosive combination 10 under, this positioning pulley 21 is fixed on steel plate 22, these steel plate 22 levels are arranged in drop shaft, size and the weight of steel plate 22 are selected as required, as long as can play stationary positioned pulley 21, when construction, can guarantee the effect that positioning pulley is not moved, in one exemplary embodiment of the present invention, steel plate 22 diameters of employing are that 120mm, thickness are 20mm; Other pulley is fixed on the guide rail 23 arranging along the drop shaft borehole wall, and from drop shaft bottom, extends to the observation panel of drop shaft, and in order to prevent guide rail upset when in work, to roll, guide rail can adopt angle steel.One end of stay cord is connected with the bottom of described balloon 12 by described positioning pulley mechanism 20, and the other end of stay cord is free control end, and operating personnel can control balloon by this free control end; In one exemplary embodiment of the present invention, for the guide rail length of fixed block, it is 8 meters; In addition, can also in described positioning pulley mechanism 20, anticreep baffle plate be set, the effect that anticreep baffle plate is set comes off in dispose procedure in order to prevent stay cord and detonator, reliably, at the uniform velocity, stably to discharge stay cord and detonator, can be that a baffle plate is set on pulley can be also other structures, as long as can block stay cord and detonator in case on-slip goes out the race of pulley.
Described overhanging component 40 be arranged on explosive combination 10 top and can near or away from explosive combination 10, described overhanging component 40 comprises the bar 41 of encorbelmenting, leading block 42 and lifting rope 43, leading block 42 is fixed on encorbelments on bar one end near explosive combination, and one end of lifting rope is connected with explosive combination 10 tops by leading block 42 and the other end is free control end.The effect that this overhanging component 40 mainly plays three aspects: is set: the bar 41 of (1) encorbelmenting can play the effect of hanging explosive combination 10, if explosive combination 10 is not hung up, so in the gas replenishment process of balloon 12, the spheroid of balloon 12 will be galled by the mineral aggregate of bottom in well or the borehole wall, so, with the bar 41 of encorbelmenting, explosive combination 10 is hung up and inflated to balloon 12, can effectively avoid the wearing and tearing of balloon spheroid; (2) balloon 12 is in gas replenishment process, and spheroid is upset constantly, easily causes stay cord 30, detonator 13 to be mutually wound around, to tie a knot, and uses the bar 41 of encorbelmenting, and under the effect of lifting rope 43 and stay cord 30, can effectively prevent above-mentioned situation to occur; (3) in addition, at balloon 12, have after certain buoyancy, the bar 41 of encorbelmenting can stop that balloon 12 rises, to continue inflation, makes balloon 12 reach predetermined air pressure, possesses the rising buoyancy needing.In order to make balloon 12 after inflation completes, overhanging component 40 does not block the rising of balloon 12, by this overhanging component 40 be set to can near or away from the structure of explosive combination 10, for example, be set to can be flexible mechanism, or the mechanism that can slide, as long as its can play near or away from explosive combination 10, when near explosive combination 10, can play the effect of above-mentioned three aspects:, and after inflation completes, can be away from explosive combination 10, can not stop explosive combination 10, make its normal rising.Encorbelment the length of bar 41 generally according to production actual selection, and in one exemplary embodiment of the present invention, the bar 41 of encorbelmenting adopts the steel pipe of long 12 meters to make, and the surface of the bar 41 of encorbelmenting is through technological processing for explosion protection feature; In order reliably, at the uniform velocity, stably to discharge lifting rope, described anticreep baffle plate can also be set on described leading block 42.
Because the gross weight of explosive combination 10 is larger, before balloon 12 inflations, the weight of explosive combination 10 is by bar 41 burdens of encorbelmenting, and in actual production, the distance that the bar 41 of encorbelmenting stretches in well from observation panel is longer, in one exemplary embodiment of the present invention, the bar 41 of encorbelmenting stretches into distance and is about 4.5 meters, as the method with manpower, need the multiple person cooperational bar 41 of could balance encorbelmenting, but observe gallery narrow field, can not hold the lower more operating personnel (fireman in addition of on-the-spot collaborative construction, inflation personnel, signalman etc.), in order to reduce difficulty of construction, can be by support unit being set at drop shaft observation panel place, so that encorbelment bar 41 can on support unit, move with near or away from explosive combination 10.This support unit comprises the support 61 being fixed on drop shaft observation panel, and be fixed on the support roller 62 on support 61, the race diameter of support roller 62 with described in the encorbelment diameter of bar 41 mate, usually, by race diameter control in than the scope of the large 5～8mm of shank diameter that encorbelments so that the bar 41 of encorbelmenting can move on race so near or away from explosive combination 10.By this support 61 and support roller 62 the encorbelment weight of one end described in bar of balance easily, constructability.
According to a further aspect in the invention, as shown in Figure 1 and Figure 2, adopt the device of exemplary embodiment of the present to carry out the high-order obstruction of explosion treatment drop shaft, comprise the following steps of carrying out successively:
Measure the position of collapsing of drop shaft, and obtain the collapse the highest and lowest elevation at position and the elevation of the block part on the top, position of collapsing.
Above-mentioned balloon suspension explosive blasting is processed to the high-order device stopping up of drop shaft and be arranged in drop shaft, and in installation process, guarantee that the gravity of explosive combination 10 is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line.
Then, balloon 12 is inflated to default pressure.After having inflated, move and encorbelment bar 41 to the position away from body of explosive, cut off lifting rope 43, and discharge the free control end of stay cord 30 and detonator 13, so that explosive combination 10 freely floats up to the position of collapsing.
To stopping at the explosive combination 10 at the position of collapsing, carry out horizontal displacement and revise, to control the gravity of explosive combination 10, be subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line.
Again discharge the free control end of stay cord 30 and detonator 13, make explosive combination 10 floatings also finally rise to the block part on the top, position of collapsing by the position of collapsing.
Finally, carry out explosion treatment.
Wherein, determining of the weight of 10 suspension explosives 11 of explosive combination, generally according to the gravity of explosive combination 10, account for 2/5 of balloon buoyancy, the pulling force of stay cord accounts for 3/5 principle of balloon buoyancy and determines, to guarantee the steadily of centre of gravity of explosive combination 10, when rising process thereon and arriving block part, do not overturn.
In sum, the invention provides balloon suspension explosive blasting and process the high-order device and method stopping up of drop shaft.Advantage of the present invention comprises: (1) by controlling the distribution of explosive, detonator, and after reaching the position of collapsing, explosive combination carries out horizontal displacement correction, the gravity that has guaranteed explosive combination is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line, make to suspend the balloon of explosive can be smoothly by collapse space rise to block part of drop shaft, reach the dredging of explosion preferably effect; (2) explosive is arranged on to the top of balloon, and explosive support member is set, make explosive can better more directly contact plugging block, brought into play to greatest extent the energy of explosive; (3) overhanging component is installed, is effectively avoided the wearing and tearing of balloon spheroid in gas replenishment process, and be convenient to inflation, in addition, by support roller and support are installed, make work progress convenient easily.
Although described the present invention with exemplary embodiment by reference to the accompanying drawings above, those of ordinary skills should be clear, in the situation that do not depart from the spirit and scope of claim, can carry out various modifications to above-described embodiment.
Claims (7)
1. balloon suspension explosive blasting is processed the high-order device stopping up of drop shaft, it is characterized in that, described device comprises explosive combination, positioning pulley mechanism, stay cord and overhanging component;
Wherein, positioning pulley mechanism is arranged on the below of explosive combination, and one end of stay cord is connected with explosive combination bottom by positioning pulley mechanism and the other end is free control end;
Explosive combination consists of balloon, explosive and detonator, explosive is fixed on balloon top, one end of detonator is connected at balloon surface and with explosive by positioning pulley arrangement of mechanism and the other end is free control end, and the gravity of described explosive combination is subject to force direction and buoyancy, pulling force to be subject to force direction on same plumb line;
Overhanging component be arranged on explosive combination top and can near or away from explosive combination, described overhanging component comprises the bar of encorbelmenting, leading block and lifting rope, leading block is fixed on one end of close explosive combination of the bar of encorbelmenting, and one end of lifting rope is connected with explosive combination top by leading block and the other end is free control end.
2. balloon suspension explosive blasting according to claim 1 is processed the high-order device stopping up of drop shaft, it is characterized in that, described overhanging component also comprises the support unit that is arranged on drop shaft observation panel place, described support unit comprises the support being fixed on drop shaft observation panel, and be fixed on the support roller on support, the race diameter of support roller with described in the encorbelment diameter of bar mate so that the bar of encorbelmenting can move on race so near or away from explosive combination.
3. balloon suspension explosive blasting according to claim 1 is processed the high-order device stopping up of drop shaft, it is characterized in that, described device also comprises the explosive support member that is fixed on described balloon top center.
4. balloon suspension explosive blasting according to claim 3 is processed the high-order device stopping up of drop shaft, it is characterized in that, described explosive support member is lightweight carbon element burr.
5. balloon suspension explosive blasting according to claim 1 is processed the high-order device stopping up of drop shaft, it is characterized in that, on described positioning pulley mechanism and/or described leading block, is provided with anticreep baffle plate.
6. balloon suspension explosive blasting is processed the high-order method of stopping up of drop shaft, it is characterized in that, comprises the following steps of carrying out successively:
Measure the position of collapsing of drop shaft, and obtain the collapse the highest and lowest elevation at position and the elevation of the block part on the top, position of collapsing;
Balloon suspension explosive blasting described in any one in claim 1 to 5 is processed to the high-order device stopping up of drop shaft and be arranged in drop shaft, and in installation process, guarantee that the gravity of explosive combination is subject to force direction and pulling force to be subject to force direction on same plumb line;
By the extremely default pressure of balloon inflation;
After having inflated, the mobile bar of encorbelmenting, to the position away from body of explosive, is cut off lifting rope, and is discharged the free control end of stay cord and detonator, so that explosive combination freely floats up to the position of collapsing;
To stopping at the horizontal displacement of the explosive combination at the position of collapsing, revise, to control the gravity of explosive combination, be subject to force direction and suffered buoyancy, pulling force to be subject to force direction on same plumb line;
Again discharge the free control end of stay cord and detonator, make explosive combination floating also finally rise to the block part on the top, position of collapsing by the position of collapsing;
Carry out explosion treatment.
7. balloon suspension explosive blasting according to claim 6 is processed the high-order method of stopping up of drop shaft, it is characterized in that, the gravity of controlling described explosive combination is 2/5 of balloon buoyancy, and the pulling force of stay cord is 3/5 of balloon buoyancy.
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| CN201210442216.4A CN102927864B (en) | 2012-11-08 | 2012-11-08 | Device and method for performing blasting processing for ore-pass high position blockage by balloon suspended explosive powders |
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| CN201210442216.4A CN102927864B (en) | 2012-11-08 | 2012-11-08 | Device and method for performing blasting processing for ore-pass high position blockage by balloon suspended explosive powders |
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| CN112874785B (en) * | 2021-01-22 | 2024-04-26 | 安徽太平矿业有限公司 | Device and method for treating drop shaft blockage |
| CN113513955A (en) * | 2021-06-17 | 2021-10-19 | 中国葛洲坝集团国际工程有限公司 | Shaft dredging blasting method |
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| 高位溜矿天井堵塞疏通技术;李小文;《有色金属》;20030731;第55卷(第4期);第31页第2.2小节，第2.3小节、附图2-3 * |
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