CN107989614A - The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production - Google Patents

The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production Download PDF

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Publication number
CN107989614A
CN107989614A CN201711273569.5A CN201711273569A CN107989614A CN 107989614 A CN107989614 A CN 107989614A CN 201711273569 A CN201711273569 A CN 201711273569A CN 107989614 A CN107989614 A CN 107989614A
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ore
stope
rock
mineral building
disk
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CN107989614B (en
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夏建波
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Kunming Metallurgy College
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Kunming Metallurgy College
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/18Methods of underground mining; Layouts therefor for brown or hard coal

Abstract

The invention discloses a kind of mining methods of the inclined thick ore body of disk rock crusher in back production;First dig up mine in nugget room, recycling ore pillar, during mineral building back production, ore body through-thickness is divided into two layers to be exploited, the thick layerings of 1 2m of top disk direction thickness are first adopted, are promoted from bottom to top with working face, upper armor rock is reinforced using per-fore pouring liquid with small pipe and suspension roof support, and by fore-set explosion into peach-shaped ore pillar, using the wide opening funnel formed between two peach-shaped ore pillars by upper stage casing it is flat in be not bled off part ore and be put into this stage casing;Then exploit in mineral building and be layered by lower wall, undercuted in Bottom of Stope, layer falls ore deposit as scope of freedom carrying out horizontal fan shaped medium length hole explosion to undercut;The mining methods of the present invention, have that the rate of dilution is low, adopts and cuts that quantities is few, and resource recovery is high, low compared to cut and fill cost compared to block chambering method and Caving Method with Large Space.

Description

The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production
Technical field
The invention belongs to non-coal underground mining technical field, specifically, is related to a kind of urgency of disk rock crusher in back production The mining methods of inclined thick orebody.
Background technology
Metal uses disk catalase in sublevel caving method or stratified filling method back production more with nonmetallic underground mine at present Inclined thick ore deposit ore body, also have the part mine medium broken come armor rock in back production using the barnyard such as block chambering method class room of digging up mine Broken inclined thick ore body.When exploiting such ore body using sublevel caving method, the ore under adopting is the rock in upper disk slump Covering is lower to carry out ore removal, and during ore removal, rock mutually mixes with ore, causes mine grade to be greatly reduced, and then influences Significantly raised to beneficiation cost, particularly low-grade ore exploitation when, barren rock it is a large amount of be mixed into will result directly in extracted ore can not It is selected, cause resource largely to waste if abandoning;When using such ore body of cut and fill, and need to build supporting filling system To unite, prepare corresponding filler, mining cost is significantly raised, and filling method long construction period, and production capacity is relatively low, for The exploitation of the secondary economic mineral products in limit is totally unfavorable.Inclined using the medium broken urgency of armor rock in block chambering method back production in part mine Tiltedly thickness ore body, in force during deep hole blasting, due to influence of the vibrations to upper armor rock of explosion, causes caving in for top plate, gives up Stone is mixed into, and has seriously affected mine grade, in addition, when using medium-length hole blasting, since boundary line of ore bed and rock control is ineffective, is easily led to Poor damage index is bigger than normal.Compared to Caving Method with Large Space and filling method, open-stope method is most economical efficient mining methods, compared to Caving Method with Large Space, barnyard The poor damage index of method is relatively low., but the slump of armor rock and the control of boundary line of ore bed and rock during medium-length hole blasting must be solved and asked Topic, during ensureing nugget exploitation the stabilization of upper disk and by poor damage norm controlling in reduced levels.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art and provide disk rock crusher in a kind of back production Inclined thick ore body mining methods, in order to enable the inclined thick ore body of upper disk rock crusher using ore loss and dillution it is equal Less economical and efficient method carries out back production, and the present invention provides the inclined thick ore body of disk rock crusher in a kind of back production to adopt Ore deposit method, suitable for exploiting upper disk rock crusher and requiring ore losses and the relatively low inclined thick orebody mining of the rate of dilution.
In order to solve the above technical problems, the present invention is using the basic conception of technical solution:
The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production, mineral building and ore pillar are divided in nugget, is first returned Dig up mine room, recycling ore pillar, during mineral building back production, is divided into two layers by ore body through-thickness and is exploited, first exploit top disk side Layering to thickness 1-2m thickness, promotes from bottom to top with working face, and upper disk is reinforced using per-fore pouring liquid with small pipe and suspension roof support Country rock, and by fore-set explosion into peach-shaped ore pillar, it is using the wide opening funnel formed between two peach-shaped ore pillars that upper stage casing Bottom of Stope is residual The ore stayed is put into this stage casing, then exploits in mineral building and is layered by lower wall, is undercuted in Bottom of Stope, real as the scope of freedom using the layer that undercuts Apply horizontal fan shaped medium length hole explosion and fall ore deposit.
By ore body division it is stage casing in short transverse in the present invention, across pitch division nugget in stage casing, in units of nugget Exploited;Division mineral building and ore pillar, first rooming, recycling ore pillar in nugget;When mineral building is exploited, by ore body along thickness side Exploited to two layerings are divided into, first adopt the higher slice in top disk direction, then adopt the lower leaf by lower wall direction, adopt higher slice When synchronously reinforce armor rock, implement upper disk rock during medium-length hole blasting and nugget are exploited for lower leaf and keep stablizing to create Condition;The high 40m-60m in stage casing, nugget move towards long 40m-50m, the wherein wide 8m-10m of studding, the high 4m-6m of fore-set;For maximum limit The reduction ore pillar of degree takes ore deposit amount and excavation work amount, Bottom of Stope use route type ore removal flat-bottom structure, do not set slusher runner, no If funnel and temporary ditch etc..
The mining methods of the inclined thick ore body of disk rock crusher, comprise the following steps in a kind of back production:
S1:The setting of block structure parameter:The high 40m-60m in stage casing is set, nugget moves towards long 40m-50m, the wherein wide 8m- of studding 10m, the high 4m-6m of fore-set, using the flat polycrystalline substance of route type ore removal;
S2:Nugget is adopted accurate with cutting engineering:Level haulage tunnel and return aircourse are arranged in outside lower wall arteries and veins, stope raise arrangement Ore body lower wall direction is leaned in studding, from stope raise to driving segmentation connection roadway in disk direction on ore body, is respectively segmented connection roadway The vertical height difference 8m-10m in road, segmentation connection roadway by disk direction on ore body end to the pick of both sides mineral building have room neck, The contact The Small Well of a height of 4m-5m is dug upwards, then mineral building connection roadway is dug from contact The Small Well to both sides mineral building;From stope raise to both sides Mineral building digs drilling chamber connection roadway and drilling chamber, the height difference 4m-5m of each drilling chamber connection roadway;In Bottom of Stope, from stage casing Haulage way tunnels an ore removal route to mineral building every 6m-8m, and ore removal route is dug to disk ore-rock contact surface on ore body, then edge Orebody trend opens cutting lane, the high 2m-2.5m in cutting lane, width are identical with ore body higher slice working thickness, length is identical with mineral building length, Both ends are penetrated through with room neck;
S3:Higher slice is exploited and upper disk surrounding rock consolidation:Mining face and working space headed by cutting lane, armor rock is steady in inspection Solidity, sillar will be anchored, the upward armor rock of disk ore-rock contact line is with 15-30 ° of outer limb along ore body built on the sand using anchor pole Perforating simultaneously loads ductule progress slip casting, advance reinforcement top country rock, each ductule direction of insertion keeping parallelism;In cutting lane Row shallow bore hole is tied upwards, and hole depth 2.2m-2.8m, implements short delay explosion and fall ore deposit, per separate explosion ore body height in 2.0m- 2.5m;1/3 or so of this separate explosion ore amount is shoveled out by the ore removal route of Bottom of Stope, remainder is stayed in stope and carried Armor rock on standing platform and temporary support mineral building for continuing up operation;In Stope face, inspection newly exposes upper The grouting consolidation effect of armor rock, to local sillar built on the sand using anchor rod anchored, the direction of insertion of anchor pole and inserting for ductule Enter direction and keep vertical, the depth of anchor pole, which is subject to, anchors into ductule effective grouting area, is then connect along the ore-rock newly exposed Tactile line is continued up reinforces top country rock using small-lead-tube advanced slip-casting, is then further continued for tying row shallow blasting upwards and falls ore deposit, Pass through Bottom of Stope ore removal route ore removal again;Above operation is repeated, until mineral building top fore-set position is arrived in exploitation, is divided into fore-set Play shallow blasting from bottom to top twice, the wide opening funnel that width is 3m-5m is formed by fore-set explosion into peach-shaped, between peach-shaped ore pillar, will Upper stage casing bottom residual ore is slipped into this stage casing mineral building;Finally, in Bottom of Stope ore removal route, by whole ore shovels in mineral building Go out;
S4:Lower leaf is exploited:In Bottom of Stope by the use of ore removal route as drilling drift, shallow bore hole is beaten into both sides ore body, upwards Layering dead zone direction short delay explosion forms the layer that undercuts;In the drilling chamber of stope raise both sides, fetch water to mineral building ore body Flat fan shaped medium length hole, then undercuts layer as the scope of freedom using bottom, short delay explosion, per separate explosion 2-4 artillery salvos hole, ore reduction After fall into Bottom of Stope, shoveled out by Bottom of Stope ore removal route;
S5:Ore pillar recycles:At the fore-set position of stope raise both sides, driving returns back to top drilling chamber, and in the drilling chamber that returns back to top to Fetch water in fore-set flat fan shaped medium length hole;Stamped in studding in each mineral building connection roadway, drilling chamber connection roadway to or it is lower to parallel Shallow bore hole;Respectively it is segmented in connection roadway, stamps to fan shaped medium length hole, covering of the fan is parallel to disk ore-rock contact surface on ore body in studding;It is quick-fried Break respectively row's shallow bore hole above and below mineral building connection roadway, explosion in the studding that using segmentation millisecond detonating, first detonates by row and be oriented to both sides sky Area, each row's fan shaped medium length hole in the studding that and then detonates by row from upper disk to lower wall direction again, explosion are oriented to disk, then by The parallel shallow bore hole above and below drilling chamber connection roadway in quick-fried studding is queued, each row of horizontal fan in the fore-set that finally detonates from bottom to top by row Shape medium-length hole, explosion are oriented to lower part goaf;Ore pillar falls into both sides goaf bottom after crushing, shoveled out by ore removal route.
In the present invention, nugget is adopted accurate with cutting engineering in S2, and level haulage tunnel and return aircourse are arranged in lower wall arteries and veins Outside, stope raise is arranged in studding and leans on ore body lower wall direction;In order to reduce connecting taxiway quantities, from the vertical height difference of stope raise Every 8m-10m on ore body disk direction driving segmentation connection roadway, its end to both sides mineral building pick room neck, upwards The contact The Small Well of a height of 4m-5m is dug, then mineral building connection roadway, the vertical height of each mineral building connection roadway are dug from contact The Small Well to both sides mineral building Poor 4m-5m;Drilling chamber connection roadway and drilling chamber, the height difference of each drilling chamber connection roadway are dug from stope raise to both sides mineral building 4m-5m, invention dig drilling chamber in the stope raise both sides by lower wall direction, when Drilling is by lower wall ore body and rock interface Place it is lateral opening when, be easy to rock drilling worker grasp blasthole trend it is parallel with ore-rock contact surface, it is quick-fried to significantly reduce traditional medium-length hole The higher risk of broken depletion loss rate.In Bottom of Stope, from level haulage gallery to mineral building every 6m-8m tunnel an ore removal into Road, ore removal route are dug to disk ore-rock contact surface on ore body, then are opened cutting lane along orebody trend and undercuted as what higher slice was exploited Space, the high 2m-2.5m in cutting lane, wide, both ends identical with mineral building length identical with ore body higher slice working thickness, long and mineral building join Network road penetrates through.
In the present invention, higher slice exploitation and upper disk surrounding rock consolidation, higher slice thickness are generally 1-2m, can guarantee that operation in S3 Personnel and equipment can smoothly complete operation in working face.To reduce influence of the concussion of blasting to upper armor rock, to parallel on Shallow bore hole, implements short delay explosion and falls ore deposit.Meanwhile parallel shallow bore hole is conducive to rock drilling worker and is accurately dug along the line of demarcation of ore-rock Rock, to reduce mining loss and dilution.In exploitation, first mining face and working space headed by cutting lane, first check for The stability of armor rock, sillar will be anchored built on the sand using anchor pole.Again along ore body the upward armor rock of disk ore-rock contact line with 15- 30 ° of outer limb perforating simultaneously loads ductule progress slip casting, and advance reinforcement top country rock, each ductule direction of insertion keeps flat OK, to accelerate drawing speed, the additives such as accelerator can be added in injection slurry;Deng pre-grouting body with country rock is cementing reaches regulation After intensity, then tie row shallow bore hole upwards in cutting lane, hole depth 2.2m-2.8m, implements short delay explosion and fall ore deposit, per separate explosion Ore body height is in 2.0m-2.5m;1/3 or so of this separate explosion ore amount is shoveled out by the ore removal route of Bottom of Stope, remaining Armor rock on the standing platform and temporary support mineral building for being provided in stope and continue up operation is provided;In Stope face, Check the grouting consolidation effect of the upper armor rock newly exposed, anchor rod anchored, the insertion of anchor pole is used to local sillar built on the sand Direction is vertical with the direction of insertion holding of ductule, and the depth of anchor pole, which is subject to, anchors into ductule effective grouting area, Ran Houyan The ore-rock contact line newly exposed is continued up reinforces top country rock using small-lead-tube advanced slip-casting, is then further continued for tying upwards Row shallow blasting falls ore deposit, then passes through Bottom of Stope ore removal route ore removal;Above operation is repeated, until mineral building top fore-set is arrived in exploitation Position, to improve production efficiency, sets 2-3 bench on working face, working face across pitch is divided into 2-3 segmentation and is opened Adopt.Play shallow blasting from bottom to top at twice into fore-set, it is 3m-5m to form width by fore-set explosion into peach-shaped, between peach-shaped ore pillar Wide opening funnel, by upper stage casing bottom residual ore slip into this stage casing mineral building, because wide opening funnel is located at top disk direction, and at this It is the place that upper stage casing residual ore is concentrated again, the utilization rate of resource can greatly improved;Finally, in Bottom of Stope ore removal route In, whole ores in mineral building are shoveled out.
In the present invention, lower leaf exploitation in S4, in Bottom of Stope by the use of ore removal route as drilling drift, to both sides ore body In beat shallow bore hole, be layered the short delay explosion of dead zone direction upwards and formed and undercut layer;In the drilling chamber of stope raise both sides, to Mineral building ore body is fetched water flat fan shaped medium length hole, then undercuts layer as the scope of freedom using bottom, and short delay explosion falls ore deposit, per separate explosion 2- 4 artillery salvo holes.Because horizontal fan shaped medium length hole explosion is oriented to Bottom of Stope, after higher slice is mined out in addition, its dead zone is not only Lower leaf exploitation provides free space, and dead zone yet forms both one of burst stress wave reflection and the barrier absorbed, and lower leaf is quick-fried When stress wave caused by broken is delivered to ore with the interface of dead zone, one of reflecting surface is formed because Media density is different, instead The stress wave being emitted back towards in ore body is further crushed with being produced after other stress wave superimpositions to ore, and boulder yield is smaller.Ripple is transmitted to For stress wave a portion in dead zone again by air cushioning with absorbing, influence of the final Explosion stress wave to upper armor rock will be big Width reduces.Bottom of Stope is fallen into after ore reduction, is shoveled out by Bottom of Stope ore removal route.
In the present invention, ore pillar recycles in S5, and at the fore-set position of stope raise both sides, the rock drilling cave that returns back to top is tunneled to both sides Room, and flat fan shaped medium length hole of fetching water in the drilling chamber that returns back to top into fore-set;Each mineral building connection roadway, drilling chamber connection in studding Stamped in network lane to or it is lower to parallel shallow bore hole;Respectively stamped in studding to fan shaped medium length hole in segmentation connection roadway, covering of the fan parallel to Disk ore-rock contact surface on ore body;Explosion is using segmentation millisecond detonating, each row in the studding that first detonates by row above and below mineral building connection roadway Shallow bore hole, explosion are oriented to both sides dead zone, each row's fan shaped medium length hole in the studding that and then detonates by row from upper disk to lower wall direction again, Explosion is oriented to disk, the parallel shallow bore hole in the studding that then detonates by row above and below drilling chamber connection roadway, finally by row from lower and Each row of horizontal fan shaped medium length hole, explosion are oriented to lower part goaf in upper detonation fore-set.In order to continue when lower stage casing is exploited Using the courtyard cut-off 3 in this stage casing, when recycling studding, the following ore body not perforating of most next drilling chamber connection roadway, Not explosion, the aperture Duan Jun not powder charges of most next last row's fan shaped medium length hole of segmentation, reserves protection stope raise after explosion Ore pillar.Ore pillar falls into both sides goaf bottom after crushing, shoveled out by ore removal route.Ore pillar is segmented short-delay blasting one by the present invention Secondary detonation is recycled, first quick-fried studding, rear quick-fried fore-set, and controllable upper stage casing emits the barren rock for falling into dead zone positioned at recycling ore pillar ore On, reduce being mixed into for barren rock.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
Ore body through-thickness is divided into two layerings and is exploited by the present invention, first adopts the layering in top disk direction, with Working face promotes from bottom to top, synchronous to reinforce upper armor rock, and implementing medium-length hole blasting for lower leaf creates conditions, using parallel shallow Hole explosion, it is stringent to control ore-rock line of demarcation, depletion loss rate is advantageously reduced, fore-set is arranged to the upper stage casing bottom of wide opening funnel recycling Portion remains ore, improves resource recovery;Bottom of Stope is directed toward in explosion when lower leaf is exploited, at the same it is mined out using higher slice Buffering barrier of the area as concussion of blasting, effectively reduces destruction of the explosion to upper armor rock, drilling chamber is arranged At lower wall ore-rock contact line, be conducive to lateral opening Drilling control accuracy, it is favourable to reducing medium-length hole blasting depletion loss rate.Pass through Optimize ore pillar recycling blasting technology, ore pillar recycling ratio can be improved, barren rock is reduced and be mixed into.Quasi- work arrangement is adopted by optimization, is subtracted Foundation is lacked and has taken ore deposit amount, reduced and adopt quasi- quantities.The mining technology that the invention provides, compared to Caving Method with Large Space and sub-level primary stoping Have the advantages that loss late and the rate of dilution are low, there is cost is low, short construction period, production capacity are big etc. compared to filling class mining codes Advantage, being particularly rare low-grade mineral resource for recycling mineral resources has obvious application value.
The present invention is suitable for the upper disk Rock Joints Surrounding of exploitation, cranny development, and requires ore losses and the relatively low urgency of the rate of dilution Inclined thick orebody is exploited.
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
A part of the attached drawing as the application, for providing further understanding of the invention, of the invention is schematic Embodiment and its explanation are used to explain the present invention, but do not form inappropriate limitation of the present invention.Obviously, drawings in the following description Only some embodiments, to those skilled in the art, without creative efforts, can be with Other accompanying drawings are obtained according to these attached drawings.In the accompanying drawings:
Fig. 1 is higher slice Mining profilograph of the present invention;
Fig. 2 is I-I drawing in side sectional elevation of higher slice Mining of the present invention;
Fig. 3 is II-II drawing in side sectional elevation of higher slice Mining of the present invention;
Fig. 4 is III-III drawing in side sectional elevation of higher slice Mining of the present invention;
Fig. 5 is IV-IV horizontal sectional drawing of higher slice Mining of the present invention;
Fig. 6 is V-V horizontal sectional drawing of higher slice Mining of the present invention;
Fig. 7 is lower leaf Mining profilograph of the present invention;
Fig. 8 is lower leaf Mining A-A drawings in side sectional elevation of the present invention;
Fig. 9 is lower leaf Mining B-B drawings in side sectional elevation of the present invention;
Figure 10 is lower leaf Mining C-C drawings in side sectional elevation of the present invention;
Figure 11 is lower leaf Mining D-D horizontal sectional drawings of the present invention;
Figure 12 is lower leaf Mining E-E horizontal sectional drawings of the present invention;
Figure 13 is pillar recovery drawing in side sectional elevation of the present invention;
Figure 14 is VI-VI profilograph of pillar recovery of the present invention;
Figure 15 is VII-VII profilograph of pillar recovery of the present invention;
Figure 16 is VIII-VIII profilograph of pillar recovery of the present invention;
Figure 17 is Ⅸ-Ⅸ horizontal sectional drawing of cap pillar extraction of the present invention.
In figure:1- level haulage gallerys;2- ore removal routes;3- courtyard cut-offs;4- stope raises;5- segmentation contacts Lane;6- mineral building connection roadways;7- gets in touch with The Small Well;8- undercuts tunnel;9- slip casting ductules;10- anchor poles;11- studdings;12- fore-sets; 13- peach-shaped ore pillars;14- wide opening funnels;15- adopts lower ore;16- enclosing walls;The top disk layering of 17- ore bodies;18- ore bodies lean on lower wall Layering;The upper stage casings of 19- do not shovel out ore body;20- is upper to parallel shallow bore hole;21- working faces;22- drilling chamber connection roadways;23- rock drilling Chamber;The horizontal fan shaped medium length holes of 24-;25- undercuts layer;26- higher slices dead zone;27- fore-sets recycle drilling chamber;Between 28- recycling To parallel shallow bore hole on column;To parallel shallow bore hole on 29- recycling studdings;To fan shaped medium length hole on 30- recycling studdings;31- recycles fore-set Horizontal fan shaped medium length hole;32- most it is lower segmentation last flow back to receive studding fan shaped medium length hole;33- protects stope raise ore pillar;34- Tailgate.
It should be noted that these attached drawings and word description are not intended as the design model limiting the invention in any way Enclose, but idea of the invention is illustrated for those skilled in the art by reference to specific embodiment.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, the technical solution in embodiment is clearly and completely described, following embodiments be used for illustrate the present invention, but It is not limited to the scope of the present invention.
Embodiment 1
As shown in Fig. 1 to Figure 17, the mining side of the inclined thick ore body of disk rock crusher in a kind of back production described in the present embodiment Method, 76 ° of the slanting angle of ore body, thickness 18m, upper disk catalase, stability is poor, averagely allows exposed area to be less than 40m2, ore body Belong to vulcanization cave ore deposit, average grade 0.6%.Exploited using mining methods provided by the invention, its main technique is as follows:
Nugget divides:It is from top to bottom stage casing by ore body division, level haulage gallery 1 and the height difference of tailgate are high for stage casing, The a height of 50m in stage casing.Nugget arranges along orebody trend, the long 42m of a length of 50m, wherein mineral building, the wide 8m of ore pillar.The high 4.8m of fore-set, does not set The high 45.2m of foundation, i.e. mineral building, mineral building width are ore body thickness 18m.First dig up mine room, recycle ore pillar afterwards.Two layers of progress is divided into mineral building Exploitation, first adopts the thick layerings of 2m of top disk, then exploits the thick layerings of 16m by lower wall.
Adopt accurate with cutting:Level haulage gallery 1 and tailgate 34 are dug in ore body lower wall country rock, from level haulage Gallery 1 and return aircourse 34 lead to nugget studding 11 every 50m to ore body pick courtyard cut-off 3, courtyard cut-off dig to After in studding 11, stope raise 4 is dug upwards along ore body lower wall border in studding 11, and get in touch with the courtyard of top return air level Gallery 3 penetrates through.From stope raise 4, vertical height difference every 10m, to ore body on disk direction pick segmentation connection roadway 5, be segmented connection roadway 5 Behind pick to disk border on ore body, to both sides mineral building driving mineral building connection roadway 6, dig 5m's high upwards from the end for being segmented connection roadway 5 Get in touch with The Small Well 7, then the pick mineral building connection roadway 6 from contact The Small Well 7 to both sides.In Bottom of Stope, from level haulage gallery 1 every 7m to Mineral building excavates ore deposit route 2, and the tunnel radius of turn between level haulage gallery 1 and ore removal route 2 is not less than 6m.Ore removal route 2 Pick is mutually communicated to behind disk border on ore body to both sides driving production, and formation length is equal with mineral building, wide 2m, high 2.5m undercut Tunnel 8.
Top disk slicing:Undercut after the formation of tunnel 8, first mining face and working space headed by the tunnel 8 that undercuts, first First check the stability of upper armor rock, sillar will be anchored built on the sand using anchor pole 10.Disk ore-rock contact line is upward along ore body again Armor rock is with the outer limb perforating of 15-30 degree and loads the progress slip casting of ductule 9, and advance reinforcement top country rock, each ductule 9 is inserted Enter direction keeping parallelism, accelerator is added in injection slurry;Wait 2-3 days, waiting pre-grouting body and country rock, cementing to reach 10Mpa strong After degree, then tie row shallow bore hole 20 upwards in cutting lane, hole depth 2.8m, implements short delay explosion and fall ore deposit, per separate explosion ore body Height is in 2.5m;To improve production efficiency, 2 bench are set on working face, working face across pitch is divided into 2 segmentations and is handed over For exploitation and reinforcement operation.1/3 or so of this separate explosion ore amount is shoveled out by the ore removal route 2 of Bottom of Stope, its remaining part Fractionation provides armor rock on the standing platform for continuing up operation and temporary support mineral building in stope;In Stope face 20, Check the grouting consolidation effect of the upper armor rock newly exposed, local sillar built on the sand is anchored using anchor pole 10, anchor pole 10 Direction of insertion is vertical with the direction of insertion holding of ductule 9, the depth of anchor pole 10 using anchor into 9 effective grouting area of ductule as Standard, then along the ore-rock contact line newly exposed continue up using 9 pre-grouting of ductule reinforce top country rock, then followed by Continuous tying 20 explosion of row shallow bore hole falls ore deposit upwards, then passes through 2 ore removal of Bottom of Stope ore removal route;Above operation is repeated, until exploitation To 12 position of mineral building top fore-set.Shallow blasting is played from bottom to top at twice into fore-set 12, by fore-set explosion into peach-shaped ore pillar 13, the wide opening funnel 14 that width is 5m is formed between peach-shaped ore pillar 13, upper stage casing bottom residual ore 19 is slipped into this stage casing mineral building, because Wide opening funnel 14 is located at top disk direction, and at this is the place that upper stage casing residual ore 19 is concentrated, and money can greatly improved The utilization rate in source;Finally, in Bottom of Stope ore removal route 2, whole ores in mineral building are shoveled out.
By lower wall separate zone production:From stope raise 4 along vertical height difference 3m drilling chambers are respectively tunneled to both sides studding every 5m Connection roadway 22, then tunnel drilling chamber 23;In Bottom of Stope by the use of ore removal route 2 as rock drilling route, with ore body higher slice Implement multiple shallow blasting as the scope of freedom and form the layer 25 that undercuts in dead zone;In mineral building both sides drilling chamber 23, fetch water to mineral building Flat fan shaped medium length hole 24, to undercut, layer 25 falls ore deposit for scope of freedom carrying out horizontal fan shaped medium length hole explosion;Bottom of Stope ore removal into Scraper is used in road 2, part ore is fitted into mine car, then transport earth's surface.
Ore pillar recycles:Comprise the following steps:
Drilling chamber is dug:At fore-set position, fore-set recycling drilling chamber 27 is tunneled from stope raise 4 to both sides;
Perforating:Fetch water in fore-set recycles drilling chamber 27 into fore-set 12 flat fan shaped medium length hole 31;In each mineral building connection roadway 6 and Stamped in drilling chamber connection roadway 22 to and it is lower to parallel shallow bore hole 28 and 29;In each segmentation connection roadway 5, stamped into studding 11 To fan shaped medium length hole 30, covering of the fan is parallel to disk ore-rock contact surface on ore body;
Explosion:Explosion is using segmentation millisecond detonating, and each row's shallow bore hole 28 first to detonate by row from the middle part of two lateral studdings in studding is quick-fried It is broken to be oriented to both sides dead zone, then each row's fan shaped medium length hole 30 in the studding that detonates by row from upper disk to lower wall direction, explosion is oriented to Upper disk, then by row from each row's shallow bore hole 29 in the middle part of two lateral studdings in detonation studding, finally detonate fore-set by row from bottom to top Interior each row of horizontal fan shaped medium length hole 31, explosion are oriented to lower part goaf.In order to be continuing with when lower stage casing is exploited in this The courtyard cut-off 3 of section, when recycling studding, the following ore body not perforating of most next drilling chamber connection roadway, not explosion, most The aperture Duan Jun not powder charges of last row's fan shaped medium length hole of next segmentation, reserve protection stope raise ore pillar 33 after explosion;
Ore removal:Bottom of Stope is fallen into after ore pillar explosion, ore is fitted into mine car using scraper in ore removal route, then transports Earth's surface;
Close dead zone:After the completion of ore removal, by towards the ore removal route 2 of dead zone, segmentation connection roadway 5, stope raise 4 it is suitable for reading etc. Closed using fire dam 16.
The above is only presently preferred embodiments of the present invention, not makees limitation in any form to the present invention, though So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.

Claims (3)

1. the mining methods of the inclined thick ore body of disk rock crusher in a kind of back production, it is characterised in that ore deposit is divided in nugget Room and ore pillar, first rooming, recycling ore pillar, during mineral building back production, is divided into two layers by ore body through-thickness and is exploited, first The higher slice of top disk direction thickness 1-2m thickness is exploited, is promoted from bottom to top with working face, using per-fore pouring liquid with small pipe and anchor Armor rock on bar support reinforcement, and by fore-set explosion into peach-shaped ore pillar, will be upper using the wide opening funnel formed between two peach-shaped ore pillars Bottom of Stope remaining ore in stage casing is put into this stage casing, then exploits in mineral building and leans on lower wall lower leaf, undercuts in Bottom of Stope, with The layer that undercuts falls ore deposit for scope of freedom carrying out horizontal fan shaped medium length hole explosion.
2. the mining methods of the inclined thick ore body of disk rock crusher, its feature in a kind of back production according to claim 1 It is, comprises the following steps:
S1:The setting of block structure parameter:The high 40m-60m in stage casing is set, nugget moves towards long 40m-50m, the wherein wide 8m- of studding 10m, the high 4m-6m of fore-set, using the flat polycrystalline substance of route type ore removal;
S2:Nugget is adopted accurate with cutting engineering:Level haulage tunnel and return aircourse are arranged in outside lower wall arteries and veins, stope raise arrangement Ore body lower wall direction is leaned in studding, from stope raise to driving segmentation connection roadway in disk direction on ore body, is respectively segmented connection roadway The vertical height difference 8m-10m in road, segmentation connection roadway by disk direction on ore body end to the pick of both sides mineral building have room neck, The contact The Small Well of a height of 4m-5m is dug upwards, then mineral building connection roadway is dug from contact The Small Well to both sides mineral building;The height difference of mineral building connection roadway 4m-5m digs drilling chamber connection roadway and drilling chamber, the height difference 4m- of each drilling chamber connection roadway from stope raise to both sides mineral building 5m;In Bottom of Stope, an ore removal route is tunneled every 6m-8m from level haulage gallery to mineral building, ore removal route is dug to ore body After upper disk ore-rock contact surface, then opened along orebody trend and cut lane, the high 2m-2.5m in cutting lane, wide and ore body higher slice working thickness Identical, long, both ends identical with mineral building length and room neck penetrate through;
S3:Higher slice is exploited and upper disk surrounding rock consolidation:Mining face and working space headed by cutting lane, first check upper armor rock Stability, sillar will be anchored, the upward armor rock of disk ore-rock contact line is with 15-30 ° of extrapolation along ore body built on the sand using anchor pole Angle perforating simultaneously loads ductule progress slip casting, advance reinforcement top country rock, each ductule direction of insertion keeping parallelism;In cutting lane Interior to tie row shallow bore hole to square ore body, hole depth 2.2m-2.8m, implements short delay explosion and falls ore deposit, exists per separate explosion ore body height 2.0m-2.5m;1/3 or so of this separate explosion ore amount is shoveled out by the ore removal route of Bottom of Stope, remainder, which stays in, to be adopted Armor rock on the standing platform and temporary support mineral building for continue up operation is provided in;In Stope face, new exposure is checked The grouting consolidation effect of the upper armor rock gone out, to local sillar built on the sand using anchor rod anchored, the direction of insertion of anchor pole is led with small The direction of insertion of pipe keeps vertical, the depth of anchor pole, which is subject to, anchors into ductule effective grouting area, then along newly exposing Ore-rock contact line continue up using small-lead-tube advanced slip-casting reinforce top country rock, be then further continued for ore body upward tie row it is shallow Hole explosion falls ore deposit, then passes through Bottom of Stope ore removal route ore removal;Above operation is repeated, until mineral building top fore-set position is arrived in exploitation Put, then play shallow blasting from bottom to top at twice into fore-set, it is 3m- to form width by fore-set explosion into peach-shaped, between peach-shaped ore pillar The wide opening funnel of 5m, upper stage casing bottom residual ore is slipped into this stage casing mineral building;Finally, will in Bottom of Stope ore removal route Whole ores under higher slice is adopted in mineral building shovel out;
S4:Lower leaf is exploited:In Bottom of Stope by the use of ore removal route as drilling drift, shallow bore hole is beaten into both sides ore body, upwards Layering dead zone direction short delay explosion forms the layer that undercuts of a height of 2.5-3m;Then in the drilling chamber of stope raise both sides In, fetch water flat fan shaped medium length hole to mineral building ore body, layer is then undercuted as the scope of freedom using bottom, short delay explosion, per separate explosion 2-4 artillery salvos hole, Bottom of Stope is fallen into after ore reduction, is shoveled out by Bottom of Stope ore removal route;
S5:Ore pillar recycles:At the fore-set position of stope raise both sides, driving returns back to top drilling chamber, and in the drilling chamber that returns back to top to Fetch water in fore-set flat fan shaped medium length hole;Stamped in studding in each mineral building connection roadway, drilling chamber connection roadway to or it is lower to parallel Shallow bore hole;Respectively it is segmented in connection roadway, stamps to fan shaped medium length hole, covering of the fan is parallel to disk ore-rock contact surface on ore body in studding;It is quick-fried Break respectively row's shallow bore hole above and below mineral building connection roadway, explosion in the studding that using segmentation millisecond detonating, first detonates by row and be oriented to both sides sky Area, each row's fan shaped medium length hole in the studding that and then detonates by row from upper disk to lower wall direction again, explosion are oriented to disk, then by The parallel shallow bore hole above and below drilling chamber connection roadway in quick-fried studding is queued, each row of horizontal fan in the fore-set that finally detonates from bottom to top by row Shape medium-length hole, explosion are oriented to lower part goaf;Ore pillar falls into both sides goaf bottom after crushing, shoveled out by ore removal route.
3. the mining methods of the inclined thick ore body of disk rock crusher, its feature in a kind of back production according to claim 1 It is, the inclination angle of inclined thick ore body is 55 ° -90 °, thickness 10m-25m.
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