CN106761912B - It is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods - Google Patents

It is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods Download PDF

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CN106761912B
CN106761912B CN201510798319.8A CN201510798319A CN106761912B CN 106761912 B CN106761912 B CN 106761912B CN 201510798319 A CN201510798319 A CN 201510798319A CN 106761912 B CN106761912 B CN 106761912B
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higher slice
ore
stope
lower wall
route
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CN106761912A (en
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汪为平
肖益盖
孙国权
陆玉根
陈兴
王星
杨家冕
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Sinosteel Maanshan General Institute of Mining Research Co Ltd
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Sinosteel Maanshan General Institute of Mining Research Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings

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  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
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  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention discloses it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, each is segmented(c)It is divided into higher slice(c1), lower leaf(c2), by higher slice(c1), lower leaf(c2)Merge into a segmentation(c)Exploitation, a step exploit higher slice first(c1), in higher slice higher slice(c1)After drift stoping, then exploit lower leaf(c2)Route ore body;The mode of one stop panel or two stop panel is selected to carry out back production in same panel horizontal direction, in a step higher slice(c1)Mineral building, lower leaf(c2)After the completion of mineral building back production, carry out consolidated fill, obturation reaches the back production for carrying out adjacent mineral building after curing strength immediately, realizes continuous exploitation, after the completion of a segmentation complete extraction, the unified layer that rises carries out higher slice drift stoping work, the quasi- quantities of adopting of two step pillar recoveries is reduced, primary shield topmast shield is reduced, increases primary filling height of lift, ore back production and pack effectiveness are improved, reduces mining cost.

Description

It is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods
Technical field
The present invention relates to, to route slicing and filling mining codes, the underground mine especially suitable for unstable formation fills in one kind Mining is filled out, is widely portable to the layering all-tailing cemented filling exploitation of the Underground Metallic Mines such as black, coloured.
Background technology
On to route stratified filling method be it is a kind of from bottom to top, slicing and the mining side filled in a manner of the route of tunnel Method.The method has the advantages that back production safety, the rate of recovery are high, dilution is low, is primarily adapted for use in:1. ore-rock is built on the sand or ore is opposite Firm mineral deposit;2. Ore body morphology is irregular, thickness change is big, the compound mostly mineral deposit containing horsestone of branch;3. earth's surface needs to protect The mineral deposit of shield.
The characteristics of method is slicing from bottom to top, the back production of each layering be after layered-liaison tunnel is tunneled, with point Layer overall height across pitch or capwise divide route, spacing admission passage mining.One step drift stoping finishes Tight filling immediately, so Afterwards again back production and fill two step routes, after the drift stoping sand off being entirely layered, then on drift stoping one layering. The method is most used early in the mine of Sweden part, China from 1984 Jinchuan deposit Ⅱ area Experiment in Introduction this method success since, It is promoted and applied in many mines, such as Shandong Gold Shandong Jiaojia, middle areas in Shandong Province mining industry Zhang Jia mining areas, Northern Huaihe River Anhui mining area.
The method is there are still certain limitation at present, such as:It is limited by stope arrangement and operating condition, can not realize big rule Mould is exploited;Mining technology is complicated, and it is big to adopt quasi- quantities;Two step mineral building back production must carry out in the obturation of a step back production Quasi- construction is adopted, security reliability is poor;Using two step back production, mine continuously exploitation etc. can not be realized;Stope Parameters are steady by ore-rock The restriction of solidity, stope support are of high cost;Charge stratifying height is small, can not realize big production capacity filling, and filling cost is high.
For example,《Modern Mineral》July in 2012, the 7th periodical was stepped on " on to route (layering) method of mining by the way of filling in the Huaibei The ore deposit at the beginning of Liu building copper and iron (gold) ore deposit belongs to 2010 is described in the application in mining area " to start to establish tailing-filled system, is adjusted Downhole production is laid out, introduce it is upper to route (layering) method of mining by the way of filling, the second half year in 2010 start to original goaf with New goaf has carried out consolidated fill.It facts have proved this method and have that back production safety, ore recovery ratio are high, the rate of dilution is low etc. and is excellent Point, but there is also following 3 problems:(1)Tight filling rate is difficult to reach design requirement, more drift stoping top plates to big thick ore body Management brings difficulty;(2)Lower wall arranges drop shaft, scraper inclined gallery engine request country rock relative securement.To breaking surrounding rock, it is necessary to adopt Take supporting measure;(3)It is required that mine locating is advanced, the scale form of ore body, engineering geological condition are found out, conceptual design could be integrated and be examined Consider, ensure its rationality that is involutory;(4)It is smaller to exploit production capacity, it is difficult to realize large scale mining.
Invention content
The purpose of the present invention aiming at it is upper at present to route stratified filling method production capacity it is low, adopt quasi- quantities greatly, work The problems such as skill is complicated, stope support is of high cost and two steps can not realize continuous exploitation, it is proposed that one kind is suitable for unstable rock Layer it is efficiently upper to route slicing and filling mining methods, it is intended to realize high-efficiency and continuous large scale mining, reduction cost of winning.
Above-mentioned purpose to realize the present invention, a kind of efficiently upper be layered to route for being suitable for unstable formation of the present invention are filled Mining methods are filled out, are arranged according to stope, along orebody trend direction, every 40~60m is divided into a stope, is drawn with every 50~60m It is excellent to be divided into a stope;One stope arranges 8~12 routes, and the width of route is 4~6m, and 6~9 m are a segmentation Highly;Disk drop shaft on being arranged outside the arteries and veins of disk on ore body, arranges lower wall drop shaft, stage casing lower wall main haulage roadway outside ore body lower wall arteries and veins It is arranged in outside the mineral ore of ore body lower wall, disk main haulage roadway is arranged on ore body outside the mineral ore of disk on stage casing.By each segmentation point For higher slice, lower leaf, the connection roadway along the pulse in the arrangement lower wall arteries and veins of the ore body lower wall side of higher slice, on the ore body of lower leaf Along the pulse connection roadway in the upper disk arteries and veins of disk side arrangement;Along the pulse ore removal connection roadway of the connection roadway as higher slice back production in lower wall arteries and veins, on Along the pulse ore removal connection roadway of the connection roadway as lower leaf back production in disk arteries and veins;On stage casing disk main haulage roadway by fill Kuang Chuanmailian lanes with Stage casing lower wall main haulage roadway communicates, and connection roadway gets in touch with ramp by Slice stoping along the pulse in lower wall arteries and veins and lower wall transport in stage casing is big Lane communicates, so as to form a complete transportation system.Direction of extraction of the present invention is still from bottom to top, to be layered overall height across pitch Or capwise divides route, spacing admission passage mining.From it is traditional on to unlike route stratified filling method, the present invention uses Mining type be:
1)A segmentation exploitation is merged into higher slice, lower leaf, a step is exploited higher slice, divided on higher slice first After layer drift stoping, supporting is first carried out, then exploit lower leaf to higher slice top plate or tunneling boring according to ore stability Route ore body;
2)According to the stability of ore in same panel horizontal direction, select the mode of one stop panel or two stop panel into Row back production after the completion of a step higher slice mineral building, lower leaf mineral building back production, carries out consolidated fill, it is strong that obturation reaches maintenance The back production of adjacent mineral building is carried out after degree immediately, realizes continuous exploitation, one is segmented after the completion of complete extraction, and the unified layer that rises carries out Slice drift actual mining to reduce the quasi- quantities of adopting of two step pillar recoveries, improves back production efficiency, reduces mining cost.
Higher slice uses the horizontal rock drilling of drill jumbo, and such as Boomer281 Fully-hydraulic drilling rigs, lateral aperture falls ore deposit;Lower point For layer drift stoping using lower to upright opening rock drilling drawing back, lateral caving, layer height can increase to 4.5m, reduce primary Topmast shield is protected, and the lower leaf back production explosion scope of freedom is more, improve blasting efficiency, reduce construction cost.Rendrock is selected Emulsion, detonation is using nonel tube segmentation detonation.
The above-mentioned height being each segmented is advisable with 7~8 m, is preferred with 7 m.
The more excellent parameter of stope structure is:Along orebody trend direction, a stope, a stope arrangement 10 are divided into per 50m Route, the width of route is 5m, and the height being each segmented is 7m, layer height 3.5m.
It is more than the nugget of 15m, the vertical orebody trend arrangement of stope for horizontal breadth, length of stope is the horizontal thickness of ore body Degree;When ore body horizontal breadth is excessive, multiple panels should be divided by the principle no more than 60m.
The present invention it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, using opposite Route Upward slicing all-tailing cemented filling mining methods are layered to route on the basis of cemented filling mining method on traditional Stope structure parameter optimization has been carried out, has simplified mining technique, reduce stope support quantities and has adopted quasi- quantities, so as to drop Low mining cost, filling height of lift are increased to 7~8m by 3 traditional~5m, improve pack effectiveness and mining production efficiency, It has ensured mining safety and the rate of extraction, has reduced ore dilution rate.Detailed technology Economic contrast such as the following table 1:
1 two kinds of mining methods technology and economy comparisons of table
Description of the drawings
Fig. 1 be the present invention it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods side view.
Fig. 2 be it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods vertical view.
Fig. 3 be it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods front view.
Reference numeral is:1- stage casings lower wall main haulage roadway;Disk main haulage roadway on 2- stage casings;It is got in touch with along the pulse in 3- lower wall arteries and veins Lane;Along the pulse connection roadway in the upper disk arteries and veins of 4-;The upper stage casing lower wall main haulage roadways of 5-;6- wears arteries and veins transportation roadway ore pillar;7- Slice stopings are got in touch with Ramp;8- lower wall drop shafts;The upper disk drop shafts of 9-;10- higher slice stopes;11- lower leaf stopes;12- fills ore deposit Chuan Mailian lanes;13- stope filling ventilation shafts;14- obturations;15- bodies to be dug up mine;16- lower leaf back production blastholes;S- stopes;b- Route;C- is segmented;c1Higher slice;c2Lower leaf.
Specific embodiment
To further describe the present invention, the present invention is described in further detail with reference to the accompanying drawings and examples.
Central China submarine volcano sections mineral deposit, mine engineering complicated geology, the grade of ore is low, and ore body inclines in slow Tiltedly, tilt distribution and ore interlayer is more, ore body are in direct contact that roof and floor country rock stability is poor, and upper disk roof fall is more serious, and Mining area periphery is mostly village and farmland, and surrounding enviroment are complicated.
Mine is used to the exploitation of route stratified filling method, Two step mining early period, per slice drift one stop panel, production Ability is about 3000t/d, is influenced and operating condition limits due to being arranged by stope, can not realize large scale mining, and every Layer is changed after slicing and filling immediately, causes two step mineral building back production difficulty larger.
In view of the above problems, the present invention carries out technological improvement to former mining methods, it is complete opposite route Upward slicing has been invented Tailing cemented filling mining codes.
As shown in Figure 1 the present invention it is a kind of be suitable for unstable formation efficiently on bow to route slicing and filling mining methods View simultaneously found out with reference to Fig. 2, Fig. 3, stope structure parameter that the present invention uses, adopt quasi- engineering, process for stoping is respectively:
(1)Stope structure parameter:It is arranged according to stope, along orebody trend direction, is divided into a stope S per 50m, one Stope S arranges 10 route b, and the width of route b is 5m, and 7 m are the height of a segmentation c;By each segmentation c point for upper point Layer c1, lower leaf c2, divide higher slice and the opposite drift stoping of lower leaf, higher slice c1, lower leaf c2Height be all 3.5m.
(2)Adopt quasi- engineering:Disk drop shaft 9 on being arranged outside the arteries and veins of disk on ore body, arranges lower wall drop shaft outside ore body lower wall arteries and veins 8, stage casing lower wall main haulage roadway 1 is arranged in outside the mineral ore of ore body lower wall, and disk main haulage roadway 2 is arranged in the ore deposit of disk on ore body on stage casing Outside arteries and veins, upper stage casing lower wall main haulage roadway 5 is arranged in outside the mineral ore of a stage casing ore body lower wall.In higher slice c1Ore body lower wall Along the pulse connection roadway 3 in the arrangement lower wall arteries and veins of side, in lower leaf c2Ore body on connection roadway 4 along the pulse in the upper disk arteries and veins of disk side arrangement; Connection roadway 3 is used as higher slice c along the pulse in lower wall arteries and veins1The ore removal connection roadway of back production, connection roadway 4 is used as lower leaf along the pulse in upper disk arteries and veins c2The ore removal connection roadway of back production;Dress Kuang Chuanmailian lanes 12 are arranged in the lower section for wearing arteries and veins transportation roadway ore pillar 6, disk main haulage roadway on stage casing 2 are communicated by filling Kuang Chuanmailian lanes 12 with stage casing lower wall main haulage roadway 1, and connection roadway 3 is joined by Slice stoping along the pulse in lower wall arteries and veins Network ramp 7 is communicated with stage casing lower wall main haulage roadway 1, so as to form a complete transportation system;Among each stope lower wall One filling of location arrangements and the ventilation shaft 13 of stope return air, as filling piping arrangement and the main thoroughfare of stope return air.
(3)Process for stoping:By higher slice c1, lower leaf c2A segmentation c exploitation is merged into, a step is exploited point first Layer c1, in higher slice higher slice c1After drift stoping, first higher slice top plate or tunneling boring are carried out according to ore stability Supporting, then exploit lower leaf c2Route ore body;According to the stability of ore in same panel horizontal direction, select one stop panel or The mode of person's two stop panel carries out back production, in a step higher slice c1Mineral building, lower leaf c2After the completion of mineral building back production, carry out cementing Filling, obturation reach the back production for carrying out adjacent mineral building after curing strength immediately, realize continuous exploitation, a segmentation complete extraction After the completion, the unified layer that rises carries out higher slice drift stoping work.
Higher slice c1Using the horizontal rock drilling of drill jumbo, lateral aperture falls ore deposit;Lower leaf c2Drift stoping is using lower to upright opening Rock drilling drawing back, lateral caving.
Process for stoping is specially:
A. driling explosion:Using Boomer281 Fully-hydraulic drilling rigs, seven teeth drill bits of D45mm, drill steel model are selected R38/T38-H35-R32, length 3.7m, higher slice c1Ore deposit, borehole depth 3.7m are fallen using lateral aperture.Lower leaf c2Under To vertical parallel hole-lower leaf back production blasthole 16, hole depth 3.5m, lateral caving, drawing back once collapses 4 rounds, about 6m. Rendrock selects emulsion, and detonation is using nonel tube segmentation detonation, and it is one section to fall ore deposit eye, and periphery control eye is two Section.Higher slice c1Divide 5 sections of detonations, wherein single order keyhole and second order keyhole is respectively one section, and reliever is divided to two sections of detonations, periphery One section of eye.Lower leaf c2Back production, side eye and falls ore deposit blasthole and is divided to two sections of detonations, and adjacent stope or obturation is protected not to be destroyed, Strengthen the stability of stope and reduce the rate of dilution.
B. stope ventilation:Pressure differential is formed using mine ventilation system to complete.It is fresh distinguished and admirable through stage casing lower wall fortune Disk main haulage roadway 2, dress Kuang Chuanmailian lanes 12, Slice stoping contact ramp 7 enter stope in defeated main entry 1, stage casing, divide in cleaning Waste air after layer stope 10, lower leaf stope 11, upper stage casing return air system is discharged to through stope filling ventilation shaft 13 In system.
C. roof control:Divide higher slice c in one segmentation c1, lower leaf c2Two opposite back production of layering, higher slice c1Back production When, anchor pole or anchor net tunneling boring supporting must be carried out to Stope roof.Far from tomography or country rock in stope, using anchor pole branch Shield uses bolting with wire mesh mode at tomography or country rock.Lower leaf c2The observation to top plate is strengthened in back production before each ore removal, Deform or supporting destroy when should carry out consolidation process immediately.
D. ore drawing in stope:Stope broken ore is discharged into lower wall through dress Kuang Chuanmailian lanes 12 after being filled by WJD-2 scrapers mechanical shovel and slips Well 8 is directly discharged into direct route drop shaft in the arteries and veins in stope, then the vibration ore dumping machine from being located at drop shaft bottom leads to mine car ore drawing It crosses locomotive haulage and is transported to main shaft.To reduce impact of the ore to vibrating bottom ore drawing machine and drop shaft, lower wall drop shaft 8, upper disk slip Well 9 should remain full of state.Each panel is equipped with a scraper, and the ore that stope is fallen is filled by scraper mechanical shovel, is worn through filling ore deposit Mai Lian lanes 12 are transported to lower wall drop shaft 8 and unload.The control of ore removal lumpiness, hereinafter, more than 400mm, carries out two in 400mm in stope Separate explosion processing.
(4)Stope filling:Admission passage filling can be carried out by proportioning after the completion of all filling preparations, continuously filled necessary It is well-organized.Station filler reserve status is prepared according to earth's surface filling slurry and when admission passage filling volume determines continuously to fill Between.One step adopts the 28d compression strength of admission passage filling body 14 not less than 1.0MPa, and two steps adopt route and carry out Non cemented filling, stope First, two steps adopt route and carry out top dressing filling 28d compression strength not less than 1.5 MPa, face thickness 40cm are poured, in favor of higher slice The walking of trackless equipment during back production.All admission passage fillings finish rear enclosed connecting taxiway, with same method charge stratifying connecting taxiway, system One liter of layer carries out higher slice drift stoping work, the body to be dug up mine 15 on back production top.
Coordinate efficient mechanical rock drilling shovel dress equipment by improving process for stoping, mine is after using the method, production capacity It being improved by original 3000t/d to 5000t/d, the rate of recovery improves 1%, and dilution reduces 2%, and production cost reduces about 20%, Achieve extraordinary technology, economic effect.

Claims (5)

1. it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, arranged according to stope, along ore body Direction is moved towards, every 40~60m is divided into a stope(S), stope (S) 8~12 routes of arrangement(b), route(b)Width It spends for 4~6m;Disk drop shaft on being arranged outside the arteries and veins of disk on ore body(9), lower wall drop shaft is arranged outside ore body lower wall arteries and veins(8), stage casing Lower wall main haulage roadway(1)It is arranged in outside the mineral ore of ore body lower wall, disk main haulage roadway on stage casing(2)It is arranged in the mineral ore of disk on ore body Outside, it is characterised in that:One segmentation in the stage casing(c)Height for 6~9 m, and each is segmented(c)It is divided into higher slice (c1), lower leaf(c2), in higher slice(c1)Ore body lower wall side arrangement lower wall arteries and veins in connection roadway along the pulse(3), in lower leaf (c2)Ore body on connection roadway along the pulse in the upper disk arteries and veins of disk side arrangement(4);Along the pulse connection roadway in lower wall arteries and veins(3)As higher slice (c1)The ore removal connection roadway of back production, connection roadway along the pulse in upper disk arteries and veins(4)As lower leaf(c2)The ore removal connection roadway of back production;Stage casing Upper disk main haulage roadway(2)By filling Kuang Chuanmailian lanes(12)With stage casing lower wall main haulage roadway(1)It communicates, is got in touch with along the pulse in lower wall arteries and veins Lane(3)Ramp is got in touch with by Slice stoping(7)With stage casing lower wall main haulage roadway(1)It communicates, so as to form a complete fortune Defeated system;Its mining type is:
1)By higher slice(c1), lower leaf(c2)Merge into a segmentation(c)Exploitation, a step exploit higher slice first(c1), Higher slice(c1)After drift stoping, supporting is first carried out, then open to higher slice top plate or tunneling boring according to ore stability Adopt lower leaf(c2)Route ore body;
2)According to the stability of ore in same panel horizontal direction, the mode of one stop panel or two stop panel is selected to be returned It adopts, in a step higher slice(c1)Mineral building, lower leaf(c2)After the completion of mineral building back production, consolidated fill is carried out, obturation reaches maintenance The back production of adjacent mineral building is carried out after intensity immediately, realizes continuous exploitation, one is segmented after the completion of complete extraction, and the unified layer that rises carries out Higher slice drift stoping works.
2. it is as described in claim 1 it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, It is characterized in that:Higher slice(c1)Using the horizontal rock drilling of drill jumbo, lateral aperture falls ore deposit;Lower leaf(c2)Drift stoping using it is lower to Upright opening rock drilling drawing back, lateral caving.
3. it is as claimed in claim 1 or 2 it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, It is characterized in that:Each segmentation(c)Height be 7~8 m.
4. it is as claimed in claim 3 it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, It is characterized in that:Along orebody trend direction, a stope is divided into per 50m(S), stope (S) 10 routes of arrangement(b), into Road(b)Width be 5m;The height being each segmented is 7m, layer height 3.5m.
5. it is as claimed in claim 3 it is a kind of be suitable for unstable formation efficiently on to route slicing and filling mining methods, It is characterized in that:Along orebody trend direction, a stope is divided into per 50m(S), stope (S) 10 routes of arrangement(b), into Road(b)Width be 5m;The height being each segmented be 7~8m, higher slice(c1)It is highly 3.5m, lower leaf(c2)Highly it is 3.5 ~4.5m.
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