CN106121643A - The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling - Google Patents
The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling Download PDFInfo
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- CN106121643A CN106121643A CN201610793168.1A CN201610793168A CN106121643A CN 106121643 A CN106121643 A CN 106121643A CN 201610793168 A CN201610793168 A CN 201610793168A CN 106121643 A CN106121643 A CN 106121643A
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- Prior art keywords
- retaining wall
- back production
- ore deposit
- ore
- filling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Abstract
The present invention is a kind of reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling, relate to the technical field of underground mine exploitation, for solving sublevel drilling stage open stope afterwards filling method when exploiting weak-walled ore body, technical problem that the loss of Ore is bigger with dilution and design.The step of the method is as follows: be a step stope and two step stopes by ore body division, and carry out ore body adopt standard, cutting；A step stope described in back production, and the back production environment of the reserved retaining wall ore deposit described two step stopes of structure, a described step stope barnyard back production afterwards consolidated fill；Two step stopes described in back production and described retaining wall ore deposit filling respectively.Protect rib build two step stope environment by reserved, again by the back production connection roadway back production retaining wall ore deposit of reasonable Arrangement two step stope, thus decrease the open-assembly time of unstable rock, not only ensure that rational stoping strength but also fully reclaimed nearly country rock Ore, reduce loss and the dilution of Ore.
Description
Technical field
The present invention relates to the technical field of underground mine exploitation, especially relate to a kind of reserved retaining wall ore deposit two step nested groups
Close the method for mining by the way of filling.
Background technology
For high value, country rock steadiness condition thickness poor, middle～thick big and moderately stable in " three times " and scenic spot
For the enhanced recovery efficient, extensive in above mineral deposit, sublevel drilling stage open stope afterwards filling method is a kind of proper adopting
Ore deposit method.
Sublevel drilling stage open stope afterwards filling method is on the basis of being the stage by ore body division, then by divided stages is
Segmentation, along orebody trend direction, is divided into bar mineral building and ore pillar, room of first digging up mine, post of digging up mine afterwards, and processes goaf simultaneously.
Strong to the inclination angle adaptability relatively Stage open stoping of Ore and country rock steadiness and ore body, range is wide, flexibly
Property is big；But when exploiting weak-walled ore body, the loss of Ore is bigger with dilution.
Summary of the invention
It is an object of the invention to provide a kind of reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling existing to solve
Present in technology, sublevel drilling stage open stope afterwards filling method is when exploiting weak-walled ore body, and the loss of Ore is with lean
Change bigger technical problem.
The present invention is a kind of reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling, comprises the steps:
(1) be a step stope and two step stopes by ore body division, and carry out ore body adopt quasi-cutting；
(2) a step stope described in back production, and the back production environment of the reserved retaining wall ore deposit described two step stopes of structure, described
One step stope barnyard back production afterwards consolidated fill；
(3) two step stopes described in back production and described retaining wall ore deposit filling respectively.
Further, in step (two), a step stope described in back production uses the mining of sublevel drilling stage open stope afterwards filling
Method.
Further, in step (three), described in back production, two step stopes use filling-up method.
Further, in described step (), the step adopting quasi-cutting engineering of ore body includes:
Lane along the pulse in level haulage lane starts to tunnel successively ore removal lane, stage casing and arteries and veins, and ore removal lane, described stage casing and stope
Ore pass through；
At the outer connection roadway of the horizontally disposed arteries and veins of polycrystalline substance ore removal and lower wall People's Bank of China equipment raise, the outer connection roadway of described arteries and veins is with described
Equipment raise UNICOM of lower wall People's Bank of China, tunnels a described step stope by the outer connection roadway of described arteries and veins and described lower wall People's Bank of China equipment raise
Sublevel drilling gallery；
On each described sublevel drilling gallery is close, one end driving of dish cuts crosscut and slot raise, in described cutting
Drilling upper centripetal deep hole in crosscut, forms cutting groove with described slot raise for scope of freedom explosion；
Driving ore pass and Mai Nei People's Bank of China ventilation shaft by the way in described two step stopes, described Mai Nei People's Bank of China ventilation shaft connection
Logical upper stage casing and lower stage casing, described direct route ore pass and described stage casing ore removal lane UNICOM, tunnel out from polycrystalline substance ore removal level
Kuang Chuanmai lane and ore removal connection roadway.
Further, a step stope, to be undercuted for the scope of freedom by lane, ore deposit, forms first and undercuts layer；One step stope is reserved
Retaining wall ore deposit include that the first L-type retaining wall ore deposit, the second L-type retaining wall ore deposit, Article 1 banding pattern entirety retaining wall ore deposit and Article 2 banding pattern are overall
Retaining wall ore deposit；Described the first of the upper dish layer that undercuts reserves described first L-type retaining wall ore deposit, and described first undercuts each layering point more than layer
Do not reserve described Article 1 banding pattern entirety retaining wall ore deposit；Described the first of the lower wall layer that undercuts reserves described second L-type retaining wall ore deposit, described
Described Article 2 banding pattern entirety retaining wall ore deposit is reserved in the first each layering more than layer that undercuts respectively.
Further, in the exploitation process of a described step stope, personnel and equipment are entered by lower wall People's Bank of China equipment raise
Enter each described sublevel drilling gallery；Dig in each sublevel drilling gallery to fan shaped medium length hole explosion, Luo Kuang with rock drill.
Further, during described two step stope upward horizontal slice back production, it is horizontally formed second at polycrystalline substance ore removal
Undercut layer, constructs reinforced concrete artificial bottom layer at described second layer that undercuts, or described second undercut layer use filling aggregate and
Binder Materials constructs consolidated fill layer.
Further, described second of two step stopes described in the back production layer that undercuts comprises the steps:
(A) the described first L-type retaining wall ore deposit that in back production, tray bottom structure is reserved, uses tailings high intensity glue after back production
Knot filling, forms " V " type nesting combination filling structure；
(B) in the level of undercuting with ore removal connection roadway in stope as the scope of freedom, with described ore removal Chuan Mai lane for back production border, shape
Become parallelogram sturcutre back production region, use quadrilateral structure back production region described in shallow bore hole method back production, build parallelogram
Subregion filling structure；
(C) the described second L-type retaining wall ore deposit that back production lower wall polycrystalline substance is reserved, uses tailings high intensity glue after back production
Knot filling, forms " K " type nesting combination filling structure.
Further, described second of two step stopes described in back production undercut layering more than layer time comprise the steps:
(I) use Article 1 banding pattern entirety retaining wall ore deposit described in shallow bore hole method back production, after back production, use tailings high intensity glue
Knot filling；
(II) two step stopes described in shallow bore hole method back production are used；
(III) use Article 2 banding pattern entirety retaining wall ore deposit described in shallow bore hole method back production, after back production, use tailings high intensity glue
Knot filling.
Further, foundation is left in stage casing, and described foundation carries out back production after upper stage casing and the back production of lower stage casing.
Compared with prior art, the invention have the benefit that
Two step stope environment are built by the reserved rib that protects of a step stope, then by reasonable Arrangement two step stope
Back production connection roadway back production retaining wall ore deposit, thus decrease the open-assembly time of unstable rock.Meanwhile, by the two organic knots of step stope
Close, not only ensure that rational stoping strength but also fully reclaimed nearly country rock Ore, decrease the Ore damage that unstable rock causes
Lose and dilution.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of section of the embodiment of the reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling that Fig. 1 provides for the present invention
Front view (the A-A profile of Fig. 3)；
Fig. 2 is the top view (the B-B profile of Fig. 1) of polycrystalline substance level in the embodiment shown in Fig. 1；
Fig. 3 is the top view (the C-C profile of Fig. 1) of stage casing level in the embodiment shown in Fig. 1；
Fig. 4 is the side view (the D-D profile of Fig. 1) of a step stope mining in the embodiment shown in Fig. 1；
Fig. 5 is the side view (the E-E profile of Fig. 1) of two step stope minings in Fig. 1.
Reference:
At the bottom of 1-mono-step stope 2-bis-step stope 3-vacation and Fructus Persicae type ore pillar
4-ore removal Chuan Mai Xiang5-Shou Kuang lane 6-ore removal connection roadway
The 7-ore pass 8-Mai Nei People's Bank of China outer connection roadway of ventilation shaft 9-arteries and veins
Along the pulse lane 12-direct route ore pass in the 11-arteries and veins of 10-level haulage lane
13-15-back production lane, ore removal lane, People's Bank of China ventilation shaft 14-stage casing by the way
16 lower wall People's Bank of China equipment raise 17-fan shaped medium length hole 18-sublevel drilling gallerys
19-broken ore 20-high intensity cemented fill
21-low-intensity cemented fill 22-the first L-type retaining wall ore deposit
23-the second L-type retaining wall ore deposit 24-" V " type nesting combination filling structure
25-" K " type nesting combination filling structure 26-Article 1 banding pattern entirety retaining wall ore deposit
27-Article 2 banding pattern entirety retaining wall ore deposit 28-scraper
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
A kind of section of the embodiment of the reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling that Fig. 1 provides for the present invention
Front view (the A-A profile of Fig. 3)；Fig. 2 is that (B-B of Fig. 1 cuts open for the top view of polycrystalline substance level in the embodiment shown in Fig. 1
Face figure)；Fig. 3 is the top view (the C-C profile of Fig. 1) of stage casing level in the embodiment shown in Fig. 1；Fig. 4 is the reality shown in Fig. 1
Execute the side view (the D-D profile of Fig. 1) of a step stope mining in example；Fig. 5 is the side view of two step stope minings in Fig. 1
(the E-E profile of Fig. 1).
As it is shown in figure 1, the reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling that the present embodiment provides, including walking as follows
Rapid: ore body division is step stope 1 and two step stopes 2 by (one), and carry out ore body adopt quasi-cutting；(2) back production one step
Suddenly stope 1, and reserved retaining wall ore deposit builds the back production environment of two step stopes 2, and a step stope 1 barnyard back production is the most cementing fills
Fill out；(3) back production two step stope 2 and retaining wall ore deposit filling respectively.
It should be noted that the retaining wall ore deposit mentioned in the present embodiment refers to the ore deposit contacted with country rock that exploitation process stays
Body.
Mineral deposit level interval 40～60m, 50 °～90 ° of the slanting angle of ore body, as ore body horizontal breadth ＜ 30m, stope is along ore body
Moving towards to arrange, a length of 40～50m, width is orebody thickness, depending on orebody thickness back production step by step.As ore body horizontal breadth >=30m
Time, the vertical orebody trend of stope arranges, is divided into two step stopes, a step stope 1 wide 12～15m, height of lift 10～
15m；Two step stopes 2 wide 10～13m.
One step stope 1 barnyard back production afterwards consolidated fill, the abundant back production of beneficially two step stopes 2.
The mining environment of two step stopes 2 is built by the reserved rib that protects of a step stope 1, then by reasonable Arrangement two step
The back production connection roadway back production retaining wall ore deposit of rapid stope 2, thus reduce the open-assembly time of unstable rock.By the two organic knots of step stope
Close, not only ensure that rational stoping strength but also fully reclaimed nearly country rock Ore, decrease the Ore damage that unstable rock causes
Lose and dilution.
The present embodiment be suitable for high value in " three times " and scenic spot, country rock steadiness condition thickness poor, middle～thick big and
The enhanced recovery efficient, extensive in the above mineral deposit of moderately stable, can effectively control ground settlement and rock moves, and is greatly promoted back production peace
Whole process degree, significantly reduces back production lean damage index, it is achieved the lean damage efficient, micro-of ore body, safe working.It should be noted that this reality
The middle thick mineral deposit in Shi Lizhongti road refers to that thickness mineral deposit between 15～30 meters, thick large ore deposit refer to that thickness is more than the ore deposit of 50 meters
Bed, so, middle thickness～the thick big mineral deposit i.e. thickness mineral deposit more than 15 meters.
On the basis of above-described embodiment, concrete, in step (two), back production one step stope 1 uses the sublevel drilling stage
Open stope afterwards filling mining method.
One step stope 1 barnyard back production afterwards consolidated fill, closes each ore removal contact road junction and other goaf before filling
Outlet, sets up filter pipe, imports filling pipe from upper stage casing and carries out filling, and the cement-sand ratio intensity of filler is 1～1.5MPa.One
Step goaf filling is complete, and body to be filled reaches some strength, after meeting two step process for stoping requirements, can start two steps
Stope 2 back production.
As it is shown in figure 5, stage casing refers to the part ore body between back production lane 15 and ore removal lane, stage casing 14, stage casing is relative to back production
Part ore body above lane 15 is lower stage casing, and accordingly, the part ore body above back production lane 15 is relative to lower stage casing
Stage casing.
Retaining wall ore deposit reserved by one step stope 1, uses sublevel drilling stage open stope afterwards filling mining method back production, both remained
The advantage that sublevel drilling stage open stope afterwards filling method production capacity is big, compensate for again it to unstable rock and ore body shape simultaneously
The inferior position of state bad adaptability.
On the basis of above-described embodiment, concrete, in step (three), back production two step stope 2 uses upward horizontal slice
The method of mining by the way of filling.
During filling-up method back production, work surface horizontal slice back production from bottom to top, each layering with mining,
Ore removal, filling process circulation work, obturator safeguards upper lower burrs country rock, and as the work platforms adopted on continuing.Construction technology
Simply, adopt accurate and cutting work difficulty is low, and be not easily formed over-extraction or owe to dig, it is possible to the loss realizing production ore is little,
The rate of dilution is low.
As shown in Figure 3 and Figure 4, on the basis of above-described embodiment, concrete, in step (), ore body adopts quasi-cutting work
The step of journey includes: lane 11 along the pulse in level haulage lane 10 starts to tunnel successively ore removal lane, stage casing 14 and arteries and veins, and stage casing ore removal
Lane 14 is through with the ore pass 7 of stope；At the outer connection roadway 9 of the horizontally disposed arteries and veins of polycrystalline substance ore removal and lower wall People's Bank of China equipment raise 16,
The outer connection roadway 9 of arteries and veins and equipment raise 16 UNICOM of lower wall People's Bank of China, tunnel a step by the outer connection roadway 9 of arteries and veins and lower wall People's Bank of China equipment raise 16
The sublevel drilling gallery 18 of stope 1；Before substoping, on each sublevel drilling gallery 18 is close, one end driving cutting of dish is horizontal
Lane and slot raise, Drilling upper centripetal deep hole in cutting crosscut, form cutting groove with slot raise for scope of freedom explosion；Two
Driving ore pass 12 and Mai Nei People's Bank of China's ventilation shaft 8 by the way in step stope 2, in ventilation shaft 8 UNICOM of Mai Nei People's Bank of China stage casing and lower in
Section, by the way ore pass 12 and ore removal lane 14, stage casing UNICOM, from polycrystalline substance ore removal level driving ore removal Chuan Mai lane 4 and ore removal contact
Lane 6.
It should be noted that stope bottom structure ore removal level Concrete false bottom water before complete long and medium hole drilling and
End kerve work.
As shown in Figure 4, step stope 1 segment blast from top to bottom falls ore deposit, and concrete, blasting process is: use powder charge
Device filling bulk granular nitrolite, big gun hole total length is laid primacord, is installed msdelayed light emission Nonel detonator in big gun aperture and carry out
Compound explosion, every tier hole is that the identical section of detonating is other, and takes multiple rows of same segmented mode, for the scope of freedom and compensates sky with cutting groove
Between carry out explosion, every segmentation divides the 2～3 separate explosions ore deposit that falls complete.Integral backstopping order is that upper dish is to the most lower point of lower wall, upper segmentation
Section drawing back.
As in figure 2 it is shown, broken ore 19 uses scraper to fill ore deposit from moat ditch polycrystalline substance, by ore removal connection roadway and ore removal
Chuan Mai lane 4, pours ore pass 7 in arteries and veins into by Ore.As it is shown on figure 3, Ore is transferred to electric locomotive from ore pass 7, gone out by stage casing
Lane, ore deposit 14 and level haulage lane 10, be transported to main chute and be promoted to earth's surface.
Adopting quasi-engineering in the ore body completing development work, the well lane engineering that driving is necessary, is a step by ore body division
Rapid stope 1 and two step stopes 2, and solve a step stope 1 and the People's Bank of China of two step stopes 2, ventilate, transport, filling etc. is asked
Topic.Cutting engineering, in completing mining preparation work ore body, is tunneled slot raise and cutting tunnel, and is formed the excavation of necessity.
In sum, adopt standard, every preparation has been carried out in the common exploitation for ore body of cutting.
As in figure 2 it is shown, on the basis of above-described embodiment, concrete, a step stope 1 is to be drawn for the scope of freedom by lane, ore deposit 5
The end, form first and undercut layer；The reserved retaining wall ore deposit of one step stope 1 include first the 22, second L-type retaining wall ore deposit, L-type retaining wall ore deposit 23,
Article 1, banding pattern entirety retaining wall ore deposit 26 and Article 2 banding pattern entirety retaining wall ore deposit 27；The first of the upper dish layer that undercuts is reserved the first L-type and is protected
Wall ore deposit 22, Article 1 banding pattern entirety retaining wall ore deposit 26 is reserved in the first each layering above layer that undercuts respectively；The first of lower wall undercuts layer
Reserved second L-type retaining wall ore deposit 23, Article 2 banding pattern entirety retaining wall ore deposit 27 is reserved in the first each layering more than layer that undercuts respectively.
Utilize and undercuted for the scope of freedom by lane, ore deposit 5, doubled as rock drilling gallery by lane, ore deposit 5, after completing long and medium hole drilling, deep in carrying out
Hole explosion forms bilateral or unilateral moat ditch polycrystalline substance.The Ore of explosion falls into moat ditch polycrystalline substance, leave after part Ore with
This polycrystalline substance filled and led up is the scope of freedom, uses shallow bore hole to undercut to back production border, and undercut height 2.5～3m.Then at the layer that undercuts
Construct the false end as shown in Figure 1 and Fructus Persicae type ore pillar 3, support above-mentioned moat ditch polycrystalline substance.
As in figure 2 it is shown, the first of the upper dish layer that undercuts reserves the first L-type retaining wall ore deposit 22 after step stope 1 back production, lower wall
First layer that undercuts reserves the second L-type retaining wall ore deposit 23, the first L-type retaining wall ore deposit 22 and thickness range in the second L-type retaining wall ore deposit 23
Think 2～5m.In addition the first L-type retaining wall ore deposit 22 contacts with country rock in the second L-type retaining wall ore deposit 23 the most respectively with two step stope 2
Ore body constitute big L-type retaining wall ore deposit, as shown in Figure 2.Article 1 is reserved in each layering that the first of upper dish undercuts more than layer respectively
Banding pattern entirety retaining wall ore deposit 26；Article 2 banding pattern entirety retaining wall ore deposit 27 is reserved in each layering that the first of lower wall undercuts more than layer respectively,
The thickness in the strip-type entirety retaining wall ore deposit that upper lower burrs is reserved can be 2～3m.
First the 22, the second L-type retaining wall ore deposit, L-type retaining wall ore deposit 23, first reserved at upper dish and lower wall by a step stope 1
Strip-type entirety retaining wall ore deposit 26 and Article 2 banding pattern entirety retaining wall ore deposit 27, make a step stope 1 use nested with two step stopes 2
The mode of combination is arranged, it is possible to reduce first undercut layer exposed area, strict control stope mining border, additionally it is possible in reduction
Lower wall country rock is caving and increases dilution or cause the situation of ore losses to occur because of the non-avalanche of upper lower burrs Ore.
Without tunneling supporting lane, it is few to adopt quasi-quantities, consolidates the feature of condition difference for upper lower burrs country rock, takes reserved rank
Section barnyard stope entirety retaining wall ore deposit maintains stablizing of stope, it is not necessary to dish driving supporting lane in segmentation, it is not required that enter upper dish
Row long anchor cable pre support, greatly reduces and adopts quasi-engineering and support engineering amount.
On the basis of above-described embodiment, concrete, in the exploitation process of a step stope 1, personnel and equipment pass through
Lower wall People's Bank of China equipment raise 16 enters each sublevel drilling gallery 18；Dig in each sublevel drilling gallery 18 to sector with rock drill
Medium-length hole 17 explosion, Luo Kuang.
Personnel and equipment enter each sublevel drilling gallery 18 by lower wall People's Bank of China equipment raise 16.Concrete, can use
To fan shaped medium length hole 17 on YGZ-90 rock drill (joining sledge type stand) chisel, aperture, big gun hole 60～65mm, array pitch 1.2～1.4m,
Bottom hole pitch 1.9～2.5m.
Falling ore deposit to fan shaped medium length hole 17 explosion on Cai Yonging, the back production of Ore is in hgher efficiency, and workman need not enter continuously
Enter barnyard and carry out driling explosion operation, reduce the working strength of workman.Meanwhile, reduction ore loss ratio is also helped.
On the basis of above-described embodiment, concrete, during two step stope 2 upward horizontal slice back production, at polycrystalline substance
Ore removal is horizontally formed second and undercuts layer, constructs reinforced concrete artificial bottom layer at second layer that undercuts, or uses fill at second layer that undercuts
Fill out aggregate and Binder Materials constructs consolidated fill layer.
During two step stope 2 upward horizontal slice back production, it is horizontally formed second at polycrystalline substance ore removal and undercuts layer, specifically
, second undercuts layer height 3.5～4m, undercuts at the bottom of steel concrete vacation thick for layer pouring 0.5m second, or cement-sand ratio be 1:4,
Thickness is the consolidated fill layer of 2～2.5m.
Second layer that undercuts constructs reinforced concrete artificial bottom layer, or uses filling aggregate and Binder Materials structure at second layer that undercuts
Build consolidated fill layer, it is possible to reduce filler and be mixed into the situation appearance of Ore, thus reduce the rate of dilution of production ore.
On the basis of above-described embodiment, concrete, the second of back production two step stope 2 layer that undercuts comprises the steps:
(A) the first L-type retaining wall ore deposit 22 that in back production, tray bottom structure is reserved, uses tailings high intensity consolidated fill, shape after back production
Become " V " type nesting combination filling structure 24, as shown in Figure 2；(B) in the level of undercuting with ore removal connection roadway 6 in stope as the scope of freedom,
With ore removal Chuan Mai lane 4 for back production border, form parallelogram sturcutre back production region, use shallow bore hole method back production quadrilateral structure to return
Territory, exploiting field, builds parallelogram subregion filling structure, as shown in Figure 2；(C) the second L-type that back production lower wall polycrystalline substance is reserved
Retaining wall ore deposit 23, uses tailings high intensity consolidated fill after back production, form " K " type nesting combination filling structure 25, such as Fig. 2 institute
Show.
It should be noted that the high intensity consolidated fill mentioned in the present embodiment refers to that the cement-sand ratio intensity of filling is more than 2
～3MPa, corresponding low-intensity refers to that the cement-sand ratio intensity of filling is less than 1MPa.As it is shown in figure 1, a step stope 1 is high intensity
Cemented fill 20 filling, two step stopes 2 are low-intensity cemented fill 21 filling.
The one reserved retaining wall ore deposit with the two mutual structure environment stopes of step stope 2 of step stope 1, by two step stopes 2
Back production is given to horizontal slice stope reasonable Arrangement back production connection roadway.
The nested combinative structure of upper lower burrs independence is that two step polycrystalline substance back production construct good working environment, it is ensured that
Stoping operation is safe and reliable, and advantageously reduces the open-assembly time of unstable rock, both ensure that rational stoping strength
The most fully reclaim nearly country rock Ore, decrease the ore dissipation and dilution that unstable rock causes, the most rationally.
On the basis of above-described embodiment, concrete, back production two step stope 2 second undercut layering more than layer time include
Following steps: (I) uses shallow bore hole method back production Article 1 banding pattern entirety retaining wall ore deposit 26, use after back production that high intensity is cementing fills
Fill out；(II) shallow bore hole method back production two step stope 2 (III) is used to use shallow bore hole method back production Article 2 banding pattern entirety retaining wall ore deposit 27, back production
After use tailings high intensity consolidated fill.
Second undercut slicing more than layer time, a reserved upper dish Article 1 banding pattern entirety retaining wall ore deposit of step stope 1
26 and lower wall Article 2 banding pattern entirety retaining wall ore deposit 27, returned by the connection roadway of reasonable Arrangement two step upward horizontal slice
Adopt.
Two step stope 2 exploitation processes dig shallow eye with air-feed leg drill fall ore deposit, aperture, big gun hole Ф 40mm.When use on to
Shallow eye fall ore deposit time, hole depth 2m, slicing height 2m, maximum empty heights of roofs 4m, empty heights of roofs 2m after filling；When using level eye
Shallow fall ore deposit time, hole depth 3m, slicing height 3m, maximum empty heights of roofs 4m, empty heights of roofs 1m after filling.No. 2 rock explosive medicines
Volume explosion, msdelayed light emission Nonel detonator detonates, and falls Ore scraper 28 ore removal or artificial ore removal.
Slicing is complete and ore removal complete after carry out not consolidated fill with classified tailings, increase ore pass 12 He by the way before filling
People's Bank of China's ventilation shaft 13 by the way, from stope top, courtyard transfers filling pipe filling, and after filling, the drainage time through 2～3 days is i.e. opened
Begin next layering back production.
Upper dish Article 1 banding pattern entirety retaining wall ore deposit 26 and integraty retaining wall ore deposit, lower wall Article 2 banding pattern entirety retaining wall ore deposit 27
Completely cut off the unstable surrounding rock at each segmentation of a step stope 1, advantageously reduce the open-assembly time of unstable rock, maintain stope
Stablize, it is not necessary in segmentation dish driving supporting lane, not only ensure that rational stoping strength but also fully reclaimed nearly country rock Ore,
Decrease the ore dissipation and dilution that unstable rock causes, the most rationally.
On the basis of above-described embodiment, concrete, foundation is left in stage casing, and foundation is complete in upper stage casing and the back production of lower stage casing
After carry out back production.
Specifically, the foundation that stage casing retains can be 8～10m, and the stage casing foundation of reservation will be complete in the back production of upper and lower stage casing
After carry out unifying back production.
Stage casing retain foundation be conducive to protecting the haulage drift in this stage casing, it is ensured that other discharging tunnels being positioned in foundation and
The safety of connection roadway.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling, it is characterised in that comprise the steps:
(1) be a step stope (1) and two step stopes (2) by ore body division, and carry out ore body adopt quasi-cutting；
(2) a step stope (1) described in back production, and reserved retaining wall ore deposit builds the back production environment of described two step stopes (2), institute
State step stope (1) barnyard back production afterwards consolidated fill；
(3) two step stopes (2) described in back production and described retaining wall ore deposit filling respectively.
The reserved retaining wall ore deposit two the most according to claim 1 step nesting combination method of mining by the way of filling, it is characterised in that step
(2) in, described in back production, a step stope (1) uses sublevel drilling stage open stope afterwards filling mining method.
The reserved retaining wall ore deposit two the most according to claim 1 step nesting combination method of mining by the way of filling, it is characterised in that step
(3) in, described in back production, two step stopes (2) use filling-up method.
The reserved retaining wall ore deposit two the most according to claim 1 step nesting combination method of mining by the way of filling, it is characterised in that described step
Suddenly in (one), the step adopting quasi-cutting engineering of ore body includes:
Lane (11) along the pulse in driving ore removal lane, stage casing (14) and arteries and veins successively, and described stage casing ore removal is started from level haulage lane (10)
Lane (14) is through with the ore pass of stope (7)；
In the outer connection roadway (9) of the horizontally disposed arteries and veins of polycrystalline substance ore removal and lower wall People's Bank of China equipment raise (16), the outer connection roadway (9) of described arteries and veins
With equipment raise (16) UNICOM of described lower wall People's Bank of China, dug by the outer connection roadway (9) of described arteries and veins and described lower wall People's Bank of China equipment raise (16)
Enter the sublevel drilling gallery (18) of a described step stope (1)；
Each described sublevel drilling gallery (18) near driving cutting crosscut, one end of upper dish and slot raise, in described cutting
Drilling upper centripetal deep hole in crosscut, forms cutting groove with described slot raise for scope of freedom explosion；
Driving ore pass (12) and Mai Nei People's Bank of China ventilation shaft (8) by the way in described two step stopes (2), described Mai Nei People's Bank of China leads to
Stage casing and lower stage casing in ventilating shaft (8) UNICOM, described direct route ore pass (12) and described stage casing ore removal lane (14) UNICOM, tie from bottom
Structure ore removal level driving ore removal Chuan Mai lane (4) and ore removal connection roadway (6).
The reserved retaining wall ore deposit two the most according to claim 3 step nesting combination method of mining by the way of filling a, it is characterised in that step
Stope (1) being that the scope of freedom undercuts by lane, ore deposit (5), forms first and undercuts layer；The reserved retaining wall ore deposit of one step stope (1) includes the
One L-type retaining wall ore deposit (22), the second L-type retaining wall ore deposit (23), Article 1 banding pattern entirety retaining wall ore deposit (26) and Article 2 banding pattern entirety are protected
Wall ore deposit (27)；Described the first of the upper dish layer that undercuts reserves described first L-type retaining wall ore deposit (22), and described first undercuts more than layer each point
Layer reserves described Article 1 banding pattern entirety retaining wall ore deposit (26) respectively；Described the first of the lower wall layer that undercuts is reserved described second L-type and is protected
Wall ore deposit (23), described Article 2 banding pattern entirety retaining wall ore deposit (27) is reserved in the described first each layering more than layer that undercuts respectively.
The reserved retaining wall ore deposit two the most according to claim 4 step nesting combination method of mining by the way of filling, it is characterised in that described
In the exploitation process of one step stope (1), personnel and equipment enter each described segmentation by lower wall People's Bank of China equipment raise (16) and dig
Rock gallery；Dig in each sublevel drilling gallery to fan shaped medium length hole (17) explosion, Luo Kuang with rock drill.
The reserved retaining wall ore deposit two the most according to claim 3 step nesting combination method of mining by the way of filling, it is characterised in that described two
During step stope (2) upward horizontal slice back production, it is horizontally formed second at polycrystalline substance ore removal and undercuts layer, undercut described second
Layer constructs reinforced concrete artificial bottom layer, or uses filling aggregate and Binder Materials to construct consolidated fill at described second layer that undercuts
Layer.
The reserved retaining wall ore deposit two the most according to claim 7 step nesting combination method of mining by the way of filling, it is characterised in that back production institute
State described the second of two step stopes (2) layer that undercuts to comprise the steps:
(A) the described first L-type retaining wall ore deposit (22) that in back production, tray bottom structure is reserved, uses tailings high intensity glue after back production
Knot filling, forms " V " type nesting combination filling structure (24)；
(B) in the level of undercuting is with stope, ore removal connection roadway (6), as the scope of freedom, is back production border with described ore removal Chuan Mai lane (4),
Form parallelogram sturcutre back production region, use quadrilateral structure back production region described in shallow bore hole method back production, build parallel four limits
Shape subregion filling structure；
(C) the described second L-type retaining wall ore deposit that back production lower wall polycrystalline substance is reserved, uses after back production that tailings high intensity is cementing fills
Fill out, form " K " type nesting combination filling structure (25).
The reserved retaining wall ore deposit two the most according to claim 5 step nesting combination method of mining by the way of filling, it is characterised in that back production institute
State described the second of two step stopes (2) undercut layer with higher slice time comprise the steps:
(I) use Article 1 banding pattern entirety retaining wall ore deposit (26) described in shallow bore hole method back production, after back production, use tailings high intensity glue
Knot filling；
(II) two step stopes (2) described in shallow bore hole method back production are used；
(III) use Article 2 banding pattern entirety retaining wall ore deposit (27) described in shallow bore hole method back production, after back production, use tailings high intensity glue
Knot filling.
The reserved retaining wall ore deposit two the most according to claim 1 step nesting combination method of mining by the way of filling, it is characterised in that stage casing
Leaving foundation, described foundation carries out back production after upper stage casing and the back production of lower stage casing.
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| CN201610793168.1A CN106121643B (en) | 2016-08-31 | 2016-08-31 | Reserved two step nesting of retaining wall mine combines the method for mining by the way of filling |
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| CN111720120A (en) * | 2020-07-31 | 2020-09-29 | 王有奇 | Method for achieving pre-support by adopting two-step mining stope based on layered filling method |
| CN111997617A (en) * | 2020-09-17 | 2020-11-27 | 中冶北方（大连）工程技术有限公司 | Zonal upward layered filling mining method for medium-thickness steeply-inclined extremely-crushed ore body |
| CN112855159A (en) * | 2021-01-15 | 2021-05-28 | 山东黄金归来庄矿业有限公司 | Sector recovery method for gently inclined ore pillar |
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| CN106677780A (en) * | 2017-02-21 | 2017-05-17 | 中冶北方（大连）工程技术有限公司 | Upward and downward staged rock drilling, sublevel bottom cutting and ore removal subsequent backfilling mining method |
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| CN109707381A (en) * | 2019-01-23 | 2019-05-03 | 长沙矿山研究院有限责任公司 | To the mining codes of the advanced off-load afterwards filling barnyard of high stratification on a kind of |
| CN110284882A (en) * | 2019-06-04 | 2019-09-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of mining methods |
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| CN111720120A (en) * | 2020-07-31 | 2020-09-29 | 王有奇 | Method for achieving pre-support by adopting two-step mining stope based on layered filling method |
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| CN111997617B (en) * | 2020-09-17 | 2022-05-13 | 中冶北方（大连）工程技术有限公司 | Zonal upward layered filling mining method for medium-thickness steeply-inclined extremely-crushed ore body |
| CN112855159A (en) * | 2021-01-15 | 2021-05-28 | 山东黄金归来庄矿业有限公司 | Sector recovery method for gently inclined ore pillar |
| CN112879084A (en) * | 2021-01-18 | 2021-06-01 | 长沙矿山研究院有限责任公司 | Method for forming tailing underground storage system |
| CN113431576A (en) * | 2021-05-20 | 2021-09-24 | 安徽开发矿业有限公司 | Control process for reducing stoping filling mixing rate of two-step stope |
| CN113530541A (en) * | 2021-08-03 | 2021-10-22 | 长沙矿山研究院有限责任公司 | Open stope subsequent filling mining method for sectioned rock drilling stage of thick and large ore body |
| CN113565507A (en) * | 2021-08-03 | 2021-10-29 | 长沙矿山研究院有限责任公司 | Open stope subsequent filling mining method for V-shaped top column subsection rock drilling stage of thick and large ore body |
| CN113565507B (en) * | 2021-08-03 | 2023-05-23 | 长沙矿山研究院有限责任公司 | Open-stoping subsequent filling mining method for V-shaped top column sectional rock drilling stage of thick and large ore body |
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