CN104806244B - Filling mining method for slant middle-thick ore body - Google Patents

Filling mining method for slant middle-thick ore body Download PDF

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Publication number
CN104806244B
CN104806244B CN201510158269.7A CN201510158269A CN104806244B CN 104806244 B CN104806244 B CN 104806244B CN 201510158269 A CN201510158269 A CN 201510158269A CN 104806244 B CN104806244 B CN 104806244B
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stope
ore
width
mining
mineral building
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CN201510158269.7A
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Chinese (zh)
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CN104806244A (en
Inventor
李元辉
张忠辉
冯夏庭
徐帅
安龙
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东北大学
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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
    • EFIXED CONSTRUCTIONS
    • E21EARTH 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
    • E21F15/005Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
    • EFIXED CONSTRUCTIONS
    • E21EARTH 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
    • E21F15/08Filling-up hydraulically or pneumatically

Abstract

The invention relates to a filling mining method for a slant middle-thick ore body. The method includes the following steps: (1) chamber division; (2) chamber stoping; specifically, each chamber is divided into two mining ranges respectively of a hanging side and a heading side, namely, a hanging side mining range stope and a heading side mining range stope, according to the connecting line between the hanging side vertex and the heading side bottom point for stoping; the heading side mining range stope is preferentially stoped, and then the hanging side mining range stope is stoped; in each stage, the stoping is carried out in the chambers one by one from bottom to top along the ore body; the stoping in both the heading side mining range stope and the hanging side mining range stope includes stope arrangement and three processes, namely, mining, stope ore drawing and chamber filling; the chambers are divided into two mining ranges, the hanging side mining range and the heading side mining range, for mining; the heading side mining range is firstly mined, and after the goaf is filled, the hanging side mining range is mined, so that full recovery of collapsed ores in the heading side mining range stope can be ensured, and untimely falling of the surrounding rock on the hanging side due to crush and mixing-in of a large number of barren rocks on the hanging side are avoided; the hanging side mining range stope is stoped after the goaf of the heading side mining range stope is filled in a high-concentration manner, so that stability of the stope surrounding rock body is improved; by partially controlling the ore drawing, ore piles are reserved in the stopes, so that the hanging side surrounding rock can be effectively supported, an extrusion condition is provided for next blasting, and the blasting effect is improved.

Description

A kind of slant middle thick orebody filling mining method

Technical field

The present invention relates to a kind of underground mining method, particularly a kind of double width for slant middle thick orebody divides to be adopted segmentation and fills Fill out mining methods.

Background technology

For land burial mineral deposit inclination angle 30 °~55 °, thickness more than 10m slant middle thick orebody, domestic and international mine Using main mining method have:(1)Low sub-level primary stoping, low ore deposit high sublevel ore removal mineral building method, breasting method, the Quan Mianfang of paragraphing Post method.These methods be primarily suitable for country rock consolidate condition, in rock crusher, especially on ore body disk built on the sand when, then There is production security poor, mine loss and dilution serious problems;(2)Upward horizontal slice filling method, Upward drift, under To admission passage filling method.These method applicabilities are strong, but adopt that quasi- quantities is big, low production efficiency, production cost are high, especially in upper disk Under the conditions of rock crusher, frequently, stope job safety degree is poor for ore-rock inbreak;In order to prevent inbreak, have in part mine Reserved permanent in a large number studding in stope, and abandon to the recovery partly closely going up ore body at disk, thus causing ore loss ratio to increase Plus;(3)Using Handling by blast force Pre-control roof medium-length hole afterwards filling mining methods.Such mining methods, mining technology is numerous and diverse, production High cost, ore body bad adaptability.To sum up, such ore body due to inclination angle little, in exploitation process, broken ore cannot be by gravity Realize nature to release, cause and produce a large amount of residuals in ore body lower wall, cause Ore to lose in a large number;Simultaneously as orebody thickness is inclined Little, make limited by stope working space, generally fallen miner's skill using shallow bore hole, seriously constrain mine capacity, lead to such ore deposit Bed selection of mining is difficult, adopt and cut that quantities is big, ore caving and ore handling are difficult, mechanization degree and working performance are low, produce The series of technical such as cycle length, are the uneasily mining orebodies generally acknowledged both at home and abroad.

Content of the invention

It is an object of the invention to provide a kind of solve slant middle thick orebody(Inclination angle is in 30 °~55 °, thickness in more than 10m), Especially go up disk rock crusher difficulty adopt under the conditions of safe and efficient mining methods.

The object of the present invention is achieved like this:

A kind of slant middle thick orebody filling mining method is it is characterised in that comprise the steps:

(1)Mineral building divides:Mineral building is arranged along orebody trend direction, and mineral building length is 30m ~ 40m;Height of lift 10-15m, Each two segmentation divides a mineral building height into, and mineral building width is orebody thickness, and mineral building side section shape approximate parallelogram is pressed Ore body division is several mineral buildings by aforesaid way;

(2)Mineral building back production:Each mineral building is divided into upper disk by upper disk summit and lower wall bottom point line and lower wall two is adopted Width, that is, descend width stope mining(2.1), upper width stope mining(2.2);Stopping sequence is:First carry out lower width stope mining, treat lower width After the completion of stope Filling mine-out area, then carry out upper width stope mining;

Described lower width stope mining, upper width stope mining all include stope arrangement and exploitation, ore drawing in stope, mineral building filling Three processes.

Described lower width stope mining detailed process is as follows:

(2.1.1)Lower width stope arrangement and exploitation;Constructing along orebody trend direction apart from ore body lower wall 15-20m position The outer haulage way of segmentation arteries and veins, apart from ore body lower wall 7-9m at, parallel to transporting width stope segmentation under lane construction outside segmentation arteries and veins Rock drilling gallery, wears arteries and veins along sublevel drilling gallery every 5-8m driving ore removal, and the outer haulage way of UNICOM's segmentation arteries and veins is divided with lower width stope Section rock drilling gallery, ore removal wears arteries and veins as the main thoroughfare of stope ore handling;In the outer haulage way of mineral building top the 3rd segmentation arteries and veins The middle position of corresponding mineral building, along vertical orebody trend direction construction sublevel fill stoping gallery, the through upper disk ore-rock border in one end(I.e. The upper disk summit of mineral building);The middle position of corresponding mineral building in a sublevel drilling gallery, the lower width stope slot raise of construction, and It is connected with the upper disk ore-rock boundary of sublevel fill stoping gallery;With slot raise as the scope of freedom, formed down using medium-length hole blasting Width stope cutting groove;With cutting groove as the scope of freedom, in cutting groove both sides, along orebody trend with the construction of certain array pitch parallel on to fan Shape medium-length hole, moves back from mediad both sides and adopts, every separate explosion 2-4 artillery salvo hole;

(2.1.2)Lower width ore drawing in stope:Using scraper ore removal, each broken ore is transported 20%-30%, quick-fried for next time Broken corresponding compensation space is provided, remaining Ore persists stope and supports goaf, and after the completion of ore deposit for the treatment of all to fall, property is a large amount of again Release;

(2.1.3)Lower width mineral building filling:After Ore goes out sky, block mining roadway mouth, from stope top section filling gallery Set up filling piping, be 1 using cement-sand ratio:4 cement-barren rock-tailings material consolidated fill goaf;Body to be filled reaches set After intensity, start to exploit width stope on mineral building.

Described upper width stope mining detailed process is as follows:

(2.2.1)Upper width stope arrangement and exploitation:After lower width mineral building back production sand off, have a common boundary in ore body lower wall ore-rock Place(The i.e. lower wall bottom point of mineral building), width stope sublevel drilling gallery in construction, in former ore removal Chuan Mai position, excavates obturator, connection The outer haulage way of reduction of fractions to a common denominator section arteries and veins and sublevel drilling gallery;In the middle position of upper width stope sublevel drilling gallery, the lower width of next-door neighbour is adopted Obturator, is constructed obliquely upper width slot raise with 55 ° of inclination angles, is connected with the 3rd sublevel fill stoping gallery, to cut well is The scope of freedom forms width stope cutting groove;To fan shaped medium length hole on the cutting groove both sides Drilling being formed, with cutting groove as freedom Face, moves back from mediad both sides and adopts, every separate explosion 2-4 row;

(2.2.2)Upper width ore drawing in stope:Using scraper ore removal, each broken ore is transported 20%-30%, quick-fried for next time The corresponding compensation space of broken offer, remaining Ore persists support goaf in mineral building, and after the completion of ore deposit to be fallen, property is a large amount of again Release;

(2.2.3)Upper width mineral building filling:After Ore goes out sky, set up filling piping from stope top section filling gallery, adopt It is 1 with cement-sand ratio:8 cement-barren rock-tailing cemented filling goaf.

The present invention compared with prior art has advantages below:

(1) mineral building is divided into upper width and lower width two step is divided and adopted, first adopt lower width, after the completion for the treatment of goaf filling, then adopt Upper width, on the one hand can ensure that the abundant recovery to broken ore for the lower width stope, it is to avoid too early due to upper disk rock crusher Inbreak, causes being mixed in a large number of hangingwall waste;Meanwhile, under the high dense fill behind width stope goaf, width stope in back production, The stability of face surrounding rock body can be improved;During upper width stope mining, by Partial controll ore removal, stope is made to retain ore deposit Clitter, on the one hand can support armor rock, also provide extruding condition for lower separate explosion simultaneously, improve demolition effect;

(2) stope falls ore deposit:Arrange rock drilling lane in upper and lower width stope along orebody trend direction respectively, using fan shaped medium length hole Fall ore deposit.Wherein, lower width stope rock drilling lane is disposed adjacent in the country rock of lower wall, and the lateral opening angle of medium-length hole controls more than 50 °, as far as possible Reduce Rock dilution, effective releasing of lower wall broken ore will be ensured simultaneously;Upper width stope rock drilling lane is arranged in lower wall ore-rock and hands over At boundary, the lateral opening angle of medium-length hole is 55 °.This arrangement one side efficiently solves for gently inclined orebody lower wall avalanche Ore can not divide to adopt by upper and lower width stope and can ensure that upper disk high grade ore by the problem of deadweight releasing completely, meanwhile Efficient recovery;

(3) divided using medium-length hole double width and adopt sublevel fill-mining method, reduce in lower wall Ore residual and raising effective While the disk high grade ore response rate, due to workman's only operation in stope rock drilling lane, can avoid in exploitation process due to The stope job safety sex chromosome mosaicism that upper disk rock crusher inbreak brings, realizes safe and efficient mining.

Brief description

Fig. 1 is the work progress schematic diagram of mining methods of the present invention.

Fig. 2 is the II-II sectional view of Fig. 1.

Fig. 3 is the III-III sectional view of Fig. 1.

In figure:1- parallelogram mineral building;2- upper width stope;Width stope under 3-;The outer haulage drift of 4- segmentation arteries and veins;Width under 5- Stope rock drilling gallery;6- ore removal wears arteries and veins;7- sublevel fill stoping gallery;Width stope slot raise under 8-;Width stope cutting groove under 9-; 10- upper width stope sublevel drilling gallery;11- upper width stope slot raise;12- blasthole.

Specific embodiment

A kind of slant middle thick orebody filling mining method, specific implementation process, as shown in Fig. 1 ~ Fig. 3, sets level interval 60m, height of lift 10-30m, along orebody trend direction every 30-40m divide a mineral building, a height of two segmentation height of mineral building, A width of ore body is entirely thick.Mineral building is divided into upper disk by upper disk summit and lower wall bottom point line and lower wall two is adopted width and gone up width(2) With lower width(3), first adopt lower width(3)After adopt width(2).

Lower width stope(3)Exploitation process:In a segmentation apart from ore body lower wall 15-20m position along orebody trend direction, construct The outer haulage way of segmentation arteries and veins(4), at ore body lower wall 7-9m, construction is parallel to the lower width stope of the outer haulage way of segmentation arteries and veins Sublevel drilling gallery(5), wear arteries and veins every 5-8m driving ore removal(6), haulage way and lower width stope segmentation chisel outside UNICOM's segmentation arteries and veins Rock gallery, ore removal wears arteries and veins as the main thoroughfare of stope ore handling.Central position in the corresponding mineral building of mineral building top the 3rd segmentation Put construction sublevel fill stoping gallery(7), the vertical orebody trend of sublevel fill stoping gallery, the through upper disk ore-rock border in one end(I.e. mineral building Upper disk summit).In sublevel drilling gallery(5)The lower width stope slot raise of middle construction(8), and with sublevel fill stoping gallery(7)It is connected Logical.With slot raise as the scope of freedom, lower width stope cutting groove is formed using medium-length hole blasting(9).Following width stope cutting groove(9) For the scope of freedom, in cutting groove both sides, along orebody trend with the construction of certain array pitch parallel on to fan shaped medium length hole, from mediad both sides Move back and adopt, every separate explosion 2-4 artillery salvo hole(12).Using trackless ore removal equipment ore removal, in order to ensure the stability of stope, only transport every time Go out the 20%-30% of broken ore, provide corresponding compensation space for lower separate explosion, remaining Ore persists stope and supports goaf, Treat all to fall after the completion of ore deposit, property is released in a large number again.After Ore goes out sky, from stope top section filling gallery(7)Erection is filled Fill out pipeline, be 1 using cement-sand ratio:4 cement-barren rock-tailings material consolidated fill goaf.Body to be filled reaches given strength Afterwards, start to exploit width stope on mineral building.

Upper width stope(2)Exploitation process:After the completion of lower width stope mining filling, in lower wall ore-rock intersection(I.e. mineral building Lower wall bottom point)Width stope sublevel drilling gallery in construction(10), wear arteries and veins in former ore removal(6)Position, excavates obturator, UNICOM divides The outer haulage way of section arteries and veins(4)With sublevel drilling gallery(10).At width obturator under stope central authorities next-door neighbour's mineral building, from upper width stope Sublevel drilling gallery(10)Constructed obliquely upper width slot raise with 55 ° of inclination angles(11), it is connected with the 3rd sublevel fill stoping gallery, Form upper width stope cutting groove to cut well for the scope of freedom.Similar to the recovery process of width under mineral building, in the cutting groove two being formed To fan shaped medium length hole on sidetracking chisel, with cutting groove as the scope of freedom, move back from mediad both sides and adopt, every separate explosion 2-4 artillery salvo hole(12), Using trackless ore removal equipment ore removal, after explosion, only transport the 20% ~ 30% of each broken ore, remaining Ore persists in mineral building Support goaf, after the completion of the ore deposit that all falls, remaining Ore is disposably released in a large number;Go out after sky after Ore, using cement-sand ratio be 1::8 cement-barren rock-tailing cemented filling goaf.

Claims (3)

1. a kind of slant middle thick orebody filling mining method is it is characterised in that comprise the steps:
(1)Mineral building divides:Mineral building is arranged along orebody trend direction, and mineral building length is 30m ~ 40m;Height of lift 10-15m, every two Individual segmentation divides a mineral building height into, and mineral building width is orebody thickness, and mineral building side section shape approximate parallelogram, by above-mentioned Ore body division is several mineral buildings by mode;
(2)Mineral building back production:Each mineral building is divided into upper disk by upper disk summit and lower wall bottom point line and lower wall two adopts width, that is, Upper width stope and lower width stope;During back production, mineral building adopts substep back production, that is, descend width stope mining(2.1), upper width stope mining (2.2);Stopping sequence is:First carry out lower width stope mining, after the completion for the treatment of lower width stope Filling mine-out area, then carry out upper width stope and return Adopt;
Described lower width stope mining, upper width stope mining all include stope arrangement and exploitation, ore drawing in stope, mineral building filling three Process.
2. a kind of slant middle thick orebody filling mining method according to claim 1 is it is characterised in that described lower width is adopted Field back production detailed process is as follows:
(2.1.1)Lower width stope arrangement and exploitation;Apart from ore body lower wall 15-20m position along orebody trend direction construct segmentation The outer haulage way of arteries and veins, apart from ore body lower wall 7-9m at, parallel to transporting width stope sublevel drilling under lane construction outside segmentation arteries and veins Gallery, wears arteries and veins along sublevel drilling gallery every 5-8m driving ore removal, and the outer haulage way of UNICOM's segmentation arteries and veins is dug with lower width stope segmentation Rock gallery, ore removal wears arteries and veins as the main thoroughfare of stope ore handling;Central position in the corresponding mineral building of mineral building top the 3rd segmentation Put, sublevel fill stoping gallery of constructing, the vertical orebody trend of sublevel fill stoping gallery, the through upper disk ore-rock border in one end, that is, mineral building is upper Disk summit;Width stope slot raise under constructing in sublevel drilling gallery, and be connected with sublevel fill stoping gallery;With slot raise For the scope of freedom, lower width stope cutting groove is formed using medium-length hole blasting;Following width stope cutting groove is the scope of freedom, in cutting groove two Side, along orebody trend with the construction of certain array pitch parallel on to fan shaped medium length hole, move back from mediad both sides and adopt, every separate explosion 2-4 row Blasthole;
(2.1.2)Lower width ore drawing in stope:Using scraper ore removal, each broken ore is transported 20%-30%, remaining Ore persists Support goaf in mineral building, provide corresponding compensation space for lower separate explosion, after the completion of ore deposit for the treatment of all to fall, property is a large amount of again Release;
(2.1.3)Lower width mineral building filling:After Ore goes out sky, block mining roadway mouth, set up from stope top section filling gallery Filling piping, is 1 using cement-sand ratio:4 cement-barren rock-tailing cemented filling goaf;Body to be filled reaches given strength Afterwards, start to exploit width stope on mineral building.
3. a kind of slant middle thick orebody filling mining method according to claim 1 is it is characterised in that described upper width is adopted Field back production detailed process is as follows:
(2.2.1)Upper width stope arrangement and exploitation;After lower width mineral building back production sand off, in ore body lower wall ore-rock intersection, The i.e. lower wall bottom point of mineral building, width stope sublevel drilling gallery in construction, then in former ore removal Chuan Mai position, excavates obturator, connection The outer haulage way of reduction of fractions to a common denominator section arteries and veins and sublevel drilling gallery;In stope central authorities, the lower width stope filling body of next-door neighbour, from upper width stope segmentation Rock drilling gallery, is constructed obliquely upper width slot raise with 55 ° of inclination angles, is connected with the 3rd sublevel fill stoping gallery, to cut well is The scope of freedom forms width stope cutting groove;To fan shaped medium length hole on the cutting groove both sides Drilling being formed, with cutting groove as freedom Face, moves back from mediad both sides and adopts, every separate explosion 2-4 row;
(2.2.2)Upper width ore drawing in stope:Using scraper ore removal, each broken ore is transported 20%-30%, be that lower separate explosion carries For corresponding compensation space, remaining Ore persists support goaf in mineral building, and after the completion of ore deposit to be fallen, property is put in a large number again Go out;
(2.2.3)Upper width mineral building filling:After Ore goes out sky, set up filling piping from stope top section filling gallery, using ash Sand is than for 1:8 cement-barren rock-tailing cemented filling goaf.
CN201510158269.7A 2015-04-03 2015-04-03 Filling mining method for slant middle-thick ore body CN104806244B (en)

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CN106121650B (en) * 2016-08-31 2018-06-12 中南大学 A kind of mining methods of the thick big poor orebody mining Space Reconstruction of low-angle dip
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CN108442930B (en) * 2018-03-15 2019-10-11 中南大学 A kind of Medium Thickness And Medium Slope Angle metal ore mining methods
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CN109083644B (en) * 2018-08-16 2019-08-02 中南大学 A kind of safe and efficient mining methods of gently inclined medium thick orebody
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