CN102434204A - Mine waste rock and all tailing pipeline conveying filling system and filling method using same - Google Patents
Mine waste rock and all tailing pipeline conveying filling system and filling method using same Download PDFInfo
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- CN102434204A CN102434204A CN2011103100493A CN201110310049A CN102434204A CN 102434204 A CN102434204 A CN 102434204A CN 2011103100493 A CN2011103100493 A CN 2011103100493A CN 201110310049 A CN201110310049 A CN 201110310049A CN 102434204 A CN102434204 A CN 102434204A
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Abstract
The invention discloses a mine waste rock and all tailing pipeline conveying filling system and a filling method using same. The filling system comprises a stirring tank connected with a stirring machine, a water supply device, a hydraulic filling pump and two feeding cabins respectively; the hydraulic filling pump is connected with a conveying pipeline; and the conveying pipeline is connected with a high pressure wind conveying device and a water cleaning device respectively. The filling method comprises the following steps of: test the water in the filling system; forming cement pastes in the stirring machine; filling the water to the stirring tank; adding in sequence the cement pastes, all tailings and waste rocks; stirring and adjusting weight concentration of the mixture to obtain pulp filled with the waste rocks and the all tailings; continuously conveying the pulp filled with the waste rocks and the all tailings to the filling stope to be filled; after that, cleaning the conveying pipeline by water at first and by water and wind next. The filling method is a low-cost novel mine filling mode integrating the advantages of all tailing high concentration filling technique and paste filling technique. The filling method is suitable for various mines applying filling mining methods. The pulp filled in a gob is characterized by high strength, no separation, stability in pipeline conveying and the like.
Description
Technical field
The invention belongs to the mine engineering technical field, relate to mining mountain, a kind of hole barren rock-full tailings line transportation filling system, the invention still further relates to a kind of method of utilizing this filling system bashing.
Background technology
Barren rock and tailings are two big types of solid industrial wastes of bargh, and existing filling in mine technology far can not satisfy the requirement of Mining Environment Conservation.At present, be that the classified tailings filling process of aggregate, full tailings high concentration filling process and paste body filling technology have obtained important breakthrough technically and applied with the mine tailing; Wherein, the full mine tailing filling technique of high concentration can utilize full tailings expeditiously with rational filling cost.Aspect the chats filling; Now still with natural grading digging barren rock as filling gather materials, cement paste is glued medium; And can only utilize goaf drop condition, carry and drench hybrid mode certainly through the casting resin shunting and realize consolidated fill, thereby the utilization rate of barren rock be limited; Can only promote in the minority mine, and adopt the mine of stratified filling method can't effectively utilize barren rock to carry out filling.Barren rock and tailings are large waste materials in mine and do not have the not enough problem in source, and these barren rocks will constitute the pollution to environment if be not processed.Existing mine filling system can not use chats and tailings to prepare filling slurry in a large number, makes that the utilization rate of these two kinds of waste materials is limited, and environment is polluted.Therefore, need further research and development chats-complete tailing-filled new model, to reduce filling cost and to reduce the discharging of mine waste to the face of land.
Summary of the invention
In order to overcome the problem that exists in the above-mentioned prior art; The purpose of this invention is to provide mining mountain, a kind of hole barren rock-full tailings line transportation filling system, effectively utilize barren rock and tailings, reduce mine waste and discharge to the face of land; Alleviate pollution, reduce the filling cost expense environment.
Another object of the present invention provides a kind of method of utilizing above-mentioned filling system the goaf to be carried out filling.
Be to realize that above-mentioned purpose, the technical scheme that the present invention adopted are, mining mountain, a kind of hole barren rock-full tailings line transportation filling system comprises agitation tank, and agitation tank is connected with mixer, water supply installation, filling-up hydraulically pump and two feed hoppers respectively; The filling-up hydraulically pump is connected with conveyance conduit, and conveyance conduit also is connected with water washing device with the high-pressure blast transport respectively.
Another technical scheme that the present invention adopted is, a kind of method of utilizing above-mentioned line transportation filling system that the filling stope is carried out filling is specifically carried out according to the following steps:
Step 1: a line transportation filling system is installed, and this line transportation filling system comprises agitation tank, and agitation tank is connected with mixer, water supply installation, filling-up hydraulically pump and two feed hoppers respectively; The filling-up hydraulically pump is connected with conveyance conduit, and conveyance conduit also is connected with water washing device with the high-pressure blast transport respectively;
Start water supply installation, water is sent into agitation tank, filling-up hydraulically pump and conveyance conduit successively, try the water;
Step 2: full tailings and barren rock are sent into two feed hoppers respectively;
Cement is sent into mixer, and stir that to obtain concentration be 65%～72% cement paste;
Step 3: behind 1/3 material level of the water in the agitation tank to agitation tank; Start agitation tank; Water filling in agitation tank adds cement paste, full tailings and barren rock more successively, and sending into the full tailings of agitation tank and the weight ratio of barren rock is 1.5～2.5 ︰ 1; The instantaneous flow of full tailings and barren rock is 120～140 t/h, and cement paste adds agitation tank by the flow of 20～30t/h;
Step 4:, in agitation tank, form weight concentration and be barren rock-unclassified tailing filling materials slurry of 76%～81% through the water supply installation adjustment of in agitation tank, supplying water;
Step 5: start the filling-up hydraulically pump; Barren rock-unclassified tailing filling materials in the agitation tank is delivered to the filling stope continuously through conveyance conduit, this filling stope is carried out filling, simultaneously; Flow by 20～30t/h adds cement paste continuously in agitation tank; Continue in agitation tank, to add full tailings and barren rock by weight 1.5～2.5 ︰ 1, and in agitation tank, add water continuously through water supply installation, continuous formation weight concentration is barren rock-unclassified tailing filling materials slurry of 76%～81% in agitation tank; The barren rock that forms continuously in the agitation tank-unclassified tailing filling materials slurry is delivered to the filling stope continuously, until the filling of accomplishing this filling stope;
Step 6: after filling is accomplished, start water washing device earlier and clean conveyance conduit, restart the high-pressure blast transport, conveyance conduit is carried out wind and water combined cleaning, until conveyance conduit is cleaned up.
Placement method of the present invention with the barren rock of mine down-hole mining and the full tailings of ore dressing as aggregate; With the Portland cement is adhesive material; Carry out the filling slurry that formulated in combination becomes the high concentration upper flow regime with mine wastewater, realize filling through line transportation (but pumping, can flow automatically) to underground goaf.Be a kind of high concentration and paste body filling technical advantage of integrating, the filling in mine new model that cost is low is applicable to the mine of the types of applications method of mining by the way of filling.Characteristics such as the slip that is filled into the goaf has high strength, do not emanate, line transportation is stable.
Description of drawings
Accompanying drawing is the structural representation of filling system of the present invention.
Among the figure, 1. first belt conveyor, 2. second belt conveyor, 3. feed mechanism, 4. first feed hopper; 5. second feed hopper, 6. water supply installation, 7. mixer, 8. agitation tank; 9. filling-up hydraulically pump, 10. high-pressure blast transport, 11. conveyance conduits, 12. water washing devices.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.
Shown in accompanying drawing, the structure of filling system of the present invention comprises agitation tank 8, and agitation tank 8 is connected with filling-up hydraulically pump 9 with mixer 7, first feed hopper 4, second feed hopper 5, water supply installation 6 respectively; Mixer 7 is connected with feed mechanism 3; First feed hopper 4 is connected with first belt conveyor 1; Second feed hopper 5 is connected with second belt conveyor 2; Filling-up hydraulically pump 9 is connected with conveyance conduit 11, and conveyance conduit 11 also is connected with water washing device 12 with high-pressure blast transport 10 respectively.
It is the seamless steel pipe of 110～150mm that conveyance conduit 11 adopts caliber.Filling-up hydraulically pump 9 adopts double-cylinder hydraulic filling pump.
The present invention also provides a kind of method of utilizing above-mentioned filling system that filling is carried out in the goaf, and this method is specifically carried out according to the following steps:
Step 1: start water supply installation 6, water supply installation 6 is sent water into agitation tank 8, filling-up hydraulically pump 9 and conveyance conduit 11 successively, tries the water 3～5 minutes, lubricated filling pipeline;
Step 2: full tailings is sent into first feed hopper 4 through first belt conveyor 1;
Is that the barren rock of 16mm～20mm is sent into second feed hopper 5 through second belt conveyor 2 with particle diameter;
Through feed mechanism 3 cement is sent into mixer 7, and stir that to obtain concentration be 65%～72% cement paste;
Step 3: through water supply installation 6 water filling in agitation tank 8; Behind the material level of the water in the agitation tank 8 to agitation tank 1/3; Start agitation tank 8, and full tailings in the cement paste in the mixer 7, first feed hopper 4 and the barren rock in second feed hopper 5 are sent into agitation tank 8 successively, sending into the full tailings of agitation tank 8 and the weight ratio of barren rock is 1.5～2.5 ︰ 1; The instantaneous flow of full tailings and barren rock is 120～140 t/h, and cement paste adds agitation tank 8 by the flow of 20～30t/h;
Step 4: the material to sending into agitation tank 8 stirs; Then; Supply water for agitation tank 8 through water supply installation 6 and adjust, the formation weight concentration is barren rock-unclassified tailing filling materials slurry of 76～81% in agitation tank 8, reaches the filling slurry concentration that control is carried; Contain 260～280 Kg cement in every cubic metre of this barren rock-unclassified tailing filling materials slurry, to satisfy the requirement of strength of filling mass R28 >=5.0MPa;
Step 5: start filling-up hydraulically pump 9; Barren rock in the agitation tank 8-unclassified tailing filling materials slurry is sent into conveyance conduit 11, and this barren rock-unclassified tailing filling materials slurry is delivered to the filling stope, this filling stope is carried out filling through conveyance conduit 11; Simultaneously; Flow by 20～30t/h injects cement paste continuously in agitation tank 8, continue in agitation tank 8, to add full tailings and barren rock by weight 1.5～2.5 ︰ 1, and the instantaneous flow of full tailings and barren rock is 120～140t/h; And it is lasting to agitation tank 8 water supply adjustment through water supply installation 6; Lasting formation weight concentration is barren rock-unclassified tailing filling materials slurry of 76%～81% in agitation tank 8, through filling-up hydraulically pump 9 barren rocks-unclassified tailing filling materials of continuous formation in the agitation tank 8 is starched to continue to be delivered to the filling stope, until the filling of accomplishing this filling stope;
Step 6: after filling is accomplished; Start 12 pairs of conveyance conduits of water washing device 11 earlier and clean 3～5min, restart high-pressure blast transport 10, high-pressure blast is blown into conveyance conduit 11; Conveyance conduit 11 is carried out wind and water combined cleaning, until conveyance conduit 11 is cleaned up.
Placement method of the present invention with the barren rock of mine down-hole mining and the full tailings of ore dressing as aggregate; With the Portland cement is adhesive material; Carry out the filling slurry that formulated in combination becomes the high concentration upper flow regime with mine wastewater; Weight ratio at full tailings and barren rock is under the condition of 6 ︰ 4, when the weight concentration of filling slurry is 77～79%, the yield stress excursion of filling slurry less (
τ 0=40～60Pa), the viscosity factor excursion less (
η=1.0～3.0Pa.s), all be beneficial to line transportation.The weight concentration of filling slurry reduces along with the slip weight concentration increases flow index the highly significant that influences of slip flow index n.After pulp density is greater than 77.6%; Flow index is tending towards 1.0; According to the concrete consistence grade and the slump scope of China and American Society Testing and Materials (ASTM) formulation, the barren rock that uses in the placement method of the present invention-unclassified tailing filling materials slurry belongs to flowing concrete.
Barren rock-full tailings aggregate has continuity, the caliber 110～150mm of suitable carrier pipe; The big more resistance of caliber is big more, and pipe wear is serious more, thereby recommends to use caliber 150mm seamless steel pipe, and the slip conveying capacity of this seamless steel pipe is 90～105m
3/ h.
The inventive method adopts geomantic omen, face of land combined cleaning mode to clean conveyance conduit 10, and rinse water can be separated at stope.The pump discharge place installs high-pressure air hose and water pipe concentratedly on the face of land, and the combined cleaning mode through first water after wind had both guaranteed to clean up pipeline, using water wisely again, more alleviated down-hole sewage emissions amount.
This placement method makes full use of the barren rock and the full tailings of ore dressing of mine down-hole mining; With it as aggregate; Line transportation characteristic research through indoor barren rock-full-tailing slurry; Adopt the Study of Flow Characteristics of waste fill slip in the sky route etc., seek out and can satisfy the barren rock particle diameter that the down-hole long-distance pipe carries and the best rational proportion of barren rock-full tailings, again through commerical test solution barren rock-the full preparation and the stirring technique of tailings high concentration, upper flow regime slip; Barren rock-full tailings high concentration ground paste filling system start-up technique; Barren rock-unclassified tailing filling materials slurry pipe transportation technology; Barren rock-full tailings high concentration ground paste filling pipeline cleaning technique.
Through water supply installation 6 water is sent into agitation tank 8, filling-up hydraulically pump 9 and conveyance conduit 11 successively, tried the water 3 minutes, lubricated filling pipeline; Through first belt conveyor 1 full tailings is sent into first feed hopper 4; Is that the barren rock of 16～20mm is sent into second feed hopper 5 through second belt conveyor 2 with particle diameter; Through feed mechanism 3 cement is sent into mixer 7, and stir that to obtain concentration be 65% cement paste; Through water supply installation 6 water filling in agitation tank 8; Behind 1/3 material level of the water in the agitation tank 8 to agitation tank 8; Start agitation tank 8, and full tailings in the cement paste in the mixer 7, first feed hopper 4 and the barren rock in second feed hopper 5 are sent into agitation tank 8 successively, sending into the full tailings of agitation tank 8 and the weight ratio of barren rock is 1.5 ︰ 1; The instantaneous flow of full tailings and barren rock is 120t/h, and cement is sent into agitation tank 8 by the flow of 20t/h; Material to sending into agitation tank 8 stirs; Then; Supply water for agitation tank 8 through water supply installation 6 and adjust, the formation weight concentration is barren rock-unclassified tailing filling materials slurry of 76% in agitation tank 8, reaches the filling slurry concentration that control is carried; Contain 260Kg cement in every cubic metre of this barren rock-unclassified tailing filling materials slurry, to satisfy the requirement of strength of filling mass R28 >=5.0MPa; Start filling-up hydraulically pump 9; Barren rock in the agitation tank 8-unclassified tailing filling materials slurry is sent into conveyance conduit 11, and be delivered to the filling stope, this filling stope is carried out filling through conveyance conduit 11; Simultaneously; Flow by 20t/h adds cement paste continuously in agitation tank, continue in agitation tank, to add full tailings and barren rock by weight 1.5 ︰ 1, and the instantaneous flow of full tailings and barren rock is 120～140t/h; And it is lasting to agitation tank 8 water supply adjustment through water supply installation 6; Lasting formation weight concentration is barren rock-unclassified tailing filling materials slurry of 76% in agitation tank 8, through filling-up hydraulically pump 9 barren rocks-unclassified tailing filling materials of continuous formation in the agitation tank 8 is starched to continue to be delivered to the filling stope, until the filling of accomplishing this filling stope.
More than 1900 meter of the filling pipeline length overall of filling system in the present embodiment, 470 meters of the filling stope degree of depth, 1200 cubes of charging quantities.
According to the on-site measurement result; The mobile slope angle that useless tail is starched than the barren rock-unclassified tailing filling materials that is 1.5 ︰ 1 is at 0.55 °～1.19 °; Phenomenon that the blanking point place has distant " awl heap "; Show the mobile fine of this filling slurry, visible in conjunction with the slip slump, barren rock-full tailings high concentration ground paste should belong to the upper flow regime slurry.After filling is accomplished, start 12 pairs of conveyance conduits of water washing device 11 earlier and clean 3min, restart high-pressure blast transport 10, high-pressure blast is blown into conveyance conduit 11, conveyance conduit 11 is carried out wind and water combined cleaning, until conveyance conduit 11 is cleaned up.
The dehydrating amount of the high concentration barren rock that present embodiment adopts-unclassified tailing filling materials slurry obviously is less than fine sand paste body filling (the actual high concentration that remains).If can drainage water and tube washing water be shunted in the filling, barren rock-full tailings high concentration (77%～79%) filling does not need artificial dehydration, and dehydration gets final product naturally.The intensity of barren rock in the stope of present embodiment filling-complete tailing-filled body reaches R3 >=1.5MPa, R7 >=2.5MPa, R28 >=5.0MPa.Barren rock-complete tailing-filled technology cost is about 86.48 yuan/m
3, be the mine at present with 66.25% of rod milling sand gravity flow filling cost, be 88% of paste body filling cost, advantage is apparent in view, remarkable in economical benefits.Filling slurry to after condensing is taken a sample, and the coarse fraction barren rock is evenly distributed in this sampling test block, does not see the segregation stratification, shows that the high concentration that application barren rock and full tailings are processed has good education resistance like the homogeneous slurry.
Cases of dehydration, flowability and test block pressure break information summary according to slip in the stope; As long as the concentration of barren rock-unclassified tailing filling materials slurry is controlled well; Solve drainage water and tube washing water, just can realize the high strength that stope does not dewater, obturation is not emanated, high weight, low-cost filling.
Embodiment 2
Start water supply installation 6, water supply installation 6 is sent water into agitation tank 8, filling-up hydraulically pump 9 and conveyance conduit 11 successively, tries the water 5 minutes, lubricated filling pipeline; Through first belt conveyor 1 full tailings is sent into first feed hopper 4; Is that the barren rock of 16～20mm is sent into second feed hopper 5 through second belt conveyor 2 with particle diameter; Through feed mechanism 3 cement is sent into mixer 7, and stir that to obtain concentration be 72% cement paste; Through water supply installation 6 water filling in agitation tank 8; Behind 1/3 material level of the water in the agitation tank 8 to agitation tank 8; Full tailings in cement paste in the mixer 7, first feed hopper 4 and the barren rock in second feed hopper 5 are sent into agitation tank 8 successively; Sending into the full tailings of agitation tank 8 and the weight ratio of barren rock is 2.5 ︰ 1, and the instantaneous flow of full tailings and barren rock is 140t/h, and the flow that cement paste is pressed 30t/h adds agitation tank 8; Start agitation tank 8, the material of sending into agitation tank 8 is stirred, obtain slip; Then; Supply water for agitation tank 8 through water supply installation 6 and adjust, the formation weight concentration is barren rock-unclassified tailing filling materials slurry of 81% in agitation tank 8, reaches the filling slurry concentration that control is carried; Contain 280Kg cement in every cubic metre of this barren rock-unclassified tailing filling materials slurry, to satisfy the requirement of strength of filling mass R28 >=5.0MPa; Start filling-up hydraulically pump 9; Barren rock in the agitation tank 8-unclassified tailing filling materials slurry is sent into conveyance conduit 11, and this barren rock-unclassified tailing filling materials slurry is delivered to the filling stope, this filling stope is carried out filling through conveyance conduit 11; Simultaneously; The flow of pressing 30t/h adds cement paste continuously in agitation tank 8, continue in agitation tank 8, to add full tailings and barren rock by weight 2.5 ︰ 1, and the instantaneous flow of full tailings and barren rock is 140t/h; And it is continuous in the adjustment of supplying water in the agitation tank 8 through water supply installation 6; Continuous formation weight concentration is barren rock-unclassified tailing filling materials slurry of 81% in agitation tank 8, through filling-up hydraulically pump 9 barren rocks-unclassified tailing filling materials of continuous formation in the agitation tank 8 is starched to continue to be delivered to the filling stope, until the filling of accomplishing this filling stope; After filling is accomplished, start 12 pairs of conveyance conduits of water washing device 11 earlier and clean 5min, restart high-pressure blast transport 10, high-pressure blast is blown into conveyance conduit 11, conveyance conduit 11 is carried out wind and water combined cleaning, until conveyance conduit 11 is cleaned up.
Start water supply installation 6, water supply installation 6 is sent water into agitation tank 8, filling-up hydraulically pump 9 and conveyance conduit 11 successively, tries the water 4 minutes, lubricated filling pipeline; Through first belt conveyor 1 full tailings is sent into first feed hopper 4; Is that the barren rock of 16～20mm is sent into second feed hopper 5 through second belt conveyor 2 with particle diameter; Through feed mechanism 3 cement is sent into mixer 7, and stir that to obtain concentration be 68.5% cement paste; Through water supply installation 6 water filling in agitation tank 8; Behind the material level of the water in the agitation tank 8 to agitation tank 1/2; Start agitation tank 8, and full tailings in the cement paste in the mixer 7, first feed hopper 4 and the barren rock in second feed hopper 5 are sent into agitation tank 8 successively, sending into the full tailings of agitation tank 8 and the weight ratio of barren rock is 2 ︰ 1; The instantaneous flow of full tailings and barren rock is 130t/h, and the flow that cement is pressed 25t/h adds agitation tank 8; Material to sending into agitation tank 8 stirs; Then; Supply water for agitation tank 8 through water supply installation 6 and adjust, the formation weight concentration is barren rock-unclassified tailing filling materials slurry of 78.5% in agitation tank 8, reaches the filling slurry concentration that control is carried; Contain 260Kg cement in every cubic metre of this barren rock-unclassified tailing filling materials slurry, to satisfy the requirement of strength of filling mass R28 >=5.0MPa; Start filling-up hydraulically pump 9; Barren rock in the agitation tank 8-unclassified tailing filling materials slurry is sent into conveyance conduit 11, and this barren rock-unclassified tailing filling materials slurry is delivered to the filling stope, this filling stope is carried out filling through conveyance conduit 11; Simultaneously; The flow of pressing 25t/h injects cement paste continuously in agitation tank 8, continue in agitation tank 8, to add full tailings and barren rock by weight 2 ︰ 1, and the instantaneous flow of full tailings and barren rock is 130t/h; And it is lasting to agitation tank 8 water supply adjustment through water supply installation 6; Lasting formation weight concentration is barren rock-unclassified tailing filling materials slurry of 78.5% in agitation tank 8, through filling-up hydraulically pump 9 barren rocks-unclassified tailing filling materials of continuous formation in the agitation tank 8 is starched to continue to be delivered to the filling stope, until the filling of accomplishing this filling stope; After filling is accomplished, start 12 pairs of conveyance conduits of water washing device 11 earlier and clean 4min, restart high-pressure blast transport 10, high-pressure blast is blown into conveyance conduit 11, conveyance conduit 11 is carried out wind and water combined cleaning, until conveyance conduit 11 is cleaned up.
Claims (8)
1. cheat mining mountain barren rock-full tailings line transportation filling system for one kind; It is characterized in that; This line transportation filling system comprises agitation tank (8), and agitation tank (8) is connected with mixer (7), water supply installation (6), filling-up hydraulically pump (9) and two feed hoppers respectively; Filling-up hydraulically pump (9) is connected with conveyance conduit (11), and conveyance conduit (11) also is connected with water washing device (12) with high-pressure blast transport (10) respectively.
2. line transportation filling system according to claim 1 is characterized in that, described agitation tank (8) adopts the double helix stirring conveyor.
3. line transportation filling system according to claim 1 is characterized in that, it is the seamless steel pipe of 110mm～150mm that described conveyance conduit (11) adopts caliber.
4. line transportation filling system according to claim 1 is characterized in that, described filling-up hydraulically pump (9) adopts double-cylinder hydraulic filling pump.
5. one kind is utilized the said line transportation filling system of claim 1 to the method that the filling stope carries out filling, it is characterized in that this method is specifically carried out according to the following steps:
Step 1: a line transportation filling system is installed, and this line transportation filling system comprises agitation tank (8), and agitation tank (8) is connected with mixer (7), water supply installation (6), filling-up hydraulically pump (9) and two feed hoppers respectively; Filling-up hydraulically pump (9) is connected with conveyance conduit (11), and conveyance conduit (11) also is connected with water washing device (12) with high-pressure blast transport (10) respectively;
Start water supply installation (6), water is sent into agitation tank (8), filling-up hydraulically pump (9) and conveyance conduit (11) successively, try the water;
Step 2: full tailings and barren rock are sent into two feed hoppers respectively;
Cement is sent into mixer (7), and stir that to obtain concentration be 65%～72% cement paste;
Step 3: water filling in agitation tank (8); Behind 1/3 material level of water to the agitation tank (8) in the agitation tank (8); Start agitation tank (8), add cement paste, full tailings and barren rock more successively, sending into the full tailings of agitation tank (8) and the weight ratio of barren rock is 1.5～2.5 ︰ 1; The instantaneous flow of full tailings and barren rock is 120t/h～140t/h, and the flow that cement paste is pressed 20t/h～30t/h adds agitation tank (8);
Step 4:, through water supply installation (6) adjustment of in agitation tank (8), supplying water, in agitation tank (8), form weight concentration and be barren rock-unclassified tailing filling materials slurry of 76%～81%;
Step 5: start filling-up hydraulically pump (9); Barren rock-unclassified tailing filling materials in the agitation tank (8) is delivered to the filling stope through conveyance conduit (11); This filling stope is carried out filling, and simultaneously, the flow of pressing 20～30t/h injects cement paste continuously in agitation tank (8); Continue in agitation tank (8), to add full tailings and barren rock by weight 1.5～2.5 ︰ 1; Full tailings is 120～140t/h with the instantaneous flow of barren rock, and continues to give agitation tank (8) adjustment of supplying water through water supply installation (6), and continuous formation weight concentration is that barren rock-unclassified tailing filling materials of 76%～81% is starched agitation tank (8) in; The barren rock that forms continuously in the agitation tank-unclassified tailing filling materials slurry is continued to be delivered to the filling stope, until the filling of accomplishing this filling stope;
Step 6: after filling is accomplished, start water washing device (12) earlier and clean conveyance conduit (11), restart high-pressure blast transport (10), conveyance conduit (11) is carried out wind and water combined cleaning, until conveyance conduit (11) is cleaned up.
6. placement method according to claim 5 is characterized in that, the particle diameter of barren rock is 16mm～20mm in the said step 2.
7. placement method according to claim 5 is characterized in that, contains 260Kg～280Kg cement in every cubic metre of barren rock of said step 4-unclassified tailing filling materials slurry.
8. placement method according to claim 5 is characterized in that, first water cleaned conveyance conduit 3 minutes～5 minutes in the said step 6.
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| CN2011103100493A CN102434204A (en) | 2011-10-13 | 2011-10-13 | Mine waste rock and all tailing pipeline conveying filling system and filling method using same |
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| CN2011103100493A CN102434204A (en) | 2011-10-13 | 2011-10-13 | Mine waste rock and all tailing pipeline conveying filling system and filling method using same |
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| CN111119894B (en) * | 2019-12-02 | 2021-07-13 | 南华大学 | Downward access filling mining method |
| CN113202550A (en) * | 2021-04-13 | 2021-08-03 | 中南大学 | Underground movable cement waste rock cemented filling system and method |
| CN113202550B (en) * | 2021-04-13 | 2022-05-10 | 中南大学 | Underground movable cement waste rock cemented filling system and method |
| CN114033483A (en) * | 2021-11-24 | 2022-02-11 | 安徽马钢矿业资源集团姑山矿业有限公司 | Construction method suitable for collapse pit tailing filling process |
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