CN102418555A - Method for filling mine goaf by utilizing high-concentration all tailing cement - Google Patents
Method for filling mine goaf by utilizing high-concentration all tailing cement Download PDFInfo
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- CN102418555A CN102418555A CN2011102304455A CN201110230445A CN102418555A CN 102418555 A CN102418555 A CN 102418555A CN 2011102304455 A CN2011102304455 A CN 2011102304455A CN 201110230445 A CN201110230445 A CN 201110230445A CN 102418555 A CN102418555 A CN 102418555A
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Abstract
The invention discloses a method for filling a mine goaf by utilizing a high-concentration all tailing cement. The method comprises the following steps: conveying beneficiation tailing sand pulp to a horizontal sand silo through a pipe so as to be stored, precipitating, overflowing and pulping based on air injection; storing and feeding cements; mixing and stirring for pulping; controlling facilities in a technical process; and blowing a prepared sand pulp filler to a stope for filling by virtue of gravity feed and air injection through drill holes and underground pipe networks, thus reducing the filling cost. By utilizing the method disclosed by the invention, the final concentration of tailing sand filled in the goaf reaches 70-80%, water logging at the goaf can be effectively prevented, the pressure at the bottom of the goaf is reduced, not only can the support function be enhanced, but also the safety factor is high, the production capacity of the stope is enhanced, the resource utilization rate is improved, and higher economic benefits and social benefits are brought.
Description
Technical field
The present invention relates to the method that tailings utilizes in a kind of iron ore mining industry, specifically is to utilize adopting iron ore tailings to the underground goaf placement method.
Background technology
The mine worked-out section backfill is directly to utilize one of effective way of mine tailing.Though existing tailing cemented filling has higher production capacity and good line transportation characteristic,, filling cost is increased owing to use a large amount of cement as adhesive material; And limited by the pipe gravity flow pipeline transportation concentration; After common tailing cemented filling mass concentration not high (generally below 65%) charged into stope, a large amount of moisture content must be implemented to discharge through drainage, has not only increased effluent cost; Polluted subsurface environment; And reduced the intensity of obturation, and can not play the effect of supporting rock mass, reduce the back production safety factor.
Summary of the invention
In order to make mine worked-out section better obtain backfill, the invention provides the method in goaf under the high concentration all-tailing cemented filling mine.
The present invention adopts following technical scheme to achieve these goals:
The method in goaf under a kind of high concentration all-tailing cemented filling mine is characterized in that may further comprise the steps:
(1) full tailings is carried
The full tailings in ore dressing plant is sent into the horizontal sand of Filling Station storehouse, and filling needs the insufficient section of tailings to be replenished by the tailings storehouse, and sand is got in the tailings storehouse has two kinds of methods: the one, get dry sand, and transport Filling Station sand storehouse to by belt or dump truck; The 2nd, in the tailings storehouse, make 40%～50% concentration stock pump and go into the row deposition dehydration again of the horizontal sand of Filling Station storehouse;
(2) full last mortar preparation
Get into the full tailings and the last mortar in the horizontal sand of Filling Station storehouse; In the sand storehouse, carry out natural subsidence, overflow dehydration; Overflow water flows into back pool and sewage purification station, ore dressing plant by overflow pipe; After treating that sand storehouse full tailings sedimentation concentration reaches about 68%; Full tailings in the pond calmed the anger make slurry 30～40min; Calm the anger make slurry evenly after, can open the sand storehouse and put the sand valve, supply mortar by pipeline to mixer;
(3) cement seasoning
All-tailing cemented filling material is used Portland cement always, and revolution speed of screw is regulated by variable-frequency governor, and weighing type spiral feeder feeding coal is 10～20t/h, necessary electromotor power 3.5-4kw;
(4) goaf filling under preparation of filling slurry and the mine
Full last mortar and cement quantitatively get into mixer and stir system filling slurry through putting sandpipe and weighing type spiral feeder respectively, and cement is 1 with the mixed proportion of full last mortar: 6-12 makes that filling slurry mass concentration is 70.8%～73.6%; Under mine, lay the sediment transport pipeline on the goaf, insert Filling Station, the filling slurry is squeezed into goaf under the mine through Filling Station; On the sediment transport pipeline, install and press the wind arm; Press the wind arm to be provided with non retern valve and ball valve, press wind arm and horizontal sediment transport pipe to be 30 ° of angles, when the sediment transport pipeline is squeezed into the filling slurry; Through pressing the wind arm to charge into Compressed Gas, promote the filling slurry and get into the goaf; Simultaneously under mine on the goaf, especially lay extraction well on the edge, goaf; On extraction well, establish air exhauster; In the defeated filling slurry in goaf under mine, constantly bleeding forms the goaf negative pressure, helps the filling slurry to the filling of stretching of edge zone, goaf.
Detect the slurry preparation quality in the described step (4) and one section detector tube also is set in slurry outlet bottom; Electromagnetic Flow is installed on the detector tube is taken into account that nuclear density meter carries out flow and concentration detects, get into the gravity flow of filling borehole and Underground Backfilling Pipe Network then and be delivered to the dead zone, down-hole and carry out filling.
Under mine, establish coal gas on the goaf and carry well; Coal gas is carried in the well gas pipeline is installed; The gas pipeline front end is equipped with the gas-fired kitchen range, when the sediment transport pipeline is squeezed into the filling slurry, through gas-fired kitchen range point coal gas; Constantly consume the oxygen in the goaf, to form negative pressure in the goaf.
Beneficial effect of the present invention:
The present invention has reduced filling cost, makes goaf filling tailings ultimate density reach 70-80%, effectively prevents goaf ponding, reduces the pressure of bottom, goaf; It is high not only to have reinforced supporting role but also back production safety factor, has strengthened the production capacity of stope, has improved resource utilization, brings bigger economic benefit and social benefit.
Description of drawings
Fig. 1 process chart of the present invention.
The specific embodiment
Embodiment 1: high concentration all-tailing cemented filling method may further comprise the steps:
(1) full tailings is carried
Select the full tailings of factory to send into horizontal sand storehouse, the elected last person of factory mouth pulp consistency is low excessively, and volume is excessive, can the threeway of last person's mouth be inserted tailings storehouse, ground when surpassing the sand holding capacity of bin.Filling needs the insufficient section of tailings to be replenished by the tailings storehouse, and sand is got in the tailings storehouse has two kinds of methods: the one, get dry sand, and transport Filling Station sand storehouse to by belt or dump truck; The 2nd, slurrying in the tailings storehouse (40%～50% concentration) pumps into the row deposition dehydration again of Filling Station sand storehouse;
(2) full last mortar preparation
By selecting the tailings in factory's last mortar and the tailings storehouse to get into the horizontal sand of Filling Station storehouse together; In the sand storehouse, carry out natural subsidence, overflow dehydration; Overflow water flows into back pool and selects factory sewage clarification station through bleed off pipe; After treating that Sha Cang ore deposit tailings sedimentation concentration reaches about 68%, make sizing device through calming the anger and full tailings in the pond is carried out activation make slurry; Make sizing device and comprise air compressor machine, total blast pipe, air intake arm, valve, electromagnetic valve and calm the anger and make slurry nozzle etc.,
By the concentration of selecting factory or tailings storehouse to transport 15%～40% full last mortar or dried tailings; Supply sand through the emptying point, many places to the sand storehouse; Treat in the sand storehouse after the full last mortar sedimentation and water level surpasses overfall, then open the overflow valve on the relevant position on the sidewall of sand storehouse, get rid of the ponding on tailings face top in the sand storehouse; Ponding flows into the usefulness that back pool supplies to mix slurry and cleaning, unnecessary water return select in factory's storage cistern subsequent use.
After treating that the ponding on tailings face top has been arranged entirely in the sand storehouse, can open each row pressure gas in order and make the slurry nozzle, full last mortar in the pond calmed the anger make slurry; About 30～40min of time; Calm the anger make slurry evenly after, can open the sand storehouse and put the sand valve, supply mortar through pipeline to mixer.Put during the sand that to make the slurry nozzle in running order all the time near putting sand end two row pressure gas, all the other then successively circulation open, the whole slurry process of making all adopts automatic control.
In order to detect and control the feed amount of full last mortar, at the vertical section of putting sandpipe densometer is installed, electromagnetic flowmeter and electrical clip pipe valve; The mixer upper end also is equipped with ultrasonic content gauge; Detect tailings concentration respectively, flow and liquid level, and carry out flow and concentration control.The mixer specification is φ 3.0 * 3.5m, motor 37km, production capacity 100m
3/ h; The mixer end opening is inserted in the funnel of filling borehole top by pipeline.
(3) cement seasoning
All-tailing cemented filling material is used 42.5 grades of Portland cements always, and cement is transported to Filling Station through bulk cement tanker, with pressing wind to be discharged in the cement silo by Cang Ding.Cement silo is a welded steel plate, diameter phi 6.0m, high 16.0m, high 7.5m more than the face of land, cement silo dischargeable capacity 350m
3, can contain cement 455t, the cement bin top is provided with sack cleaner, radar level gauge etc.Plate, pinwheel dispenser and the weighing type spiral feeder of scalable flow is equipped with in the cement bin bottom, and to the quantitative continuous-feeding of mixer, revolution speed of screw is regulated by variable-frequency governor, to satisfy the proportion design requirement.Weighing type spiral feeder feeding coal is 10～20t/h, necessary electromotor power 4kw.
(4) casting resin preparation
Full last mortar and cement quantitatively get into mixer and carry out stirring pulping through putting sandpipe and weighing type spiral feeder respectively.In order to detect the slurry preparation quality; In slurry outlet bottom one section detector tube is set also; Electromagnetic Flow is installed on the detector tube is taken into account that nuclear density meter carries out flow and concentration detects, get into the gravity flow of filling borehole and Underground Backfilling Pipe Network then and be delivered to the dead zone, down-hole and carry out filling.
In order to reduce the negative effect of water to the slurry filling quality, it is main that pipeline adopts to calm the anger, and water is the water-gas combined cleaning of assisting, and Filling Station is set up pressure ventilation pipe and gate valve.The down-hole horizontal pipeline is installed above the sediment transport pipeline and is pressed the wind arm then by a determining deviation, and arm is provided with non retern valve and ball valve.Press wind arm and horizontal sediment transport pipe to be 30 ° of angles.
Example 2
The method in goaf under the high concentration all-tailing cemented filling mine may further comprise the steps:
(1) full tailings is carried
The full tailings in ore dressing plant is sent into the horizontal sand of Filling Station storehouse, and filling needs the insufficient section of tailings to be replenished by the tailings storehouse, and sand is got in the tailings storehouse has two kinds of methods: the one, get dry sand, and transport Filling Station sand storehouse to by belt or dump truck; The 2nd, in the tailings storehouse, make 40%～50% concentration stock pump and go into the row deposition dehydration again of the horizontal sand of Filling Station storehouse;
(2) full last mortar preparation
Get into the full tailings and the last mortar in the horizontal sand of Filling Station storehouse; In the sand storehouse, carry out natural subsidence, overflow dehydration; Overflow water flows into back pool and sewage purification station, ore dressing plant by overflow pipe; After treating that sand storehouse full tailings sedimentation concentration reaches about 68%; Full tailings in the pond calmed the anger make slurry 30～40min; Calm the anger make slurry evenly after, can open the sand storehouse and put the sand valve, supply mortar by pipeline to mixer;
(3) cement seasoning
All-tailing cemented filling material is used Portland cement always, and revolution speed of screw is regulated by variable-frequency governor, and weighing type spiral feeder feeding coal is 10～20t/h, necessary electromotor power 3.5-4kw;
(4) goaf filling under preparation of filling slurry and the mine
Full last mortar and cement quantitatively get into mixer and stir system filling slurry through putting sandpipe and weighing type spiral feeder respectively, and cement is 1 with the mixed proportion of full last mortar: 6-12 makes that filling slurry mass concentration is 70.8%～73.6%; Under mine, lay the sediment transport pipeline on the goaf, insert Filling Station, the filling slurry is squeezed into goaf under the mine through Filling Station; On the sediment transport pipeline, install and press the wind arm; Press the wind arm to be provided with non retern valve and ball valve, press wind arm and horizontal sediment transport pipe to be 30 ° of angles, when the sediment transport pipeline is squeezed into the filling slurry; Through pressing the wind arm to charge into Compressed Gas, promote the filling slurry and get into the goaf; Simultaneously under mine on the goaf, especially lay extraction well on the edge, goaf; On extraction well, establish air exhauster; In the defeated filling slurry in goaf under mine, constantly bleeding forms the goaf negative pressure, helps the filling slurry to the filling of stretching of edge zone, goaf.
Under mine, establish coal gas on the goaf and carry well; Coal gas is carried in the well gas pipeline is installed; The gas pipeline front end is equipped with the gas-fired kitchen range, when the sediment transport pipeline is squeezed into the filling slurry, through gas-fired kitchen range point coal gas; Constantly consume the oxygen in the goaf, to form negative pressure in the goaf.
Claims (3)
1. the method in goaf under the high concentration all-tailing cemented filling mine is characterized in that may further comprise the steps:
(1) full tailings is carried
The full tailings in ore dressing plant is sent into the horizontal sand of Filling Station storehouse, and filling needs the insufficient section of tailings to be replenished by the tailings storehouse, and sand is got in the tailings storehouse has two kinds of methods: the one, get dry sand, and transport Filling Station sand storehouse to by belt or dump truck; The 2nd, in the tailings storehouse, make 40%～50% concentration stock pump and go into the row deposition dehydration again of the horizontal sand of Filling Station storehouse;
(2) full last mortar preparation
Get into the full tailings and the last mortar in the horizontal sand of Filling Station storehouse; In the sand storehouse, carry out natural subsidence, overflow dehydration; Overflow water flows into back pool and sewage purification station, ore dressing plant by overflow pipe; After treating that sand storehouse full tailings sedimentation concentration reaches about 68%; Full tailings in the pond calmed the anger make slurry 30～40min; Calm the anger make slurry evenly after, can open the sand storehouse and put the sand valve, supply mortar by pipeline to mixer;
(3) cement seasoning
All-tailing cemented filling material is used Portland cement always, and revolution speed of screw is regulated by variable-frequency governor, and weighing type spiral feeder feeding coal is 10～20t/h, necessary electromotor power 3.5-4kw;
(4) goaf filling under preparation of filling slurry and the mine
Full last mortar and cement quantitatively get into mixer and stir system filling slurry through putting sandpipe and weighing type spiral feeder respectively, and cement is 1 with the mixed proportion of full last mortar: 6-12 makes that filling slurry mass concentration is 70.8%～73.6%; Under mine, lay the sediment transport pipeline on the goaf, insert Filling Station, the filling slurry is squeezed into goaf under the mine through Filling Station; On the sediment transport pipeline, install and press the wind arm; Press the wind arm to be provided with non retern valve and ball valve, press wind arm and horizontal sediment transport pipe to be 30 ° of angles, when the sediment transport pipeline is squeezed into the filling slurry; Through pressing the wind arm to charge into Compressed Gas, promote the filling slurry and get into the goaf; Simultaneously under mine on the goaf, especially lay extraction well on the edge, goaf; On extraction well, establish air exhauster; In the defeated filling slurry in goaf under mine, constantly bleeding forms the goaf negative pressure, helps the filling slurry to the filling of stretching of edge zone, goaf.
2. high concentration all-tailing cemented filling method according to claim 1; It is characterized in that: detect the slurry preparation quality in the described step (4) and one section detector tube also is set in slurry outlet bottom; Electromagnetic Flow is installed on the detector tube is taken into account that nuclear density meter carries out flow and concentration detects, get into the gravity flow of filling borehole and Underground Backfilling Pipe Network then and be delivered to the dead zone, down-hole and carry out filling.
3. high concentration all-tailing cemented filling method according to claim 1; It is characterized in that: under mine, establish coal gas on the goaf and carry well, coal gas is carried in the well gas pipeline is installed, and the gas pipeline front end is equipped with the gas-fired kitchen range; When the sediment transport pipeline is squeezed into the filling slurry; Through gas-fired kitchen range point coal gas, constantly consume the oxygen in the goaf, to form negative pressure in the goaf.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979571A (en) * | 2012-12-08 | 2013-03-20 | 山东汇发矿业科技有限公司 | All tailing sand dry discharge bonding filling system and filling method of filling system |
| CN103939139A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Equipment matching method for solid-filling coal face of coal mine |
| CN104005787A (en) * | 2014-04-01 | 2014-08-27 | 广东盛瑞土建科技发展有限公司 | Tailings concentration feeding method and device for implementing method |
| CN104500133A (en) * | 2014-12-20 | 2015-04-08 | 孙宸 | Total-tailings gravity settling type filling system and method |
| CN106065782A (en) * | 2016-05-30 | 2016-11-02 | 安徽开发矿业有限公司 | A kind of big flow high concentration structure stream full tail sand cemented filling technique |
| CN106626056A (en) * | 2016-11-29 | 2017-05-10 | 攀枝花市九鼎智远知识产权运营有限公司 | Preparation equipment and preparation method for quartz sand slurry |
| CN107515179A (en) * | 2017-08-30 | 2017-12-26 | 玉溪大红山矿业有限公司 | A kind of settling test method of fine-grained disseminated grain iron ore flocculant |
| CN108005718A (en) * | 2017-12-18 | 2018-05-08 | 固岩科技发展有限公司 | A kind of metal mine consolidated fill method |
| CN108252734A (en) * | 2017-12-18 | 2018-07-06 | 金川集团股份有限公司 | A kind of placement method of Desending slicing Drift stoping underground goaf |
| CN108501221A (en) * | 2018-04-09 | 2018-09-07 | 长沙矿山研究院有限责任公司 | Filling slurry Preparation equipment, technique and filling system |
| CN108590748A (en) * | 2018-05-22 | 2018-09-28 | 长沙矿山研究院有限责任公司 | Tailings reconstruction slurry filling system and technique |
| CN108915765A (en) * | 2018-07-02 | 2018-11-30 | 北京科技大学 | A kind of underground crude tailings-barren rock Paste-filling System and placement method |
| CN109973142A (en) * | 2019-03-29 | 2019-07-05 | 新汶矿业集团有限责任公司 | A kind of pair of underworkings carries out the method and filling system of sold stowing |
| CN110030032A (en) * | 2019-04-03 | 2019-07-19 | 长沙矿山研究院有限责任公司 | The method that tailing slurry shunts partially dehydrated regulation filling slurry preparation concentration |
| CN110821558A (en) * | 2019-11-16 | 2020-02-21 | 中国水利水电第九工程局有限公司 | Preparation method of filling slurry in mine goaf |
| CN111775337A (en) * | 2020-07-29 | 2020-10-16 | 中钢集团马鞍山矿山研究总院股份有限公司 | Combined type dry material hauling accurate conveying and filling station suitable for mine filling system |
| CN112502771A (en) * | 2020-11-10 | 2021-03-16 | 西北矿冶研究院 | Efficient dehydration method for underground mining filling body |
| CN114474406A (en) * | 2022-02-18 | 2022-05-13 | 中冶沈勘工程技术有限公司 | High-concentration full-tailing cemented filling system |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979571A (en) * | 2012-12-08 | 2013-03-20 | 山东汇发矿业科技有限公司 | All tailing sand dry discharge bonding filling system and filling method of filling system |
| CN104005787A (en) * | 2014-04-01 | 2014-08-27 | 广东盛瑞土建科技发展有限公司 | Tailings concentration feeding method and device for implementing method |
| CN103939139A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Equipment matching method for solid-filling coal face of coal mine |
| CN103939139B (en) * | 2014-04-25 | 2016-01-06 | 中国矿业大学 | A kind of colliery solid filling coal-face coordinative composition of equipments method |
| CN104500133A (en) * | 2014-12-20 | 2015-04-08 | 孙宸 | Total-tailings gravity settling type filling system and method |
| CN106065782A (en) * | 2016-05-30 | 2016-11-02 | 安徽开发矿业有限公司 | A kind of big flow high concentration structure stream full tail sand cemented filling technique |
| CN106626056A (en) * | 2016-11-29 | 2017-05-10 | 攀枝花市九鼎智远知识产权运营有限公司 | Preparation equipment and preparation method for quartz sand slurry |
| CN107515179B (en) * | 2017-08-30 | 2020-07-07 | 玉溪大红山矿业有限公司 | Sedimentation test method of flocculant for fine-grained embedded iron ore |
| CN107515179A (en) * | 2017-08-30 | 2017-12-26 | 玉溪大红山矿业有限公司 | A kind of settling test method of fine-grained disseminated grain iron ore flocculant |
| CN108005718A (en) * | 2017-12-18 | 2018-05-08 | 固岩科技发展有限公司 | A kind of metal mine consolidated fill method |
| CN108252734A (en) * | 2017-12-18 | 2018-07-06 | 金川集团股份有限公司 | A kind of placement method of Desending slicing Drift stoping underground goaf |
| CN108501221A (en) * | 2018-04-09 | 2018-09-07 | 长沙矿山研究院有限责任公司 | Filling slurry Preparation equipment, technique and filling system |
| CN108590748A (en) * | 2018-05-22 | 2018-09-28 | 长沙矿山研究院有限责任公司 | Tailings reconstruction slurry filling system and technique |
| CN108590748B (en) * | 2018-05-22 | 2024-04-16 | 长沙矿山研究院有限责任公司 | Tailing reconstituted slurry filling system and process |
| CN108915765A (en) * | 2018-07-02 | 2018-11-30 | 北京科技大学 | A kind of underground crude tailings-barren rock Paste-filling System and placement method |
| CN108915765B (en) * | 2018-07-02 | 2020-10-09 | 北京科技大学 | Underground full tailing-waste stone paste filling system and filling method |
| CN109973142A (en) * | 2019-03-29 | 2019-07-05 | 新汶矿业集团有限责任公司 | A kind of pair of underworkings carries out the method and filling system of sold stowing |
| CN110030032A (en) * | 2019-04-03 | 2019-07-19 | 长沙矿山研究院有限责任公司 | The method that tailing slurry shunts partially dehydrated regulation filling slurry preparation concentration |
| CN110821558A (en) * | 2019-11-16 | 2020-02-21 | 中国水利水电第九工程局有限公司 | Preparation method of filling slurry in mine goaf |
| CN111775337A (en) * | 2020-07-29 | 2020-10-16 | 中钢集团马鞍山矿山研究总院股份有限公司 | Combined type dry material hauling accurate conveying and filling station suitable for mine filling system |
| CN112502771A (en) * | 2020-11-10 | 2021-03-16 | 西北矿冶研究院 | Efficient dehydration method for underground mining filling body |
| CN112502771B (en) * | 2020-11-10 | 2023-05-23 | 西北矿冶研究院 | Efficient dehydration method for underground mining filling body |
| CN114474406A (en) * | 2022-02-18 | 2022-05-13 | 中冶沈勘工程技术有限公司 | High-concentration full-tailing cemented filling system |
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