CN112012788A - Tailing filling system based on mine slope and steep slope terrain and construction method - Google Patents
Tailing filling system based on mine slope and steep slope terrain and construction method Download PDFInfo
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- 238000011049 filling Methods 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000011835 investigation Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 11
- 239000002562 thickening agent Substances 0.000 claims description 10
- 238000005065 mining Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 238000002386 leaching Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21F15/08—Filling-up hydraulically or pneumatically
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21F15/08—Filling-up hydraulically or pneumatically
- E21F15/10—Hydraulic or pneumatic filling-up machines
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Abstract
The invention discloses a tailing filling system based on a mine slope and steep slope terrain and a construction method. The tailings filling system comprises a first-order platform high-level water supply system, a second-order platform tailings concentrating and dehydrating system, a third-order platform filtering tailings storage yard and a fourth-order platform filling slurry preparation system. The construction method comprises the following steps: selecting a steep slope with uniform and stable slope, and leveling a field tee joint; designing and constructing a pile foundation and a retaining wall according to the work investigation report and the load calculation; and carrying out filling equipment facility installation, factory building, public and auxiliary facility construction. The method fully utilizes the terrain of the inclined and steep slopes of the mountainous region, solves the problems of narrow industrial field and difficult site selection of the filling station on the gentle and flat surface of the mine, reduces excavation and elevating engineering, saves the amount of excavation and filling engineering, can realize self-flowing water supply in a plant area, positive feeding of the filtered tailings and self-flowing of filling slurry to a drill hole, and is favorable for improving the reliability of a filling system, reducing the energy consumption of operation and saving the system investment.
Description
Technical Field
The invention relates to the technical field of mine tailing filling, in particular to a tailing filling system based on a mine slope and steep slope terrain and a construction method.
Background
With the continuous promotion of the construction process of the green mine, the nonferrous metal underground mine generally starts to construct a tailing filling station, and the goaf is treated by tailing filling, so that the potential safety hazard of the goaf is eliminated, the discharge of solid wastes is reduced, and the surface environment is protected.
At present, most mines are constructed by selecting flat sites (below 5 ℃) or gentle slopes (5-15 ℃) to reduce the workload of the flat sites, but industrial sites with flat mine surfaces are commonNarrow and difficult to meet the requirement that the tailing filling system is as high as 5000-20000 m2The land requirement of the filling station needs a large amount of excavation and filling engineering quantity, equipment such as a high-level water tank, a thickener and the like still needs to be erected, and engineering such as an overflow water tank, a drilling pit and the like is excavated downwards, so that the conditions of upward pumping of factory water, reverse feeding of filtered tailings and low-pressure pumping of filling slurry to the drilling hole are generated, and the problems of large construction investment, high operation energy consumption, low system reliability and the like of the filling station are caused.
The invention provides a tailing filling system based on a mine slope steep slope (16-35 degrees) terrain and a construction method thereof, and aims to solve the problems that slope protection construction is difficult, safety risk is high, supporting difficulty is high and the like when a filling station is constructed on a steep slope with a gradient larger than 36 degrees. By fully utilizing the terrain of the inclined steep slope of the mine mountain land, the construction of excavation and elevation is reduced to the greatest extent, the engineering quantity of excavation and filling is saved, reverse conveying and feeding are avoided, and the problems of difficult site selection of filling stations, large construction investment, high operation energy consumption and low system reliability are solved.
Disclosure of Invention
The invention provides a tailing filling system based on a mine slope and steep slope terrain and a construction method thereof, aiming at solving the technical problems of narrow industrial field with a gentle mine surface, difficult site selection of a filling station, large excavating and filling engineering amount of a flat field and reverse water supply and sand conveying.
In order to achieve the technical purpose, the technical scheme of the invention is that,
a tailings filling system based on mine slope terrain and a construction method are characterized in that the filling system comprises: the system comprises a first-order platform high-level water supply system, a second-order platform tailing concentration and dehydration system, a third-order platform leaching tailing storage yard and a fourth-order platform filling slurry preparation system. The filling system construction method comprises the following steps:
step one, site selection of a filling station: the steep slope with uniform and stable slope is selected, so that the top of the steep slope is prevented from having a dangerous slope and dangerous rock mass, the bottom of the steep slope is prevented from being influenced by mining disturbance and a fracture structure, the requirements of convenient transportation and transportation, convenient water and power supply are met, the engineering and hydrogeological conditions are simple, the sand and water supply and return line is short, and the pipeline is convenient to lay;
step two, the station address tee joint is one: constructing a mountain winding road to each step of the inclined steep slope, performing excavation and filling operation, erecting water supply and drainage pipes and cables, and achieving water passage, electric passage, road passage and field leveling conditions on a construction site;
step three, pile foundation retaining wall construction: designing and constructing main equipment facilities of the filling station and pile foundation engineering of the factory building according to the geotechnical engineering investigation report and the bearing conditions of all steps; carrying out engineering design and construction of the first-fifth-order retaining wall according to the shape of the wall and the bearing condition of the base;
step four, equipment installation: a high-level water tank is constructed and installed on the first-order platform, a tailing concentrating and dewatering equipment facility is constructed and installed on the second-order platform, and a feeding, stirring and conveying equipment facility is constructed and installed on the fourth-order platform;
step five, building a workshop: building a tailing dewatering plant on the second-order platform, building a tailing storage yard on the third-order platform, building a filling plant on the fourth-order platform, and constructing a drilling pit;
step six, public and auxiliary facility construction: and performing combined trial run of flood-intercepting drainage ditch construction, slope soil covering and greening, auxiliary room construction, power distribution and illumination construction, instrument and meter installation, mechanical equipment debugging and automatic integrated control and filling system.
The first-order platform is higher than the second-order platform by more than 5m, and a high-level water tank and a water supply and drainage pipeline are arranged on the first-order platform, so that the self-flowing water supply can be performed on the whole tailing filling system.
The second-order platform is 5-10 m higher than the third-order platform, and tailing concentrating and dewatering equipment facilities such as a thickener and a filter are arranged on the second-order platform; the low-concentration tailing slurry produced by the plant selection is conveyed by a pipeline to directly feed to the top of the thickener, and the high-concentration bottom flow produced after the thickener is concentrated flows into the filter by gravity for dehydration.
The three-stage platform is higher than the four-stage platform by 8-15 m, the angle of a retaining wall between the second-stage platform and the three-stage platform is 50-70 degrees, and a tail sand piling shed is built on the three-stage platform and is provided with equipment facilities such as a scraper, a discharge hopper, a belt conveyor and the like; the filter tailings generated by the filter are slipped into a three-order platform storage yard by dead weight to be stored, and then are fed into a four-order platform filling workshop after being shoveled and loaded by a forklift and measured by a belt.
The four-step platform is level to the height of a factory road, and a filling factory building and a filling pit are built on the four-step platform and are provided with equipment facilities such as a cement bin, a stirring barrel and the like; the filter tailings, cement and water are uniformly stirred to prepare ideal filling slurry, the ideal filling slurry flows into the drilling pit automatically, and the ideal filling slurry is conveyed to fill the goaf through a pipeline.
In the first step, the gradient of the steep slope is uniform and stable, and the gradient is controlled to be between 16 and 35 degrees, wherein about 25 degrees is optimal.
In the second step, the slope of the winding mountain road is controlled within 15% to meet the requirement of automobile material transportation, and the outer edge of the second-order platform is intersected with the slope surface of the inclined steep slope to reduce the excavation engineering quantity.
And fifthly, the layout of the tailings filling system plant should meet the requirements of self-flowing water supply, tail sand filtering and positive feeding, and self-flowing filling slurry to the drill hole in the plant area.
The invention has the technical effects that the mine mountain land slope and steep slope landform is fully utilized to build the tailing filling station, the problems of common narrow industrial field with gentle mine surface and difficult site selection of the filling station are solved, the construction of the down-cut and overhead engineering can be reduced to the greatest extent, and the amount of the excavation and filling engineering is saved. Meanwhile, the layout of a factory building is optimized by utilizing the slope and steep slope terrain, so that the self-flowing water supply in a factory area, the forward feeding of the filtered tailings and the self-flowing of the filling slurry to the drill hole can be realized, the investment of a filling station is saved, the operation energy consumption is reduced, and the system reliability is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings which are needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained from the drawings without inventive labor to those skilled in the art.
FIG. 1 is a schematic view of a mine slope excavation and filling project and retaining wall arrangement;
FIG. 2 is a sectional view showing the layout of the construction equipment of the filling station on the multi-stage platform of the inclined and steep slope;
fig. 3 is a plan view of the layout of the construction equipment facilities of the filling station on the slope and steep slope multi-stage platform.
In the figure: 1-mine slope and steep slope; 2-excavation engineering; 3-filling engineering; 4-a first order platform; 5-a second order platform; 6-a third order platform; 7-fourth order platform; 8-first order retaining wall; 9-second order retaining wall; 10-third order retaining wall; 11-a fourth-step retaining wall; 12-fifth order retaining wall; 13-high water pool; 14-a thickener; 15-dehydration workshop; 16-filtering tailings; 17-tailing yard; 18-filling a workshop; 19-drilling a pit; 20-factory road; 21-side slope.
Detailed Description
The present invention is further illustrated by the following figures and examples, but the invention is not limited thereto in any way, and any variations or modifications based on the teachings of the present invention are within the scope of the present invention.
The invention discloses a tailing filling system based on a mine slope terrain and a construction method thereof. The specific construction method comprises the following steps:
step one, site selection of a filling station: selecting an inclined steep slope 1 with uniform and stable gradient, avoiding the top of the slope from having a dangerous slope and dangerous rock mass, and avoiding the bottom of the slope from being influenced by mining disturbance and fracture structure, and meeting the requirements of convenient transportation, convenient water supply and power supply, good engineering geological conditions, simple hydrogeological conditions, short sand supply and water return lines and convenient pipeline layout, as shown in figure 1;
step two, the station address tee joint is one: constructing a mountain winding plant area road 20 from the bottom of an inclined steep slope 1 and leading the mountain winding plant area road 20 to each step at the upper part, backfilling an excavation project 2 of a first-order platform 4, a second-order platform 5 and a third-order platform 6 as a filling project 3 of the third-order platform 6 and a fourth-order platform 7, erecting water supply and drainage pipes and cables to each step, and achieving water passing, electric passing, road passing and field leveling conditions on a construction site, which are shown in a figure 1 and a figure 3;
step three, pile foundation retaining wall construction: designing and constructing main equipment facilities of the filling station and pile foundation engineering of the factory building according to the geotechnical engineering investigation report and the bearing conditions of all steps; according to the form of the wall body and the bearing condition of the substrate, engineering design and construction of a first-order retaining wall 8, a second-order retaining wall 9, a third-order retaining wall 10, a fourth-order retaining wall 11 and a fifth-order retaining wall 12 are respectively carried out, and the figure 2 is shown;
step four, equipment installation: a high-level water tank 13 is constructed and arranged on the first-order platform 4, a tailing concentrating device 14 and a dewatering equipment facility are constructed and arranged on the second-order platform 5, and a feeding, stirring and conveying equipment facility is constructed and arranged on the fourth-order platform 7, as shown in fig. 2 and fig. 3;
step five, building a workshop: a tailing dewatering factory building 15 is built on the second-order platform 5, a tailing storage yard 17 is built on the third-order platform 6, a filling factory building 18 is built on the fourth-order platform 7, and a drilling pit 19 is constructed. Optimizing the layout of a factory building, forming a high-level water tank 13 which automatically flows from the first-order platform 4 to supply production and fire-fighting water to a lower platform, concentrating and dewatering low-concentration tailings from the second-order platform 5, then sliding the concentrated and dewatered tailings to a tailing yard 17 of the third-order platform 6 by self weight for stockpiling, and draining tailings 16 to fill the factory building 18 of the lower fourth-order platform 7, and automatically flowing to a drilling pit 19 after uniform stirring and pulping, wherein the water is shown in fig. 2 and 3;
step six, public and auxiliary facility construction: after the installation of main equipment facilities and the construction of a factory building are finished, the combined trial operation of the flood interception drainage ditch construction, the soil covering and greening of the side slope 21, the construction of an auxiliary room, the power distribution and illumination construction, the installation of instruments and meters, the debugging of mechanical equipment, the automatic integrated control and filling system is carried out, and the combined trial operation is shown in figure 3.
Taking a gold mine in Henan as an example, the mining area is deep in Qinling mountain Funiu mountain, the surface of the mining area is wavy, the available industrial field is narrow, and the site selection of a filling station is difficult. The method is adopted to select the slope terrain to build the energy-saving and environment-friendly tailing filling station.
Firstly, site selection of a filling station: selecting a steep slope with a slope stable at about 25 degrees at the +974m elevation of a mining area, wherein the top of the steep slope is free of a dangerous slope and dangerous rock mass, the bottom of the steep slope is free of mining disturbance and fracture structure influence, the transportation is convenient, the water supply and power supply are convenient, the engineering geology and hydrogeology conditions are simple, the sand supply and water return line is short, and the pipeline layout is convenient;
secondly, station site tee bend one is flat with pile foundation retaining wall construction: the highway of the winding plant area with the construction gradient of 15% is communicated with a +980m first-order platform, a +974m second-order platform, a +964m third-order platform and a +954m fourth-order platform. Carrying out excavation and filling engineering construction on each step, wherein the total excavation and filling amount is basically equal, erecting water supply and drainage pipes and cables to each step, and achieving water passage, electric passage, channel passage and field leveling conditions on a construction site; designing and constructing main equipment facilities of the filling station and pile foundation engineering of the factory building according to the geotechnical engineering investigation report and the bearing conditions of all steps; according to the form of the wall body and the bearing condition of the base, the engineering design and construction of the first-order to fifth-order retaining wall are respectively carried out;
then, equipment installation and plant building: high-level water tank with the installation volume of 200m is planted on the first-order platform, a high-efficiency thickener with the diameter of 12m and two high-efficiency thickeners with the filtration area of 80m are installed on the second-order platform in a construction mode2The ceramic filter and the construction of a filtration plant are carried out, a tailing yard with the volume of 1350m is constructed on a third-order platform, a suspension type vibrating feeder, a belt conveyor with the length of 16m, a cement bin with the volume of 60t, a stirring barrel with the diameter of phi 2000mm and other equipment are constructed and installed on a fourth-order platform, and a filling plant and a drilling pit are constructed;
and finally, constructing public and auxiliary facilities: after the installation of main equipment facilities and the construction of a factory building are finished, the combined test operation of a flood interception drainage ditch construction, slope soil covering and greening, auxiliary room construction, power distribution and illumination construction, instrument and meter installation, mechanical equipment debugging, automatic integrated control and filling system is carried out.
After normal operation, the capacity of the filling system is 60m3Production and fire-fighting water can be automatically fed to a lower platform from a first-order platform, low-concentration tailing slurry is concentrated and dehydrated from a second-order step, a third-order platform is stacked and stored, and a fourth-order platformAfter stirring and pulping, the slurry can automatically flow to a drilling pit and enter a goaf, the total investment of a filling system is only 1500 ten thousand yuan, and the energy consumption of operation is extremely low.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been described with reference to the above embodiments, it should be understood that the invention is not limited to the details of construction and operation, but is capable of numerous modifications and equivalents, including those set forth herein, which may vary from the details of the disclosed method and apparatus, without departing from the scope of the present invention.
Claims (9)
1. A tailings filling system based on mine slope terrain and a construction method are characterized in that the tailings filling system comprises: the system comprises a first-order platform high-level water supply system, a second-order platform tailing concentration and dehydration system, a third-order platform leaching tailing storage yard and a fourth-order platform filling slurry preparation system.
2. A tailing filling system based on a mine slope terrain and a construction method are characterized in that the construction method of the tailing filling system comprises the following steps:
step one, site selection of a filling station: the steep slope with uniform and stable slope is selected, so that the top of the steep slope is prevented from having a dangerous slope and dangerous rock mass, the bottom of the steep slope is prevented from being influenced by mining disturbance and a fracture structure, the requirements of convenient transportation and transportation, convenient water and power supply are met, the engineering and hydrogeological conditions are simple, the sand and water supply and return line is short, and the pipeline is convenient to lay;
step two, the station address tee joint is one: constructing a mountain winding road to each step of the inclined steep slope, performing excavation and filling operation, erecting water supply and drainage pipes and cables, and achieving water passage, electric passage, road passage and field leveling conditions on a construction site;
step three, pile foundation retaining wall construction: designing and constructing main equipment facilities of the filling station and pile foundation engineering of the factory building according to the geotechnical engineering investigation report and the bearing conditions of all steps; carrying out engineering design and construction of the first-fifth-order retaining wall according to the shape of the wall and the bearing condition of the base;
step four, equipment installation: a high-level water tank is constructed and installed on the first-order platform, a tailing concentrating and dewatering equipment facility is constructed and installed on the second-order platform, and a feeding, stirring and conveying equipment facility is constructed and installed on the fourth-order platform;
step five, building a workshop: building a tailing dewatering plant on the second-order platform, building a tailing storage yard on the third-order platform, building a filling plant on the fourth-order platform, and constructing a drilling pit;
step six, public and auxiliary facility construction: and performing combined trial run of flood-intercepting drainage ditch construction, slope soil covering and greening, auxiliary room construction, power distribution and illumination construction, instrument and meter installation, mechanical equipment debugging and automatic integrated control and filling system.
3. The mine slope terrain-based tailings filling system and construction method of claim 1, wherein the first-order platform is higher than the second-order platform by more than 5m, and a high-level water tank and a water supply and drainage pipeline are arranged on the first-order platform, so that the whole tailings filling system can be automatically supplied with water.
4. The mine slope abrupt slope terrain-based tailing filling system and the construction method thereof as claimed in claim 1, wherein the second-order platform is 5-10 m higher than the third-order platform, and tailing concentration and dehydration equipment facilities such as a thickener and a filter are arranged on the second-order platform; the low-concentration tailing slurry produced by the plant selection is conveyed by a pipeline to directly feed to the top of the thickener, and the high-concentration bottom flow produced after the thickener is concentrated flows into the filter by gravity for dehydration.
5. The mine slope-slope terrain-based tailing filling system and the construction method thereof as claimed in claim 1, wherein the third-order platform is higher than the fourth-order platform by 8-15 m, the angle of the retaining wall between the second-order platform and the third-order platform is 50-70 degrees, and a tailing piling shed is built on the third-order platform and is provided with equipment facilities such as a scraper, a discharge hopper and a belt conveyor; the filter tailings generated by the filter are slipped into a three-order platform storage yard by dead weight to be stored, and then are fed into a four-order platform filling workshop after being shoveled and loaded by a forklift and measured by a belt.
6. The mine slope abrupt slope terrain-based tailings filling system and the construction method thereof according to claim 1, wherein the four-step platform is level with the height of a factory road, and a filling factory building and a filling pit are built on the four-step platform, and are provided with equipment facilities such as a cement bin and a mixing barrel; the filter tailings, cement and water are uniformly stirred to prepare ideal filling slurry, the ideal filling slurry flows into the drilling pit automatically, and the ideal filling slurry is conveyed to fill the goaf through a pipeline.
7. The mine slope-terrain-based tailings filling system and construction method of claim 2, wherein in the first step, the slope of the slope is relatively uniform and stable, and the slope is controlled to be between 16-35 degrees, wherein about 25 degrees is optimal.
8. The mine slope abrupt slope terrain-based tailings filling system and construction method of claim 2, wherein in the second step, the slope of the mountain road should be controlled within 15% to meet the requirement of automobile transportation materials, and the outer edge of the second-order platform should intersect with the slope surface of the slope abrupt slope to reduce excavation engineering quantity.
9. The mine slope terrain-based tailings filling system and construction method according to claim 2, wherein in the fifth step, the layout of a tailings filling system plant should meet the requirements of self-flowing water supply, positive tailing feed for leaching and self-flowing filling slurry to a drill hole.
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