CN111828007B - Stoping method for residual studs in underground mine goaf - Google Patents
Stoping method for residual studs in underground mine goaf Download PDFInfo
- Publication number
- CN111828007B CN111828007B CN202010746889.3A CN202010746889A CN111828007B CN 111828007 B CN111828007 B CN 111828007B CN 202010746889 A CN202010746889 A CN 202010746889A CN 111828007 B CN111828007 B CN 111828007B
- Authority
- CN
- China
- Prior art keywords
- ore
- stud
- roadway
- layered
- stoping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000011435 rock Substances 0.000 claims abstract description 48
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 238000005422 blasting Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 238000005065 mining Methods 0.000 claims description 26
- 230000005641 tunneling Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010790 dilution Methods 0.000 abstract description 7
- 239000012895 dilution Substances 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000010878 waste rock Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- General Engineering & Computer Science (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a stoping method of a remaining stud in a goaf of an underground mine, wherein an ore removal tunnel is tunneled in a lateral stud (16) of a middle-section haulage tunnel (1) to reach an ore body hanging wall, and a fan-shaped medium-length hole is adopted to expand the top of the ore removal tunnel to form a bell-mouth-shaped bottom structure; cutting patios (12) and pedestrian ventilation patios (3) are respectively arranged on the wall mine rock contact surface on the stud and in the wall rock on the lower wall, and are communicated with the upper and middle section return air tunnels, and layered communication tunnels (9) are tunneled in the pedestrian ventilation patios (3) at a certain height interval along the vertical direction to reach the boundary of the lower wall of the stud. And then, circularly drilling upward parallel blast holes (11), charging and blasting, forced ventilation and caving ore (7) from bottom to top layer by layer one by one until the whole pillar is completely mined, and then completely discharging the caving ore (7) by using a scraper and filling a goaf, so that the pillar ore recovery rate is improved, the ore dilution rate is reduced, and the working environment of a working face is improved.
Description
Technical Field
The invention belongs to the technical field of underground mine exploitation, and particularly relates to a stoping method of a residual stud in a goaf of an underground mine.
Background
The mining technical conditions of the underground residual ore pillars are extremely complex, and the mining technical conditions are a great problem in the current mining technology. At present, when a plurality of mines recover residual ore resources, the expected effect is often not achieved due to the technical or economic difficulties.
At present, most underground mines at home and abroad develop mineral resources by using an open-stope subsequent filling mining method, and no matter a shallow hole shrinkage stope subsequent filling mining method or a sublevel open-stope subsequent filling mining method, ore blocks are divided into ore rooms and studs, and the ore rooms are firstly stoped and filled and then the studs are stoped. The mining method is mainly applicable to: firstly, the ore and the surrounding rock are stable and do not fall down naturally in the stoping process; the thickness of the ore body is preferably thin or medium thick; the dip angle of the ore body is over the steep dip; the ore has no caking and naturalness; the surface is not allowed to collapse. Since the advent, the mining method has been popularized and applied in many mines, and still many mines are using the mining method at the present stage, such as Huangshan lead-zinc-gold-silver ore of Shandong Jinxitai group, Fengyang Jinpeng mining industry of Anhui, lead-zinc-gold-silver ore of Jiangsu gold-flame Aijing mountain, strontium ore of Yunan copper factory, etc.
When a mine is divided into a room and a stud, a dividing method with a large room proportion and a small stud proportion is generally selected, so that the defects of low ore production efficiency, high ore dilution rate, poor operation safety and the like are inevitably caused when the stoping of the room is finished and the stud is stoped after filling, the safety and high-efficiency mining of the stud is difficult to realize, and particularly, the stud mining always troubles many mine enterprises when rare metals, precious metals and high-grade ore vein are mined. In view of the above difficulties, many mines are forced to abandon the recovery pillars, so that a large number of pillars are left after the stoping of the chamber is finished, and natural mineral resources are seriously wasted.
A finite element analysis program is adopted in a goaf ore pillar safety stoping technology and practice published in the No. 7 of metal mines 2008 to analyze stress of a goaf roof and surrounding rock masses in the stoping process, and a stoping scheme is demonstrated, and results show that (1) ore pillar stoping of 'mining one and one' is carried out, the maximum main stress is in the failure strength of rocks, the goaf is enlarged and influenced by weathering, surrounding rocks of the roof can generate local bulk caving, the bulk caving cannot be developed, and the influence on the ground pressure of the upper goaf is small. (2) And (3) carrying out total stoping of the ore pillars, wherein the maximum main stress exceeds the failure strength of rocks, the exposed area of a conjuncted dead zone formed after stoping reaches more than 3700m2, and roof surrounding rocks fall in a large range and even cause geological disasters. (3) After the dead zone is treated (waste rock filling and cemented filling conditions are not met), all ore pillars are stoped, and the influence of ground pressure is small. The ore adopts a scheme of completely stoping the ore pillars after dead zone treatment, the dead zone after stoping is also filled with waste rocks in time, but long pillars need to be reserved for ensuring safety, and the final ore stoping rate is less than 60%.
Chinese patent 201611105285.0 discloses a space pillar recovery method for reconstructing a covering layer by combining goaf waste rock filling and top surrounding rock caving, which has the technical scheme that: firstly, filling a goaf formed when a stoping chamber is filled with waste rocks, and reserving a certain space; secondly, dividing the stud into a plurality of layers in the vertical direction, tunneling a rock drilling roadway in the center of the bottom of each layer, and caving the surrounding rock at the top of the stud to form a covering layer; then, an upward fan-shaped medium-length hole blasting scraper is adopted to carry out ore removal, and the ore pillars are sequentially advanced and retreated in the layer from top to bottom. Although the method realizes ore drawing under overlying strata, reduces the exposed area of a goaf and recovers part of pillars, the method also has the following technical defects:
(1) according to the theory of ore drawing ellipsoid, when carrying out shoveling ore drawing, because the layering is high, when about 1/3-1/2 ore is discharged, the ore is mixed into the barren rocks until the discharged barren rocks are completely discharged, the ore drawing is forced to stop, and the permanent loss of the ore is caused.
(2) The two sides of the stud are filled waste rocks, and when the shoveling and ore removal are carried out, the ores at the upper part can not be discharged completely, the waste rocks at the two sides begin to flow to the ore removal roadway under the action of self weight, so that the ore dilution is serious;
(3) the shoveling and ore removal are carried out in a single-head roadway every time, so that a through air flow cannot be formed, the ventilation of a working surface is difficult, and the operation safety condition is poor;
(4) and fan-shaped medium-length hole ore falling and scraper ore removal are adopted in each layer, so that rock drilling and scraper equipment needs to be carried back and forth, a large number of equipment operation channels need to be tunneled, and the mining accurate cutting engineering quantity is greatly increased.
Disclosure of Invention
The invention aims to provide a stoping method of an underground mine goaf left stud, aiming at the defects in the prior art, and the method realizes the purposes of improving the ore recovery rate, reducing the ore dilution rate, reducing the mining process quantity, avoiding the large exposed area of the goaf and improving the working environment of a working face by arranging a bottom ore removal structure, reasonably arranging a cutting raise and a layering height and reserving ores in a stope.
In order to achieve the purpose, the stoping method of the underground mine goaf remaining stud adopts the following technical scheme:
the invention relates to a stoping method of a residual stud in a goaf of an underground mine, wherein a stud is arranged in an ore body, two sides of the stud are provided with ore rooms, a middle section haulage roadway is arranged on the footwall of the ore body, and the stoping method is implemented by adopting the following steps:
1) after stoping of the chamber is finished and a filling body formed by adopting tailing cemented filling reaches specified maintenance strength, tunneling an ore removal roadway into a stud at one side of a middle section haulage roadway along the direction vertical to the direction of the ore body to reach a hanging wall rock contact surface on the ore body; the curing strength is generally 1.5 MPa;
2) tunneling a cutting raise upwards along the hanging wall ore rock contact surface at the end part of the ore removal roadway, wherein the cutting raise penetrates through the upper middle section air return roadway and is used as an air return channel for the initial drilling and blasting free surface and the later layered stope operation;
3) drilling fan-shaped medium-length holes upwards along the top of a mine removal roadway in a stud, wherein the included angle alpha between the fan-shaped medium-length holes at two sides and the horizontal direction is more than 45 degrees and generally ranges from 45 degrees to 60 degrees, a cutting raise and the mine removal roadway are taken as free surfaces, a horn mouth-shaped bottom structure is formed after row-by-row blasting, a scraper is adopted to discharge part of ores, the rest of ores are temporarily reserved in the stud space to serve as a working platform for continuous upward mining, and the height of a rock drilling working space required by the working platform is 2-3 m;
4) excavating a pedestrian ventilation patio in the footwall surrounding rock on one side of the middle section transportation roadway which is directly opposite to the ore removal roadway to be communicated with the upper middle section air return roadway, excavating layered communication roads in the pedestrian ventilation patio every 3-8 meters in the direction vertical to the studs to reach the footwall ore rock contact surface, and dividing the studs into a plurality of layers in the vertical direction;
5) when layered stope operation is carried out each time, operating personnel enter the stope through the pedestrian ventilation patio and the layered communication channel, upward parallel blast holes are drilled, and the depth of the upward parallel blast holes required by rock drilling is appropriate to the layered height of the stud, namely 3-8 m; then, carrying out charging, line blasting and ventilation operation step by step, and then operating a scraper in a bottom ore removal roadway to carry out local ore removal operation, wherein the ore amount discharged each time accounts for 30-38% of the total amount of the caving ore; in order to facilitate the drilling and blasting operation of personnel on the shrinkage pile, the top prying and leveling operation should be carried out after the partial ore drawing;
6) adopting the mode from bottom to top to circulate the operations of drilling, blasting, ventilating, local ore drawing and prying the top and flat field in each layered stope in turn until the whole stud is completely mined, and then using a scraper to carry all the ores in the reserved stud to a chute arranged on one side of a ore body footwall middle section transportation roadway;
7) after ore removal is finished, the filling retaining wall is used for sealing the ore removal roadway and the lower inlet of the pedestrian ventilation raise, and then the filling operation link of the left space after the stud mining can be implemented.
Furthermore, in the pedestrian ventilation sky well, the layered communication channels are preferably tunneled every 3-6 meters in the direction perpendicular to the stud.
Furthermore, the section specification of the ore removal roadway is 3.5m multiplied by 3.5 m-4.5 m multiplied by 4.5 m; the specification of the cut patio is a rectangular section with the side length of 1.2-2 m, and the specification of the pedestrian ventilation patio is a rectangular section with the side length of 1.2-1.8 m; the side length of the layered connection channel is 1-1.5 m of a rectangular cross section.
Furthermore, the height of the horn-mouth-shaped bottom structure is 3-8 m.
By adopting the technical scheme, the stoping method of the underground mine goaf left stud achieves the purposes of realizing wind flow communication of a stope, improving the ore recovery rate, reducing the ore dilution rate, reducing the mining process quantity, avoiding overlarge exposed area of the goaf and improving the working environment. The concrete positive effects are as follows:
(1) only partial ore pillars are reserved above two sides of the ore removal roadway at the bottom of the stud for forming a bottom structure, so that the stud recovery rate is more than 95 percent, and stud mineral resources are greatly recovered.
(2) According to the stability of the ore rock and the filling body, the layered rock drilling height can be randomly changed, so that the mining blasting disturbance is reduced, the deformation of the surrounding rock is controlled, the mixing rate of waste rock and the dilution rate of ore are reduced, and the exposure scale of a stope is controlled.
(3) A cutting raise is arranged on the upper disc of the stud to penetrate through an upper middle section air return roadway, a pedestrian ventilation raise is arranged on the lower disc of the stud, fresh air flow enters a working face through the pedestrian ventilation raise and a layered connecting channel in each rock drilling and blasting operation link, and dirty air is discharged through the cutting raise after a stope is washed, so that circulating penetrating air flow is formed, the ventilation condition of the working face is improved, and a good operation environment is favorably built.
(4) The mining and cutting workload required by rock drilling tunnels and carrying rock drilling equipment is not required to be arranged in each layer, and a large amount of ore is uniformly drawn after all the layers are stoped, so that the mining and cutting workload can be obviously reduced and the production efficiency of a stope can be improved.
(5) When the filling is completed by the pillar mining, only the closed retaining wall needs to be built at the bottom of the ore removal roadway and the bottom entrance of the pedestrian ventilation patio, so that the consumption of materials for constructing and filling the retaining wall is reduced, the filling cost is reduced, and the filling efficiency is improved.
Drawings
FIG. 1 is a front view of a stoping method of a goaf left-over stud of an underground mine;
FIG. 2 is a view taken along line A-A of FIG. 1;
FIG. 3 is a view taken along line B-B of FIG. 1;
FIG. 4 is a view taken along line C-C of FIG. 3;
FIG. 5 is a front view of a stoping method of an underground mine goaf remaining stud in accordance with the present invention in the arrangement of a bottom structure;
FIG. 6 is a front view of a method of stoping a goaf remnant stud in an underground mine after the formation of a bottom structure.
The reference signs are: 1-middle section transportation roadway; 2-ore removal roadway; 3-pedestrian ventilation patio; 4-pass shaft; 5-a filling body; 6-pillar mining; 7-ore caving; 8-hanging the ore rock contact surface; 9-layered contact road; 10-a working platform; 11-upward parallel blast holes; 12-cutting the raise; 13-footwall surrounding rock; 14-a bottom structure; 15-rock drilling work space; 16-studs; 17-footwall rock contact surface; 18-fan-shaped medium-length hole.
Detailed Description
In order to better describe the invention, the stoping method of the underground mine goaf remaining stud of the invention is further described in detail with reference to the accompanying drawings.
As shown in fig. 1, the stoping method of the underground mine goaf left-over stud according to the present invention is shown in a front view and is combined with fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the stoping method of the underground mine goaf left-over stud according to the present invention is implemented by the following steps, wherein a stud 16 is arranged in an ore body, ore rooms are arranged on two sides of the stud 16, and a middle transportation roadway 1 is arranged on a lower tray of the ore body:
1) when stoping of the chamber is finished and a filling body 5 formed by cementing and filling tailings reaches 1.5MPa, a three-core arch ore removal roadway 2 with the specification of 3.5m multiplied by 3.5m is tunneled into a stud 16 at one side of a middle section haulage roadway 1 along the direction vertical to the trend of the ore body to reach the hanging wall rock contact surface 8 of the ore body;
2) a cutting raise 12 with the specification of 1.5m multiplied by 1.5m is tunneled upwards along the hanging wall ore rock contact surface 8 at the end part of the ore removal roadway 2, and the cutting raise 12 penetrates through the upper middle section return air roadway and is used as a return air channel of an initial rock drilling blasting free surface and later layered stope operation;
3) in the stud 16, a fan-shaped medium-length hole 18 is drilled upwards along the top of the ore removal roadway 2, the included angle alpha between the fan-shaped medium-length holes 18 on the two sides and the horizontal direction is between 45 and 60 degrees, and the depth of the medium-length hole is preferably 2 to 5 m; taking the cutting raise 12 and the ore removal roadway 2 as free surfaces, forming a bell mouth-shaped bottom structure 14 after row-by-row blasting, discharging part of ores by adopting a scraper, temporarily reserving the rest ores in a space of a stud 16 as a working platform 10 for continuous upward mining, and keeping the height of a rock drilling working space required by the working platform 10 to be 2-3 m;
4) excavating a layered connecting channel 9 with the specification of 1.2m multiplied by 1.8m in the direction perpendicular to the stud 16 in the pedestrian ventilation patio 3 every 3-8 m to reach the contact surface 17 of the lower wall rock, and dividing the stud 16 into a plurality of layers in the vertical direction;
5) when the layered stope is operated at each time, an operator enters the stope through the pedestrian ventilation patio 3 and the layered communication channel 9, upward parallel blast holes 11 are drilled, and the depth of the upward parallel blast holes 11 required by rock drilling is appropriate to the layered height of the studs 16, and is about 3-8 m. Then, carrying out charging, connecting line blasting and ventilating operation links step by step, and then operating a scraper in the bottom ore removal roadway 2 to carry out local ore removal operation, wherein the ore amount discharged each time accounts for 30-38% of the total amount of the caving ore 7; carrying out prying and leveling operation after local ore drawing;
6) the method comprises the steps of circularly drilling, blasting, ventilating, partially drawing ore and prying a top flat field in each layered stope from bottom to top in sequence until all the studs 16 are completely mined, and shoveling and conveying all the remaining ores in the studs 16 to a chute 4 arranged on one side of a ore body footwall middle section transportation roadway 1 by using a scraper;
7) after ore removal is finished, the filling retaining wall is used for sealing the lower inlets of the ore removal roadway 2 and the pedestrian ventilation patio 3, and then the filling operation link of the left space after the extraction of the studs 16 can be implemented.
As shown in the figure 1 and combined with the figure 2, the stoping method for the underground mine goaf remaining studs only reserves partial ore pillars 6 above two sides of the ore removal roadway 2 at the bottom of the stud 16 to form a bottom structure 14, and the stoping rate of the stud 16 can be more than 95%.
The invention adopts a bottom-up layered stoping mode, only part of ore pillars 6 are reserved when the bottom structure 14 is arranged, and the ore stoping rate is greatly improved; the layering height can be seen, the stability of the ore rocks and the filling body 5 can be changed randomly, the damage to the surrounding rocks and the filling body 5 can be effectively slowed down, and the ore dilution rate is reduced; the upper plate cutting raise 12 is communicated with the upper middle section return air roadway, so that air flow circulation is realized, and the environment of a working face is improved.
Claims (2)
1. The utility model provides a stoping method of underground mine goaf left over stud, internal stud (16) that is equipped with of ore body, stud (16) both sides are the stope, are equipped with middle section haulage roadway (1) in ore body footwall, its characterized in that adopts the following step to implement:
1) when stoping of the chamber is finished and a filling body (5) formed by cementing and filling tailings reaches 1.5MPa, a mining roadway (2) is tunneled into a stud (16) at one side of the middle-section haulage roadway (1) along the direction vertical to the trend of the ore body to reach the hanging wall rock contact surface (8) of the ore body;
2) a cutting raise (12) is tunneled upwards along the hanging wall ore rock contact surface (8) at the end part of the ore removal roadway (2), and the cutting raise (12) penetrates through the upper and middle section air return roadway to serve as an air return channel for the initial rock drilling blasting free surface and the later layered stope operation; the section specification of the ore removal roadway (2) is 3.5m multiplied by 3.5 m-4.5 m multiplied by 4.5 m; the specification of the cutting raise (12) is a rectangular section with the side length of 1.2-2 m;
3) in a stud (16), fan-shaped medium-length holes (18) are drilled upwards along the top of a mine removal roadway (2), the included angle alpha between the fan-shaped medium-length holes (18) on the two sides and the horizontal direction is 45-60 degrees, a cutting raise (12) and the mine removal roadway (2) are taken as free surfaces, a horn mouth-shaped bottom structure (14) is formed after row-by-row blasting, a scraper is adopted to discharge partial ores, the rest ores are temporarily left in the space of the stud (16) to serve as a working platform (10) for continuous upward mining, and the height of a rock drilling working space required by the working platform (10) is 2-3 m; the height of the bell-mouth-shaped bottom structure (14) is 3-8 m; the depth of the fan-shaped medium-length hole (18) is 2-5 m;
4) a pedestrian ventilation shaft (3) is tunneled in the footwall surrounding rock (13) at one side of the middle section transportation roadway (1) which is directly opposite to the ore removal roadway (2) to be communicated with the upper middle section air return roadway, a layered connecting channel (9) is tunneled in the pedestrian ventilation shaft (3) at intervals of 3-8 meters in the direction perpendicular to the studs (16) to reach the footwall ore contact surface (17), and the studs (16) are divided into a plurality of layers in the vertical direction; the specification of the pedestrian ventilation patio (3) is a rectangular section with the side length of 1.2-1.8 m, and the specification of the layered communication road (9) is a rectangular section with the side length of 1 m-1.5 m;
5) during each layered stope operation, an operator enters a stope through the pedestrian ventilation raise (3) and the layered communication channel (9), drills upward parallel blast holes (11), the depth of the upward parallel blast holes (11) required by rock drilling is appropriate to the layered height of the studs (16), then the charging, connecting line blasting and ventilation operation links are gradually implemented, then a scraper is operated in the bottom ore removal roadway (2) to carry out local ore drawing operation, and the ore amount discharged each time accounts for 30% -38% of the total amount of the ore (7) to be blown down; carrying out prying and leveling operation after local ore drawing;
6) the method comprises the steps of adopting a mode from bottom to top to circularly drill, blast, ventilate, partially ore drawing and pry and jack the flat field in each layered stope in turn until all the pillars (16) are completely mined, and then using a scraper to carry all the ores in the reserved pillars (16) to a chute (4) arranged on one side of a ore body footwall middle section transportation roadway (1);
7) after ore removal is finished, a filling retaining wall is used for sealing the lower inlets of the ore removal roadway (2) and the pedestrian ventilation raise (3), and then a filling operation link of a space left after pillar removal (16) can be implemented;
8) and partial ore pillars (6) are reserved above two sides of the ore removal roadway (2) at the bottom of the stud (16) to form a bottom structure (14), and finally the recovery rate of the stud (16) is more than 95%.
2. The method for stoping the abandoned section pillars in the goaf of the underground mine according to claim 1, characterized by comprising the following steps: and (3) tunneling layered communication roads (9) in the pedestrian ventilation patio (3) every 3-6 meters in the direction vertical to the studs (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746889.3A CN111828007B (en) | 2020-07-29 | 2020-07-29 | Stoping method for residual studs in underground mine goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746889.3A CN111828007B (en) | 2020-07-29 | 2020-07-29 | Stoping method for residual studs in underground mine goaf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111828007A CN111828007A (en) | 2020-10-27 |
| CN111828007B true CN111828007B (en) | 2022-08-16 |
Family
ID=72920908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010746889.3A Active CN111828007B (en) | 2020-07-29 | 2020-07-29 | Stoping method for residual studs in underground mine goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111828007B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901260B (en) * | 2021-01-27 | 2022-03-25 | 昆明理工大学 | Method for improving overall strength of mine filling body |
| CN113202471B (en) * | 2021-05-10 | 2022-04-01 | 长沙矿山研究院有限责任公司 | In-situ leaching mining method for pillar ore body of underground mine |
| CN113847029B (en) * | 2021-09-09 | 2023-12-08 | 江西省修水香炉山钨业有限责任公司 | Surrounding column extraction method for underground mine high and large point column |
| CN113586057B (en) * | 2021-09-09 | 2022-10-28 | 昆明理工大学 | Method for safely and efficiently recovering interval columns of segmented open-field subsequent filling method panel |
| CN113700481B (en) * | 2021-09-16 | 2024-01-05 | 安徽铜冠产业技术研究院有限责任公司 | Zone control filling continuous mining method for underground goaf tray zone isolated ore pillar |
| CN114687740B (en) * | 2022-03-28 | 2023-05-23 | 长沙矿山研究院有限责任公司 | Upward horizontal layered filling mining method for breaking rock along strike non-explosive machinery |
| CN114810071B (en) * | 2022-04-14 | 2023-06-06 | 中钢集团马鞍山矿山研究总院股份有限公司 | Structural arrangement suitable for caving treatment of large goaf of underground mine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953732A (en) * | 2011-08-17 | 2013-03-06 | 彭康 | Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method |
| CN203452793U (en) * | 2013-07-10 | 2014-02-26 | 济南钢城矿业有限公司 | Room structure of shallow-hole shrinkage mining method for mining near-surface thick, large and more oblique ore body |
| CN107989614A (en) * | 2017-12-06 | 2018-05-04 | 昆明冶金高等专科学校 | The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production |
| CN108222940A (en) * | 2018-02-10 | 2018-06-29 | 广西华洋矿源材料有限公司 | A kind of recovery method of manganese ore |
| CN108547618A (en) * | 2018-04-04 | 2018-09-18 | 长沙有色冶金设计研究院有限公司 | A kind of two steps mining methods leave the recovery process of studding |
| CN110644997A (en) * | 2019-10-10 | 2020-01-03 | 安徽金安矿业有限公司 | Sublevel rock drilling and sublevel mining subsequent filling mining method |
| WO2020048094A1 (en) * | 2018-09-04 | 2020-03-12 | 中国矿业大学 | Method of recovering room-and-pillar coal pillar by using external replacement supports |
-
2020
- 2020-07-29 CN CN202010746889.3A patent/CN111828007B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953732A (en) * | 2011-08-17 | 2013-03-06 | 彭康 | Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method |
| CN203452793U (en) * | 2013-07-10 | 2014-02-26 | 济南钢城矿业有限公司 | Room structure of shallow-hole shrinkage mining method for mining near-surface thick, large and more oblique ore body |
| CN107989614A (en) * | 2017-12-06 | 2018-05-04 | 昆明冶金高等专科学校 | The mining methods of the inclined thick ore body of disk rock crusher in a kind of back production |
| CN108222940A (en) * | 2018-02-10 | 2018-06-29 | 广西华洋矿源材料有限公司 | A kind of recovery method of manganese ore |
| CN108547618A (en) * | 2018-04-04 | 2018-09-18 | 长沙有色冶金设计研究院有限公司 | A kind of two steps mining methods leave the recovery process of studding |
| WO2020048094A1 (en) * | 2018-09-04 | 2020-03-12 | 中国矿业大学 | Method of recovering room-and-pillar coal pillar by using external replacement supports |
| CN110644997A (en) * | 2019-10-10 | 2020-01-03 | 安徽金安矿业有限公司 | Sublevel rock drilling and sublevel mining subsequent filling mining method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111828007A (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111828007B (en) | Stoping method for residual studs in underground mine goaf | |
| CN110644997B (en) | Sublevel rock drilling and sublevel mining subsequent filling mining method | |
| CN105587318B (en) | A kind of method of mining by the way of filling of the parallel middle thickness orebody group continuous stoping of low-angle dip | |
| CN111706328B (en) | Mining method for treating goaf left pillars by filling method | |
| CN104806244B (en) | Filling mining method for slant middle-thick ore body | |
| CN103590831B (en) | A kind of gentle dip is thin-the novel mining methods of middle thickness orebody | |
| CN105041314A (en) | Method for united mining of deep subsequent stoping chamber and layered stoping jamb | |
| CN108547618A (en) | A kind of two steps mining methods leave the recovery process of studding | |
| CN103967493B (en) | A kind of slight slope and thin ore body ore pillar mining codes | |
| CN106499396B (en) | Medium-thickness slowly-inclined waste rock-containing interlayer ore body room-column mining method | |
| CN110617065B (en) | Stope structure arrangement mode of steep-dip extremely-thin ore vein cut-wall filling mining method | |
| CN105909247A (en) | Non-pillar sublevel mining cemented filling mining method | |
| CN113202475B (en) | Filling caving mining method | |
| CN105781551A (en) | Horizontal strip type mixed filling mining method applicable to three-underground orebody mining | |
| CN109505606B (en) | Pre-roof-control mechanized sublevel open stoping subsequent filling mining method | |
| CN111364997A (en) | Upward drift-caving combined mining method | |
| CN111005721A (en) | Mining method of steeply inclined medium-thickness ore body | |
| CN112682041B (en) | Filling mining method for broken and slowly-inclined thick and large ore body of upper disc | |
| CN113356851A (en) | Medium-thickness ore body continuous downward medium-length hole subsection open stoping subsequent filling mining method | |
| CN110259450B (en) | Mining method for inclined-steeply inclined medium-thickness ore body | |
| CN112727463A (en) | Mechanized filling mining method for steeply inclined thin ore vein under soft rock stratum condition | |
| CN110388210B (en) | Stope structure arrangement mode suitable for combined sectional mining of slowly-inclined medium-thickness ore body | |
| CN108756880B (en) | A kind of high-dipping is crushed thin lode body boom-type roadheader recovery method | |
| CN115450625A (en) | Stope block type mining method for gently inclined thin ore body under condition of broken roof | |
| CN110905510B (en) | Strip and block stoping method for horizontal ore pillar of metal ore body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231010 Address after: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Patentee after: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 243000 No. 666 Xitang Road, Ma'anshan Economic Development Zone, Anhui Province Patentee before: MAANSHAN Mine Research Institute Co.,Ltd. Patentee before: HUAWEI METAL MINERAL RESOURCE EFFICIENT RECYCLING UTILIZATION NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Patentee before: Sinosteel Nanjing Huaxin Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |