CN108825298B - Roof connecting method for stope filling - Google Patents
Roof connecting method for stope filling Download PDFInfo
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- CN108825298B CN108825298B CN201810400105.4A CN201810400105A CN108825298B CN 108825298 B CN108825298 B CN 108825298B CN 201810400105 A CN201810400105 A CN 201810400105A CN 108825298 B CN108825298 B CN 108825298B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to the technical field of stope filling, in particular to a roof-contacting method for stope filling, which comprises the steps of filling a stope dead zone to a certain height by using slag to obtain a residual dead zone, measuring the height of the residual dead zone, confirming the position of the highest point, installing a hollow anchor rod at the highest point, and installing a filling pipe on the hollow anchor rod; mounting a first dewatering pipe and a dewatering pipe at the highest point, and mounting a third dewatering pipe and a second dewatering pipe from top to bottom according to the height difference; and plugging a through opening between the residual empty area and the access path or the connecting passage, and then conveying filling slurry in the filling pipe to realize top-contacting filling of the residual empty area. The method has the characteristics of realizing effective top-contacting filling on the goaf of the stope, effectively ensuring the strength of the goaf of the stope and the like.
Description
Technical Field
The invention relates to the technical field of stope filling, in particular to a roof connecting method for stope filling, which is suitable for filling goafs in mines such as gold mine, iron mine, copper mine, coal mine, lead-zinc mine and the like.
Background
The goaf of the mine field is the goaf remained below the earth surface after mining, and if filling treatment is not carried out, the damage such as ground subsidence can be caused, the subsidence area can not only cause underground water exhaustion, cultivated land destruction and ecological environment deterioration, but also cause damage to nearby houses, road ground crack deformation, or the construction difficulty and the investment cost are increased due to the treatment of the goaf subsidence problem of heavy projects such as expressways, railways, airports and the like and urban buildings. In addition, the cracks formed by surface subsidence can provide sufficient oxygen for underground natural coal seams, and further underground coal fire enables the top plate of the goaf to have reduced pressure bearing, aggravated caving and widened and lengthened ground cracks, and finally a vicious circle of 'ground crack-fire area-ground crack cave-in' is formed.
The traditional treatment method of the mine goaf comprises solid filling, fluid filling, gas filling, manual project arrangement and the like. The solid filling mainly comprises the steps that slag on a stope is conveyed to a stope goaf needing to be treated through a conveying belt for filling, the conveying is difficult in the mode, a large amount of manpower is consumed, the danger is high, and the effect is not obvious; the fluid filling is mainly to inject cement mortar into a goaf of a mine field, but the roof-contacting effect in the existing fluid filling technology is poor; the gas filling is mainly to put an air bag into the goaf of the mine to fill the air bag by inflating the air bag, and the mode has simple operation and low cost, but the generated supporting force can not meet the supporting requirement; the manual roof-caving is that the top layer is manually lowered by adopting the technologies such as underground blasting and the like, the method still causes ground collapse, huge damage is caused to ground buildings, and a water-retaining area is formed on farmland cultivated land and the like, so that cultivation cannot be carried out.
Therefore, the goafs of the mine place bring serious threats to mine field workers and goaf residents; meanwhile, because of severe factory-ground contradiction caused by mining, a group event can be caused, the damage effect and the negative effect caused by the group event are large, the stability and harmony of one area are seriously influenced, and the filling treatment of the goaf of the mine becomes a problem to be solved urgently.
After Chinese patent documents about goaf filling are searched, some patent documents are listed as follows:
1. the invention discloses a mining filling method of Chinese patent < application number >201310674053.7< invention name > < applicant > < China Enfei engineering technology Limited company < address >100038 Beijing City Haihu district Rexing road No. 12 < abstract > < invention > the invention discloses a mining filling method, which comprises the following steps: mining ore within a first step site of an ore body; filling the goaf of the stope in the first step with filling slurry containing the cementing material; mining ore in the stope in a second step of the ore body; filling a filling area of the goaf of the second-step stope, which is adjacent to the third-step stope of the ore body, with filling slurry containing the cementing materials, and filling other areas of the goaf of the second-step stope with filling slurry not containing the cementing materials; mining ore in the stope in the third step; and filling the goaf of the stope in the third step with a filling slurry without a cementing material. According to the mining filling method, after mining, filling areas of stopes in the second step and stopes in the third step are filled with filling slurry containing cementing materials, and other parts of the stopes in the second step are filled with filling slurry without the cementing materials.
2. Chinese patent < application No. >201410835268.7< invention name > dense filling system and filling method < applicant > New Wen mining industry group, finite responsibility company < Address >271233 New mineral road No. 401 < abstract > of New Wen street, Taian City, Shandong province the invention provides a dense filling system, which comprises: the device comprises a waste rock storage device, a working area support system, a waste rock transportation system, a waste rock unloading system and a tamping system.
3. The Chinese patent ' application number ' 201410051780.2 ' name of the invention ' goaf filling mining system of mine field and gob-side entry retaining filling process ' applicant ' safety-Anhui university ' address ' 232001 ' Shunhua Zhongwan 168 ' abstract ' is a filling system suitable for coal mining, the system is that a chamber of a mining area filling material crushing and stirring station is arranged at the top of a rail mountain, a filling tunnel is arranged in a certain distance of an overlying rock layer of a coal face, a fan-shaped hole is drilled to the goaf by the filling tunnel construction above the goaf, a filling pipeline is laid in the filling tunnel, a blocking measure between the coal face and the goaf is used for separating the coal face and the goaf by a shield plate at the rear side of a hydraulic support, and the gob-side entry retaining filling process is separated from the gob-side entry retaining by a single hydraulic support and a steel template. Conveying filling materials to the goaf through a filling pipeline; after the filling material is solidified with certain strength, the coal mining working face is pushed forward, and mining and filling are carried out repeatedly.
4. The invention discloses a method for erecting and filling a mining pipeline, which relates to a method for erecting and filling a mining pipeline, in particular to a method for erecting and filling a mining pipeline, wherein the method comprises the following steps of presetting n blanking points, installing two anchor rods on a top plate of a roadway at each corresponding position, welding a hook and a circular ring at the exposed end parts of the anchor rods respectively, and installing a bolt anchor rod in a filling connection road. When stopes are filled, the filling hose is hung at the position close to a roadway top plate through the hook, fixing, positioning and blanking point switching are achieved through the fixing rope, and reversing and track constraint are achieved through the circular ring through the fixing rope.
5. The Chinese patent < application number >201410559523. X < invention name > a coal mine goaf filling system and a filling method < applicant > Henan university of Jane & Onage < Address >454000 Henan province Job's Job city high-new-area century No. 2001 < abstract > a coal mine goaf filling system and a filling method.
6. The invention discloses a method for filling a coal mine goaf and a filling system, wherein the method comprises a filling bin, a feeding machine, a weighing hopper, a stirring machine, a slurry machine, a filling pump, a conveying pipeline, a working face pipe and a three-way pipe. The filling bin is connected with the inlet of the stirrer through a feeder and a weighing hopper respectively. The outlet of the stirrer is connected to a filling point through a slurry machine, a filling pump, a conveying pipeline and a three-way valve. The filling process is that the waste rock, the cementing material, the fly ash and the water with the granularity of less than 25mm are respectively sent to a weighing hopper through a feeder to be weighed, and the weight ratio of the waste rock, the cementing material and the fly ash is 1: 0.22-0.80: 0.35-0.57, adding water, and making into slurry with mass concentration of 70-83% by a stirrer. The slurry is conveyed to a filling point for filling through a slurry machine, a filling pump, a conveying pipeline, a working face pipe and a three-way valve.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a stope filling roof connecting method which utilizes the effective arrangement of filling and dewatering pipes, enhances the observation and control of a rubber surface roof connecting space, ensures that a goaf is filled with filling slurry as much as possible, improves the roof connecting rate of the filled goaf, and ensures the stability of a stope and the stoping safety of a two-step stope.
In order to achieve the purpose of the invention, the technical scheme is as follows:
a roof-contacting method for stope filling, the roof-contacting method comprising the steps of:
(1) effectively measuring the top plate and the side wall of the goaf of the stope;
(2) normally filling slag to a preset position above a stope access way or a connecting road to obtain a filling body, wherein a residual goaf is formed between the top surface of the filling body and the top of the goaf of the stope;
(3) measuring the height of the residual dead zone, and determining the highest point of the residual dead zone;
(4) arranging an anchor rod at the highest point of the residual empty area, and installing the outlet end of the filling pipe on the anchor rod;
(5) independently installing a first dewatering pipe to the highest point of the residual empty area;
(6) independently installing a third dewatering pipe as an observation pipe to the position below the highest point of the top plate of the residual dead zone;
(7) independently installing a second dewatering pipe as a rubber surface positioning pipe below the highest point of the top plate of the residual dead zone;
(8) plugging a communication port between the access road or the communication road and the residual space according to normal construction requirements;
(9) conveying the prefabricated filling slurry into the residual empty area through a filling pipe for filling;
(10) when the slurry runs to the rubber surface positioning pipe, namely the second dewatering pipe or the observation pipe, namely the third dewatering pipe, the slurry is immediately blocked, and the surface filling and stirring station is informed to stop washing the pipes, so that the stope filling is completed.
And (4) measuring and determining the highest point position of the residual space and estimating the approximate volume of the residual empty area in the step (3), wherein the height from the highest point position of the residual space to the filling body is 1.3-1.8 m.
Drilling two holes at the highest point of the residual empty area in the step (4), wherein the distance between two holes is 30-35 cm, the hole depth is 1.2m, the two holes are V-shaped, and the included angle is 40-50 degrees; and (3) installing a hollow anchor rod in the hole, exposing 55-65 cm outside the hole, then installing a filling pipe on the hollow anchor rod, fixing the filling pipe by using an iron wire, and attaching the pipe wall to the top plate.
Independently installing the first dewatering pipe to the highest point of the top plate of the dead zone in the step (5), fixing the first dewatering pipe by using an iron wire, wherein the dewatering pipe is a hard corrugated plastic pipe, a drain hole or a drain seam is formed in the pipe body, the pipe body is wrapped by an iron wire net or a steel wire net, and filter cloth is wrapped outside the iron wire net or the steel wire net; first dehydration pipe tail end arranges in filling the barricade outside, avoids having the horizontal segment, seals the filter cloth on its head end port, can prevent to fill when meeting the top, runs thick liquid in the mouth of pipe, can effectively discharge water and air again, effectively guarantees to meet a guarantee of quality.
And (3) independently installing a second dewatering pipe as a rubber surface positioning pipe to the lower part of the highest point of the top plate of the residual goaf in the step (7), wherein the installation height is 55-65 cm below the highest point of the top plate of the goaf in the stope, and the pipe orifice does not seal filter cloth, so that slurry can be discharged outwards in time during filling, and the filling height can be effectively determined.
And (3) independently installing a third dewatering pipe as an observation pipe to the position below the highest point of the top plate of the residual dead zone in the step (6), wherein the installation height is 20-30 cm below the highest point of the top plate of the stope, the filter cloth is not sealed at the pipe orifice, and the slurry can be discharged outwards in time in the pipe, so that the filling height can be effectively determined.
In the step (10), when the slurry runs to the second dewatering pipe or the third dewatering pipe, the wood plug wrapped with the filter cloth is immediately used for plugging, and the ground surface filling and stirring station is informed to stop, because the arrangement length of the filling pipe is long in the filling process, more slurry still exists in the pipe after the stop, the part of slurry continues to fill the slurry to the top of the residual dead zone under the action of self gravity, and the first dewatering pipe can discharge water and air in time, so that the part of slurry can realize filling and top contacting to the top of the residual dead zone; and after the top is connected, the filling pipe is washed, and pipe washing water in the filling pipe is discharged to a drainage area provided with a pulp blocking wall through a pipeline tee arranged on the filling pipe, filtered by filling filter cloth and then discharged to a filling water collecting system.
It is inboard to be close to surplus dead zone for inboard, for inboard opposite side, and all install the gate valve on its exit end of being responsible for of pipeline tee bend and the branch pipe, the gate valve on being responsible for can be when filling the end, and the mortar that dams and wash tub of water also are favorable to demolising filling pipe, can prevent the thick liquids that have filled simultaneously and toward unloading outward, and the gate valve on the branch pipe can be to filling after, the reposition of redundant personnel wash tub of water after filling.
And (3) prefabricating the filling slurry obtained in the step (9) by using tailings and cement, wherein the weight ratio of the tailings to the cement is 4:1, the slurry concentration is more than 78%, and the filling can be continuously filled until the goaf of the stope is filled.
Compared with the prior art, the invention has the prominent substantive characteristics and remarkable progress that:
1. the invention utilizes the effective arrangement of the filling and dewatering pipes to strengthen the observation and control of the rubber surface roof-contacting space, ensures that the goaf is filled with filling slurry as much as possible, improves the roof-contacting rate of the filling goaf, and ensures the stability of the stope and the stoping safety of the two-step stope.
2. The method is suitable for filling of the large-volume goaf, widely suitable for goaf treatment in a mine field, simple and convenient to operate, simple in steps, capable of meeting the production requirements of safety and high efficiency, safe, reliable, good in isolation, high in automation degree, high in construction speed, high in filling speed, free of influence on stoping speed, capable of reducing the consumption of cement mortar, capable of digesting waste tailings, capable of utilizing wastes, free of environmental pollution, economic and environment-friendly, and low in filling cost, and operating personnel do not operate in the goaf.
3. The invention can ensure reasonable filling intensity distribution of the goaf, reduce the cemented filling proportion of the stope in the second step, has low filling cost, and can simultaneously mine ores to the maximum extent, improve the resource utilization rate and improve the economic benefit.
4. The invention effectively controls stope ground pressure and reduces surface subsidence; avoiding slag such as tailing sand occupying good fields, eliminating environmental pollution caused by slag such as tailing sand and the like, and realizing green mining of coal mines.
5. According to the invention, the first dewatering pipe, the second dewatering pipe, the third dewatering pipe and the dewatering pipes can discharge water and air generated in the filling process in time, so that a good roof-contacting effect is realized, the first dewatering pipe, the second dewatering pipe and the third dewatering pipe can improve the observation for the filling process, the height of the filling can be confirmed by slurry leakage in the pipes of the second dewatering pipe or the third dewatering pipe, and the filter cloth is sealed at the head end of the first dewatering pipe at the highest point of the remaining goaf, so that slurry can be prevented from leaking out of the first dewatering pipe when the roof is filled, the quality of the filled roof can be greatly improved, and the strength of the goaf after filling can be improved.
Drawings
Fig. 1 is a schematic structural view of a top-contacting method for stope filling according to the present invention;
FIG. 2 is a schematic top view of a stope filling roof-contacting method according to the present invention;
element names and serial numbers in the drawings: the device comprises a first dewatering pipe 1, a second dewatering pipe 2, a third dewatering pipe 3, a filling pipe 4, a hollow anchor rod 5, a filling retaining wall 6, a filling body 7, a stope roof 8, a residual dead zone 9, a West courtyard 10, an east courtyard 11, a courtyard chamber 12, dewatering pipes 13, a communication channel 14 and a stope gallery 15.
Detailed Description
The following is a further detailed description of the invention in connection with examples thereof:
referring to fig. 1 to 2, a roof-contacting method for stope filling, the roof-contacting method comprising the steps of:
(1) effectively measuring the top plate and the side wall of the goaf of the stope;
(2) normally filling slag to a preset position above a stope access way or a connecting road to obtain a filling body, wherein a residual goaf is formed between the top surface of the filling body and the top of the goaf of the stope;
(3) measuring the height of the residual dead zone, and determining the highest point of the residual dead zone;
(4) arranging an anchor rod at the highest point of the residual empty area, and installing the outlet end of the filling pipe on the anchor rod;
(5) independently installing a first dewatering pipe to the highest point of the residual empty area;
(6) independently installing a third dewatering pipe as an observation pipe to the position below the highest point of the top plate of the residual dead zone;
(7) independently installing a second dewatering pipe as a rubber surface positioning pipe below the highest point of the top plate of the residual dead zone;
(8) plugging a communication port between the access road or the communication road and the residual space according to normal construction requirements;
(9) conveying the prefabricated filling slurry into the residual empty area through a filling pipe for filling;
(10) when the slurry runs to the rubber surface positioning pipe, namely the second dewatering pipe or the observation pipe, namely the third dewatering pipe, the slurry is immediately blocked, and the surface filling and stirring station is informed to stop washing the pipes, so that the goaf filling of the stope is completed.
First dehydration pipe, second dehydration pipe and third dehydration pipe can play real-time supervision and control effect filling the in-process, can in time outwards discharge the air and the water of filling the process again, can effectively solve because of the unable problem that connects the top of existence of air and water.
And (3) measuring and determining the highest point position of the residual space and estimating the approximate volume of the residual empty zone, wherein the height from the highest point position of the residual space to the filling body is 1.3-1.8 m.
Drilling two holes at the highest point of the residual empty area in the step (4), wherein the distance between two holes is 30-35 cm, the hole depth is 1.2m, the two holes are V-shaped, and the included angle is 40-50 degrees; and (3) installing a hollow anchor rod in the hole, exposing 55-65 cm outside the hole, then installing a filling pipe on the hollow anchor rod, fixing the filling pipe by using an iron wire, and attaching the pipe wall to the top plate.
The step (5) is to independently install a first dewatering pipe to the highest point of the top plate of the dead zone, fix the first dewatering pipe by iron wires, the dewatering pipe is a hard corrugated plastic pipe, the pipe body is provided with a water drainage hole or a water drainage seam, the pipe body is wrapped with a wire mesh or a steel wire mesh, the wire mesh or the steel wire mesh is wrapped with filter cloth, the wire mesh or the steel wire mesh is 2mm in wire diameter, 1.2cm x 1.2cm in mesh size and 30 meshes in filter cloth mesh size; the tail end of the first dewatering pipe is arranged on the outer side of the filling retaining wall, so that a horizontal section is avoided, and filter cloth is sealed on the port of the head end of the first dewatering pipe.
And (7) independently installing a second dewatering pipe as a rubber surface positioning pipe to the position below the highest point of the top plate of the residual goaf, wherein the installation height is 55-65 cm below the highest point of the top plate of the goaf of the stope, and the filter cloth is not sealed at the pipe orifice.
And (6) independently installing a third dewatering pipe as an observation pipe to the position below the highest point of the top plate of the residual dead zone, wherein the installation height is 20-30 cm below the highest point of the top plate of the stope, and the filter cloth is not sealed at the pipe orifice.
And (10) when the slurry runs to the second dewatering pipe or the third dewatering pipe, immediately plugging by using a wooden plug wrapped with filter cloth, informing an earth surface filling and stirring station to stop, flushing the filling pipe, discharging the pipe washing water in the filling pipe to a drainage area provided with a slurry blocking wall through a pipeline arranged on the filling pipe, and discharging the pipe washing water to a filling water collecting system after filtering by filling the filter cloth.
The pipeline tee is located and fills the barricade outside, all installs the gate valve on its exit end and the branch pipe of being responsible for.
And (4) prefabricating the filling slurry obtained in the step (9) by using tailings and cement, wherein the weight ratio of the tailings to the cement is 4:1, and the slurry concentration is more than 78%.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. A roof-contacting method for stope filling is characterized in that: the roof connecting method comprises the following steps:
(1) effectively measuring the top plate and the side wall of the goaf of the stope;
(2) normally filling slag to a preset position above a stope access way or a connecting road to obtain a filling body, wherein a residual goaf is formed between the top surface of the filling body and the top of the goaf of the stope;
(3) measuring the height of the residual dead zone, and determining the highest point of the residual dead zone;
(4) arranging an anchor rod at the highest point of the residual empty area, and installing the outlet end of the filling pipe on the anchor rod;
(5) independently installing a first dewatering pipe to the highest point of the residual empty area;
(6) independently installing a third dewatering pipe as an observation pipe to the position below the highest point of the top plate of the residual dead zone, wherein the installation height is 20-30 cm below the highest point of the top plate of the stope, and the pipe orifice is not sealed with filter cloth;
(7) independently installing a second dewatering pipe as a rubber surface positioning pipe below the highest point of the top plate of the residual goaf, wherein the installation height is 55-65 cm below the highest point of the top plate of the goaf of the stope, and the pipe orifice does not seal filter cloth;
(8) plugging a communication port between the access road or the communication road and the residual space according to normal construction requirements;
(9) conveying the prefabricated filling slurry into the residual empty area through a filling pipe for filling; the filling slurry in the step (9) is prepared by tailing and cement, the weight ratio of the tailing to the cement is 4:1, and the slurry concentration is more than 78%;
(10) when the slurry runs to the second dewatering pipe or the third dewatering pipe, the slurry is immediately blocked, and the surface filling and stirring station is informed to stop washing the pipes, so that the stope filling is completed.
2. The stope filling roof-contacting method according to claim 1, characterized in that: and (3) measuring and determining the highest point position of the residual space and estimating the approximate volume of the residual empty zone, wherein the height from the highest point position of the residual space to the filling body is 1.3-1.8 m.
3. The stope filling roof-contacting method according to claim 1, characterized in that: drilling two holes at the highest point of the residual empty area in the step (4), wherein the distance between two holes is 30-35 cm, the hole depth is 1.2m, the two holes are V-shaped, and the included angle is 40-50 degrees; and (3) installing a hollow anchor rod in the hole, exposing 55-65 cm outside the hole, then installing a filling pipe on the hollow anchor rod, fixing the filling pipe by using an iron wire, and attaching the pipe wall to the top plate.
4. The stope filling roof-contacting method according to claim 1, characterized in that: independently installing a first dewatering pipe to the highest point of the top plate of the dead zone, fixing the first dewatering pipe by using an iron wire, wherein the dewatering pipe is a hard corrugated plastic pipe, a drain hole or a drain seam is formed in the pipe body, the pipe body is wrapped by an iron wire net or a steel wire net, and filter cloth is wrapped outside the iron wire net or the steel wire net; the tail end of the first dewatering pipe is arranged on the outer side of the filling retaining wall, so that a horizontal section is avoided, and filter cloth is sealed on the port of the head end of the first dewatering pipe.
5. The stope filling roof-contacting method according to claim 1, characterized in that: and (10) when the slurry runs to the second dewatering pipe or the third dewatering pipe, immediately plugging by using a wooden plug wrapped with filter cloth, informing an earth surface filling and stirring station to stop, flushing the filling pipe, discharging the pipe washing water in the filling pipe to a drainage area provided with a slurry blocking wall through a pipeline arranged on the filling pipe, and discharging the pipe washing water to a filling water collecting system after filtering by filling the filter cloth.
6. The stope-filling roof connecting method according to claim 5, wherein: the pipeline tee is located and fills the barricade outside, all installs the gate valve on its exit end and the branch pipe of being responsible for.
7. The stope filling roof-contacting method according to claim 1, characterized in that: and (4) prefabricating the filling slurry obtained in the step (9) by using tailings and cement, wherein the weight ratio of the tailings to the cement is 4:1, and the slurry concentration is more than 78%.
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| CN111255513A (en) * | 2020-03-06 | 2020-06-09 | 安徽马钢罗河矿业有限责任公司 | Method for improving roof-contacting rate of filling of mine room by using roof-picking |
| CN112433205A (en) * | 2020-11-12 | 2021-03-02 | 北京科技大学 | Mining and filling empty roof height detection device, installation method and detection method thereof |
| CN113187544B (en) * | 2021-05-28 | 2023-05-26 | 辽宁科技大学 | Large underground goaf treatment method of beam type roof structure |
| CN113431627B (en) * | 2021-07-12 | 2021-12-24 | 北京科技大学 | Method for improving filling roof contact rate |
| CN114033484B (en) * | 2021-11-18 | 2022-08-02 | 长沙矿山研究院有限责任公司 | Stope mobile energy dissipation forced roof connecting system and filling roof connecting method |
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| CN102155259B (en) * | 2011-03-08 | 2014-05-07 | 北京科技大学 | Filling retaining wall constructed by using tunneling waste stones, and construction method of retaining wall |
| CN102619515B (en) * | 2012-04-26 | 2014-01-08 | 鞍钢集团矿业公司 | Top-filled high-end-wall pillarless sublevel caving method extraction technique |
| CN103233771B (en) * | 2013-05-13 | 2014-12-31 | 河北钢铁集团矿业有限公司 | Roof contacting process in goaf filling treating procedure |
| CN104088640B (en) * | 2014-06-26 | 2016-08-24 | 东北大学 | A kind of deep orebody adopts the mining codes filling spatial separation |
| CN106050300B (en) * | 2016-07-07 | 2017-12-01 | 山东黄金矿业(莱州)有限公司焦家金矿 | A kind of Tight filling method for owing to adopt to route superelevation on |
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