CN111472835B - Comprehensive filling and roof connecting method for stoping access - Google Patents
Comprehensive filling and roof connecting method for stoping access Download PDFInfo
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- CN111472835B CN111472835B CN202010366866.XA CN202010366866A CN111472835B CN 111472835 B CN111472835 B CN 111472835B CN 202010366866 A CN202010366866 A CN 202010366866A CN 111472835 B CN111472835 B CN 111472835B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000005406 washing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 9
- 238000005065 mining Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009430 construction management Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002023 wood Substances 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
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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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a comprehensive filling roof-contacting method of a stoping access, which comprises the following steps: constructing each stoping route downhill, carrying out top-lifting at the head-facing position of the stoping route to form a sand-discharging chamber, simultaneously carrying out top-lifting at the inlet of the stoping route and erecting an upper-opening type filling retaining wall, wherein a filling pipeline enters the stoping route from the upper part of the filling retaining wall and is erected to the sand-discharging chamber along the top plate of the stoping route; when the stoping access roof is connected and filled, the natural gradient of the stoping access roof and the slurry pressure in the filling pipeline are used for realizing filling roof connection, and for the local uneven roof area, the filling pipeline is used for vibrating to realize local roof connection; when the roof-contacting filling is carried out, the roof-contacting condition is convenient to observe, the filling roof-contacting process is simple, the cost is low, the requirements for filling the retaining wall are low, the safety is good, and the popularization and the application are convenient.
Description
Technical Field
The invention relates to a metal mine underground filling mining technology, relates to a method for filling fillers in an underground mining area, and particularly relates to a comprehensive filling roof-contacting method for a stoping access.
Background
At present, when the domestic mine is filled and operated by an upward drift filling mining method, a closed filling retaining wall is generally erected at the opening of each stoping drift, and a filling pipe and an exhaust pipe are installed in the stoping drift to carry out forced filling and roof connecting. The filling and roof-contacting conditions are difficult to observe, and finally, during roof-contacting, due to the huge pressure of the residual filling materials or pipe washing water in the filling pipeline, slurry leakage and even washout of the filling retaining wall are easy to occur, and roadway pollution is caused. In order to solve the contradiction between the roof-contacting and retaining wall filling in some mines, the retaining wall filling is designed into a reinforced concrete retaining wall, so that the cost is very high, the construction period is too long, and whether roof-contacting is carried out during filling can only depend on some monitoring devices which are more complicated in design. The mining method with good safety performance, namely the upward access filling mining method, has low application rate due to high cost and complex process of filling and roof contacting.
Disclosure of Invention
The invention aims to solve the technical problem of providing a comprehensive filling and top-contacting method of an extraction route aiming at the defects of the prior art, which realizes the efficient filling and top-contacting of the extraction route by using simpler process and equipment; high roof contact rate, good safety, low filling cost, simple process and construction management and easy popularization.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a comprehensive filling and roof-contacting method for a stoping access comprises the following steps:
(1) each stoping route is constructed downwards from the opening, a top plate at the head of the stoping route is lower than a top plate at the opening, if the length of the stoping route is less than a preset range, a filling roadway perpendicular to the route direction is constructed at the head of each stoping route, and a plurality of adjacent stoping routes are communicated;
(2) the top plate close to the head of the stoping access or the top plate of the middle point in the filling roadway is obliquely and upwards jacked to form a triangular sand-discharging chamber, the filling pipeline is led to the sand-discharging chamber along the stoping access top plate or the filling roadway top plate, and the outlet of the filling pipeline is firmly suspended at the sand-discharging chamber top plate;
(3) at the intersection of the stoping access entrance and the main connecting roadway, obliquely upward jacking to form a retaining wall chamber, erecting an upper open type filling retaining wall at the position corresponding to the highest point, and raising the upper edge of the filling retaining wall above the stoping access top plate; the filling pipeline enters the stoping route along the upper edge of the filling retaining wall, a three-way valve is arranged outside the inlet of the stoping route, the inlet and one outlet of the three-way valve are both connected with the filling pipeline, the filling pipeline connected with the outlet enters the stoping route, the other outlet of the three-way valve is connected with a drain pipe, and the drain pipe is communicated with a dead zone to be filled or a buffer pool; the upper part of the filling retaining wall is provided with a mounting hole, an overflow pipe is mounted in the mounting hole, one end of the overflow pipe leads to a stoping route, and the other end leads to an adjacent empty zone to be filled or a buffer pool;
(4) the stoping route adopts tailing cementing material to fill in times, before and after each filling, a three-way valve is used for discharging a guide pipe water and a washing pipe water of a filling pipeline connected with an inlet of the stoping route into a to-be-filled dead zone or a buffer pool through a drain pipe; when the pipe washing water is filled for the second time before top-contacting filling, the pipe washing water is directly discharged to a filling area through a filling pipeline connected with an outlet of a three-way valve, and the pipe washing water is not introduced into an area to be filled or a buffer pool by a drain pipe connected with the three-way valve; after the last filling, the height difference between the liquid level of the filling slurry at the inlet of the stoping access and the top plate at the inlet of the stoping access is not larger than the preset range;
(5) when the top-contacting filling is carried out for the last time, the water of the guide pipe is directly discharged into the stoping access to ensure the pipeline to be smooth, but the concentration of the filling slurry for top-contacting filling for the last time and the sand-lime ratio in the tailing cementing material should be improved; because the filling slurry has high specific gravity and the water of the guide pipe has low specific gravity, the water of the guide pipe floats on the filling slurry and is finally discharged out of the stoping inlet path through the overflow pipe or seeps out of the stoping inlet path along the upper edge of the filling retaining wall;
(6) and during the last roof-contacted filling, a person observes the rising condition of the liquid level of the filling slurry at the filling retaining wall, and when the liquid level of the filling slurry exceeds the height of a top plate at the inlet of the stoping access or when the overflow pipe discharges the redundant filling slurry, the three-way valve is opened, the residual tailing cementing material and the subsequent pipe washing water in the filling pipeline are discharged into a dead zone to be filled or a buffer pool, and the filling operation is stopped at the same time. Because the filling slurry in the filling pipeline has certain pressure, after the head of the stoping route is connected with the roof, the filling slurry flows to the opening of the stoping route from the head of the stoping route under the action of the pressure, and air in the route is discharged in the process, so that the filling roof connection is realized. When the local top plate is uneven and has a vacant area, the filling pipeline arranged on the top plate of the access road has certain vibration in the flowing process of the filling slurry and transmits the vibration to the filling slurry in the region, so that the air in the uneven region of the top plate can be discharged at an accelerated speed, and the final efficient filling and top contact can be realized.
As a further improved technical scheme of the invention, the step (5) further comprises the following steps:
when the last time of top connection filling and discharging of the wash pipe water, if the water guide channel between the middle of the stoping access and the sand-discharging chamber is blocked so that the wash pipe water cannot flow from the head of the stoping access to the filling retaining wall, the three-way valve is switched, the filling pipeline is sawn off at the inner side of the filling retaining wall, and the filling is carried out in the forward direction from outside to inside until the top plate of the stoping access is connected with the top.
As a further improved technical scheme of the invention, the step (1) specifically comprises the following steps:
and (3) constructing downwards at the opening of each stoping access, wherein the gradient is minus 1 to minus 5 percent, the elevation of a top plate at the head of each stoping access is 30 to 60cm lower than that of the top plate at the opening, and if the length of each stoping access is less than 20 to 25m, constructing a filling roadway perpendicular to the direction of the access at the head of each stoping access and penetrating through 2 to 3 adjacent stoping accesses.
As a further improved technical solution of the present invention, the step (2) specifically comprises:
and (3) obliquely upward jacking a top plate 2-5 m away from the head of the stoping access or a top plate at the middle point in the filling roadway for 1.5m to form a triangular sand-discharging chamber.
As a further improved technical solution of the present invention, the step (3) specifically comprises:
at the intersection of the stoping access entrance and the main connecting channel, 1.5-2 m of roof is obliquely lifted upwards to form a retaining wall chamber, an upper open type filling retaining wall is erected at the position corresponding to the highest point, and the upper edge of the filling retaining wall is 0.3-0.5 m higher than the stoping access roof;
the distance between the mounting hole and the upper edge of the filling retaining wall is 0.2 m; and an overflow pipe with the diameter same as that of the filling pipeline is arranged in the mounting hole.
As a further improved technical solution of the present invention, the step (4) specifically comprises:
the stoping drift is filled by tailing cementing materials in a grading way, and the concentration of filling slurry is not lower than 65%;
after the last filling, the height difference between the liquid level of the filling slurry at the inlet of the stoping access and the top plate at the inlet of the stoping access is not more than 0.8-1 m.
As a further improved technical solution of the present invention, the step (5) specifically comprises:
the concentration of filling slurry for the last filling top contact is not lower than 67%, and the ash-sand ratio is not lower than 1: 4.
The invention has the beneficial effects that:
(1) the roof contact rate is high:
because the stoping access is arranged in a downhill way and the outlet of the filling pipeline is arranged in the head area of the access, the gas in the access can be effectively discharged during the last topping filling, and the natural filling topping is realized by using the pressure of filling slurry. Meanwhile, the upper part of the filling retaining wall is open, so that the filling roof-contacting condition can be conveniently and clearly observed by personnel.
(2) The safety is good:
the filling retaining wall is open, slurry and air pressure in a filling pipeline and a stoping access can be eliminated when the filling retaining wall is in top connection, and the filling retaining wall cannot be pressed to leak slurry or be broken down.
(3) The filling cost is low:
the conventional wood retaining wall is adopted during filling, a concrete retaining wall with higher building cost is not needed, a large number of instruments and meters for monitoring the roof-contacting condition and other devices are not needed, the filling roof-contacting is a natural roof-contacting, and the high-pressure slurry pump grouting forced roof-contacting or secondary blasting forced roof-contacting is not needed.
(4) The process and construction management are simple, and the popularization is easy:
each measure of filling and roof-contacting is originally simple, a chamber higher than an access roof is formed by only twice roof-contacting, then natural roof-contacting is realized by using pipeline pressure and an access inclined roof without other excessive auxiliary equipment and devices, and the filling retaining wall is a conventional retaining wall, is easy to master and understand and is easy to popularize for general construction teams.
Drawings
Figure 1 is a longitudinal section along a production string.
Fig. 2 is a piping plan view.
In the figure: 1. a three-way valve; 2. a retaining wall chamber; 3. filling a pipeline; 4. a horizontal line; 5. a sand-discharging chamber; 6. a stoping route; 7. filling the retaining wall; 8. a drain pipe; 9. a main communication lane; 10. an overflow pipe; 11. three-way valve.
Detailed Description
The following further description of embodiments of the invention is made with reference to the accompanying figures 1-2:
the method for the comprehensive filling and roof contacting of the stoping access proposed by the embodiment is as follows, and is shown in fig. 1 and fig. 2:
(1) and (3) constructing each stoping route 6 downwards from an opening in a stope or panel with a gradient of-1% -5%, ensuring that the elevation of a top plate at the head of each stoping route 6 is 30-60 cm lower than that of a top plate at the opening of the stoping route 6, and constructing a filling roadway perpendicular to the direction of the stoping route at the head of each stoping route to penetrate through 2-3 adjacent stoping routes 6 if the length of each stoping route 6 is less than 20-25 m.
(2) And (3) obliquely upward jacking the top plate 3-5 meters away from the head of the stoping access 6 or the top plate at the middle point in the filling roadway for 1.5m to form a triangular sand-discharging chamber 5, guiding the filling pipeline 3 to the sand-discharging chamber 5 along the top plate of the stoping access 6 or the top plate of the filling roadway, and firmly suspending the outlet of the filling pipeline 3 at the top plate of the sand-discharging chamber 5.
(3) And (3) obliquely upward jacking 1.5-2 m at the intersection of the inlet of the stoping access 6 and the main connecting roadway 9 to form a retaining wall chamber 2, erecting an upper open type filling retaining wall 7 at the corresponding position of the highest point, and keeping the upper edge of the filling retaining wall 7 0.3-0.5 m higher than the top plate of the stoping access 6. The filling pipeline 3 enters the stoping route 6 along the upper edge of the filling retaining wall 7, the three-way valve 1 is arranged outside the inlet of the stoping route 6, the inlet and one outlet of the three-way valve 1 are both connected with the filling pipeline 3, the filling pipeline 3 connected with the outlet enters the stoping route 6, the other outlet of the three-way valve 1 is connected with the water drain pipe 8, and the water drain pipe 8 of the three-way valve 1 is led into a dead zone to be filled or a buffer pool. And a mounting hole is arranged at a height of 0.2m from the upper edge of the filling retaining wall 7, an overflow pipe 10 with the same diameter as that of the filling pipeline 3 is arranged in the mounting hole, and the overflow pipe 10 is introduced into an adjacent empty area or a buffer pool to be filled.
(4) The stoping access 6 adopts tailing cementing material to fill (filling the pipeline 3) in times, the concentration of filling slurry is not lower than 65%, before and after each filling, a three-way valve 1 is used for discharging the pipe leading water and the pipe washing water of the filling pipeline 3 with the inlet connected into a dead zone or a buffer pool to be filled through a drain pipe 8. When the filling is carried out for the second time before the top contact filling, the washing water is directly discharged to the filling area without being introduced into the area to be filled or the buffer pool by the three-way valve 1. However, after the last filling, the height difference between the liquid level of the filling slurry at the inlet of the stoping inlet 6 and the top plate at the inlet is not more than 0.8-1 m.
If after the last filling, the area from the head of the stoping access to the middle of the stoping access is connected with the roof, the washing water forms a water-guiding channel at the highest position of the top plate of the stoping access 6 along the trend (the stoping access 6 of the arched top plate is generally in the central area of the access) under the action of the pressure in the filling pipeline 3, the blockage between the area of the stoping access without the roof and the sand-discharging chamber 5 at the head of the stoping access can not be caused, and the last filling and roof connecting can not be operated.
(5) When the top-contacting filling is carried out for the last time, the pipe leading water is directly discharged into the stoping inlet 6 through the filling pipeline 3 connected with the inlet of the three-way valve 1, the three-way valve 1 and the filling pipeline 3 connected with the outlet of the three-way valve 1 in sequence so as to ensure the smooth pipeline, but the concentration and the sand-lime ratio of the top-contacting filling for the last time are improved, namely the concentration of the filling slurry is not lower than 67 percent, and the sand-lime ratio is not lower than 1: 4. Since the specific gravity of the filling slurry is high and the specific gravity of the lead water is low, the lead water floats on the filling slurry and is eventually discharged out of the way by the overflow pipe 10 or oozed out of the way by the filling retaining wall 7.
When the last time of roof-contacted filling and discharging of the wash pipe water, if the water guide channel between the middle of the stoping intake 6 and the sand-discharging chamber 5 is blocked, so that the wash pipe water can not flow from the head of the stoping intake 6 to the filling retaining wall 7, the three-way valve 11 can be switched, the filling pipeline 3 is sawn off at the inner side of the filling retaining wall 7, and the outside-in forward filling is adopted until the roof of the stoping intake 6 is roof-contacted.
(6) When the top of the filling pipe is connected with the top of the retaining wall 7 for the last time, the operator observes the rising condition of the liquid level of the filling slurry at the position of the filling retaining wall 7, when the liquid level of the filling slurry exceeds the elevation of the top plate at the inlet of the inlet, or when the overflow pipe discharges the redundant filling slurry, the three-way valve 11 is opened to discharge the residual tailing material and the subsequent washing water in the filling pipeline 3 into the empty area to be filled or the buffer pool through the drain pipe 8, and the filling operation is stopped at the same time. Because the filling slurry in the filling pipeline 3 has certain pressure, after the head of the stoping route 6 is connected with the roof, the filling slurry can flow to the opening of the stoping route 6 by extrusion from the head of the stoping route 6 under the action of the pressure, and air in the stoping route 6 is discharged in the process, so that the filling and roof connection are realized. When the local top plate is uneven and has a vacant area, the filling pipeline 3 arranged on the top plate of the stoping access 6 has certain vibration or jitter in the process of quick flow of filling slurry, and the vibration or jitter is transmitted to the filling slurry in the region to form the vibration extrusion effect, so that the air in the uneven region of the top plate is accelerated to be discharged, and the final efficient filling and roof contact is realized.
(7) The next day after filling, the filling pipe 3 is sawed off from the filling retaining wall 7, and the overflow pipe 10 is removed to finish filling.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (7)
1. A comprehensive filling and roof-contacting method for a stoping access is characterized in that: the method comprises the following steps:
(1) each stoping route is constructed downwards from the opening, a top plate at the head of the stoping route is lower than a top plate at the opening, if the length of the stoping route is less than a preset range, a filling roadway perpendicular to the route direction is constructed at the head of each stoping route, and a plurality of adjacent stoping routes are communicated;
(2) the top plate close to the head of the stoping access or the top plate of the middle point in the filling roadway is obliquely and upwards jacked to form a triangular sand-discharging chamber, the filling pipeline is led to the sand-discharging chamber along the stoping access top plate or the filling roadway top plate, and the outlet of the filling pipeline is firmly suspended at the sand-discharging chamber top plate;
(3) at the intersection of the stoping access entrance and the main connecting roadway, obliquely upward jacking to form a retaining wall chamber, erecting an upper open type filling retaining wall at the position corresponding to the highest point, and raising the upper edge of the filling retaining wall above the stoping access top plate; the filling pipeline enters the stoping route along the upper edge of the filling retaining wall, a three-way valve is arranged outside the inlet of the stoping route, the inlet and one outlet of the three-way valve are both connected with the filling pipeline, the filling pipeline connected with the outlet enters the stoping route, the other outlet of the three-way valve is connected with a drain pipe, and the drain pipe is communicated with a dead zone to be filled or a buffer pool; the upper part of the filling retaining wall is provided with a mounting hole, an overflow pipe is mounted in the mounting hole, one end of the overflow pipe leads to a stoping route, and the other end leads to an adjacent empty zone to be filled or a buffer pool;
(4) the stoping route adopts tailing cementing material to fill in times, before and after each filling, a three-way valve is used for discharging a guide pipe water and a washing pipe water of a filling pipeline connected with an inlet of the stoping route into a to-be-filled dead zone or a buffer pool through a drain pipe; when the pipe washing water is filled for the second time before top-contacting filling, the pipe washing water is directly discharged to a filling area through a filling pipeline connected with an outlet of a three-way valve, and the pipe washing water is not introduced into an area to be filled or a buffer pool by a drain pipe connected with the three-way valve; after the last filling, the height difference between the liquid level of the filling slurry at the inlet of the stoping access and the top plate at the inlet of the stoping access is not larger than the preset range;
(5) when the top-contacting filling is carried out for the last time, the water of the guide pipe is directly discharged into the stoping access to ensure the pipeline to be smooth, but the concentration of the filling slurry for top-contacting filling for the last time and the sand-lime ratio in the tailing cementing material should be improved; because the filling slurry has high specific gravity and the water of the guide pipe has low specific gravity, the water of the guide pipe floats on the filling slurry and is finally discharged out of the stoping inlet path through the overflow pipe or seeps out of the stoping inlet path along the upper edge of the filling retaining wall;
(6) and during the last roof-contacted filling, a person observes the rising condition of the liquid level of the filling slurry at the filling retaining wall, and when the liquid level of the filling slurry exceeds the height of a top plate at the inlet of the stoping access or when the overflow pipe discharges the redundant filling slurry, the three-way valve is opened, the residual tailing cementing material and the subsequent washing water in the filling pipeline are discharged into a dead zone to be filled or a buffer pool, and the filling operation is stopped.
2. The integrated filling and roof contacting method of the stoping route according to claim 1, characterized in that: the step (5) further comprises:
when the last time of top connection filling and discharging of the wash pipe water, if the water guide channel between the middle of the stoping access and the sand-discharging chamber is blocked so that the wash pipe water cannot flow from the head of the stoping access to the filling retaining wall, the three-way valve is switched, the filling pipeline is sawn off at the inner side of the filling retaining wall, and the filling is carried out in the forward direction from outside to inside until the top plate of the stoping access is connected with the top.
3. The integrated filling and roof contacting method of the stoping route according to claim 1, characterized in that: the step (1) specifically comprises the following steps:
and (3) constructing downwards at the opening of each stoping access, wherein the gradient is minus 1 to minus 5 percent, the elevation of a top plate at the head of each stoping access is 30 to 60cm lower than that of the top plate at the opening, and if the length of each stoping access is less than 20 to 25m, constructing a filling roadway perpendicular to the direction of the access at the head of each stoping access and penetrating through 2 to 3 adjacent stoping accesses.
4. The integrated filling roof contacting method of the stoping access according to claim 3, characterized in that: the step (2) specifically comprises the following steps:
and (3) obliquely upward jacking a top plate 2-5 m away from the head of the stoping access or a top plate at the middle point in the filling roadway for 1.5m to form a triangular sand-discharging chamber.
5. The integrated filling and roof contacting method of the stoping route according to claim 4, wherein: the step (3) specifically comprises the following steps:
at the intersection of the stoping access entrance and the main connecting channel, 1.5-2 m of roof is obliquely lifted upwards to form a retaining wall chamber, an upper open type filling retaining wall is erected at the position corresponding to the highest point, and the upper edge of the filling retaining wall is 0.3-0.5 m higher than the stoping access roof;
the distance between the mounting hole and the upper edge of the filling retaining wall is 0.2 m; and an overflow pipe with the diameter same as that of the filling pipeline is arranged in the mounting hole.
6. The integrated filling and roof contacting method of the stoping route according to claim 5, wherein: the step (4) specifically comprises the following steps:
the stoping drift is filled by tailing cementing materials in a grading way, and the concentration of filling slurry is not lower than 65%;
after the last filling, the height difference between the liquid level of the filling slurry at the inlet of the stoping feed line and the top plate at the inlet of the stoping feed line is not more than 0.8-1 m.
7. The integrated filling and roof contacting method of the stoping route according to claim 6, wherein: the step (5) specifically comprises the following steps:
the concentration of filling slurry for the last filling top contact is not lower than 67%, and the ash-sand ratio is not lower than 1: 4.
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| CN202010366866.XA CN111472835B (en) | 2020-04-30 | 2020-04-30 | Comprehensive filling and roof connecting method for stoping access |
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| CN202010366866.XA CN111472835B (en) | 2020-04-30 | 2020-04-30 | Comprehensive filling and roof connecting method for stoping access |
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| CN111472835B true CN111472835B (en) | 2021-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111980704B (en) * | 2020-08-31 | 2022-04-19 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Stope top-contacting filling method suitable for downward high-sublevel filling mining method |
| CN114046176B (en) * | 2021-11-10 | 2022-11-11 | 长沙矿山研究院有限责任公司 | Access stope filling and roof connecting device and method |
| CN114183194A (en) * | 2021-12-14 | 2022-03-15 | 长沙矿山研究院有限责任公司 | Filling roof-contacting method |
| CN114961844A (en) * | 2022-06-17 | 2022-08-30 | 中南大学 | Method for improving large-section drift filling mining efficiency and roof contact rate |
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