CN111706392B - Plugging and constructing method suitable for abandoned mine hole and mine tunnel - Google Patents
Plugging and constructing method suitable for abandoned mine hole and mine tunnel Download PDFInfo
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- CN111706392B CN111706392B CN202010425951.9A CN202010425951A CN111706392B CN 111706392 B CN111706392 B CN 111706392B CN 202010425951 A CN202010425951 A CN 202010425951A CN 111706392 B CN111706392 B CN 111706392B
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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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
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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
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Abstract
The invention discloses a plug suitable for a left mine hole and a mine tunnel and a construction method thereof. According to the invention, the side walls of the mine hole and the tunnel are isolated by the interlayer wall, the internal spaces of the mine hole and the tunnel are isolated into a plurality of sectional filling units, materials, tailings and waste low-grade ores are filled into each sectional filling unit, and composite flora containing SRB and a long-acting carbon source are sprayed on the surfaces of the filling materials so as to inhibit the oxidation and reduction of sulfides and precipitate heavy metals; the sandwich wall body is composed of wall bodies arranged in parallel and hydrophobic particle materials filled between the sandwich layers, the upper end of the sandwich wall body and the top of the tunnel are plugged by foam concrete within a certain height range, if the pressure in the tunnel is too high due to reasons such as rainy season and the like, the foam concrete layer has lower strength, so that the top end is locally cracked to form a similar pressure release valve, the cracking and the collapse of the wall body caused by too high water pressure in the tunnel can be effectively avoided, and the safety of plugging of the sectional type filling unit is guaranteed.
Description
Technical Field
The invention relates to the technical field of pollution control of mining abandoned mine holes and mine tunnels, in particular to a plug suitable for the abandoned mine holes and the mine tunnels and a construction method thereof, and aims to solve the problems of acidic wastewater discharge, space resource utilization and the like of the abandoned mine holes and the mine tunnels.
Background
Along with economic development, the demand for mineral resources is continuously improved, a large number of mine holes and mine tunnels left after mining are not effectively treated, a large number of waste ores and mining surfaces are exposed in the environment and are in contact reaction with oxygen, water and the like for a long time, and toxic and harmful heavy metals and acidic wastewater are released.
The ores are associated with various elements, wherein the most kinds of sulfur associated ores, such as copper ores, lead-zinc ores, high-sulfur coal and the like, belong to high-sulfur ores, the mining activities of the ores have influence on the mine environment mainly manifested by mine stripping and open-air stacking of low-grade ores and concentrated stacking of tailings, and mine holes and tunnels left after mining are also exposed to water and air. Therefore, the discarded low-grade ores and tailings, together with exposed pit walls, undergo complex physical, biological and chemical processes under the influence of infiltration of groundwater and atmospheric precipitation to generate acidic wastewater which seriously affects the ecological environment. Especially in the south, a large amount of rainwater and lateral groundwater enter the mine cavern, and are constantly soaked and invaded, causing a large amount of pollutants to flow out of the mine cavern along with water flow, resulting in the risk of environmental pollution.
At present, the treatment of mine holes and mine tunnels is generally mainly focused on the work of collapse prevention and the like, only internal filling and outlet plugging are adopted, but the problem of acidic wastewater caused by infiltration of underground water and rainfall is not fully considered, and the generation of the acidic wastewater cannot be effectively avoided. At the same time, the filled material is mostly peripheral waste ore, and the risk of wastewater discharge is further aggravated after the material rich in potential pollutants is filled in.
Based on the existing problems, the design of the sandwich type water-blocking and air-isolating anti-seepage wall realizes water-blocking, air-isolating and sectional type filling of the mine hole and the tunnel so as to control pollution generation at the source, can ensure the safety of centralized disposal of low-grade waste ore and tailings, and is beneficial to solving the problems of acid wastewater discharge of the left mine hole, space resource utilization of the waste mine hole and the like.
Disclosure of Invention
Aiming at the problems of mine holes and underground tunnels acidic waste water discharge, space resource utilization and the like caused by a large amount of water flow caused by mine holes, underground tunnels and mountain fractures formed in mining, the invention provides a plugging and constructing method suitable for the left mine holes and mine underground tunnels, so as to inhibit the oxidation of sulfur-containing ores and control the water flow to infiltrate into the mine holes and underground tunnels and the discharge of acidic waste water.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the plugging comprises a side interlayer wall body which is parallel to the side wall of the left ore hole or the mine tunnel, an interlayer space is arranged in the side interlayer wall body, a hydrophobic particle material is filled in the interlayer space and extends to the top end of the left ore hole or the mine tunnel at the upper end, so that a closed space is formed, a plurality of interval interlayer wall bodies are transversely arranged in the closed space from inside to outside to divide the closed space into a plurality of sectional type filling units, the sectional type filling units are filled with the hydrophobic particle material, tailings and waste low-grade ores, and a plugging layer is arranged between the upper end of the interval interlayer wall body and the top end of the left ore hole or the mine tunnel.
Furthermore, an interlayer space is arranged in the interlayer wall body, and hydrophobic particle materials are filled in the interlayer space.
Furthermore, the height of the space between the interlayer wall body and the reserved empty space at the top end of the left mine hole or mine tunnel is 5-30 cm, and the height of the blocking layer is 5-30 cm.
Further, the blocking layer is a foam concrete layer.
And further, the sectional type filling unit is filled with the sulfate reducing bacteria solution which is prepared by spraying through an injection pump.
Further, the sulfate reducing bacteria agent solution is prepared according to the following steps of maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: the water ratio is 1:2.5:2: 100.
Further, the sulfate reducing bacteria agent solution is sprayed according to the dosage range of 10 kg-200 kg of the sulfate reducing bacteria agent solution per ton of the filling material.
Furthermore, the interlayer distance of the interlayer space of the side interlayer wall body is not less than 8cm, and the interlayer thickness is not less than 5 cm.
Furthermore, the interlayer wall body consists of a front wall and a rear wall, the distance between the front wall and the rear wall is 10cm, the thickness of the front wall and the thickness of the rear wall are 20cm, and the interlayer wall body is a reinforced concrete wall.
The invention also provides a construction method suitable for plugging the legacy mine hole and the mine tunnel, which is used for constructing any one of the plugs suitable for the legacy mine hole and the mine tunnel, and comprises the following steps:
step 1: cleaning broken stones in the left mine hole and the mine tunnel, leveling the bottoms of the mine hole and the mine tunnel, and determining a plugging area;
step 2: in consideration of lateral water seepage of the left mine hole and the mine tunnel, a side interlayer wall body is built in the mine hole and tunnel plugging area close to the side wall;
and step 3: filling hydrophobic particle materials into the interlayer space of the side interlayer wall, and building the side interlayer wall to the top end of the left mine hole or the mine tunnel after filling to form a closed space to prevent the loss of hydrophobic particles;
and 4, step 4: a plurality of interval interlayer walls are transversely arranged from inside to outside to the opening of the closed space to form a plurality of sectional filling units, hydrophobic granular materials, tailings and waste low-grade ores are filled in each sectional filling unit, and adjacent sectional filling units are separated by the interval interlayer walls;
and 5: according to the maltodextrin, the weight ratio of the maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: preparing a sulfate reducing bacteria agent solution with the water ratio of 1:2.5:2: 100;
step 6: spraying the prepared sulfate reducing bacteria solution onto the filling material in the sectional type filling unit, wherein the dosage range of the sulfate reducing bacteria solution of each ton of the filling material is 10 kg-200 kg;
and 7: after each sectional type filling unit is filled, a spacing interlayer wall body is built outside the sectional type filling unit, hydrophobic particle materials are filled in an interlayer space of the sectional type filling unit, and the height range of a reserved vacant space at the top end of the spacing interlayer wall body is 5-30 cm;
and 8: building and sealing the upper end of the interlayer space of the interlayer wall body, and plugging the upper end of the interlayer wall body and the reserved vacant space at the top end of the left mine hole or the mine tunnel by foam concrete to form a plugging layer, wherein the height range of the plugging layer is 5-30 cm;
step 10: and filling materials, building an interval interlayer wall body and plugging to the hole one by one from inside to outside by each sectional type filling unit according to the steps.
The invention has the following beneficial effects:
1) according to the invention, through the design of the interlayer wall body, the hydrophobic particle materials are filled, so that the stress deformation can be effectively resisted, and the long-term stable effective seepage prevention is ensured;
2) according to the invention, through the design of the sectional type filling units, the stability of the filling material can be enhanced, and the safety of the plugging structure is ensured; the water and gas barrier effect among the sectional type filling units can be enhanced, the internal oxidation is inhibited, the stability of sulfur-containing minerals is ensured, and the generation of pollutants is controlled from the source;
3) the top end of the partition interlayer wall body is plugged by a foam concrete layer with lower strength, so that the risk of the overall collapse of plugging materials due to overlarge internal pressure can be effectively avoided;
4) the filling of sectional type filling unit has made full use of the space to stack low-grade ore and tailing to prevent its open air and stack oxidation, eluviation pollution that bring, control the production and the emission of acid waste water from the source, and solve ore hole and gallery space resource utilization problem.
Drawings
The invention will be further described with reference to the accompanying drawings and specific embodiments,
FIG. 1 is a schematic structural diagram of the present invention suitable for plugging a left-over mine opening and a mine tunnel;
FIG. 2 is a schematic structural view of the partition sandwich wall of the present invention;
the label names corresponding to the respective numbers in the figure are as follows:
1-side interlayer wall, 2-interval interlayer wall, 21-front wall, 22-rear wall, 23-blocking layer and 3-sectional filling unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
A plug suitable for a left-over mine hole and a mine tunnel.
Referring to fig. 1-2, the plug includes a side interlayer wall 1 parallel to the sidewall of the left mine hole or mine tunnel, an interlayer space is provided in the side interlayer wall 1, the interlayer space is filled with hydrophobic particle materials, and the upper end of the interlayer space extends to the top end of the left mine hole or mine tunnel, so as to form a closed space, prevent the loss of the hydrophobic particle materials, and ensure the anti-seepage function of the interlayer wall.
The closed space is transversely provided with a plurality of interlayer walls 2 from inside to outside to the hole, so that the closed space is divided into four sectional filling units 3. Interlayer spaces are also arranged in the interlayer wall body 2, and hydrophobic particle materials are filled in the interlayer spaces. Hydrophobic particle materials, tailings and waste low-grade ores are filled in each sectional type filling unit 3, and a blocking layer 23 is arranged between the upper end of the interlayer wall 2 and the top end of the left ore hole or mine tunnel. And the sectional type filling unit 3 is filled with the sulfate reducing bacteria solution which is prepared by spraying through an injection pump.
Optionally, the height of the spacing interlayer wall body 2 and the reserved empty space at the top end of the left mine hole or mine tunnel is 5-30 cm, and the height of the blocking layer 23 is correspondingly 5-30 cm.
Optionally, the blocking layer 23 is a foam concrete layer, and blocking is performed through the foam concrete layer with low strength, so that the risk that the whole blocking material collapses due to overlarge internal pressure can be effectively avoided.
Sulfate reducing bacteria agent solution according to maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: the water ratio is 1:2.5:2: 100. The sulfate reducing bacteria agent solution is sprayed according to the dosage range of 10 kg-200 kg of the sulfate reducing bacteria agent solution per ton of the filling material.
Optionally, the interlayer distance of the interlayer space of the side interlayer wall 1 is not less than 8cm, and the interlayer thickness is not less than 5 cm. The partition sandwich wall body 2 consists of a front wall 21 and a rear wall 22, the distance between the front wall 21 and the rear wall 22 is 10cm, the thickness of the front wall 21 and the thickness of the rear wall 22 are 20cm, and the partition sandwich wall body is a reinforced concrete wall.
Example 2
The embodiment is a building method suitable for plugging a legacy mine hole and a mine tunnel, and the method is used for building the plug suitable for the legacy mine hole and the mine tunnel in the embodiment 1 and comprises the following steps:
step 1: cleaning broken stones in the left mine hole and the mine tunnel, leveling the bottoms of the mine hole and the mine tunnel, and determining a plugging area;
step 2: in consideration of lateral water seepage of the left mine cave and the mine tunnel, a side interlayer wall body 1 is built near the side wall in the mine cave and tunnel plugging area;
and step 3: filling hydrophobic particle materials into the interlayer space of the side interlayer wall body 1, and building the side interlayer wall body 1 to the top end of the left mine hole or the mine gallery after the filling is finished to form a closed space to prevent the loss of hydrophobic particles;
and 4, step 4: a plurality of partition interlayer walls 2 are transversely arranged from inside to outside to the opening of the closed space to form a plurality of sectional filling units 3, hydrophobic granular materials, tailings and waste low-grade ores are filled in each sectional filling unit 3, and adjacent sectional filling units 3 are separated by the partition interlayer walls 2;
and 5: according to the maltodextrin, the weight ratio of the maltodextrin: sludge of municipal sewage treatment plants: sulfate Reducing Bacteria (SRB): preparing a sulfate reducing bacteria agent solution with the water ratio of 1:2.5:2: 100;
step 6: spraying the prepared sulfate reducing bacteria solution onto the filling material in the sectional type filling unit 3, and spraying according to the dosage range of 10 kg-200 kg of the sulfate reducing bacteria solution of each ton of the filling material;
and 7: after each sectional type filling unit 3 is filled, a spacing interlayer wall body 2 is built outside the sectional type filling unit, hydrophobic particle materials are filled in an interlayer space of the sectional type filling unit, and the height range of a reserved vacant space at the top end of the spacing interlayer wall body 2 is 5-30 cm;
and 8: building and sealing the upper end of the interlayer space of the interlayer wall body 2, and plugging the upper end of the interlayer wall body 2 and the reserved vacant space at the top end of the left mine hole or mine tunnel by foam concrete to form a plugging layer 23, wherein the height range of the plugging layer 23 is 5-30 cm;
step 10: and filling materials, establishing the interlayer wall body 2 and plugging the interlayer wall body to the hole one by one from inside to outside by the sectional type filling units 3.
Example 3
Aiming at the mine holes left by exploiting the sulfur-containing copper ores, the following mode is adopted in order to prevent water and oxygen from entering the mine holes and achieve the purpose of blocking the oxidation path of sulfides.
Step 1: cleaning broken stones in the left mine hole, leveling the bottom, selecting a tunnel area with the length of 36m after cleaning and close to the mine hole as a plugging area, wherein the width of the inside of the tunnel area is 2.5-10.0 m, the width of a tunnel opening is 6.5m, and the height of the tunnel is 1.5-2.4 m;
step 2: considering the lateral water seepage of underground water, the side wall in the mine tunnel is provided with a side interlayer wall body 1, one end of a plugging area close to the interior of the tunnel is built with an interval interlayer wall body 2, the total length of the two wall bodies is 81m, the distance between interlayers of the side interlayer wall bodies 1 is 8cm, the thickness of the interlayer is 15cm, and the side interlayer wall body consists of cement and gravel;
and step 3: the interlayer space of the side interlayer wall body 1 is filled with 100-mesh hydrophobic particle materials to form a section of impervious wall with a waterproof function, and the top of the wall body is connected and plugged with the top of a side hole to prevent the loss of the hydrophobic particle materials;
and 4, step 4: the interior of the mine hole is divided into four sectional filling units 3 from inside to outside, and the four sectional filling units 3 are used for burying materials, tailings and waste low-grade ores, and the number of the filling units is 10m except 6m at the innermost;
and 5: after the materials, tailings and waste low-grade ores are filled into the innermost sectional type filling unit 3, the mass ratio of the materials, the tailings and the waste low-grade ores is determined according to the following maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: preparing a sulfate reducing bacteria agent solution according to the water ratio of 1:2.5:2:100, wherein a long-acting carbon source consisting of sludge and maltodextrin can maintain the long-time growth of the sulfate reducing bacteria;
step 6: pouring the prepared sulfate reducing bacteria solution into the sectional type filling unit 3 from the top by using an injection pump, and achieving the purposes of reducing sulfate and precipitating heavy metals according to the dosage range of 50kg of the sulfate reducing bacteria solution per ton of filling material;
and 7: after filling and spraying of a microbial inoculum solution are finished, constructing an interval interlayer wall body 2 consisting of a front wall 21 and a rear wall 22 at the unit boundary, wherein the distance between the two wall bodies is 10cm, the thickness of a single wall is 20cm, the single wall is a reinforced concrete wall, and the distance between the top of the wall and the top wall of the hole is 20 cm;
and 8: filling 100-mesh hydrophobic particulate matter into the partition interlayer wall body 2 to form a section of impervious wall with different waterproof heights of 1.3-2.2 m;
and step 9: the top ends of the front wall 21 and the rear wall 22 are sealed by cement mortar to form an interlayer space, and then the space between the interlayer wall 2 and the top wall of the mine tunnel is sealed by a foam concrete layer with the height of 20 cm;
step 10: the sectional filling units 3 are completed one by one from inside to outside according to the operation until reaching the hole.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a shutoff suitable for leave over mine hole and mine gallery which characterized in that: the plugging device comprises a side interlayer wall body which is arranged in parallel with the side wall of the left ore hole or the mine tunnel, an interlayer space is arranged in the side interlayer wall body, the interlayer space is filled with hydrophobic granular materials and extends to the top end of the left ore hole or the mine tunnel at the upper end to form a closed space, a plurality of interval interlayer walls are transversely arranged in the closed space from inside to outside so as to divide the closed space into a plurality of sectional filling units, the sectional filling units are filled with the hydrophobic granular materials, tailings and waste low-grade ores, sulfate reducing microbial inoculum solution is prepared by spraying through a sectional injection pump after the filling of the sectional filling units is completed, and a plugging layer is arranged between the upper end of the interval interlayer wall body and the top end of the left ore hole or the mine tunnel.
2. The plug for the abandoned mine hole and the mine tunnel according to claim 1, wherein: an interlayer space is arranged in the interlayer wall body, and hydrophobic particle materials are filled in the interlayer space.
3. A plug suitable for use in a abandoned mine hole and mine excavation according to claim 1 or 2, wherein: the height of the space interlayer wall body and the reserved empty space at the top end of the left mine hole or mine tunnel is 5-30 cm, and the height of the blocking layer is 5-30 cm.
4. A plug suitable for use in a abandoned mine hole and mine tunnel according to claim 3, wherein: the blocking layer is a foam concrete layer.
5. The plug for the abandoned mine hole and the mine tunnel according to claim 1, wherein: the sulfate reducing agent solution is prepared by mixing maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: the water ratio is 1:2.5:2: 100.
6. The plug for the abandoned mine hole and the mine tunnel according to claim 1, wherein: the sulfate reducing bacteria agent solution is sprayed according to the dosage range of 10 kg-200 kg of the sulfate reducing bacteria agent solution per ton of the filling material.
7. The plug for the abandoned mine hole and the mine tunnel according to claim 1, wherein: the interlayer distance of the interlayer space of the side interlayer wall body is not less than 8cm, and the interlayer thickness is not less than 5 cm.
8. The plug for the abandoned mine hole and the mine tunnel according to claim 1, wherein: the partition interlayer wall body consists of a front wall and a rear wall, the distance between the front wall and the rear wall is 10cm, the thickness of the front wall and the thickness of the rear wall are 20cm, and the partition interlayer wall body is a reinforced concrete wall.
9. A method for constructing plugs suitable for the abandoned mine holes and the mine tunnels, which is used for constructing the plugs suitable for the abandoned mine holes and the mine tunnels according to any one of claims 1 to 8, and comprises the following steps:
step 1: cleaning broken stones in the left mine hole and the mine tunnel, leveling the bottoms of the mine hole and the mine tunnel, and determining a plugging area;
step 2: in consideration of lateral water seepage of the left mine hole and the mine tunnel, a side interlayer wall body is built in the mine hole and tunnel plugging area close to the side wall;
and step 3: filling hydrophobic particle materials into the interlayer space of the side interlayer wall, and building the side interlayer wall to the top end of the left mine hole or the mine tunnel after filling to form a closed space to prevent the loss of hydrophobic particles;
and 4, step 4: a plurality of interval interlayer walls are transversely arranged from inside to outside to the opening of the closed space to form a plurality of sectional filling units, hydrophobic granular materials, tailings and waste low-grade ores are filled in each sectional filling unit, and adjacent sectional filling units are separated by the interval interlayer walls;
and 5: according to the maltodextrin, the weight ratio of the maltodextrin: sludge of municipal sewage treatment plants: sulfate reducing bacteria agent: preparing a sulfate reducing bacteria agent solution with the water ratio of 1:2.5:2: 100;
step 6: spraying the prepared sulfate reducing bacteria solution onto the filling material in the sectional type filling unit, wherein the dosage range of the sulfate reducing bacteria solution of each ton of the filling material is 10 kg-200 kg;
and 7: after each sectional type filling unit is filled, a spacing interlayer wall body is built outside the sectional type filling unit, hydrophobic particle materials are filled in an interlayer space of the sectional type filling unit, and the height range of a reserved vacant space at the top end of the spacing interlayer wall body is 5-30 cm;
and 8: building and sealing the upper end of the interlayer space of the interlayer wall body, and plugging the upper end of the interlayer wall body and the reserved vacant space at the top end of the left mine hole or the mine tunnel by foam concrete to form a plugging layer, wherein the height range of the plugging layer is 5-30 cm;
step 10: and filling materials, building an interval interlayer wall body and plugging to the hole one by one from inside to outside by each sectional type filling unit according to the steps.
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| SU872778A1 (en) * | 1979-12-14 | 1981-10-15 | Днепропетровский Ордена Трудового Красного Знамени Горный Институт Им. Артема | Filling-in partition |
| CN101705838A (en) * | 2009-11-05 | 2010-05-12 | 冀中能源邯郸矿业集团有限公司 | Separate type filling method of goaf |
| CN102155259A (en) * | 2011-03-08 | 2011-08-17 | 北京科技大学 | Filling retaining wall constructed by using tunneling waste stones, and construction method of retaining wall |
| CN102777208A (en) * | 2012-08-02 | 2012-11-14 | 兖州煤业股份有限公司 | Method for constructing mining impact-resisting sealed wall |
| CA2654815C (en) * | 2008-05-12 | 2015-11-24 | Jack Kennedy Metal Products & Buildings, Inc. | Mine seal with electrically non-conductive ties |
| CN110056390A (en) * | 2019-04-23 | 2019-07-26 | 中国矿业大学(北京) | A kind of underground put tunnel crude tailings consolidation disposal system and its method of disposal aside as useless |
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2020
- 2020-05-19 CN CN202010425951.9A patent/CN111706392B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU872778A1 (en) * | 1979-12-14 | 1981-10-15 | Днепропетровский Ордена Трудового Красного Знамени Горный Институт Им. Артема | Filling-in partition |
| CA2654815C (en) * | 2008-05-12 | 2015-11-24 | Jack Kennedy Metal Products & Buildings, Inc. | Mine seal with electrically non-conductive ties |
| CN101705838A (en) * | 2009-11-05 | 2010-05-12 | 冀中能源邯郸矿业集团有限公司 | Separate type filling method of goaf |
| CN102155259A (en) * | 2011-03-08 | 2011-08-17 | 北京科技大学 | Filling retaining wall constructed by using tunneling waste stones, and construction method of retaining wall |
| CN102777208A (en) * | 2012-08-02 | 2012-11-14 | 兖州煤业股份有限公司 | Method for constructing mining impact-resisting sealed wall |
| CN110056390A (en) * | 2019-04-23 | 2019-07-26 | 中国矿业大学(北京) | A kind of underground put tunnel crude tailings consolidation disposal system and its method of disposal aside as useless |
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