CN114075994A - Artificial retaining dam for coal mine underground reservoir - Google Patents
Artificial retaining dam for coal mine underground reservoir Download PDFInfo
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- CN114075994A CN114075994A CN202010813545.XA CN202010813545A CN114075994A CN 114075994 A CN114075994 A CN 114075994A CN 202010813545 A CN202010813545 A CN 202010813545A CN 114075994 A CN114075994 A CN 114075994A
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- 239000003245 coal Substances 0.000 title claims abstract description 68
- 239000011435 rock Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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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
- E21F16/00—Drainage
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides a multilayer artificial retaining dam with foundation plates, wherein the artificial retaining dam is positioned between coal pillar dam bodies and used for isolating an underground reservoir and a roadway, and two ends of the artificial retaining dam penetrate into the coal pillar dam bodies, the artificial retaining dam comprises a multilayer dam body structure layer positioned between the coal pillar dam bodies, and the foundation plates are arranged at the bottom of the multilayer dam body structure layer. The foundation plate is arranged at the lower part of the artificial retaining dam body of the coal mine underground reservoir, so that the punching stress of the dam body on the bottom plate of the roadway under the pressure of surrounding rocks of the roadway is reduced, the stability of the dam body and the whole dam body is improved, and the safety is improved.
Description
Technical Field
The invention relates to the crossing field of mining engineering and hydraulic engineering, in particular to an artificial retaining dam of a coal mine underground reservoir.
Background
The energy "Jinjian" (Jinshanmenganning) coal resource has the characteristics of shallow buried depth, thin bedrock, coal bed thickness and the like, 23.82 hundred million tons of coal in the area in 2011 accounts for 67.7 percent of the total yield of the whole country, and becomes the main production area of the coal resource in China. However, the western energy golden triangle is vulnerable to the ecological environment, and the region has a dry long-term climate, is short of water resources and is uneven in space-time distribution. Taking the northern Shaanxi area as an example, the area is inland, the rainfall is rare, the evaporation capacity is large, and the per capita water resource is only 927 cubic meters, and belongs to a typical resource type water shortage area.
Large-scale high-strength coal mining is implemented in the area, and negative influence on water resources cannot be avoided. The tunnels and the goafs formed by coal mining affect the migration and occurrence states of surface water and underground water, change the circulation rule of the underground water, and cause a series of problems, such as river water cutoff, underground water level reduction, spring water flow sharp reduction or drying. At present, the main implementation measure is mine water drainage. Mine water is discharged outside to cause various disadvantages, on one hand, water resource waste is caused, and on the other hand, the pollution is caused to the surface ecological environment.
Therefore, the key technology of water conservation mining in the energy golden triangle area is how to realize that mine water is not discharged outside, and underground coal mining can form a goaf, if the goaf can be utilized, the mine water in the coal mining process is stored in the space to build an underground reservoir, and meanwhile, engineering measures are taken to realize filtration and purification of water resources underground, and the drilled holes are communicated with the ground, so that conditions are provided for future water resource utilization. The artificial water-proof dam is positioned at the joints of the return airway, the transportation lane and the main lane of each goaf forming the coal mine underground reservoir and the like, and is an important link for reservoir construction, the structural design of the artificial water-proof dam is related to the operation safety of the underground reservoir, particularly, the joint of the artificial water-proof dam and the coal pillar dam is a weak link for the safety of the reservoir dam body, and how to ensure the safety and stability of the dam body through scientific and reasonable design is a key link for the construction of the artificial water-proof dam and also a determinant factor for the operation safety of the reservoir.
At present, the construction of the water retaining dam of the coal mine distributed underground reservoir is further researched and designed. The construction of water gates and water gate walls in coal mine safety regulations and coal mine water control regulations is standardized, and the long-term effect of water storage of an underground reservoir is not considered mainly based on the angle of water control; in the aspect of hydraulic engineering, the dam body construction of the ground reservoir is specified in more detail, but the dam body construction of the ground reservoir is obviously different from the water retaining dam construction of the underground reservoir.
Comparing the dam body of the coal mine underground reservoir with the dam body of the ground reservoir, wherein the dam body of the ground reservoir is only under the action of water pressure and self gravity; the dam body of the coal mine underground reservoir is complex in stress and not only is under the action of water pressure, but also is impacted by collapse of rock strata because rock strata above the underground reservoir does not reach a stable state, and mining, mine earthquake and the like of the same coal seam and different coal seams have certain influence on the dam body.
At present, a great number of manual retaining dams for coal mine underground reservoirs are mainly wall-type retaining dams, undercuts and anchor rods are designed around the manual retaining dams, stress on joints of the manual retaining dams and coal pillar dams is correspondingly reduced, but because the strength of concrete structures of the dams is far greater than that of coal pillar layers of a roadway, and the roadway bottom plates are not processed, when the manual retaining dams bear large surrounding rock pressure, the dams generate large pressure on the bottom plates, so that corresponding bottom plate cracks are increased or local instability damage is possibly caused, and unsafe factors occur.
Therefore, in the existing situation, there is a need to design a dam body to reduce the increase of cracks of the bottom plate and prevent the damage of local instability of the bottom plate, which is an artificial retaining dam for coal mine underground reservoirs, and has important significance for the effective utilization of coal mine underground water and coal mine safety.
Disclosure of Invention
In order to solve the technical problem, the invention provides the multilayer artificial retaining dam with the foundation plates, the foundation plates are arranged at the lower part of the dam body of the artificial retaining dam, the punching stress on the bottom plate of the roadway under the pressure of surrounding rocks of the roadway is reduced, the stability of the dam body and the whole body is improved, and the safety is improved.
The artificial water retaining dam of the coal mine underground reservoir is positioned between coal pillar dam bodies and used for isolating the underground reservoir from a roadway, and two ends of the artificial water retaining dam penetrate into the coal pillar dam bodies, wherein the artificial water retaining dam comprises a plurality of layers of dam body structure layers positioned between the coal pillar dam bodies, and foundation plates are arranged at the bottom of the plurality of layers of dam body structure layers.
In one embodiment, the multiple dam structure layers comprise a supporting layer, an impermeable layer and a concrete structure layer which are sequentially arranged from inside to outside, and two ends and the upper part of the concrete structure layer penetrate into the coal pillar dam and the surrounding rocks embedded around.
In one embodiment, the concrete structural layer is a wall.
In one embodiment, a waterproof layer formed by a waterproof material with a certain thickness is arranged between each structural layer of the multilayer dam body structural layer.
In one embodiment, a plurality of anchor rods are arranged at the joint between the embedded part of the concrete structure layer and the coal pillar dam body, and the anchor rods penetrate through a loose layer of the coal pillar dam body and then are inserted into rock mass surrounding rocks.
In one embodiment, I-shaped steel is arranged in the concrete structure layer, wherein the I-shaped steel is arranged in a shape like a Chinese character jing.
In one embodiment, a pipeline port and a water level monitoring hole are arranged between each structural layer of the multilayer dam body structural layer.
In one embodiment, the support layer is a brick-concrete structure layer with the thickness of 1.5-2.0 m, and the impermeable layer is a gravel structure layer with the thickness of 1.5-2.5 m or a loess structure layer.
In one embodiment, the thickness of the foundation plate is 25-30 cm, the foundation plate is integrally cast into a raft shape, and the foundation plate is formed by extending 50-60 cm in each direction on the multi-layer dam structure layer length and width basis.
In one embodiment, the ratio of the thickness of the concrete structure layer of the artificial dam to the width of the roadway is 0.18-0.20.
In one embodiment, a steel bar connecting part is reserved at the foundation plate, and a steel bar structure is reserved at the position of the concrete structure layer.
Compared with the prior art, the artificial water retaining dam of the coal mine underground reservoir has the following advantages:
1. and embedding the concrete structure layer into the coal pillar dam body and the surrounding rocks, so that the artificial water retaining dam and the surrounding coal pillar dam body or the surrounding rocks are combined together to form the underground reservoir water retaining dam.
2. The raft foundation plate has large bottom area, so that the pressure of the foundation can be reduced, the bearing capacity of foundation soil can be improved, the integrity of the foundation can be effectively enhanced, uneven settlement can be adjusted, the development of rock mass cracks at the lower part of the bottom plate can be effectively reduced, and the instability and damage of the bottom plate can be reduced.
3. The dam body of the artificial retaining dam is designed by a plurality of structural layers, and the seepage-proofing performance and the structural strength of the dam body can meet the water storage requirement of an underground reservoir.
The technical features described above can be combined in various technically feasible ways to produce new embodiments, as long as the object of the invention is achieved.
Drawings
The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:
fig. 1 shows a schematic structural view (top view) of an artificial water dam for a coal mine underground reservoir according to an embodiment of the present invention;
FIG. 2 shows a schematic structural view (B-B section view) of a concrete structural layer of the artificial retaining dam of the coal mine underground reservoir of FIG. 1;
fig. 3 shows a cross-sectional view a-a of the artificial water dam of the coal mine underground reservoir of fig. 1.
In the drawings, like components are denoted by like reference numerals. The figures are not drawn to scale.
Wherein the reference numerals are:
1. a concrete structural layer; 2. an impermeable layer; 3. a support layer; 4. a foundation plate; 5. a pillar dam body; 6. an underground reservoir; 7. a roadway; 8. an anchor rod; 9. i-shaped steel; 10. and (7) surrounding rocks.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
Parts which are not described in the invention can be realized by adopting or referring to the prior art.
The invention provides an artificial retaining dam for a coal mine underground reservoir. As shown in fig. 1 and 3, the artificial water retaining dam of the coal mine underground reservoir of the present invention is located between pillar dams 5 for isolating an underground reservoir 6 and a roadway 7, and both ends of the artificial water retaining dam are inserted into the pillar dams 5, wherein the artificial water retaining dam comprises a plurality of layers of dam structure layers located between the pillar dams 5, and a foundation plate 4 is provided at the bottom of the plurality of layers of dam structure layers.
The artificial retaining dam is used for plugging the underground reservoir 6, and the underground reservoir 6 is used for storing underground water sources of coal mines, so that underground water resources can be recycled conveniently. Because the artificial retaining dam is provided with the foundation plate 4, the pressure of the artificial retaining dam on the surrounding rocks 10 of the bottom plate is effectively reduced, so that the local pressure of the roadway bottom plate is reduced, and the safety is improved.
In one embodiment, as shown in fig. 1, fig. 1 is a schematic structural diagram of an artificial dam, and a multi-layer dam structure layer of the artificial dam comprises a supporting layer 3, an impermeable layer 2 and a concrete structure layer 1 which are sequentially formed in a roadway 7 from inside to outside, wherein the concrete structure layer 1 extends into between coal pillar dams 5 and between upper surrounding rocks 10, and the multi-layer dam structure layer and a foundation slab 4 below a lower bottom plate of the concrete structure layer 1 jointly form the artificial dam. In fig. 1, H represents the thickness of the concrete structural layer 1 of the artificial dam, and L represents the width of the roadway 5. Here, "inner" in the present invention means a side close to the underground water reservoir 6, and "outer" means a side close to the roadway 7.
In a preferred embodiment, the support layer 3 is preferably a brick-concrete structure layer with a thickness of 1.5-2.0 m, and the impermeable layer 2 is preferably a gravel structure layer or a loess structure layer with a thickness of 1.5-2.5 m. In this embodiment, the supporting layer 3 is a 1.5m thick brick-concrete structure layer, the impermeable layer 2 is a 2.0m thick gravel structure layer or loess structure layer, the concrete structure layer is 1.0m, and the total thickness of the artificial dam is 4.5 m.
The supporting layer 3 is composed of a brick-concrete structure layer, can bear part of the water retaining function and can support the surrounding rock 10 above; the anti-seepage layer 2 is a relatively closed wall structure formed by a gravel structure layer or a loess structure layer, so that on one hand, a certain anti-seepage effect is achieved, and meanwhile, waste in the coal mining process is directly used as a raw material, so that the cost is saved; the concrete structure layer 1 has good anti-seepage performance, and meanwhile, the concrete structure layer 1 is embedded into the surrounding coal pillar dam body 5 and the surrounding rock 10, and the strength of the artificial water retaining dam is improved by adding the mechanical property of the concrete.
More preferably, the thickness of the brick-concrete structure layer is not limited to 1.5m, the thickness of the gravel structure layer or the loess structure layer is not limited to 2.0m, and the thickness of the concrete structure layer is not limited to 1.5 m.
In a more preferred embodiment, a rockwell barrier material or other barrier material may be added to the gravel structure layer or the loess structure layer of the barrier layer 2 to enhance the barrier performance of the artificial dam.
In a preferred embodiment, waterproof layers formed by waterproof materials with certain thicknesses are coated between the support layer 3 and the impermeable layer 2 and between the impermeable layer 2 and the concrete structure layer 1, so that the impermeable characteristic of the corresponding structure layer can be effectively improved, and the possibility of the reduction of the waterproof performance such as surface cracks and the like of the multi-layer dam structure layer in the subsequent use can be effectively reduced in the use process.
FIG. 2 is a schematic structural diagram (sectional view B-B) of a concrete structural layer of an artificial dam in an embodiment of the present invention. As shown in fig. 2, two ends of the concrete structure layer 1 extend into the pillar dam 5, and the upper end extends into the surrounding rock 10. Preferably, the depth of the two end sides of the concrete structure layer 1 embedded into the coal pillar dam body 3 is 50-100 cm, and the depth of the upper end of the concrete structure layer 1 penetrating into the surrounding rock 7 is 30-80 cm. The concrete structure layer 1 is provided with an anchor rod 8 at the joint of the embedded part and the coal pillar dam body 5, and the embedded rock body ensures the safety. I-shaped steel 9 arranged in a shape like a Chinese character jing is arranged in the concrete structure layer 1 to be used as a structural support.
Preferably, the anchor rods 8 are inserted into the rock formation (shown) after passing through the loose layers of the pillar dam 5 and the surrounding rock 7. The rock stratum is compact in texture, and after the anchor rod 8 is inserted into the rock stratum, the connection stability of the artificial retaining dam, the coal pillar dam body 5 and the surrounding rock 10 is improved. Preferably, the thickness of the anchor 8 inserted into the rock formation layer is 1 to 1.5 m.
The ratio of the thickness H of the concrete structure layer 1 of the artificial retaining dam to the width L of the roadway 5 is preferably 0.18-0.20. In practical application, the thickness, the surrounding rock embedding depth and the like of the artificial water retaining dam are calculated on the basis of the water storage technical parameters of the underground reservoir, and a safer artificial dam body is formed.
Fig. 3 is a schematic structural diagram (a-a sectional view) of a concrete structure layer, and as shown in fig. 3, pressure and self-gravity of the artificial retaining dam from surrounding rocks 10 are applied to a foundation plate 4 at the lower part of the dam body, so that the situation that the local pressure of the artificial retaining dam to the surrounding rocks 10 of the bottom plate is too high is reduced, the stress area of the foundation at the lower part is effectively increased, the local pressure is reduced, and the local instability and the development of cracks of the surrounding rocks of the bottom plate are reduced. As shown in figures 2 and 3, the bottom foundation part of the artificial retaining dam is a foundation plate 4, the upper surface of the foundation plate is level with surrounding rocks 10 of the bottom plate, the two ends of the foundation plate are inserted into the coal pillar dam body 5, and concrete is poured.
The thickness of the base plate 4 is preferably 25 to 30 cm. Preferably, the foundation plate 4 is formed by extending 50 cm-60 cm in each direction on the basis of the length and the width of the multi-layer dam structure layer. Namely, each side of the boundary of the artificial dam is increased by 50 cm-60 cm to form the final size of the foundation slab 4. Preferably 50cm on each side, as a final dimension, with its upper surface remaining level with the bottom surrounding rock 10.
More preferably, the foundation plate 4 is provided with a steel bar connection part, and a steel bar structure is arranged at the position of the concrete structure layer 1, so that the foundation plate 4 is conveniently connected with the upper concrete structure layer 1, and the foundation plate 4 is integrally cast. Preferably, the foundation plate 4 is cast integrally in raft form.
In a preferred embodiment, a pipeline port and a water level monitoring hole (not shown in the figure) are reserved in the support layer 3, the impermeable layer 2 and the concrete structure layer 1. In order to prevent the influence of sudden increase of water pressure in the reservoir on the safe operation of the underground reservoir, a water level monitoring hole is arranged at a proper position of the artificial retaining dam, so that on one hand, the water pressure water level and the water quality in the reservoir can be observed, sampled and detected by the water level monitoring hole; on the other hand, the valve can be utilized to set the valve starting pressure, so that the valve can be automatically or manually started when the water pressure is warned, and the running safety of the underground reservoir is guaranteed.
It will thus be appreciated by those skilled in the art that while the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (11)
1. The utility model provides a colliery underground reservoir's artifical manger plate dam, artifical manger plate dam be located and be used for keeping apart underground reservoir and tunnel between the coal pillar dam body, and the both ends of artifical manger plate dam are deepened to the coal pillar dam body in, its characterized in that, artifical manger plate dam is including being located multilayer dam structure layer between the coal pillar dam body, the bottom of multilayer dam structure layer is provided with the foundatin plate.
2. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 1, wherein the multiple dam structure layers comprise a supporting layer, an impermeable layer and a concrete structure layer which are arranged from inside to outside in sequence, and both ends and the upper part of the concrete structure layer are embedded into the surrounding pillar dam and the surrounding rock.
3. The artificial water dam for a coal mine underground reservoir according to claim 2, wherein the concrete structural layer is a wall type.
4. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein a waterproof layer formed by waterproof materials with a certain thickness is arranged between each structural layer of the multi-layer dam body structural layer.
5. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein a plurality of anchor rods are arranged at the joint between the embedded part of the concrete structure layer and the coal pillar dam body, and the anchor rods penetrate through the loose layer of the coal pillar dam body and then are inserted into the rock mass surrounding rock.
6. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 5, wherein I-shaped steel is arranged in the concrete structure layer, wherein the I-shaped steel is arranged in a shape of a Chinese character jing.
7. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein a pipeline port and a water level monitoring hole are arranged between each structural layer of the multi-layer dam body structural layer.
8. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein the supporting layer is a brick-concrete structural layer with a thickness of 1.5-2.0 m, and the impermeable layer is a gravel structural layer with a thickness of 1.5-2.5 m or a loess structural layer.
9. The artificial retaining dam for the coal mine underground reservoir as claimed in claim 1, wherein the thickness of the foundation plate is 25-30 cm, the foundation plate is integrally cast into a raft shape, and the foundation plate is formed by extending 50-60 cm in each direction on the basis of the length and width of the multi-layer dam structure layer.
10. The artificial water retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein the ratio of the thickness of the concrete structure layer of the artificial water retaining dam to the width of the roadway is 0.18-0.20.
11. The artificial retaining dam for the coal mine underground reservoir as claimed in claim 2 or 3, wherein a steel bar connection part is reserved at the foundation plate, and a steel bar structure is arranged at the position of the concrete structure layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010813545.XA CN114075994A (en) | 2020-08-13 | 2020-08-13 | Artificial retaining dam for coal mine underground reservoir |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010813545.XA CN114075994A (en) | 2020-08-13 | 2020-08-13 | Artificial retaining dam for coal mine underground reservoir |
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| CN114075994A true CN114075994A (en) | 2022-02-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115928665A (en) * | 2022-12-26 | 2023-04-07 | 中国矿业大学(北京) | Visual dam body for observing dynamic water storage of underground reservoir and construction method |
| CN116219949A (en) * | 2023-02-07 | 2023-06-06 | 国能经济技术研究院有限责任公司 | Artificial dam structure of coal mine underground reservoir and coal mine underground reservoir |
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| CN103422886A (en) * | 2013-08-14 | 2013-12-04 | 中国神华能源股份有限公司 | Artificial retaining dam for coal mine distributed underground reservoir and damming method thereof |
| WO2015021783A1 (en) * | 2013-08-14 | 2015-02-19 | 中国神华能源股份有限公司 | Man-made retaining dam for coal mine underground reservoir, and method for connecting coal pillar dam body, surrounding rock, and same |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
| CN110359957A (en) * | 2019-07-31 | 2019-10-22 | 国家能源投资集团有限责任公司 | A kind of dam body connection structure and its construction method |
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2020
- 2020-08-13 CN CN202010813545.XA patent/CN114075994A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103422886A (en) * | 2013-08-14 | 2013-12-04 | 中国神华能源股份有限公司 | Artificial retaining dam for coal mine distributed underground reservoir and damming method thereof |
| WO2015021783A1 (en) * | 2013-08-14 | 2015-02-19 | 中国神华能源股份有限公司 | Man-made retaining dam for coal mine underground reservoir, and method for connecting coal pillar dam body, surrounding rock, and same |
| US20160201460A1 (en) * | 2013-08-14 | 2016-07-14 | China Shenhua Energy Company Limited | An artificial dam of distributed coal mine underground reservoir and its constructing method |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115928665A (en) * | 2022-12-26 | 2023-04-07 | 中国矿业大学(北京) | Visual dam body for observing dynamic water storage of underground reservoir and construction method |
| CN116219949A (en) * | 2023-02-07 | 2023-06-06 | 国能经济技术研究院有限责任公司 | Artificial dam structure of coal mine underground reservoir and coal mine underground reservoir |
| CN116219949B (en) * | 2023-02-07 | 2023-12-22 | 国能经济技术研究院有限责任公司 | Artificial dam structure of coal mine underground reservoir and coal mine underground reservoir |
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