CN114763695A - Artificial dam body for underground reservoir and construction method thereof - Google Patents
Artificial dam body for underground reservoir and construction method thereof Download PDFInfo
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- CN114763695A CN114763695A CN202110050190.8A CN202110050190A CN114763695A CN 114763695 A CN114763695 A CN 114763695A CN 202110050190 A CN202110050190 A CN 202110050190A CN 114763695 A CN114763695 A CN 114763695A
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000004927 clay Substances 0.000 claims abstract description 37
- 239000000499 gel Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000000017 hydrogel Substances 0.000 claims abstract description 3
- 239000011449 brick Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 59
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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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
- E02B7/02—Fixed barrages
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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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
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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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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Abstract
The invention provides an artificial dam body of an underground reservoir and a construction method thereof, wherein the method comprises the following steps: respectively forming a first groove and a second groove on reserved coal pillars on two sides of a dam foundation of the artificial dam body; secondly, excavating a foundation trench on the dam foundation along the direction from the first groove to the second groove; uniformly paving a certain amount of impounded clay in the foundation trench and tamping, and coating anti-hydrogel on the inner walls of the first groove and the second groove, the top wall of the goaf in the foundation trench and above the foundation trench; and fourthly, constructing the artificial dam body in the foundation trench along the direction from the first groove to the second groove. Based on the technical scheme of the invention, the water storage and water insulation functions of the dam foundation can be improved by paving the water storage argil on the bottom of the dam foundation, so that seepage of the dam foundation is prevented; the sealing performance of the joint of the dam body and the coal pillar can be improved by smearing and anchoring the groove joint with the waterproof gel.
Description
Technical Field
The invention relates to the technical field of coal mine underground reservoirs, in particular to an artificial dam body of an underground reservoir and a construction method thereof.
Background
In western China, an underground reservoir water storage technology becomes an important component of a coal water resource co-mining technology, wherein the stability of an artificial dam body is one of key factors for evaluating whether an underground reservoir can be constructed and used safely for a long time. At present, the seepage pressure and the seepage amount around the water retaining dam are reduced by arranging a seepage-proofing curtain and other measures on the artificial dam, but the seepage-proofing effect is not ideal, and the requirements of the dam body of the underground reservoir on leakage prevention, stability and the like cannot be met.
The seepage of the artificial dam body mainly has two forms of seepage around the dam and seepage at a dam foundation, and most of the artificial dam bodies are vertically embedded into the coal pillar dam body and the surrounding rock, so that the artificial dam body is relatively large in stress and insufficient in stability, the connection part of the artificial dam body and the coal pillar, the connection part of the artificial dam body and the dam foundation and the sealing property and the seepage resistance of the artificial dam body are poor, and the requirements of high seepage resistance and safety reliability of the artificial dam body of the coal mine underground reservoir can not be met by the conventional artificial dam body and construction method of the artificial dam body. Therefore, a method for improving the sealing and seepage-proofing effects and safety and reliability of the artificial dam is urgently needed to solve the problems.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides an artificial dam body of an underground reservoir and a construction method thereof, wherein the water storage and water insulation functions of a dam foundation can be improved by paving the bottom of the dam foundation with water storage argil, and the dam foundation is prevented from seepage; the sealing performance of the joint of the dam body and the coal pillar can be improved by smearing and anchoring the groove joint with the waterproof gel.
In a first aspect, the invention provides a method for building an artificial dam body of an underground reservoir, which comprises the following steps:
step one, respectively forming a first groove and a second groove on reserved coal pillars on two sides of a dam foundation of the artificial dam body, wherein notches of the first groove and the second groove are opposite to each other;
secondly, excavating a foundation trench on the dam foundation along the direction from the first groove to the second groove, wherein two ends of the foundation trench extend to the bottoms of the first groove and the second groove respectively and are communicated with the first groove and the second groove;
uniformly paving a certain amount of impounded clay in the foundation trench and tamping, and coating anti-hydrogel on the inner walls of the first groove and the second groove, the top wall of the goaf in the foundation trench and above the foundation trench;
fourthly, constructing the artificial dam body in the foundation trench along the direction from the first groove to the second groove, wherein the top of the artificial dam body is in contact with the top wall of the goaf.
In one embodiment, the step one further comprises: and determining the construction areas of the underground reservoir and the artificial dam body, wherein the construction areas meet the requirement of stable geological structure and have no fracture, fault and staggered layer geological structure.
In one embodiment, step three further includes: and curing the waterproof gel. Through the embodiment, the anti-seepage effect of the waterproof gel is optimal after the waterproof gel is cured.
In one embodiment, step four further comprises: and coating the surface of the water facing side of the artificial dam body with waterproof water. By the embodiment, the anti-water gel is coated on the surface of the artificial dam body, so that the water body can be prevented from corroding the artificial dam body.
In one embodiment, in step four, the artificial dam body is constructed to include:
the concrete layers are positioned at two ends of the artificial dam body and are constructed in the first groove and the second groove;
the clay layer is positioned in the middle of the artificial dam body;
the red brick layer is positioned between the clay layer and the concrete layer.
In one embodiment, a waterproof gel is applied between the concrete layer and the red brick layer, and between the red brick layer and the clay layer.
In one embodiment, the base groove is arc-shaped, the first groove and the second groove are both arc-shaped corresponding to the base groove, and the artificial dam body is an arch-shaped dam. By the implementation mode, the stress of the artificial dam body is decomposed by the arched structure, and the damage condition of the dam body under the action of dynamic load can be improved; meanwhile, the corresponding contact surface area is increased due to the arched shape, and the artificial dam body has better sealing property by matching with the waterproof gel and the water storage argil.
In a second aspect, the invention provides an artificial dam body of an underground reservoir, which is built by adopting the building method.
In one embodiment, the length ratio of the clay layer, the red brick layer and the concrete layer of the artificial dam body is 10: 3: 5.
in one embodiment, the clay layer has a length of 2 to 2.3 m.
The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.
Compared with the prior art, the artificial dam body of the underground reservoir and the construction method thereof provided by the invention at least have the following beneficial effects:
1. the underground reservoir is built on the basis of the goaf, the underground space resources of the mine are fully utilized to store water resources, the development and utilization rate of the underground space resources are improved, the safety of the reservoir is improved, the construction difficulty and the construction cost of the underground reservoir are greatly reduced, and the underground reservoir is economical and environment-friendly;
2. according to the artificial dam body construction method, the water storage and water insulation functions of the dam foundation can be improved by paving the water storage argil at the bottom of the dam foundation, and seepage of the dam foundation is prevented; the sealing performance of the joint of the dam body and the coal pillar can be improved by smearing and anchoring the groove joint with the waterproof gel; and the erosion of the artificial dam body by mine water is prevented by using the waterproof gel on the inner surface of the artificial dam body. Meanwhile, the artificial dam body is further designed into an arch shape, so that the stress of the artificial dam body is decomposed, and the damage condition of the dam body under the action of dynamic load can be improved; and because the contact surface is enlarged due to the arched shape, and the artificial dam body has better sealing property by matching with the use of the waterproof gel and the water storage argil.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
FIG. 1 shows a schematic structural diagram of a dam foundation and a reserved coal pillar corresponding to an artificial dam body of the invention;
FIG. 2 is a schematic structural view showing a reservoir clay laid in a foundation trench of an artificial dam foundation according to the present invention;
FIG. 3 is a schematic structural diagram of one side of the concave surface of the artificial dam body of the invention;
FIG. 4 is a schematic structural diagram of the outer convex surface side of the artificial dam of the present invention;
fig. 5 shows a structural diagram of a multilayer structure inside the artificial dam body of the invention.
In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Reference numerals:
1-dam foundation, 11-foundation trench, 2-reserved coal pillar, 21-first groove, 22-second groove, 3-impoundment pottery clay, 4-artificial dam body, 41-concrete layer, 42-red brick layer, 43-clay layer and 5-waterproof gel.
Detailed Description
The invention will be further explained with reference to the drawings.
Example one
The embodiment provides a method for building an artificial dam body of an underground reservoir, which comprises the following steps:
step one, determining a construction area of the underground reservoir and the artificial dam body 4, wherein the construction area meets the requirement of stable geological structure and has no fracture, fault and staggered layer geological structure;
A first groove 21 and a second groove 22 are respectively formed in the reserved coal pillars 2 on two sides of the dam foundation 1 of the artificial dam body 4, and notches of the first groove 21 and the second groove 22 are opposite to each other.
Specifically, the underground reservoir is built on the basis of the goaf, underground space resources of a mine are fully utilized, the development and utilization rate of the underground space resources are improved, the safety of the reservoir is improved, the construction difficulty and the construction cost of the underground reservoir are greatly reduced, and the underground reservoir has remarkable economic benefit and environmental protection. After the construction areas of the underground reservoir and the artificial dam 4 in the goaf are determined, a dam foundation 1 for forming the artificial dam 4 is excavated at the corresponding position, as shown in the attached figure 1. Reserved pillars 2 serving as an underground reservoir pillar dam body are arranged on two sides of the dam foundation 1, a first groove 21 and a second groove 22 are respectively formed in the surfaces, corresponding to each other, of the reserved pillars 2 on the two sides, and notches of the first groove 21 and notches of the second groove 22 are opposite to each other. The height of the first groove 21 and the second groove 22 in the vertical direction is the same as the height of the reserved coal pillar 2, and the bottoms of the first groove 21 and the second groove 22 are flush with the upper surface of the dam foundation 1.
And step two, excavating a foundation trench 11 on the dam foundation 1 along the direction from the first trench 21 to the second trench 22, wherein two ends of the foundation trench 11 respectively extend to the bottoms of the first trench 21 and the second trench 22 and are communicated with the first trench 21 and the second trench 22.
Specifically, as shown in fig. 1 of the drawings, two ends of a foundation trench 11 dug in the dam foundation 1 extend to the bottoms of the first trench 21 and the second trench 22 respectively and are communicated with the first trench 21 and the second trench 22 into a whole, and the bottom of the foundation trench 11 serves as the wall surface of the bottoms of the first trench 21 and the second trench 22.
Step three, uniformly paving and tamping a certain amount of impounded clay 3 in the foundation trench 11, and coating waterproof gel 5 on the inner walls of the first groove 21 and the second groove 22, in the foundation trench 11 and on the top wall of the goaf above the foundation trench 11; the waterproof gel 5 is cured.
Specifically, as shown in fig. 2, after the excavation of the foundation trench 11 is finished, a layer of impounded clay 3 is uniformly paved and tamped in the foundation trench 11, and the paving amount of the impounded clay 3 is controlled, so that the tamped impounded clay 3 just fills the foundation trench 11; the water storage argil 3 can improve the water storage and water insulation functions of the dam foundation 1 and prevent the seepage of the dam foundation 1. And then the corresponding wall surface is coated with waterproof gel 5 to realize the waterproof of the contact surface. The waterproof gel 5 in the foundation trench 11 is smeared on the upper surface of the tamped impounded clay 3. And after the waterproof gel 5 is coated, maintaining, and building the artificial dam body 4 after maintaining the waterproof gel 5 on the surface layer.
Fourthly, constructing an artificial dam body 4 in the foundation trench 11 along the direction from the first groove 21 to the second groove 22, enabling the top of the artificial dam body 4 to be in contact with the top wall of the goaf, and coating waterproof gel 5 on the surface of the water facing side of the artificial dam body 4; the artificial dam body 4 is constructed to include:
the concrete layers 41 are positioned at two ends of the artificial dam body 4 and are constructed in the first groove 21 and the second groove 22;
the clay layer 43, the clay layer 43 is positioned in the middle of the artificial dam body 4;
Specifically, as shown in fig. 3 to fig. 5 of the accompanying drawings, the artificial dam 4 is constructed along the direction of the foundation trench 11, two concrete layers 41 located in the first groove 21 and the second groove 22 are respectively arranged at two ends of the artificial dam 4, a clay layer 43 is arranged in the middle of the artificial dam 4, and a red brick layer 42 is respectively arranged between the clay layer 43 and the concrete layers 41 at two sides. The concrete layer 41 has a larger contact area with the first groove 21 and the second groove 22, so that stable connection is realized, and the artificial dam body 4 and the reserved coal pillars 2 are further connected. The multi-layer structure formed by the concrete layer 41, the clay layer 43 and the red brick layer 42 can obviously improve the stability and the safety of the structure of the artificial dam body 4.
Meanwhile, the surface of the water-facing side of the artificial dam body 4 is coated with the waterproof gel 5, so that the water body can be prevented from corroding the artificial dam body 4. Preferably, the waterproof gel 5 is coated on the two side surfaces of the surface of the artificial dam 4 to enhance the corrosion resistance of the artificial dam 4.
Preferably, in the fourth step, when the artificial dam 4 is constructed, the waterproof gel 5 is coated between the concrete layer 41 and the red brick layer 42, and between the red brick layer 42 and the clay layer 43, so as to enhance the sealing performance of the artificial dam 4.
Preferably, in the second step, when the foundation trench 11 is excavated, the foundation trench 11 is excavated into an arc shape, and the first groove 21 and the second groove 22 are both arc shapes corresponding to the foundation trench 11, so that when the artificial dam 4 is constructed, the artificial dam 4 is constructed into an arch dam along the foundation trench 11.
Specifically, as shown in fig. 3 and 4 of the attached drawings, the artificial dam body 4 is an arch dam. The dam body of current underground reservoir is mostly regular plane upright structure, the dam body of this kind of structure is destroyed because of the atress is inhomogeneous easily, consequently for improving the atress condition of artifical dam body 4, it is the arch to design artifical dam body 4, arch structure's artifical dam body 4 can make the atress of artifical dam body 4 more even, reduce because of the too big risk that leads to artifical dam body 4 to be destroyed of local atress, the life of artifical dam body 4 has been prolonged, the structural stability and the security of underground reservoir have been improved.
And step five, maintaining the artificial dam body 4, and putting the artificial dam body 4 into use after maintenance.
Specifically, the clay layer 43, the red brick layer 42 and the concrete layer 41 of the artificial dam body 4 are respectively maintained according to corresponding construction standards, and are put into use after being maintained for a specified time. In addition, considering that the curing time of the waterproof gel 5 and the impounded clay 3 with different specifications is different, after the artificial dam body 4 is built, the waterproof gel is cured for a specified time and put into use according to the building construction standard by referring to the specifications of the impounded clay 3 and the waterproof gel 5.
Example two
The embodiment provides an artificial dam body 4 of an underground reservoir, which is built by adopting the building method in the first embodiment.
Specifically, as shown in fig. 3 to 5 of the accompanying drawings, the artificial dam 4 constructed by the construction method in the first embodiment is located between the reserved coal pillars 2 on both sides. The height of the artificial dam body 4 is equal to the distance from the dam foundation 1 to the top wall of the goaf, and the length of the artificial dam body 4 is related to the structure of the artificial dam body 4 and the distance between the first groove 21 and the second groove 22. If the artificial dam body 4 is of an arch structure, the length of the artificial dam body 4 is equal to the arc length between the first groove 21 and the second groove 22; if the artificial dam 4 is a plane vertical structure, the length of the artificial dam 4 is equal to the maximum linear distance between the first groove 21 and the second groove 22.
Further, the length ratio of the clay layer 43, the red brick layer 42 and the concrete layer 41 of the artificial dam body 4 is 10: 3: 5; the length of the clay layer 43 is 2 to 2.3 m.
Specifically, considering that the difference of the stress conditions of different positions of the artificial dam body 4 in the process of storing and discharging water in the reservoir exists, the lengths of the clay layer 43, the concrete layer 41 and the red brick layer 42 are sequentially reduced, and preferably, the length ratio of the clay layer 43 to the red brick layer 42 to the concrete layer 41 is 10: 3: 5, the length of the clay layer 43 is preferably 2 to 2.3 m. Between clay layer 43 and red brick layer 42, all paint waterproof gel 5 between red brick layer 42 and the concrete layer 41 to after painting waterproof gel 5, need carry out the maintenance earlier, build next floor again, guarantee the fastening nature of connecting before each layer structure in the artificial dam body 4, promote the antiseep effect. The artificial dam body 4 with the structure has higher impact strength and is more stable; especially for the artificial dam body 4 with the arch structure, the stress is more uniform, the probability that the artificial dam body 4 is damaged due to uneven stress is greatly reduced, the service life of the artificial dam body 4 is further prolonged, and the structural stability and the safety of the underground reservoir are improved.
In addition, the thickness of the artificial dam body 4 can be adjusted according to the reservoir capacity of the reservoir, the geological conditions of a mine and the like, and if the designed reservoir capacity is large or the geological conditions are poor, the thickness of the artificial dam body 4 can be properly increased; if the designed reservoir capacity is small or the geological conditions are good, the thickness of the artificial dam body 4 can be properly reduced.
In one embodiment, the underground reservoir can be built in a mine roadway besides the goaf, and the reservoir built in the mine roadway is formed by plugging two artificial dam bodies 4 at two ends of the mine roadway. Specifically, the storage capacity of the reservoir is designed according to the geological conditions of the mine roadway, and the storage capacity V of the single reservoir of the reservoir is equal to the product of the length L of the reservoir body and the area S of the roadway section. The single reservoirs can be communicated to form a reservoir group, the single reservoirs are communicated through a pipeline provided with a gate, and the total storage capacity of the reservoir group is the sum of the storage capacities of the single reservoirs.
In addition, in order to improve the structural stability of the reservoir, the surrounding rock of the mine roadway is reinforced before the artificial dam body 4 is built, and because the supporting is carried out in the roadway tunneling process in the modes of anchor rod supporting, anchor rope supporting, sprayed concrete supporting and the like, the supporting strength is high, the whole body does not need to be reinforced, the position with lower supporting strength is reinforced, the structure of the reservoir body is more stable, and the structural stability of the reservoir can be ensured.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that various dependent claims and the features described herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A construction method of an artificial dam body of an underground reservoir is characterized by comprising the following steps:
step one, respectively forming a first groove and a second groove on reserved coal pillars on two sides of a dam foundation of the artificial dam body, wherein notches of the first groove and the second groove are opposite to each other;
step two, excavating a foundation trench on the dam foundation along the direction from the first groove to the second groove, wherein two ends of the foundation trench extend to the bottoms of the first groove and the second groove respectively and are communicated with the first groove and the second groove;
Uniformly paving a certain amount of impounded clay in the foundation trench and tamping, and coating anti-hydrogel on the inner walls of the first groove and the second groove, the top wall of the goaf in the foundation trench and above the foundation trench;
fourthly, constructing the artificial dam body in the foundation trench along the direction from the first groove to the second groove, wherein the top of the artificial dam body is in contact with the top wall of the goaf.
2. The method for constructing an artificial dam body for an underground reservoir as claimed in claim 1, wherein in the first step, the method further comprises:
and determining the built areas of the underground reservoir and the artificial dam body, wherein the built areas meet the requirement of stable geological structure and do not have fracture, fault and staggered-layer geological structure.
3. The method for constructing an artificial dam body for an underground reservoir as claimed in claim 1, wherein in the third step, the method further comprises: and curing the waterproof gel.
4. The method for constructing an artificial dam body for an underground reservoir as claimed in claim 1, wherein in the fourth step, the method further comprises: and coating the surface of the water facing side of the artificial dam body with waterproof water.
5. The method for constructing an artificial dam for an underground reservoir as claimed in claim 1 or 4, wherein in the fourth step, the artificial dam is constructed to include:
The concrete layers are positioned at two ends of the artificial dam body and are constructed in the first groove and the second groove;
the clay layer is positioned in the middle of the artificial dam body;
the red brick layer is positioned between the clay layer and the concrete layer.
6. The method for constructing an artificial dam for an underground reservoir as claimed in claim 5, wherein a waterproof gel is applied between said concrete layer and said red brick layer, and between said red brick layer and said clay layer.
7. The method of constructing an artificial dam for an underground reservoir as claimed in claim 1, wherein said foundation trench is arc-shaped, said first and second recesses are both arc-shaped corresponding to said foundation trench, and said artificial dam is an arch-shaped dam.
8. An artificial dam for an underground reservoir, constructed by the method as claimed in any one of claims 1 to 7.
9. The artificial dam for an underground reservoir as claimed in claim 8, wherein the length ratio of the clay layer, the red brick layer and the concrete layer of the artificial dam is 10: 3: 5.
10. the artificial dam body for an underground reservoir according to claim 9, wherein the clay layer has a length of 2 to 2.3 m.
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| CN114763695B (en) | 2024-04-26 |
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