CN115110995A - Underground cave depot sealing structure and construction method thereof - Google Patents
Underground cave depot sealing structure and construction method thereof Download PDFInfo
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- CN115110995A CN115110995A CN202210664239.3A CN202210664239A CN115110995A CN 115110995 A CN115110995 A CN 115110995A CN 202210664239 A CN202210664239 A CN 202210664239A CN 115110995 A CN115110995 A CN 115110995A
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- 238000007789 sealing Methods 0.000 title claims abstract description 155
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 144
- 239000010959 steel Substances 0.000 claims abstract description 144
- 239000011435 rock Substances 0.000 claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000007569 slipcasting Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 12
- 229920002748 Basalt fiber Polymers 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 210000001503 joint Anatomy 0.000 description 8
- 239000011440 grout Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/05—Lining with building materials using compressible insertions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides an underground cave depot sealing structure and a construction method thereof, belonging to the technical field of novel energy. This underground cave storehouse sets up in original stratum rock mass (1), underground cave storehouse seal structure outside-in is including slip casting layer (2), lining layer (3), inboard reinforcing bar (4), buffer layer (5) and steel sealing layer (6) nested in proper order, slip casting layer (2), lining layer (3), inboard reinforcing bar (4), buffer layer (5) and steel sealing layer (6) centering. The construction method comprises the following steps: digging a containing space in an original stratum rock mass (1); and forming the underground cave depot sealing structure in the accommodating space. The sealing performance of the underground cave depot can be ensured, and the safety and the reliability are realized.
Description
Technical Field
The invention relates to the technical field of novel energy, in particular to an underground cave depot sealing structure and a construction method thereof.
Background
In the energy field, new energy represented by solar energy, wind energy, tidal energy and the like will dominate the energy supply in the future in order to meet the requirements of ecological civilization construction. However, the new energy generally has intermittency, uncertainty and instability of supply, and becomes a key problem which needs to be solved urgently in future large-scale development and application of the new energy. In order to solve the problems, compressed air energy storage technology is developed. The compressed air energy storage means that when the energy supply is sufficient, surplus wind power, water power, photoelectricity and the like are converted into the internal energy of air by using an air compressor and stored, when the energy supply is insufficient, the stored compression heat is absorbed by devices such as a heat storage device and a heat exchanger to be heated, the work is done by a turbine expander to drive a generator to generate electricity, the stored internal energy is converted into the electric energy, and the peak regulation effect is achieved. The gas storage structure of the compressed gas energy storage power station is mainly divided into an above-ground structure and an underground structure at present, and the underground gas storage structure becomes the mainstream at present due to the consideration of cost and safety. The manually excavated underground sealed underground warehouse is one kind of underground gas storage structure, and may be used widely in the fields of flexible site selection, low cost, etc. and its sealing structure and construction method are key technology in compressed air energy storing power station.
Disclosure of Invention
In view of this, the invention provides a sealing structure of an underground warehouse and a construction method thereof, which can ensure the sealing performance of the underground warehouse, and is safe and reliable, thereby being more practical.
In order to achieve the first object, the technical scheme of the underground cave depot sealing structure provided by the invention is as follows:
the invention provides an underground cave depot sealing structure which is arranged in an original stratum rock body (1), and comprises a grouting layer (2), a lining layer (3), an inner steel bar (4), a buffer layer (5) and a steel sealing layer (6) which are sequentially nested from outside to inside, wherein the grouting layer (2), the lining layer (3), the inner steel bar (4), the buffer layer (5) and the steel sealing layer (6) are centered.
The underground cave depot sealing structure provided by the invention can be further realized by adopting the following technical measures.
Preferably, the underground cave depot sealing structure further comprises a buffer block (7), two butt joint end faces of the steel sealing layer (6) are formed by splicing, and the buffer block (7) is arranged between the two butt joint end faces of the steel sealing layer (6).
Preferably, the underground cave depot sealing structure also comprises a splicing piece (8),
one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6), and one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6);
the width of the splicing piece (8) is larger than the distance between the two butted end faces of the steel sealing layer (6), so that the splicing piece (8) forms a bulge between the two butted end faces of the steel sealing layer (6).
As a preference, the first and second liquid crystal compositions are,
loose surrounding rocks (9) are formed between a grouting layer (2) of the underground cavern and the original stratum rock mass (1), and loose surrounding rocks (10) are intermittently formed in the radial direction on the portions, close to the grouting layer (2), of the loose surrounding rocks (9);
the slurry for forming the grouting layer (2) is filled in the loosening ring crack (10).
Preferably, the cushioning layer (5) is made of rubber.
Preferably, the lining layer (3) is made of steel fiber and/or reinforced concrete.
In order to achieve the second object, the technical scheme of the construction method of the underground warehouse sealing structure provided by the invention is as follows:
the construction method of the underground cave depot sealing structure provided by the invention comprises the following steps:
digging a containing space in an original stratum rock mass (1);
the underground cave depot sealing structure is formed in the accommodating space and comprises a grouting layer (2), a lining layer (3), inner steel bars (4), a buffer layer (5) and a steel sealing layer (6) which are sequentially nested from outside to inside, wherein the grouting layer (2), the lining layer (3), the inner steel bars (4), the buffer layer (5) and the steel sealing layer (6) are centered.
The construction method of the underground cave depot sealing structure provided by the invention can be further realized by adopting the following technical measures.
Preferably, the underground cave storehouse sealing structure is formed in the accommodating space, and comprises a grouting layer (2), a lining layer (3), inner steel bars (4), a buffer layer (5) and a steel sealing layer (6) which are sequentially nested from outside to inside, wherein the grouting layer (2), the lining layer (3), the inner steel bars (4), the buffer layer (5) and the steel sealing layer (6) are centered and specifically comprise the following steps:
in the accommodating space, performing anchor spraying and reinforcing a weak stratum to form the grouting layer (2), so that the grouting layer (2) supports the inner side of the accommodating space;
steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer (2), and after the trolley is cast on site, the lining layer (3) and the inner steel bars (4) are formed on the inner side of the grouting layer (2);
and sequentially arranging the buffer layer (5) and the steel sealing layer (6) on the inner side of the inner steel bar (4) to obtain the underground cave depot sealing structure.
Preferably, loose surrounding rock (9) is formed between the grouting layer (2) of the underground cavern and the original stratum rock body (1), loose surrounding rock (9) intermittently forms loose ring cracks (10) in the radial direction at the position close to the grouting layer (2),
steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer (2), after the site trolley is poured, the lining layer (3) and the inner steel bars (4) are formed on the inner side of the grouting layer (2), and the buffer layer (5) and the steel sealing layer (6) are sequentially arranged on the inner side of the inner steel bars (4), so that the underground cave depot sealing structure is obtained, and the underground cave depot sealing structure further comprises the following steps:
grouting the loose surrounding rock (9) to ensure that the loose ring cracks (10) are filled with slurry for forming the grouting layer (2).
Preferably, in the step of adding steel fibers or basalt fibers into the concrete on the inner side of the grouting layer (2), forming the lining layer (3) and the inner steel bars (4) on the inner side of the grouting layer (2) after pouring by a field trolley, and the step of sequentially arranging the buffer layer (5) and the steel sealing layer (6) on the inner side of the inner steel bars (4) to obtain the underground cave depot sealing structure, the method further comprises the following steps:
the two butt joint end faces of the steel sealing layer (6) are formed by splicing, and the buffer block (7) is arranged between the two butt joint end faces of the steel sealing layer (6).
Preferably, the two butt end faces of the steel sealing layer (6) are formed by splicing, and after the step of arranging the buffer block (7) between the two butt end faces of the steel sealing layer (6) is completed, the method further comprises the following steps:
a splicing piece (8) is arranged between the two butted end surfaces of the steel sealing layer (6), one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6), and one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6);
the width of the splicing piece (8) is larger than the distance between the two butted end faces of the steel sealing layer (6), so that the splicing piece (8) forms a bulge between the two butted end faces of the steel sealing layer (6).
The invention provides a sealing structure of an underground cave depot and a construction method thereof, wherein the sealing structure comprises a grouting layer 2, a lining layer 3, an inner steel bar 4, a buffer layer 5 and a steel sealing layer 6 which are sequentially nested from outside to inside, and the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are aligned. On the basis, high-pressure gas in the underground cave can be limited by the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 layer by layer, and the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are mutually restrained and cooperated, so that the sealing performance of the underground cave can be ensured, and the underground cave is safe and reliable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is an overall structural schematic diagram of a sealing structure of an underground warehouse according to an embodiment of the present invention;
FIG. 2 is a partially enlarged schematic view of portion A of FIG. 1;
fig. 3 is a schematic view of a partial structure of a relationship between a junction and a buffer block, the junction being related to the underground cavern sealing structure provided by the embodiment of the invention;
fig. 4 is a schematic partial structure diagram of a relationship between a buffer block related to the underground warehouse sealing structure and an overall structure of the underground warehouse sealing structure provided by the embodiment of the invention;
fig. 5 is a schematic view of a partial structure of a relationship between loose-circle surrounding rock and loose-circle cracks related to the underground cave depot sealing structure provided by the embodiment of the invention:
fig. 6 is a flow chart of steps of a construction method of a sealing structure of an underground warehouse according to an embodiment of the present invention.
Description of reference numerals:
1: original stratum rock mass, 2-grouting layer, 3: lining course, 4: inner steel bar, 5: buffer layer, 6: steel seal layer, 7: buffer block, 8: splice, 9: loosening surrounding rock, 10: loosening the ring crack.
Detailed Description
In view of this, the invention provides an underground cave depot sealing structure and a construction method thereof, which can ensure the sealing performance of the underground cave depot and is safe and reliable, thereby being more practical.
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description will be given to the specific implementation, structure, features and effects of the underground cave depot sealing structure and the construction method thereof according to the present invention with reference to the accompanying drawings and the preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be contained, a may be present alone, or B may be present alone, and any of the three cases described above may be provided.
Underground cave storehouse seal structure embodiment
The invention provides a sealing structure of an underground cave depot, wherein the underground cave depot is arranged in an original stratum rock mass 1, the sealing structure of the underground cave depot comprises a grouting layer 2, a lining layer 3, an inner steel bar 4, a buffer layer 5 and a steel sealing layer 6 which are sequentially nested from outside to inside, and the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are centered.
The invention provides a sealing structure of an underground cave depot, which comprises a grouting layer 2, a lining layer 3, an inner steel bar 4, a buffer layer 5 and a steel sealing layer 6 which are sequentially nested from outside to inside, wherein the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are aligned. On the basis, high-pressure gas in the underground cave can be limited by the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 layer by layer, and the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are mutually restrained and cooperated, so that the sealing performance of the underground cave can be ensured, and the underground cave is safe and reliable.
The underground cave depot sealing structure further comprises a buffer block 7, two butt joint end faces of the steel sealing layer 6 are formed by splicing, and the buffer block 7 is arranged between the two butt joint end faces of the steel sealing layer 6. Under the condition, even if the gas pressure in the underground cave changes, the containing space of the underground cave for the gas can also change along with the change of the buffer block 7, thereby relieving the influence caused by the increase and decrease of the gas pressure in the underground cave and improving the safety of the underground cave.
The underground cave depot sealing structure further comprises a splicing piece 8. One end of the splice 8 is fixedly connected to one of the two butt-joint end faces of the steel sealing layer 6, and one end of the splice 8 is fixedly connected to one of the two butt-joint end faces of the steel sealing layer 6. The width of the splice 8 is greater than the spacing between the two abutting end faces of the steel sealing layer 6, so that the splice 8 forms a protrusion between the two abutting end faces of the steel sealing layer 6. Under the condition, even if the gas pressure of the containing space in the underground cavern is increased to cause the increase of the needed containing space, the splicing piece 8 can increase the volume of the internal containing space of the underground cavern in a mode of enlarging the perimeter, so that the potential safety hazard caused by the increase of the internal pressure of the underground cavern can be relieved, and the safety of the sealing structure of the underground cavern is further improved.
A loose ring surrounding rock 9 is formed between a grouting layer 2 of the underground cave and an original stratum rock body 1, and a loose ring crack 10 is intermittently formed on the loose ring surrounding rock 9 in the radial direction at a position close to the grouting layer 2. The grout forming the grout layer 2 is filled in the loosening ring crack 10. Under the condition, the grout filled in the loose ring cracks 10 can fill the loose ring cracks 10, and the loose ring cracks 10 are adhered when the grout plays a role in essence, so that the problem of reduced bearing capacity of the loose ring surrounding rock 9 caused by the gas pressure in the underground warehouse is solved.
Wherein the cushioning layer 5 is made of rubber. Under the condition, the rubber has certain tensile property, even if the accommodating space in the underground cave has the tendency of expanding the steel sealing layer 6 under the gas pressure in the underground cave, the buffer layer 5 belongs to flexible sealing under the condition of having the tensile property, and the risk of underground cave leakage caused by the increase of the gas pressure in the underground cave can be further relieved. In this embodiment, an annular gap is formed between the buffer layer 5 and the inner steel bar 4, and in this case, even if the buffer layer 5 is stretched, a movable space can be formed in the annular gap, so that the underground chamber has a wider application range.
Wherein the lining layer 3 is made of steel fiber and/or reinforced concrete. In the embodiment, the strength of the inner side of the lining layer 3 is greater than that of the outer side of the lining layer, so that the construction requirement can be met, and the construction cost of the underground cave dwelling can be saved.
Construction method embodiment of underground cave depot sealing structure
The construction method of the underground cave depot sealing structure provided by the invention comprises the following steps:
step S1: digging a containing space in the original stratum rock mass 1;
step S2: and forming an underground cave depot sealing structure in the accommodating space, wherein the underground cave depot sealing structure comprises a grouting layer 2, a lining layer 3, an inner reinforcing steel bar 4, a buffer layer 5 and a steel sealing layer 6 which are sequentially nested from outside to inside, and the grouting layer 2, the lining layer 3, the inner reinforcing steel bar 4, the buffer layer 5 and the steel sealing layer 6 are centered.
The invention provides a sealing structure of an underground cave depot, which comprises a grouting layer 2, a lining layer 3, an inner steel bar 4, a buffer layer 5 and a steel sealing layer 6 which are sequentially nested from outside to inside, wherein the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are aligned. On the basis, high-pressure gas in the underground cave can be limited by the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 layer by layer, and the grouting layer 2, the lining layer 3, the inner steel bar 4, the buffer layer 5 and the steel sealing layer 6 are mutually restrained and cooperated, so that the sealing performance of the underground cave can be ensured, and the underground cave is safe and reliable.
Wherein, form underground cave storehouse seal structure in the accommodation space, underground cave storehouse seal structure outside-in is including the slip casting layer 2, the lining layer 3, inboard reinforcing bar 4, buffer layer 5 and the steel sealing layer 6 nested in proper order, and slip casting layer 2, lining layer 3, inboard reinforcing bar 4, buffer layer 5 and the 6 centering of steel sealing layer specifically include following steps:
step S201: in the accommodating space, performing anchor spraying and reinforcing a weak stratum to form a grouting layer 2, so that the grouting layer 2 supports the inner side of the accommodating space;
step S202: steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer 2, and after the site trolley is poured, a lining layer 3 and inner steel bars 4 are formed on the inner side of the grouting layer 2;
step S203: and sequentially arranging a buffer layer 5 and a steel sealing layer 6 on the inner side of the inner steel bar 4 to obtain the underground warehouse sealing structure.
A loose ring surrounding rock 9 is formed between a grouting layer 2 of the underground cave and an original stratum rock body 1, and a loose ring crack 10 is intermittently formed on the loose ring surrounding rock 9 in the radial direction at a position close to the grouting layer 2. Steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer 2, after the site trolley is poured, a lining layer 3 and inner steel bars 4 are formed on the inner side of the grouting layer 2, a buffer layer 5 and a steel sealing layer 6 are sequentially arranged on the inner side of the inner steel bars 4, and the underground cave depot sealing structure is obtained, and the underground cave depot sealing structure further comprises the following steps: grouting the loose surrounding rock 9 to fill the gaps 10 of the loose ring with slurry for forming the grouting layer 2. Under the condition, the grout filled in the loose ring cracks 10 can fill the loose ring cracks 10, and the loose ring cracks 10 are adhered when the grout plays a role in essence, so that the problem of reduced bearing capacity of the loose ring surrounding rock 9 caused by the gas pressure in the underground warehouse is solved.
The method comprises the steps of mixing steel fibers or basalt fibers into the concrete on the inner side of a grouting layer 2, forming a lining layer 3 and an inner steel bar 4 on the inner side of the grouting layer 2 after a field trolley is poured, and sequentially arranging a buffer layer 5 and a steel sealing layer 6 on the inner side of the inner steel bar 4 to obtain the underground cave depot sealing structure, wherein the method further comprises the following steps: the two butt end faces of the steel sealing layer 6 are formed by splicing, and a buffer block 7 is arranged between the two butt end faces of the steel sealing layer 6. Under the condition, even if the gas pressure in the underground cave changes, the containing space of the underground cave for the gas can also change along with the change of the buffer block 7, thereby relieving the influence caused by the increase and decrease of the gas pressure in the underground cave and improving the safety of the underground cave.
Wherein, two butt joint terminal surfaces of steel sealing layer 6 are formed through the concatenation, set up the back in the step completion of buffer block 7 between two butt joint terminal surfaces of steel sealing layer 6, still include the following step:
a splicing piece 8 is arranged between the two butted end surfaces of the steel sealing layer 6, one end of the splicing piece 8 is fixedly connected to one of the two butted end surfaces of the steel sealing layer 6, and one end of the splicing piece 8 is fixedly connected to one of the two butted end surfaces of the steel sealing layer 6;
the width of the splice 8 is greater than the spacing between the two abutting end faces of the steel sealing layer 6, so that the splice 8 forms a protrusion between the two abutting end faces of the steel sealing layer 6.
Under the condition, even if the gas pressure of the containing space in the underground cavern is increased to cause the increase of the needed containing space, the splicing piece 8 can increase the volume of the internal containing space of the underground cavern in a mode of enlarging the perimeter, so that the potential safety hazard caused by the increase of the internal pressure of the underground cavern can be relieved, and the safety of the sealing structure of the underground cavern is further improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides an underground cave storehouse seal structure, underground cave storehouse sets up in original stratum rock mass (1), its characterized in that, underground cave storehouse seal structure outside-in is including slip casting layer (2), lining layer (3), inboard reinforcing bar (4), buffer layer (5) and steel sealing layer (6) nested in proper order, slip casting layer (2), lining layer (3), inboard reinforcing bar (4), buffer layer (5) and steel sealing layer (6) centering.
2. The underground cavern sealing structure as claimed in claim 1, further comprising a buffer block (7), wherein the two abutting end faces of the steel seal layer (6) are formed by splicing, and the buffer block (7) is disposed between the two abutting end faces of the steel seal layer (6).
3. The underground cavern sealing structure of claim 2, further comprising splices (8),
one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6), and one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6);
the width of the splicing piece (8) is larger than the distance between the two butted end faces of the steel sealing layer (6), so that the splicing piece (8) forms a bulge between the two butted end faces of the steel sealing layer (6).
4. The underground cavern sealing structure as claimed in claim 1,
loose surrounding rocks (9) are formed between a grouting layer (2) of the underground cavern and the original stratum rock mass (1), and loose surrounding rocks (10) are intermittently formed in the radial direction on the portions, close to the grouting layer (2), of the loose surrounding rocks (9);
the slurry for forming the grouting layer (2) is filled in the loosening ring crack (10).
5. The underground cavern sealing structure of claim 1, characterized in that the buffer layer (5) is made of rubber.
6. A underground cavern sealing structure according to claim 1, characterized in that the lining layer (3) is made of steel fibers and/or reinforced concrete.
7. The construction method of the underground cave depot sealing structure as claimed in any one of claims 1 to 6, characterized by comprising the steps of:
digging a containing space in an original stratum rock mass (1);
the underground cave depot sealing structure is formed in the accommodating space and comprises a grouting layer (2), a lining layer (3), inner steel bars (4), a buffer layer (5) and a steel sealing layer (6) which are sequentially nested from outside to inside, wherein the grouting layer (2), the lining layer (3), the inner steel bars (4), the buffer layer (5) and the steel sealing layer (6) are centered.
8. The construction method of the underground cave depot sealing structure according to claim 7, characterized in that, the underground cave depot sealing structure is formed in the accommodation space, the underground cave depot sealing structure comprises a grouting layer (2), a lining layer (3), an inner steel bar (4), a buffer layer (5) and a steel sealing layer (6) which are nested in sequence from outside to inside, and the centering of the grouting layer (2), the lining layer (3), the inner steel bar (4), the buffer layer (5) and the steel sealing layer (6) specifically comprises the following steps:
in the accommodating space, performing anchor spraying and weak stratum reinforcement to form the grouting layer (2), so that the grouting layer (2) supports the inner side of the accommodating space;
steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer (2), and after the trolley is cast on site, the lining layer (3) and the inner steel bars (4) are formed on the inner side of the grouting layer (2);
and sequentially arranging the buffer layer (5) and the steel sealing layer (6) on the inner side of the inner steel bar (4) to obtain the underground cave depot sealing structure.
9. The construction method of the underground cave sealing structure according to the claim 8, characterized in that the loose surrounding rock (9) is formed between the grouting layer (2) of the underground cave and the original stratum rock mass (1), the loose surrounding rock (9) forms the loose crack (10) intermittently in the radial direction near the grouting layer (2),
steel fibers or basalt fibers are doped into the concrete on the inner side of the grouting layer (2), after the site trolley is poured, the lining layer (3) and the inner steel bars (4) are formed on the inner side of the grouting layer (2), and the buffer layer (5) and the steel sealing layer (6) are sequentially arranged on the inner side of the inner steel bars (4), so that the underground cave depot sealing structure is obtained, and the underground cave depot sealing structure further comprises the following steps:
grouting the loose surrounding rock (9) to ensure that the loose ring cracks (10) are filled with slurry for forming the grouting layer (2).
10. The construction method of a sealing structure of an underground cave depot according to claim 8, characterized in that the step of forming the lining layer (3) and the inner steel bar (4) on the inner side of the grouting layer (2) after the concrete on the inner side of the grouting layer (2) is mixed with steel fiber or basalt fiber and the trolley is poured on site, and the step of sequentially arranging the buffer layer (5) and the steel sealing layer (6) on the inner side of the inner steel bar (4) to obtain the sealing structure of the underground cave depot further comprises the following steps:
the two butt-joint end faces of the steel sealing layer (6) are formed by splicing, and the buffer block (7) is arranged between the two butt-joint end faces of the steel sealing layer (6);
preferably, the two butt end faces of the steel sealing layer (6) are formed by splicing, and after the step of arranging the buffer block (7) between the two butt end faces of the steel sealing layer (6) is completed, the method further comprises the following steps:
a splicing piece (8) is arranged between the two butted end surfaces of the steel sealing layer (6), one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6), and one end of the splicing piece (8) is fixedly connected to one of the two butted end surfaces of the steel sealing layer (6);
the width of the splicing piece (8) is larger than the distance between the two butted end faces of the steel sealing layer (6), so that the splicing piece (8) forms a bulge between the two butted end faces of the steel sealing layer (6).
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| CN117108358A (en) * | 2023-08-25 | 2023-11-24 | 中国矿业大学 | Underground gas storage cavern combined type drainage and gas leakage monitoring lining system |
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