CN112431615A - Permanent single-layer lining drainage method for underground tank room of hyperboloid dome - Google Patents
Permanent single-layer lining drainage method for underground tank room of hyperboloid dome Download PDFInfo
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- CN112431615A CN112431615A CN202011359583.9A CN202011359583A CN112431615A CN 112431615 A CN112431615 A CN 112431615A CN 202011359583 A CN202011359583 A CN 202011359583A CN 112431615 A CN112431615 A CN 112431615A
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- 239000002356 single layer Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 claims abstract description 83
- 239000010410 layer Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000005507 spraying Methods 0.000 claims abstract description 29
- 239000011378 shotcrete Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 7
- 239000011435 rock Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 14
- -1 polypropylene Polymers 0.000 claims description 14
- 229920001155 polypropylene Polymers 0.000 claims description 14
- 239000004568 cement Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000011863 silicon-based powder Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
Abstract
The invention provides a permanent single-layer lining drainage method for a hyperboloid dome underground tank room, which comprises the following steps of: cleaning the inner wall surfaces of dug hyperboloid dome and tank room rock mass, and spraying primary spraying concrete; uniformly distributing drainage plates on the hyperboloid dome and the primary sprayed concrete layer of the tank room along the contour line, arranging horizontal drainage plates on a bottom plate of the tank room, and enabling the drainage plates to be in lap joint communication to form a pipe network drainage system; thirdly, spraying impervious concrete on the initial spraying concrete layers or the drainage plates of the hyperboloid dome and the tank room to form a impervious concrete layer; and fourthly, arranging an annular drainage lateral ditch on the tank room bottom plate on the periphery of the impervious concrete layer along the circumferential direction, introducing seepage water into the annular drainage lateral ditch through a horizontal drainage plate on the bottom plate, and then discharging. The drainage method improves the integral drainage performance of the permanent single-layer lining, and has the advantages of simple construction, economy, reasonableness and higher practicability and applicability.
Description
Technical Field
The invention belongs to the technical field of drainage construction of underground structures, and particularly relates to a permanent single-layer lining drainage method for an underground tank room of a hyperboloid dome.
Background
Along with the construction and development of underground engineering, more and more attention is paid to economic and environment-friendly engineering design and construction technology, and compared with the traditional composite lining, the spray-anchored permanent single-layer lining is a more economic and reasonably stressed supporting type and has a large development space.
The permanent single-layer lining structure is usually considered according to impermeability, and in areas where underground water is relatively developed, the lining generally bears relatively high external water pressure, and when the area with weak lining quality is encountered, water leakage can be caused, and even the problems of lining shedding, block falling and the like are caused under the long-term action.
Therefore, for underground tank rooms with abundant ground water, a permanent single-layer lining combined with drainage design is necessary.
Disclosure of Invention
The invention aims to provide a drainage method for a permanent single-layer lining of a hyperboloid dome underground tank room, which at least solves the problem that a lining falls off and blocks are dropped due to the fact that a permanent single-layer lining structure in a relatively-developing area of underground water easily causes water seepage.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method of permanent single-layer lining drainage of a hyperboloid dome underground tank room, the method comprising the steps of:
cleaning the inner wall surfaces of an excavated hyperboloid dome and a tank room rock mass, and spraying primary sprayed concrete to form a primary sprayed concrete layer;
uniformly arranging drainage plates on the initial spraying concrete layers of the hyperboloid dome and the tank room along the contour lines, arranging horizontal drainage plates on a bottom plate of the tank room, and connecting a plurality of drainage plates in a lap joint manner to form a pipe network drainage system, wherein the drainage plates are fixed on the initial spraying concrete;
thirdly, spraying impervious concrete on the initial spraying concrete layers or the drainage plates of the hyperboloid dome and the tank room to form a impervious concrete layer;
and fourthly, arranging an annular drainage lateral ditch on a tank room bottom plate on the periphery of the impervious concrete layer along the circumferential direction, leading the water seepage in a pipe network drainage system into the annular drainage lateral ditch through a longitudinal drainage plate on the tank room and a horizontal drainage plate on the bottom plate, and then discharging.
In the drainage method for the permanent single-layer lining of the hyperboloid dome underground tank room, preferably, the whole height of the drainage plate is 50mm, the thickness of the panel is 12mm, the width of the panel is 200mm, and the drainage plate is lapped in a tooth hole buckling mode during laying;
preferably, the drain board is a concave-convex type drain board.
In the permanent single-layer lining drainage method for the underground tank room with the double-curved-surface dome, preferably, longitudinal drainage plates and first circumferential drainage plates which are uniformly distributed are arranged in the tank room along the contour line, and the longitudinal drainage plates and the circumferential drainage plates are mutually vertical;
preferably, the distance between the longitudinal drainage plates and the distance between the first circumferential drainage plates are both 4-6 m.
In the drainage method for the permanent single-layer lining of the underground tank room with the double-curved-surface dome, preferably, a second annular drainage plate and a curved-surface drainage plate are arranged on the dome along the contour line, two tangent lines of the intersection point of the curved-surface drainage plate and the second annular drainage plate are perpendicular to each other, and two end parts of the curved-surface drainage plate are in lap joint communication with the longitudinal drainage plate in the tank room.
In the drainage method for the permanent single-layer lining of the hyperboloid dome underground tank room, preferably, the drainage plate is fixedly connected with the primary sprayed concrete through a shooting nail.
In the drainage method for the permanent single-layer lining of the underground tank room with the double-curved-surface dome, preferably, reinforced drainage plates are additionally arranged at water seepage points of the double-curved-surface dome and the inner wall of the tank room, and the reinforced drainage plates are in lap joint communication with the adjacent drainage plates.
In the permanent single-layer lining drainage method for the double-curved-surface dome underground tank room, preferably, a reinforcing mesh is erected in the impervious concrete layer;
preferably, the impervious concrete layer comprises a first layer of impervious concrete and a second layer of impervious concrete, and reinforcing meshes are erected in the first layer of impervious concrete and the second layer of impervious concrete.
In the drainage method for the permanent single-layer lining of the hyperboloid dome underground tank room, preferably, the impervious concrete comprises the following components in parts by mass:
10 parts of cement, 15-17 parts of coarse aggregate, 17-19 parts of fine aggregate, 4-5 parts of water, 0.1-0.3 part of water reducing agent, 0.7-0.9 part of accelerating agent, 0.4-0.6 part of silicon powder and 0.01-0.02 part of polypropylene fiber.
In the drainage method of the permanent single-layer lining of the hyperboloid dome underground tank room, preferably, the silicon powder is mixed with 5.2 percent of the mass of the cement, and the polypropylene fiber is mixed with 0.1875 percent of the mass of the cement.
In the method for draining water in the permanent single-layer lining of the double-curved-dome underground tank room, preferably, the impervious concrete is C30 concrete.
Compared with the closest prior art, the technical scheme provided by the invention has the following excellent effects:
1) the invention utilizes the communicated space formed at the bottom of the concave-convex drainage plate cup-shaped structure as the drainage channel, the arranged transverse circumferential drainage plate and the longitudinal drainage plate are mutually vertical, the tooth holes are buckled when the transverse circumferential drainage plate and the longitudinal drainage plate are crossed, and the underground water permeates into the transverse drainage plate and the longitudinal drainage plate and then is gathered in the circumferential drainage side ditch at the bottom plate, thereby reducing the external water pressure of the single-layer lining of the tank room.
2) The concave-convex drainage plate is fixed on the primary sprayed concrete through the jet nail, the whole drainage performance of the tunnel is improved on the basis of ensuring the advantage that the spray anchor single-layer lining and the surrounding rock are tightly laminated, and meanwhile, the construction is simple, economic and reasonable, and higher practicability and applicability are realized.
3) The C30 polypropylene fiber concrete is doped with a proper amount of silicon powder, so that the compactness of the concrete slurry structure is improved, the concrete pore structure is improved, and the impermeability of the outer layer concrete is improved.
4) The invention is particularly suitable for the permanent single-layer lining drainage construction of the hyperboloid dome underground tank room.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a flow chart of a drainage and concrete spraying construction process according to an embodiment of the present invention;
FIG. 2 is a top view of a hyperboloid dome tank room (not containing an impervious concrete layer) in an embodiment of the present invention;
FIG. 3 is a cross-sectional layout view of a hyperboloid dome tank room (not including an impervious concrete layer) in an embodiment of the invention;
FIG. 4 is a schematic view of the arrangement of the drain plate at the bottom of the tank room in FIG. 3;
fig. 5 is a schematic structural view of a drainage plate according to an embodiment of the present invention in a lap joint state.
In the figure: 1. primarily spraying concrete; 2. a longitudinal drainage plate; 3. a first circumferential drainage plate; 4. shooting a nail; 5. an impervious concrete layer; 6. circumferential drainage side ditches; 7. a base plate; 8. a second circumferential drain plate; 9. curved surface drain bar.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided a drainage method for a permanent single-layer lining of an underground tank room of a hyperboloid dome, which includes performing blasting excavation on the underground tank room of the permanent single-layer lining, and performing drainage according to the following steps:
cleaning the inner wall surfaces of the dug hyperboloid dome and the tank chamber rock mass, discharging slag, and spraying primary spray concrete 1 to form a primary spray concrete layer.
Step two, uniformly arranging concave-convex drainage plates on the initial spraying concrete 1 of the hyperboloid dome and the tank room along the contour line, arranging horizontal drainage plates on a bottom plate 7 of the tank room, and connecting a plurality of drainage plates in a lap joint manner to form a pipe network drainage system, wherein the drainage plates are fixed on the initial spraying concrete 1; the mutually lapped drainage plates can enable seepage water to flow in a pipe network drainage system, and the seepage water is finally discharged from the bottom after confluence.
And thirdly, spraying impervious concrete on the initial sprayed concrete 1 or the concave-convex drainage plate of the hyperboloid dome and the tank room to form a impervious concrete layer 5.
And fourthly, arranging a circumferential drainage lateral ditch 6 on a tank room bottom plate 7 on the periphery of the impervious concrete layer 5 along the circumferential direction, leading seepage water in a pipe network drainage system into the circumferential drainage lateral ditch 6 through the tank room longitudinal drainage plate 2 and a horizontal drainage plate on the bottom plate 7, and then discharging the seepage water.
In the specific embodiment of the invention, the reinforced drainage plates are additionally arranged at the water seepage points of the hyperboloid dome and the inner wall of the tank room, and are in lap joint communication with the adjacent drainage plates to further discharge seepage water.
In the specific embodiment of the invention, the drainage plate is fixedly connected with the primary sprayed concrete 1 through the shooting nail 4.
In the embodiment of the invention, the communicated space formed at the bottom of the concave-convex drainage plate cup-shaped structure is used as the drainage groove, the cup opening in the tank room faces the inside of the tank room when the drainage plate is laid, and the cup bottom at the dome part is laid upwards, so that the seepage water can flow in the drainage groove conveniently, and meanwhile, the seepage water is prevented from permeating into the anti-seepage concrete layer 5 and flowing into the tank room. The overall height of concave-convex type drain bar is 50mm, and panel thickness is 12mm, and the width is 200mm, and of course in other embodiments, concave-convex type drain bar size can be adjusted according to actual conditions, can improve drain bar's overall height and panel thickness in the strong region of infiltration. The drainage plate is lapped by adopting a mode of buckling the tooth holes when being laid.
In the embodiment of the invention, the cross section of the annular drainage side ditch is 20cm in width and 10cm in height, so that the requirement of seepage water flow is met, and the water flow is prevented from overflowing onto the bottom plate 7.
In the specific embodiment of the invention, the longitudinal drainage plates 2 and the first circumferential drainage plates 3 which are uniformly distributed are arranged in the tank room along the contour line, and the longitudinal drainage plates 2 and the first circumferential drainage plates 3 are vertical to each other. The height of the longitudinal drainage plate 2 extends from the dome to tank room interface to the floor 7.
Preferably, the distance between the longitudinal drain plates 2 and the distance between the first circumferential drain plates 3 are 4-6m, respectively. Preferably 5m, i.e. the arc distance between the longitudinal drainage plates 2 is 5m, and the height distance of the first circumferential drainage plate 3 is 5 m. First hoop drain bar 3 and 2 mutually perpendicular settings of vertical drain bar, it is that the perforation is buckled mutually to intersect, the bottom surface of the underground tank room between vertical drain bar 2 and hoop drainage side ditch 6 is provided with horizontal drain bar, the horizontal drain bar overlap joint that sets up on vertical drain bar 2 and the bottom plate 7, horizontal drain bar's one end and vertical drain bar 2 intercommunication, the other end and hoop drainage side ditch 6 intercommunication, the first hoop drain bar 3 of groundwater infiltration and vertical drain bar 2, rivers reach bottom plate 7 department horizontal drain bar via vertical drain bar 2, horizontal drain bar is used for communicateing vertical drain bar 2 and hoop drainage side ditch 6, rivers are discharged to the hoop drainage side ditch 6 in the end, thereby reduce the external water pressure of tank room individual layer lining.
In the specific embodiment of the invention, the dome is provided with the second annular drainage plate 8 and the curved drainage plate 9 along the contour line, the curved drainage plate 9 is perpendicular to the second annular drainage plate 8, and two end parts of the curved drainage plate 9 are in lap joint communication with the longitudinal drainage plate 2 in the tank chamber. The second circumferential drainage plate 8 is provided with one, but in other embodiments, the second circumferential drainage plate 8 may be provided with a plurality of channels as the case may be. The curved surface drain board 9 is located in the middle of the dome and is provided with one through the dome top, and in other embodiments, the curved surface drain board 9 also can be provided with the multichannel according to actual conditions, can pass through the dome top, also can not pass through the top for improve drainage ability.
The concave-convex drainage plates are fixed on the primary sprayed concrete 1 through the shooting nails 4, and the drainage plates are uniformly distributed on the inner wall surfaces of the tank room and the dome, so that the overall drainage performance of the tunnel is improved on the basis of ensuring the advantage that the spray anchor single-layer lining is tightly attached to the surrounding rock, and the tunnel is simple, economical and reasonable in construction and high in practicability and applicability.
In the specific embodiment of the invention, a steel bar mesh is erected in the impervious concrete layer 5; preferably, the impermeable concrete layer 5 includes a first impermeable concrete layer and a second impermeable concrete layer, and reinforcing meshes are erected in the first impermeable concrete layer and the second impermeable concrete layer for reinforcing strength. The impervious concrete layer 5 is 25cm thick and is sprayed in two layers. The concrete spraying construction process comprises the following steps:
after the drainage plates are laid and fixed, a first layer of reinforcing mesh is erected on the 1 layer of the primary sprayed concrete; applying a first layer of impervious concrete; then erecting a second layer of reinforcing mesh; and applying a second layer of impervious concrete.
In the specific embodiment of the invention, the impervious concrete is C30 polypropylene fiber concrete in parts by weight, and comprises the following components:
10 parts of cement, 15-17 parts (such as 15 parts, 15.5 parts, 16 parts and 16.5 parts) of coarse aggregate, 17-19 parts (such as 17 parts, 17.5 parts, 18 parts and 18.5 parts) of fine aggregate, 4-5 parts (such as 4.2 parts, 4.4 parts, 4.6 parts and 4.8 parts) of water, 0.1-0.3 part (0.1 part, 0.15 part, 0.2 part and 0.25 part) of water reducing agent, 0.7-0.9 part (such as 0.7 part, 0.75 part, 0.8 part and 0.85 part) of accelerating agent, 0.4-0.6 part (such as 0.4 part, 0.45 part, 0.5 part and 0.55 part) of silica powder and 0.01-0.02 part (such as 0.012 part, 0.015 part and 0.018 part) of polypropylene fiber.
Preferably, the mixing mass of the silicon powder is 5.2% of the mass of the cement, and the mixing mass of the polypropylene fiber is 0.1875% of the mass of the cement. The concrete example of the dosage of the C30 polypropylene fiber concrete comprises the following components: 10 parts of cement, 16.6 parts of coarse aggregate, 18 parts of fine aggregate, 4.3 parts of water, 0.23 part of water reducing agent, 0.8 part of accelerating agent, 0.52 part of silicon powder and 0.01875 part of polypropylene fiber. The anti-seepage concrete prepared from the component has better anti-seepage performance, better anti-seepage capability and strength and good compactness.
The polypropylene fiber is doped in the outer sprayed concrete matrix, so that the generation of concrete shrinkage cracks can be prevented or reduced, the deformation characteristic and the toughness of the concrete are improved, and the impermeability of the sprayed concrete is improved.
Proper amount of silicon powder is added into the sprayed concrete matrix, so that the compactness, impermeability and strength of the sprayed concrete can be improved.
The C30 polypropylene fiber shotcrete in the invention adopts the determined mixing ratio, the strength of the shotcrete reaches 23.8Mpa in 1 day, the strength of the shotcrete reaches 32Mpa in 7 days after the shotcrete is tested by the local engineering quality testing center, the anti-permeability grade can reach more than P10, and the waterproof requirement of single-layer lining is met.
The construction process flow of the invention in the process of drainage and concrete spraying mainly comprises the following steps: cleaning a spraying surface, primary spraying, laying a drainage plate, metering ingredients in a concrete mixing plant, mixing impervious concrete, shipping and spraying the ingredients, adding an accelerating agent, and performing on-site spraying, comprehensive inspection and unqualified position supplementary spraying of the impervious concrete by using a concrete sprayer.
During construction operation, at first blast the excavation in permanent individual layer lining cutting underground tank room, carry out the construction of primary spray concrete 1 promptly after slagging tap and accomplishing, treat primary spray concrete 1 again and do the completion after, carry out maintenance inspection to the relevant mechanical equipment of drainage construction, and prepare the drain bar material, according to the construction design, to vertical drain bar 2, bottom plate 7 department drain bar, first hoop drain bar 3, the second is cyclic to drain bar 8 and the setting out of shape of curved surface drain bar 9 position measurement, it is fixed to utilize shooting nail 4, when guaranteeing that drain bar and primary spray concrete 1 closely laminate, through the gap drainage between concave-convex drain bar and primary spray concrete 1 face. As the permanent single-layer lining closely follows the excavation working face, the drainage plate needs to be paved evenly in sections and parts, the tooth holes at the joint and the intersection are buckled, then the second layer of C30 polypropylene fiber concrete is sprayed for 25cm, the spraying is carried out in two layers, and the reinforcing mesh is paved in each layer. The tank room is constructed by spraying from top to bottom, when the construction is carried out to a tank room bottom plate 7, a circumferential drainage lateral ditch 6 is arranged on the bottom plate 7, and the underground water seepage is discharged to the circumferential drainage lateral ditch 6 through the longitudinal drainage plate 2 and then is discharged to the outside through the lateral ditch.
In conclusion, the permanent single-layer lining drainage method for the hyperboloid dome underground tank room, provided by the invention, combines the underground tank room with abundant underground water, provides a lining drainage structure with convenient construction and low manufacturing cost, improves the overall drainage performance of the permanent single-layer lining on the basis of ensuring the advantage that the permanent single-layer lining is tightly attached to surrounding rocks, and has the advantages of simple construction, economy and reasonability, and higher practicability and applicability.
The C30 polypropylene fiber concrete is doped with a proper amount of silicon powder, so that the compactness of the concrete slurry structure is improved, the concrete pore structure is improved, and the impermeability of the outer layer concrete is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for draining water from a permanent single-layer lining of an underground tank room with a double-curved dome, which is characterized by comprising the following steps:
cleaning the inner wall surfaces of an excavated hyperboloid dome and a tank room rock mass, and spraying primary sprayed concrete to form a primary sprayed concrete layer;
uniformly arranging drainage plates on the initial spraying concrete layers of the hyperboloid dome and the tank room along the contour lines, arranging horizontal drainage plates on a bottom plate of the tank room, and connecting a plurality of drainage plates in a lap joint manner to form a pipe network drainage system, wherein the drainage plates are fixed on the initial spraying concrete;
thirdly, spraying impervious concrete on the initial spraying concrete layers or the drainage plates of the hyperboloid dome and the tank room to form a impervious concrete layer;
and fourthly, arranging an annular drainage lateral ditch on a tank room bottom plate on the periphery of the impervious concrete layer along the circumferential direction, leading the water seepage in a pipe network drainage system into the annular drainage lateral ditch through a longitudinal drainage plate on the tank room and a horizontal drainage plate on the bottom plate, and then discharging.
2. The method for the permanent single-layer lining drainage of the hyperboloid dome underground tank room according to claim 1, wherein the overall height of the drainage plate is 50mm, the thickness of the panel is 12mm, the width of the panel is 200mm, and the drainage plate is overlapped in a tooth hole buckling manner when being laid;
preferably, the drain board is a concave-convex type drain board.
3. The method for draining water in a permanent single-layer lining of a hyperboloid dome underground tank room as claimed in claim 2, wherein longitudinal drainage plates and first circumferential drainage plates are uniformly arranged along the contour line in the tank room, and the longitudinal drainage plates and the circumferential drainage plates are perpendicular to each other;
preferably, the distance between the longitudinal drainage plates and the distance between the first circumferential drainage plates are both 4-6 m.
4. The method for draining water in a permanent single-layer lining of a hyperboloid dome underground tank room as claimed in claim 3, wherein a second annular drainage plate and a curved drainage plate are arranged on the dome along the contour line, two tangent lines of the curved drainage plate and the second annular drainage plate at the intersection point are perpendicular to each other, and two end parts of the curved drainage plate are in lap joint communication with the longitudinal drainage plate in the tank room.
5. The method for draining water from a permanent single-layer lining of a hyperboloid dome underground tank room of claim 1, wherein the drainage plate is fixedly connected with the primary sprayed concrete through a nail.
6. The method for draining water in the permanent single-layer lining of the underground tank room with the double-curved-surface dome as claimed in claim 1, wherein reinforced drainage plates are additionally arranged at water seepage points of the double-curved-surface dome and the inner wall of the tank room, and the reinforced drainage plates are in lap joint communication with the adjacent drainage plates.
7. The method for draining water in a permanent single-layer lining of an underground tank room with a double-curved-surface dome as claimed in any one of claims 1 to 6, wherein a reinforcing mesh is erected in the impervious concrete layer;
preferably, the impervious concrete layer comprises a first layer of impervious concrete and a second layer of impervious concrete, and reinforcing meshes are erected in the first layer of impervious concrete and the second layer of impervious concrete.
8. The method for permanent single-layer lining drainage of a hyperboloid dome underground tank room of claim 7, wherein the impervious concrete comprises the following components in parts by mass:
10 parts of cement, 15-17 parts of coarse aggregate, 17-19 parts of fine aggregate, 4-5 parts of water, 0.1-0.3 part of water reducing agent, 0.7-0.9 part of accelerating agent, 0.4-0.6 part of silicon powder and 0.01-0.02 part of polypropylene fiber.
9. The method for draining water in a permanent single-layer lining of an underground tank room with a hyperboloid dome as claimed in claim 8, wherein the silicon powder is doped with 5.2% by mass of cement, and the polypropylene fiber is doped with 0.1875% by mass of cement.
10. The method of permanently single-lining drainage of a hyperboloidal domed underground tank room of claim 7, wherein said impervious concrete is C30 concrete.
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| CN202011359583.9A CN112431615A (en) | 2020-11-27 | 2020-11-27 | Permanent single-layer lining drainage method for underground tank room of hyperboloid dome |
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| CN202011359583.9A CN112431615A (en) | 2020-11-27 | 2020-11-27 | Permanent single-layer lining drainage method for underground tank room of hyperboloid dome |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320372A (en) * | 2022-01-06 | 2022-04-12 | 中交二公局第四工程有限公司 | Large-span slip form construction method for underground tank room and tank room |
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| CN114320372A (en) * | 2022-01-06 | 2022-04-12 | 中交二公局第四工程有限公司 | Large-span slip form construction method for underground tank room and tank room |
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