CN114150628B - Rock-fill dam top spillway chute and construction method thereof - Google Patents
Rock-fill dam top spillway chute and construction method thereof Download PDFInfo
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- CN114150628B CN114150628B CN202111311935.8A CN202111311935A CN114150628B CN 114150628 B CN114150628 B CN 114150628B CN 202111311935 A CN202111311935 A CN 202111311935A CN 114150628 B CN114150628 B CN 114150628B
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention is used in the technical field of dam construction, and particularly relates to a spillway chute of a rock-fill dam and a construction method thereof.
Description
Technical Field
The invention is used in the technical field of dam construction, and particularly relates to a spillway chute at the top of a rock-fill dam and a construction method thereof.
Background
At present, a rock-fill dam top spillway chute of a dam top overflow panel dam adopts a sectional design, structural joints are arranged between the sections, and compared with a chute without parting, the parting design can better adapt to the deformation of a dam body and reduce the secondary internal force of the structure, but has some defects: 1. the independent groove sections after parting hardly meet the requirement of anti-skid stability on a steep dam slope; 2. each groove section works independently, and the overall shock resistance is poor.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a spillway chute at the top of a rock-fill dam and a construction method thereof, which have better shock resistance and integrity, can meet the requirements of anti-skidding stability on a steep dam slope and can meet the requirements of deformation and settlement of a dam body.
The invention provides a spillway chute on the top of a rock-fill dam, which comprises a control section chute body, a flow picking section chute body and a plurality of section chute bodies, wherein the control section chute body is arranged at the top of the rock-fill dam, the flow picking section chute body is arranged at the bottom of the rock-fill dam, two ends of the section chute body are provided with assembly ports, the bottom of the section chute body is provided with a sliding-resistant step, each section chute body is sequentially clamped and matched on the slope of the rock-fill dam and positioned between the control section chute body and the flow picking section chute body, the sliding-resistant step is embedded into the slope of the rock-fill dam, a certain matching gap is reserved between each section chute body, the control section chute body is mutually clamped and matched with the section chute body at the top of the slope of the rock-fill dam, and a matching gap is reserved.
The technical scheme has at least the following advantages or beneficial effects: the demand that the dam body subsided and warp can be satisfied through reserving the fit clearance between each section cell body, the slip blocking table step of each section cell body imbeds in the dam body, so let out the groove and be connected more firmly with the dam body for let out the groove wholly have better anti-skidding stability, be assembled fit connection between each section cell body, be fit connection between control end cell body and the section cell body, be fit connection between the section cell body of choosing and flow section cell body and the section cell body, so be interconnect between the whole cell body, let out the groove and have better wholeness and shock resistance.
Further as an improvement of the technical scheme of the invention, the segment groove body comprises a first segment groove, one end of the groove wall of the first segment groove is provided with a first assembling boss, the other end of the groove wall of the first segment groove is provided with a first assembling concave position, one end of the groove wall of the control segment groove body is provided with a second assembling concave position, and the first assembling boss can be matched with the second assembling concave position.
Further as an improvement of the technical scheme of the invention, one end of the bottom of the first section groove is provided with a third assembling concave position, the bottom of the control section groove body is provided with a second assembling boss, and the second assembling boss can extend into the first section groove and be matched with the third assembling concave position.
Further as an improvement of the technical scheme of the invention, the segment groove body comprises a second segment groove, one end of the groove wall of the second segment groove is provided with a third assembling boss, the other end of the groove wall of the second segment groove is provided with a fourth assembling concave position, and the third assembling boss can be matched with the first assembling concave position.
Further as an improvement of the technical scheme of the invention, one end of the bottom of the second segment groove is provided with a fourth assembling boss, the bottom of the first segment groove is provided with a first overlapped tile which extends outwards, the first overlapped tile is provided with a first assembling groove, and the first overlapped tile can extend into the second segment groove to enable the first assembling groove to be matched with the fourth assembling boss.
Further as an improvement of the technical scheme of the invention, the segment groove body comprises a third segment groove, one end of the groove wall of the third segment groove is provided with a fifth assembling boss, the other end of the groove wall of the third segment groove is provided with a fifth assembling concave position, and the fifth assembling boss can be matched with the fourth assembling concave position.
Further as an improvement of the technical scheme of the invention, one end of the bottom of the third segment groove is provided with a sixth assembling boss, the bottom of the second segment groove is provided with a second overlapped tile which extends outwards, the second overlapped tile is provided with a second assembling groove, and the second overlapped tile can extend into the third segment groove to enable the second assembling groove to be matched with the sixth assembling boss.
Further as an improvement of the technical scheme of the invention, one end of the groove wall of the flow picking section groove body is provided with a seventh assembling boss which can be matched with the fifth assembling concave phase.
Further as an improvement of the technical scheme of the invention, the bottom of the third section groove is provided with an eighth assembling boss extending outwards, the bottom of the flow picking section groove body is provided with a sixth assembling concave position, and the eighth assembling boss can extend into the flow picking section groove body and be matched with the sixth assembling concave position.
The invention also provides a construction method of the spillway chute at the top of the rock-fill dam, which comprises the following steps:
excavating a spillway foundation on the dam body from top to bottom, wherein the spillway foundation comprises a control section foundation, a chute foundation and a diversion section foundation;
an anchor bar is arranged on the base surface of the flow-picking section, after the strength is achieved, a flow-picking section groove body is poured, and a sixth assembling concave position and a seventh assembling boss are formed on the flow-picking section groove body during pouring;
paving plain concrete on the slope of the excavated dam body to serve as a working surface for controlling the casting of the section groove body and the section groove body, and erecting templates and reinforcing steel bars on the working surface;
the method comprises the steps of casting a third section groove, a second section groove, a first section groove and a control section groove body from bottom to top in a segmented mode, arranging water stopping components among the section grooves and between the control section groove body and the section groove, forming a fifth assembly boss, a sixth assembly boss and a fifth assembly concave position on the third section groove during casting, forming a third assembly boss, a fourth assembly concave position and a second overlapping tile on the second section groove, arranging a first assembly boss, a first assembly concave position and a third assembly concave position on the first section groove, and forming a second assembly concave position and a second assembly boss on the control section groove body during casting;
after the concrete is solidified, removing the mould, and backfilling the earth and stone to the design elevation according to the design scheme of the dam.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic illustration of a chute according to one embodiment of the invention in a rock-fill dam body;
FIG. 2 is a schematic illustration of a segment of the chute of the embodiment of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic view in the direction B in FIG. 2;
FIG. 5 is a schematic view in the direction C of FIG. 2;
FIG. 6 is a schematic illustration of two second segment slots interfacing in one embodiment of the invention;
fig. 7 is a side cross-sectional view of fig. 6.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1-7, the invention provides a spillway chute at the top of a rock-fill dam, which comprises a control section chute body 1, a diversion section chute body 5 and a plurality of section chute bodies.
The control section groove body 1 is arranged at the top of the rock-fill dam, the concrete structure is a groove structure poured at the top of the dam, and an overflow weir is arranged in the control section groove body 1.
The cantilever section groove body 5 is arranged at the bottom of the rock-fill dam and is poured on bedrock at the bottom of the dam body, the volume of the cantilever section groove body 5 is large, the friction coefficient with bedrock is large, the bonding force is strong, anchor rods are further distributed on the bonding surface of the cantilever section groove body 5 and the bedrock, the sliding trend is weak, so that the anti-sliding stability of the cantilever section groove body 5 is strong, and the anti-sliding stability margin is large.
The two ends of the segment groove bodies are provided with assembly ports, each segment groove body is sequentially clamped and matched on the slope of the rock-fill dam and located between the control segment groove body 1 and the diversion segment groove body 5, a certain fit clearance is reserved between each segment groove body, and the requirements of dam settlement and deformation can be met through the fit clearance reserved between each segment groove body.
Specifically, the fit clearance between the groove bodies of each segment is 1-5 cm.
In addition, the bottom of the segment groove body is provided with a sliding-resisting table step 6, and the sliding-resisting table step 6 is embedded into the slope of the rock-fill dam, so that the segment groove body can be effectively prevented from sliding on the slope of the dam body.
The control section groove body 1 is mutually clamped and matched with the section groove body at the top of the slope of the rock-fill dam, and a certain fit clearance is reserved, so that the requirements of deformation and settlement of the dam body can be met through the fit relation between the control section groove body 1 and the section groove body and the reserved fit clearance.
Specifically, the fit clearance between the control section groove body 1 and the section groove body at the top of the slope of the rock-fill dam is 1-5 cm.
The diversion section groove body 5 is mutually clamped and matched with the section groove body at the bottom of the slope of the rock-fill dam, a certain fit clearance is reserved between the diversion section groove body and the section groove body, and the requirements of deformation and settlement of the dam body are met through the fit relation and the fit clearance between the diversion section groove body and the section groove body.
In addition, as the section groove bodies are in matched connection, the control end groove body 1 is also in matched connection with the section groove bodies, and the diversion section groove body 5 is also in matched connection with the section groove bodies, the groove body sections of the whole leakage groove are mutually connected and are not in independent relation, and therefore the integrity and the shock resistance of the leakage groove are better.
In some embodiments, the segment tank body comprises a first segment tank 2, one end of the tank wall of the first segment tank 2 is provided with a first assembling boss 20, the other end of the tank wall of the first segment tank 2 is provided with a first assembling concave position 21, one end of the tank wall of the control segment tank body 1 is provided with a second assembling concave position 10, and the first assembling boss 20 can be mutually matched with the second assembling concave position 10.
Specifically, the first section groove 2 is a groove head section of the whole groove, the groove head section is arranged at the slope top of the dam body, the first assembling boss 20 protrudes outwards along the extending direction of the first section groove 2, correspondingly, the second assembling concave position 10 is recessed inwards towards the extending direction of the control section groove body 1, and the first assembling boss 20 can be matched with the second assembling concave position 10, so that the second assembling concave position 10 can limit the first assembling boss 20, and deformation displacement of the first section groove 2 in the Z-axis negative direction is controlled.
Further, one end of the bottom of the first section groove 2 is provided with a third assembling concave position 22, the bottom of the control section groove body 1 is provided with a second assembling boss 11, and the second assembling boss 11 can extend into the first section groove 2 and be matched with the third assembling concave position 22.
Specifically, the third assembling concave position 22 is at the bottom of the first section groove 2 and is recessed inwards along the extending direction of the first section groove 2, the second assembling boss 11 is protruded outwards at the bottom of the control section groove body 1, after the control section groove body 1 is matched with the first section groove 2, the second assembling boss 11 can be embedded into the first section groove 2 and matched with the third assembling concave position 22, when the first section groove 2 generates horizontal displacement along the Y-axis direction due to the current excitation vibration, the second assembling boss 11 can be mutually extruded with the groove wall of the first section groove 2, so that the relative displacement between the control section groove body 1 and the first section groove 2 in the Y-axis direction can be effectively controlled.
The Y-axis direction is the direction perpendicular to the X-axis and Z-axis.
In addition, the third assembling concave position 22 and the second assembling boss 11 can restrict the displacement of the first section groove 2 in the positive direction of the Z axis, and the second assembling concave position 10 and the first assembling boss 20 can restrict the displacement of the first section groove 2 in the negative direction of the Z axis, so that the relative displacement between the control section groove body 1 and the first section groove 2 in the Z axis direction can be effectively controlled under the cooperation of the third assembling concave position 22 and the second assembling boss 11 and the cooperation of the second assembling concave position 10 and the first assembling boss 20, so as to ensure engineering safety.
Referring to fig. 2, 6 and 7, in some other embodiments, the segment groove body further comprises a second segment groove 3, one end of the groove wall of the second segment groove 3 is provided with a third assembling boss 30, the other end is provided with a fourth assembling recess 31, and the third assembling boss 30 can be mutually matched with the first assembling recess 21.
Specifically, the third assembling boss 30 protrudes outwards along the extending direction of the second segment groove 3, the first assembling concave portion 21 is arranged at one end of the first segment groove 2 away from the control segment groove body 1, the first assembling concave portion 21 is arranged on the side wall of the first segment groove 2 and is recessed inwards along the extending direction of the first segment groove 2, after the first segment groove 2 is matched and connected with the second segment groove 3, the third assembling boss 30 is matched with the first assembling concave portion 21, and the third assembling boss 30 can limit the displacement of the first segment groove 2 in the positive Z-axis direction.
Further, a fourth assembling boss 32 is provided at one end of the bottom of the second segment groove 3, a first stacking tile 23 extending outwards is provided at the bottom of the first segment groove 2, a first assembling groove 24 is provided on the first stacking tile 23, and the first stacking tile 23 can extend into the second segment groove 3 and be matched with the fourth assembling boss 32.
Specifically, the fourth assembling boss 32 is located inside the second segment groove 3 and protrudes along the positive direction of the Z-axis, the first stacking tile 23 extends outwards along the extending direction of the first segment groove 2, the first assembling groove 24 is formed in one side of the first stacking tile 23, and after the first segment groove 2 and the second segment groove 3 are in butt joint and fit with each other, the first stacking tile 23 extends into the second segment groove 3, so that the first assembling groove 24 and the fourth assembling boss 32 are in mutual fit.
If the first segment groove 2 slides along the slope, the first segment groove 2 presses the second segment groove 3 through the side wall, the first assembling groove 24 and the fourth assembling boss 32, and the second segment groove 3 generates resistance to play a role in preventing the first segment groove 2 from sliding.
If the second segment groove 3 slides along the slope, the second segment groove 3 pulls down the first segment groove 2 through the first assembling groove 24 and the fourth assembling boss 32, the first segment groove 2 generates resistance, and the second segment groove 3 is subject to sliding resistance, so the first assembling groove 24 and the fourth assembling boss 32 effectively control the relative sliding amount between the first segment groove 2 and the second segment groove 3, and the sliding resistance of the whole leakage groove is improved.
In addition, the first overlapped tile 23 is inserted into the second segment groove 3 for installation and matching, so if the first segment groove 2 and the second segment groove 3 are relatively displaced along the Y-axis direction due to the current excitation vibration, the first overlapped tile 23 and the groove wall of the second segment groove 3 are mutually pressed, so that the second segment groove 3 forms constraint on the first overlapped tile 23, and the relative displacement between the first segment groove 2 and the second segment groove 3 along the Y-axis direction is effectively controlled.
The first assembling groove 24 of the first shingle 23 is matched with the fourth assembling boss 32, and the fourth assembling boss 32 can limit the displacement of the first section groove 2 in the negative direction of the Z axis, so that the relative displacement of the first section groove 2 and the second section groove 3 in the Z axis direction can be realized at the joint of the first section groove 2 and the second section groove 3 through the matching of the first shingle 23 and the fourth assembling boss 32 and the matching of the third assembling boss 30 and the first assembling concave position 21, thereby ensuring engineering safety.
It should be noted that the second segment groove 3 belongs to a middle groove section of the leakage groove, and the second segment grooves 3 can be sequentially clamped and matched according to the length of the leakage groove to achieve the purpose of prolonging the leakage groove.
In some embodiments, the segment tank body further comprises a third segment tank 4, one end of a tank wall of the third segment tank 4 is provided with a fifth assembling boss 40, the other end of the tank wall of the third segment tank 4 is provided with a fifth assembling concave position 41, and the fifth assembling boss 40 can be mutually matched with the fourth assembling concave position 31.
Specifically, along the extending direction of the third segment groove 4, the fifth assembling boss 40 protrudes out of the groove wall of the third segment groove 4, and after the third segment groove 4 is in butt-joint fit with the second segment groove 3, the fifth assembling boss 40 is fitted on the fourth assembling concave position 31, and in the positive Z-axis direction, the fifth assembling boss 40 forms a limitation of the second segment groove 3, and further limits displacement of the second segment groove 3 in the positive Z-axis direction.
Further, a sixth assembling boss 42 is provided at one end of the bottom of the third segment groove 4, a second stacking shoe 35 extending outwards is provided at the bottom of the second segment groove 3, a second assembling groove 33 is provided on the second stacking shoe 35, and the second stacking shoe 35 can extend into the third segment groove 4 and cooperate with the sixth assembling boss 42.
Specifically, the sixth assembling boss 42 is located inside the third segment groove 4 and protrudes in the positive direction of the Z-axis, along the extending direction of the second segment groove 3, the second shingle 35 extends out of the groove bottom of the second segment groove 3, the second assembling groove 33 is formed on the bottom side of the second shingle 35, after the second segment groove 3 is matched with the third segment groove 4, the second shingle 35 extends into the third segment groove 4, and the second assembling groove 33 is matched with the sixth assembling boss 42.
The second segment groove 3 and the third segment groove 4 are matched with the second overlapping tile 35 through the sixth assembling boss 42 and the fifth assembling boss 40 and the fourth assembling concave position 31 to limit the relative displacement between the second segment groove 3 and the third segment groove 4 in the X, Y, Z direction, so that the integral structure of the chute is ensured to be stable.
In the embodiment shown in the invention, the fit clearance between the flow-picking section groove body 5 and the third section groove 4 is 1-5 cm, and the sliding stability of the flow-picking section groove body 5 at the bottom of the rock-fill dam is very strong, so when the sliding distance of the third section groove 4 at the bottom of the slope of the rock-fill dam exceeds 5cm, the flow-picking section groove body 5 can limit the third section groove 4, thereby ensuring the stability of the third section groove 4 and improving the overall stability of the chute.
In the present application, one end of the groove wall of the flow picking section groove body 5 is provided with a seventh assembling boss 50, and the seventh assembling boss 50 can be mutually matched with the fifth assembling concave position 41.
Specifically, the seventh assembling boss 50 protrudes outwards, and after the third segment groove 4 is matched with the cantilever groove body 5, the seventh assembling boss 50 defines the fifth assembling concave position 41, so that the displacement of the third segment groove 4 in the positive direction of the Z axis is further controlled.
Further, the bottom of the third segment groove 4 is provided with an eighth assembling boss 43 extending outwards, the bottom of the cantilever groove 5 is provided with a sixth assembling concave 51, and the eighth assembling boss 43 can extend into the cantilever groove 5 and be matched with the sixth assembling concave 51.
Specifically, the eighth assembling boss 43 protrudes from the bottom of the third segment groove 4 along the extending direction of the third segment groove 4, the sixth assembling concave portion 51 is recessed in the interior of the pick-up segment groove 5, after the third segment groove 4 is matched with the pick-up segment groove 5, the eighth assembling boss 43 can extend into the pick-up segment groove 5 and be matched with the sixth assembling concave portion 51, and thus, the relative displacement between the pick-up segment groove 5 and the third segment groove 4 in the directions X, Y, Z is limited by the matching of the seventh assembling boss 50 and the fifth assembling concave portion 41 and the matching of the eighth assembling boss 43 and the sixth assembling concave portion 51, so that the structural stability of the integral structure of the drain groove is ensured.
In some embodiments, the second segment tank 3 is provided with a first ventilation channel 34, the first ventilation channel 34 is arranged inside the tank wall of the second segment tank 3, one end of the first ventilation channel 34 is open to the bottom of the tank wall of the second segment tank 3, the other end is open to the top of the tank wall of the second segment tank 3, in particular, during the flowing process of water flow in the discharging tank, the water flow flowing through the first overlapped tile 23 falls from the first overlapped tile 23 to the tank bottom of the second segment tank 3, so that an aeration tank is formed between the first overlapped tile 23 and the second segment tank 3, and one end of the first ventilation channel 34, which is open to the tank wall bottom of the second segment tank 3, is communicated with the aeration tank, so that the aeration tank at the downstream end of the first overlapped tile 23 is in communication with the outside, and the purpose is to aerate the downstream end of the first overlapped tile 23 during the flood discharging.
Similarly, a second ventilation channel 44 is arranged on the third section groove 4, the second ventilation channel 44 is arranged inside the groove wall of the third section groove 4, one end of the second ventilation channel 44 is led to the bottom of the groove wall of the third section groove 4, the other end is led to the top of the groove wall of the third section groove 4, and one end of the second ventilation channel 44 led to the bottom of the groove wall of the third section groove 4 is also used for communicating the aeration groove formed by the second laminated tile 35 with the outside, so that the purpose is to aerate the downstream end of the second laminated tile 35 during flood discharge.
In addition, the invention also provides a construction method of spillway chute of the rock-fill dam top, which comprises the following steps:
selecting a dam site, and cleaning foundation weeds and loose strong weathered soil layers;
filling a dam body by adopting proper soil and stone according to the design scheme of the dam, filling in layers, and rolling in layers to ensure that the dry density of the dam body meets the requirements of design and regulation;
when the filling height of the dam body reaches the top surface height of the anchor pier or is slightly higher, burying the ground beam and the anchor bars until the dam is capped;
after the dam is capped for half a year, the settlement of the dam basically reaches balance, and a spillway foundation is excavated on the dam from top to bottom, wherein the spillway foundation comprises a control section foundation, a chute foundation and a flow picking section foundation, and in addition, disturbance is reduced as much as possible during excavation;
an anchor bar is arranged on the base surface of the flow picking section, after the strength is achieved, the flow picking section groove body 5 is poured, and a sixth assembling concave position 51 and a seventh assembling boss 50 are formed according to requirements during pouring;
paving plain concrete on the slope of the excavated dam body to serve as a working surface for casting the control section groove body 1 and the section groove body, erecting templates and reinforcing steel bars on the working surface, and casting a third section groove 4, a second section groove 3, a first section groove 2 and the control section groove body 1 from bottom to top in a sectional manner after checking that the connection between the anchor bars and the channel steel bars is correct;
during pouring, a fifth assembling boss 40, a sixth assembling boss 42, a fifth assembling concave position 41 and an eighth assembling boss 43 are formed on the third section groove 4, a third assembling boss 30, a fourth assembling boss 32, a fourth assembling concave position 31 and a second overlapped tile 35 are formed on the second section groove 3, a first assembling boss 20, a first assembling concave position 21, a third assembling concave position 22 and a first overlapped tile 24 are formed on the first section groove 2, and a second assembling concave position 10 and a second assembling boss 11 are formed on the control section groove body 1;
during pouring, water stopping parts 7 and foam plates are arranged among the section groove bodies, among the control section groove bodies 1 and the section groove bodies and among the diversion section groove bodies 5 and the section groove bodies, the foam plates are used for forming fit gaps at intervals, and the water stopping parts 7 mainly play a role in sealing and stopping water for the fit gaps;
after the concrete is solidified, removing the mould, and backfilling the earth and stone to the design elevation according to the design scheme of the dam.
Of course, the present application is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present application as defined in the claims.
Claims (2)
1. The spillway chute of the rock-fill dam crest is characterized in that: comprises a control section groove body, a flow-picking section groove body and a plurality of section groove bodies, wherein the control section groove body is arranged at the top of the rock-fill dam, the flow-picking section groove body is arranged at the bottom of the rock-fill dam, the two ends of the section groove body are provided with assembly ports, the bottom of the section groove body is provided with sliding-resisting steps, each section groove body is arranged on the slope of the rock-fill dam in a sequential clamping fit manner and is positioned between the control section groove body and the flow-picking section groove body, the sliding-resisting steps are embedded into the slope of the rock-fill dam, a fit gap is reserved between each section groove body, the control section groove body is matched with the section groove body at the top of the slope of the rock-fill dam in a clamping fit manner and a fit gap is reserved, the flow-picking section groove body is matched with the section groove body at the bottom of the slope of the rock-fill dam in a clamping manner and a fit gap is reserved, the section groove body comprises a first section groove, one end of the groove wall of the first section groove is provided with a first assembly boss, the other end of the groove wall of the first section groove is provided with a first assembling concave position, one end of the groove wall of the control section groove body is provided with a second assembling concave position, the first assembling boss can be matched with the second assembling concave position, one end of the groove bottom of the first section groove is provided with a third assembling concave position, the groove bottom of the control section groove body is provided with a second assembling boss, the second assembling boss can extend into the first section groove and be matched with the third assembling concave position, the section groove body comprises a second section groove, one end of the groove wall of the second section groove is provided with a third assembling boss, the other end of the groove wall of the second section groove is provided with a fourth assembling concave position, the third assembling boss can be matched with the first assembling concave position, one end of the groove bottom of the second section groove is provided with a fourth assembling boss, the groove bottom of the first section groove is provided with a first stacking tile which extends outwards, the first pile of tiles is provided with a first assembly groove, the first pile of tiles can extend into the second section groove to enable the first assembly groove to be matched with the fourth assembly boss, the section groove body comprises a third section groove, one end of the groove wall of the third section groove is provided with a fifth assembly boss, the other end of the groove wall of the third section groove is provided with a fifth assembly recess, the fifth assembly boss can be matched with the fourth assembly recess, one end of the groove bottom of the third section groove is provided with a sixth assembly boss, the groove bottom of the second section groove is provided with a second pile of tiles extending outwards, the second pile of tiles is provided with a second assembly groove, the second pile of tiles can extend into the third section groove to enable the second assembly groove to be matched with the sixth assembly boss, one end of the groove wall of the flow picking section groove body is provided with a seventh assembly boss, the groove bottom of the third section groove is provided with an outwards extending eighth flow picking boss, and the groove bottom of the eighth section groove body can be matched with the sixth assembly boss.
2. The construction method of the spillway chute of the rock-fill dam top is characterized by comprising the following steps:
excavating a spillway foundation on the dam body from top to bottom, wherein the spillway foundation comprises a control section foundation, a chute foundation and a diversion section foundation;
an anchor bar is arranged on the base surface of the flow-picking section, after the strength is achieved, a flow-picking section groove body is poured, and a sixth assembling concave position and a seventh assembling boss are formed on the flow-picking section groove body during pouring;
paving plain concrete on the slope of the excavated dam body to serve as a working surface for controlling the casting of the section groove body and the section groove body, and erecting templates and reinforcing steel bars on the working surface;
the method comprises the steps of casting a third section groove, a second section groove, a first section groove and a control section groove body from bottom to top in a segmented mode, arranging water stopping components among the section grooves and between the control section groove body and the section groove, forming a fifth assembly boss, a sixth assembly boss and a fifth assembly concave position on the third section groove during casting, forming a third assembly boss, a fourth assembly concave position and a second overlapping tile on the second section groove, arranging a first assembly boss, a first assembly concave position and a third assembly concave position on the first section groove, and forming a second assembly concave position and a second assembly boss on the control section groove body during casting;
after the concrete is solidified, removing the mould, and backfilling the earth and stone to the design elevation according to the design scheme of the dam.
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