CN111980028B - Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam - Google Patents
Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam Download PDFInfo
- Publication number
- CN111980028B CN111980028B CN202010959647.2A CN202010959647A CN111980028B CN 111980028 B CN111980028 B CN 111980028B CN 202010959647 A CN202010959647 A CN 202010959647A CN 111980028 B CN111980028 B CN 111980028B
- Authority
- CN
- China
- Prior art keywords
- dam section
- dam
- section
- roller compacted
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction method of an overflowing notch concrete rapid warehousing type roller compacted concrete dam, which comprises the following steps: firstly, constructing a foundation dam section; secondly, constructing a transition dam section; and thirdly, constructing a capping dam section. The invention constructs the conventional dam section and the transitional dam section roller compacted concrete adaptive dam section of the transitional dam section in a layered manner on the foundation dam section, and transforms the transitional dam section roller compacted concrete stepped dam section through the transitional dam section roller compacted concrete adaptive dam section, and constructs a plurality of layers of construction channels which are sequentially communicated to form a continuous through and concrete transport vehicle passing through on the transitional dam section roller compacted concrete stepped dam section, the concrete transport vehicle utilizes an inclined construction channel as a concrete transport road, and roller compacted concrete is directly poured into a warehouse for an overflowing notch, so that the construction period is short, the dam construction is convenient and rapid, the construction efficiency is high, the construction quality is guaranteed, and the construction cost is saved.
Description
Technical Field
The invention belongs to the technical field of roller compacted concrete dam construction, and particularly relates to a construction method of an overflowing notch concrete rapid warehousing type roller compacted concrete dam.
Background
In the construction process of the roller compacted concrete dam, due to flood discharge requirements in a flood season, an overflowing notch with a set size is reserved at a set position and an elevation of the dam in diversion design, and the overflowing notch can assist in diffusing flood water in the flood season. After the auxiliary diversion task is completed by the overflowing notch, a permanent building needs to be built according to design requirements.
When the overflowing notch dam section completes diversion task recovery construction, a certain height difference is formed between the overflowing notch dam section and the dams on the two sides, so that the mode of directly putting the roller compacted concrete into a warehouse is blocked. The existing construction method generally adopts a mode of arranging a conveying device (a chute, a belt conveyor and the like) beside a height difference step between the overflow notch dam section and the dam sections at two sides to transport the roller compacted concrete to the bin surface of the overflow notch dam section, and then a dump truck transports the concrete in the bin. Because the automobile can not directly enter the casting bin surface, the concrete is transferred by a chute, a belt conveyor and the like, so that the problems of complex working procedures, low construction efficiency, high construction cost, slow construction progress and the like exist.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and provides a construction method of an overflowing notch concrete rapid warehouse entry type roller compacted concrete dam.
In order to solve the technical problems, the invention adopts the technical scheme that: a construction method for an overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps:
step one, constructing a foundation dam section: constructing a foundation dam section with a designed elevation according to the design requirement of the foundation dam section;
step two, constructing a transition dam section, and the process is as follows:
step 201, determining the position of an overflow notch at the top of a foundation dam section;
step 202, constructing a conventional dam section construction layer on the foundation dam section on one side of the overflow notch;
step 203, reserving a dam face with a dam section unit length on the foundation dam section on the other side of the overflow gap as a first-layer step face of the roller compacted concrete stepped dam section of the transition dam section;
the first-layer step face of the roller compacted concrete stepped dam section of the transition dam section is flush with the bottom wall dam face of the gap of the overflowing notch;
step 204, constructing a self-adaptive dam section construction layer on the foundation dam section on the side, away from the overflow notch, of the first-layer step face of the roller compacted concrete stepped dam section of the transition dam section, and constructing a slope roadway on the first-layer step face of the roller compacted concrete stepped dam section of the transition dam section, wherein the slope roadway and the self-adaptive dam section construction layer are integrally cast;
step 205, constructing a conventional dam section construction layer on the previous conventional dam section construction layer;
step 206, reserving a dam face with a dam section unit length at one end of the previous self-adaptive dam section construction layer close to the overflow notch as the step face of the current layer of the roller compacted concrete stepped dam section of the transition dam section;
step 207, constructing a self-adaptive dam section construction layer on the residual dam face of the self-adaptive dam section construction layer on the previous layer, and constructing a slope roadway which is communicated with the step face on the previous layer on the step face of the roller compacted concrete stepped dam section of the transitional dam section, wherein the slope roadway on the step face of the current layer and the self-adaptive dam section construction layer are cast into a whole;
step 208, the steps 205 to 207 are repeated for a plurality of times until the construction reaches the design elevation of the transition dam section, at the moment, the multilayer conventional dam section construction layers form the conventional dam section of the transition dam section, the dam body between the top layer self-adaptive dam section construction layer and the foundation dam section forms the self-adaptive dam section of the transition dam section, the dam body between the self-adaptive dam section of the transition dam section and the overflow notch forms the stepped dam section of the transition dam section of the rolled concrete, and the space between the upper surfaces of the slope roadways and the top elevation surface of the self-adaptive dam section of the transition dam section forms the overflow flaring communicated with the overflow notch;
step 209, the concrete transport vehicle conveys the roller compacted concrete to the overflowing notch from the top of the roller compacted concrete self-adaptive dam section of the transition dam section through a plurality of slope driveways to fill the overflowing notch and the overflowing flaring;
the overflowing notch and the overflowing flaring are subjected to synchronous filling construction in a layered filling mode, a roller compacted concrete filling layer is formed at each filling layer of the overflowing notch and the overflowing flaring, and the overflowing notch and the overflowing flaring are completely filled by utilizing the multiple layers of roller compacted concrete filling layers to form an overflowing notch dam section of a transition dam section;
the transitional dam section overflow gap dam section and the conventional dam section of the transitional dam section, the transitional dam section roller compacted concrete adaptive dam section, the transitional dam section roller compacted concrete stepped dam section and the plurality of slope roadways form an integrated structure to complete construction of the transitional dam section;
step three, constructing a capping dam section: according to the design requirements of the roller compacted concrete dam on the dam crest and the overflow dam section, constructing a capping dam section on the transition dam section, wherein the capping dam section, the transition dam section and the foundation dam section form an integrated structure to complete the construction of the roller compacted concrete dam;
the roller compacted concrete dam is provided with a plurality of dam section parting joints in the length direction, and the dam section unit length is the distance between two adjacent dam section parting joints.
The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps of: the transition dam section roller compacted concrete stepped dam section comprises a plurality of layers of steps, the steps are located at the positions of the dam section parting joints along the two ends of the roller compacted concrete dam in the length direction, and one end elevation of the slope roadway close to the roller compacted concrete self-adaptive dam section of the transition dam section is higher than one end elevation of the slope roadway close to the overflow notch.
The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps of: the slope lanes are sequentially communicated to form a continuous through construction channel for the concrete transport vehicle to pass through.
The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps of: the width of the slope traffic lane is greater than that of the concrete transport vehicle, and the width of the slope traffic lane is less than that of the roller compacted concrete dam.
The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps of: the gradient of the slope lane is 8% -13%.
The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps of: the end face, facing the overflowing notch, of the conventional dam section of the transition dam section is a vertical plane, and the end face, facing the overflowing notch, of the conventional dam section of the transition dam section is parallel to the vertical plane.
Compared with the prior art, the invention has the following advantages:
1. the conventional dam section of the transitional dam section and the transitional dam section roller compacted concrete adaptive dam section which are positioned at two sides of the overflowing notch are constructed in a layered mode on the foundation dam section, wherein the conventional dam section of the transitional dam section is constructed according to conventional construction procedures, the dam section at the other side of the overflowing notch is subjected to reconstruction construction to form the transitional dam section roller compacted concrete adaptive dam section and the transitional dam section roller compacted concrete stepped dam section, the construction layer number of the transitional dam section roller compacted concrete adaptive dam section is selected according to the height adaptability of the overflowing notch, and the construction method is flexible, reliable and convenient to popularize and use.
2. The transitional dam section roller compacted concrete self-adaptive dam section, the transitional dam section roller compacted concrete stepped dam section and the slope roadway on the corresponding layer are synchronously constructed and formed, the construction period is not influenced, the dam construction is convenient and quick, the construction efficiency is high, the construction quality is guaranteed, the construction cost is saved, the reliability and the stability are realized, and the using effect is good.
3. The method has simple steps, the rolled concrete is conveyed into the overflowing notch to fill the overflowing notch and the overflowing flaring by using the concrete transport vehicle from the top of the overflowing notch of the transitional dam section through a plurality of slope lanes after the rolled concrete enters the warehouse, the concrete transport vehicle uses the inclined construction channel as a concrete transportation road, and the rolled concrete is directly poured into the overflowing notch, so that the method is convenient to popularize and use.
In summary, the conventional dam section and the transitional dam section roller compacted concrete adaptive dam section of the transitional dam section are constructed in a layered manner on the foundation dam section, the transitional dam section roller compacted concrete stepped dam section is reconstructed and constructed through the transitional dam section roller compacted concrete adaptive dam section, multiple layers of construction channels which are communicated in sequence are constructed on the transitional dam section roller compacted concrete stepped dam section to form a continuous through construction channel for a concrete transport vehicle to pass through, the concrete transport vehicle utilizes an inclined construction channel as a concrete transport road, and roller compacted concrete is directly poured into a warehouse of an overflowing notch.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a conventional dam segment construction layer of a first floor, a self-adaptive dam segment construction layer of the first floor and a slope roadway on a step surface of the first floor in the construction process.
Fig. 2 is a top view of fig. 1 with both banks removed.
FIG. 3 is a schematic structural diagram of two conventional dam section construction layers, two self-adaptive dam section construction layers and two slope lanes constructed by the method.
Fig. 4 is a top view of fig. 3 with both banks removed.
Fig. 5 is a schematic structural diagram of five layers of conventional dam section construction layers, five layers of self-adaptive dam section construction layers and five inclined roadways constructed by the method.
Fig. 6 is a top view of fig. 5 with both banks removed.
FIG. 7 is a schematic structural view of an overflow notch and an overflow flared single-layer filling according to the present invention.
Fig. 8 is a top view of fig. 7 with both banks removed.
FIG. 9 is a schematic view of the structure of the present invention for the completion of the flow gap and flow flaring filling.
Fig. 10 is a schematic view showing the construction of a roller compacted concrete dam according to the present invention.
FIG. 11 is a block flow diagram of a method of the present invention.
Description of reference numerals:
1-an overflow gap; 2-conventional dam section of transition dam section;
2-1-conventional dam section construction layer; 3-a transition dam section roller compacted concrete self-adaptive dam section;
3-1, constructing a self-adaptive dam section layer; 4-rolling the concrete stepped dam section by the transition dam section;
5-a ramp roadway; 6-overflowing flaring;
7-foundation dam section; 8-rolling concrete filling layer;
9-transition dam section overflowing gap dam section; 10-dividing the dam sections;
11-overflow dam section; 12-dam crest.
Detailed Description
As shown in fig. 1 to 11, the construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam of the invention comprises the following steps:
step one, constructing a foundation dam section: constructing a foundation dam section 7 with a designed elevation according to the design requirement of the foundation dam section 7;
in this embodiment, the foundation dam section is provided with a water inlet hole, a flow guide bottom hole and a flow discharge bottom hole.
In actual construction, the roller compacted concrete dam is built between two banks of a river for flood control, water storage, water supply and power generation.
Step two, constructing a transition dam section, and the process is as follows:
step 201, determining the position of an overflow notch 1 at the top of a foundation dam section 7;
step 202, constructing a conventional dam section construction layer 2-1 on the foundation dam section 7 on one side of the overflow notch 1;
step 203, reserving a dam face with a dam section unit length on the foundation dam section 7 on the other side of the overflow notch 1 as a first-layer step face of the roller compacted concrete stepped dam section 4 of the transition dam section;
the step surface of the first layer of the roller compacted concrete stepped dam section 4 of the transition dam section is flush with the dam surface of the bottom wall of the gap of the overflowing gap 1;
step 204, constructing a self-adaptive dam section construction layer 3-1 on a foundation dam section 7 on one side, away from the overflow notch 1, of the first-layer step face of the roller compacted concrete stepped dam section 4 of the transition dam section, and constructing a slope roadway 5 on the first-layer step face of the roller compacted concrete stepped dam section 4 of the transition dam section, wherein the slope roadway 5 and the self-adaptive dam section construction layer 3-1 are cast into a whole;
in this embodiment, the end face of the conventional dam section 2 of the transition dam section facing the overflow notch 1 is a vertical plane, and the end face of the roller compacted concrete adaptive dam section 3 of the transition dam section facing the conventional dam section 2 of the transition dam section is parallel to the vertical plane.
It should be noted that, when the conventional dam section 2 of the transition dam section is composed of only one conventional dam section construction layer 2-1 and the roller compacted concrete adaptive dam section 3 of the transition dam section is composed of only one adaptive dam section construction layer 3-1, the roller compacted concrete stepped dam section 4 of the transition dam section is not required to be constructed at this time, a dam facing with a dam section unit length is reserved on the foundation dam section 7 on the other side of the overflow notch 1 as a first-layer step facing of the roller compacted concrete stepped dam section 4 of the transition dam section, and a slope roadway 5 is used to guide the concrete truck from the roller compacted concrete adaptive dam section 3 of the transition dam section to the overflow notch 1, as shown in fig. 1 and fig. 2, at this time, the distance between the roller compacted concrete adaptive dam section 3 of the transition dam section and the conventional dam section 2 of the transition dam section is the sum of the length of the overflow notch 1 and the dam section unit length.
Step 205, constructing a conventional dam section construction layer 2-1 on the conventional dam section construction layer 2-1 of the previous layer;
step 206, reserving a dam face with a dam section unit length at one end of the previous self-adaptive dam section construction layer 3-1 close to the overflow notch 1 as a step face of the step dam section 4 of the transitional dam section roller compacted concrete step dam section;
step 207, constructing the self-adaptive dam section construction layer 3-1 on the residual dam face of the self-adaptive dam section construction layer 3-1 on the previous layer, constructing a slope roadway 5 which is communicated with the step face on the previous layer on the step face of the roller compacted concrete stepped dam section 4 on the transitional dam section, and pouring the slope roadway 5 on the step face of the current layer and the self-adaptive dam section construction layer 3-1 on the current layer into a whole;
it should be noted that, when the conventional dam section 2 of the transition dam section is composed of two conventional dam section construction layers 2-1, and the roller compacted concrete adaptive dam section 3 of the transition dam section is composed of two adaptive dam section construction layers 3-1, the second adaptive dam section construction layer 3-1 is a dam section unit length for the roller compacted concrete stepped dam section 4 of the transition dam section, and the roller compacted concrete stepped dam section 4 of the transition dam section is a dam section unit separated from the first adaptive dam section construction layer 3-1, a second slope roadway 5 is constructed on the roller compacted concrete stepped dam section 4 of the transition dam section, and the concrete truck is guided from the roller compacted concrete adaptive dam section 3 of the transition dam section to the overflow gap 1 by using the two through slope roadways 5, as shown in fig. 3 and 4, and the distance between the roller compacted concrete adaptive dam section 3 of the transition dam section and the conventional dam section 2 of the transition dam section is the length of the overflow gap 1 and the two dam unit gaps of the dam section The sum of the lengths shows that the structure of the roller compacted concrete adaptive dam section 3 of the transition dam section is determined according to the height data of the overflowing notch 1.
Step 208, the steps 205 to 207 are repeated for multiple times until the construction reaches the design elevation of the transitional dam section, at this time, a plurality of layers of conventional dam section construction layers 2-1 form a conventional dam section 2 of the transitional dam section, a dam body between a top layer self-adaptive dam section construction layer 3-1 and a base dam section 7 forms a transitional dam section roller compacted concrete self-adaptive dam section 3, a dam body between the transitional dam section roller compacted concrete self-adaptive dam section 3 and the overflowing notch 1 forms a transitional dam section roller compacted concrete stepped dam section 4, and overflowing flares 6 communicated with the overflowing notch 1 are formed in spaces between the upper surfaces of the slope carriageways 5 and the dam top elevation surface of the transitional dam section roller compacted concrete self-adaptive dam section 3;
it should be noted that, in this embodiment, the conventional dam section 2 of the transition dam section is composed of five conventional dam section construction layers 2-1, the roller compacted concrete adaptive dam section 3 of the transition dam section is composed of five adaptive dam section construction layers 3-1 as an example, the conventional dam section 2 of the transition dam section is composed of five conventional dam section construction layers 2-1 which are constructed sequentially from bottom to top, and the roller compacted concrete stepped dam section 4 of the transition dam section is constructed in a layer-by-layer retreating and ascending manner, as shown in fig. 5 and 6, at this time, the distance between the roller compacted concrete adaptive dam section 3 of the transition dam section and the conventional dam section 2 of the transition dam section is the sum of the length of the overflow notch 1 and the lengths of five dam section units.
Step 209, the concrete transport vehicle conveys the roller compacted concrete to the overflowing notch 1 from the top of the roller compacted concrete self-adaptive dam section 3 of the transition dam section through a plurality of slope lanes 5 to fill the overflowing notch 1 and the overflowing flaring 6;
the overflowing notch 1 and the overflowing flaring 6 are synchronously filled in a layered filling manner, a roller compacted concrete filling layer 8 is formed at each filling layer of the overflowing notch 1 and the overflowing flaring 6, and the overflowing notch 1 and the overflowing flaring 6 are completely filled in a bin by utilizing the multiple roller compacted concrete filling layers 8 to form a transitional dam section overflowing notch dam section 9;
the overflow gap dam section 9 of the transition dam section, the conventional dam section 2 of the transition dam section, the roller compacted concrete adaptive dam section 3 of the transition dam section, the roller compacted concrete stepped dam section 4 of the transition dam section and the plurality of slope lanes 5 form an integrated structure, and construction of the transition dam section is completed;
it should be noted that the overflow notch 1 and the overflow flaring 6 meet the design requirement of the diversion capability, the overflow notch 1 and the overflow flaring 6 assist in releasing flood in the flood season, after the overflow notch 1 and the overflow flaring 6 complete the auxiliary diversion task, backfill plugging is needed, the overflow notch 1 and the overflow flaring 6 adopt a layered filling method to perform synchronous filling construction, and each filling layer of the overflow notch 1 and the overflow flaring 6 forms a layer of roller compacted concrete filling layer 8, as shown in fig. 7 and 8, after the construction of the multilayer roller compacted concrete filling layer 8 is finished, a transition dam section overflow notch dam section 9 is formed, as shown in fig. 9.
In this embodiment, the plurality of slope lanes 5 are sequentially communicated to form a continuous through construction channel for the concrete transportation vehicle to pass through.
Step three, constructing a capping dam section: according to the design requirements of the roller compacted concrete dam on the dam crest 12 and the overflow dam section 11, a capping dam section is constructed on the transition dam section, the capping dam section, the transition dam section and the foundation dam section 7 form an integrated structure, and the construction of the roller compacted concrete dam is completed, as shown in fig. 10;
the roller compacted concrete dam is provided with a plurality of dam section parting joints 10 in the length direction, and the dam section unit length is the distance between two adjacent dam section parting joints 10.
It should be noted that, the conventional dam section 2 and the transitional dam section roller compacted concrete adaptive dam section 3 of the transitional dam sections located at two sides of the overflow notch 1 are constructed on the foundation dam section in a layered manner, wherein the conventional dam section 2 of the transitional dam section is constructed according to conventional construction procedures, the dam section at the other side of the overflow notch 1 is subjected to reconstruction construction to form the transitional dam section roller compacted concrete adaptive dam section 3 and the transitional dam section roller compacted concrete stepped dam section 4, the construction layer number of the transitional dam section roller compacted concrete adaptive dam section 3 is selected adaptively according to the height of the overflow notch 1, and the construction method is flexible and reliable; the transitional dam section rolled concrete self-adaptive dam section 3, the transitional dam section rolled concrete stepped dam section 4 and the slope roadway 5 on the corresponding layer are synchronously constructed and formed, the construction period is not influenced, the dam construction is convenient and rapid, the construction efficiency is high, the construction quality is guaranteed, the construction cost is saved, and the construction is reliable and stable; the concrete that the gap overflows in the roller compacted concrete dam is put in storage and is utilized concrete truck from 3 tops of transition dam section roller compacted concrete self-adaptation dam section through a plurality of slope roadways 5, carry roller compacted concrete to overflowing in the gap 1 and overflowing flaring 6 and fill in storage, the concrete truck utilizes the slope construction passageway as the haul road of concrete, directly to overflowing the gap and carry out roller compacted concrete pouring in storage.
In this embodiment, transition dam section roller compacted concrete stepped dam section 4 includes the multilayer step, the step all is located dam section parting 10 position department along roller compacted concrete dam length direction's both ends, and the one end elevation that slope traveller 5 is close to transition dam section roller compacted concrete self-adaptation dam section 3 is higher than the one end elevation that slope traveller 5 is close to overflow breach 1.
In this embodiment, the width of the slope lane 5 is greater than that of the concrete transport vehicle, and the width of the slope lane 5 is less than that of the roller compacted concrete dam.
In this embodiment, the gradient of the slope lane 5 is 8% to 13%.
When the invention is implemented, the conventional dam section and the transitional dam section roller compacted concrete adaptive dam section of the transitional dam section are constructed in a layered manner on the foundation dam section, the transitional dam section roller compacted concrete stepped dam section is reconstructed by the transitional dam section roller compacted concrete adaptive dam section, a plurality of layers of construction channels which are communicated in sequence and are used for the passage of a concrete transport vehicle are constructed on the transitional dam section roller compacted concrete stepped dam section, the concrete transport vehicle utilizes an inclined construction channel as a concrete transport road, and the roller compacted concrete is directly poured into a warehouse for an overflowing notch, so that the dam construction is convenient and rapid, the construction efficiency is high, the construction quality is ensured, the construction cost is saved, the problem that a conveying device is required to transport the roller compacted concrete can be avoided, compared with a warehouse entering mode of chute and transportation, the construction method is simple and reliable, other equipment and settings are not required to be added, various concrete construction equipment and construction materials can directly reach the reserved notch construction position, the problem that the equipment and materials for notch construction need to be transported to a construction bin surface in a hoisting mode is solved, the rolled concrete warehousing speed is high, and the construction quality of the rolled concrete is guaranteed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A construction method for an overflowing notch concrete rapid warehousing type roller compacted concrete dam is characterized by comprising the following steps:
step one, constructing a foundation dam section: constructing a foundation dam section (7) with a designed elevation according to the design requirement of the foundation dam section (7);
step two, constructing a transition dam section, and the process is as follows:
step 201, determining the position of an overflowing notch (1) at the top of a foundation dam section (7);
202, constructing a conventional dam section construction layer (2-1) on the foundation dam section (7) on one side of the overflow notch (1);
step 203, reserving a dam face with a dam section unit length on the foundation dam section (7) on the other side of the overflow notch (1) as a first-layer step face of the roller compacted concrete stepped dam section (4) of the transition dam section;
the first-layer step surface of the rolled concrete stepped dam section (4) of the transition dam section is flush with the dam surface of the bottom wall of the gap of the overflowing gap (1);
204, constructing a self-adaptive dam section construction layer (3-1) on a foundation dam section (7) on one side, away from the overflow notch (1), of the first-layer step face of the rolled concrete stepped dam section (4) of the transition dam section, constructing a slope roadway (5) on the first-layer step face of the rolled concrete stepped dam section (4) of the transition dam section, and pouring the slope roadway (5) and the self-adaptive dam section construction layer (3-1) into a whole;
step 205, constructing a conventional dam section construction layer (2-1) on the previous conventional dam section construction layer (2-1);
step 206, reserving a dam face with a dam section unit length at one end of the previous self-adaptive dam section construction layer (3-1) close to the overflow notch (1) as a step face of the step dam section (4) of the transition dam section roller compacted concrete step dam section;
step 207, constructing the self-adaptive dam section construction layer (3-1) on the residual dam faces of the self-adaptive dam section construction layer (3-1) on the previous layer, constructing a slope roadway (5) which is communicated with the step face on the previous layer on the step face of the roller compacted concrete stepped dam section (4) on the transition dam section, and pouring the slope roadway (5) on the step face on the current layer and the self-adaptive dam section construction layer (3-1) into a whole;
step 208, the steps 205 to 207 are repeated for multiple times until the design elevation of the transitional dam section is constructed, at the moment, a plurality of layers of conventional dam section construction layers (2-1) form the conventional dam section (2) of the transitional dam section, a dam body between a top layer self-adaptive dam section construction layer (3-1) and a foundation dam section (7) forms a transitional dam section roller compacted concrete self-adaptive dam section (3), a dam body between the transitional dam section roller compacted concrete self-adaptive dam section (3) and the overflowing notch (1) forms a transitional dam section roller compacted concrete stepped dam section (4), and overflowing flares (6) communicated with the overflowing notch (1) are formed in the space between the upper surfaces of the slope carriageways (5) and the dam top elevation surface of the transitional dam section roller compacted concrete self-adaptive dam section (3);
step 209, conveying the roller compacted concrete to the overflowing notch (1) by the concrete transport vehicle from the top of the transitional dam section roller compacted concrete adaptive dam section (3) through a plurality of slope roadways (5) to fill the overflowing notch (1) and the overflowing flaring (6);
the overflowing notch (1) and the overflowing flaring (6) are synchronously filled in a layered filling manner, a roller compacted concrete filling layer (8) is formed on each filling layer of the overflowing notch (1) and the overflowing flaring (6), and the overflowing notch (1) and the overflowing flaring (6) are completely filled in a bin by utilizing a plurality of layers of roller compacted concrete filling layers (8) to form an overflowing notch dam section (9) of a transition dam section;
the overflow gap dam section (9) of the transition dam section and the conventional dam section (2) of the transition dam section, the roller compacted concrete self-adaptive dam section (3) of the transition dam section, the roller compacted concrete stepped dam section (4) of the transition dam section and the plurality of slope roadways (5) form an integrated structure, and construction of the transition dam section is completed;
step three, constructing a capping dam section: according to the design requirements of the roller compacted concrete dam on the dam crest (12) and the overflow dam section (11), constructing a capping dam section on the transition dam section, wherein the capping dam section, the transition dam section and the foundation dam section (7) form an integrated structure to complete the construction of the roller compacted concrete dam;
the roller compacted concrete dam is provided with a plurality of dam section parting joints (10) in the length direction, and the dam section unit length is the distance between two adjacent dam section parting joints (10).
2. The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam as claimed in claim 1, characterized in that: transition dam section roller compacted concrete ladder dam section (4) are including the multilayer step, the step all is located dam section parting (10) position department along roller compacted concrete dam length direction's both ends, and slope traveller (5) are higher than slope traveller (5) and are close to the one end elevation that overflows breach (1) near the one end elevation of transition dam section roller compacted concrete self-adaptation dam section (3).
3. The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam as claimed in claim 1, characterized in that: the slope driveways (5) are sequentially communicated to form a continuous through construction channel for the concrete transport vehicle to pass through.
4. The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam as claimed in claim 1, characterized in that: the width of the slope traffic lane (5) is greater than that of the concrete transport vehicle, and the width of the slope traffic lane (5) is less than that of the roller compacted concrete dam.
5. The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam as claimed in claim 1, characterized in that: the gradient of the slope lane (5) is 8% -13%.
6. The construction method of the overflowing notch concrete rapid warehousing type roller compacted concrete dam as claimed in claim 1, characterized in that: the end face, facing the overflowing notch (1), of the conventional dam section (2) of the transition dam section is a vertical plane, and the end face, facing the conventional dam section (2) of the transition dam section, of the roller compacted concrete self-adaptive dam section (3) of the transition dam section is parallel to the vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959647.2A CN111980028B (en) | 2020-09-14 | 2020-09-14 | Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959647.2A CN111980028B (en) | 2020-09-14 | 2020-09-14 | Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111980028A CN111980028A (en) | 2020-11-24 |
| CN111980028B true CN111980028B (en) | 2021-06-04 |
Family
ID=73451089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010959647.2A Active CN111980028B (en) | 2020-09-14 | 2020-09-14 | Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111980028B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284503A (en) * | 2019-06-13 | 2019-09-27 | 水电水利规划设计总院 | A kind of construction control method of the pre- anti-cold seam of casting of concrete in mass |
| JP2019167735A (en) * | 2018-03-23 | 2019-10-03 | ヒロセ補強土株式会社 | Driftwood catching facility |
| CN110344376A (en) * | 2019-06-18 | 2019-10-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of toe transition structure suitable for arch dam on complex formation |
| CN110714447A (en) * | 2019-09-11 | 2020-01-21 | 江南水利水电工程公司 | Construction method for filling and rolling in dam subareas |
| CN111593732A (en) * | 2020-05-29 | 2020-08-28 | 中国水利水电第三工程局有限公司 | Roller compacted concrete warehousing method for crossing normal concrete dam section by adopting Bailey bridge |
| CN111593707A (en) * | 2020-06-09 | 2020-08-28 | 中国水利水电第七工程局有限公司 | Construction channel structure and construction method for large arch dam bottom gallery |
-
2020
- 2020-09-14 CN CN202010959647.2A patent/CN111980028B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019167735A (en) * | 2018-03-23 | 2019-10-03 | ヒロセ補強土株式会社 | Driftwood catching facility |
| CN110284503A (en) * | 2019-06-13 | 2019-09-27 | 水电水利规划设计总院 | A kind of construction control method of the pre- anti-cold seam of casting of concrete in mass |
| CN110344376A (en) * | 2019-06-18 | 2019-10-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of toe transition structure suitable for arch dam on complex formation |
| CN110714447A (en) * | 2019-09-11 | 2020-01-21 | 江南水利水电工程公司 | Construction method for filling and rolling in dam subareas |
| CN111593732A (en) * | 2020-05-29 | 2020-08-28 | 中国水利水电第三工程局有限公司 | Roller compacted concrete warehousing method for crossing normal concrete dam section by adopting Bailey bridge |
| CN111593707A (en) * | 2020-06-09 | 2020-08-28 | 中国水利水电第七工程局有限公司 | Construction channel structure and construction method for large arch dam bottom gallery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111980028A (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104564101A (en) | Single-tube double-layer tunnel simultaneous construction method | |
| CN111980028B (en) | Construction method of overflowing notch concrete rapid warehousing type roller compacted concrete dam | |
| CN110396881A (en) | The road construction method of section conllinear with rail traffic | |
| CN111502748B (en) | Construction method for backfilling foundation of railway crossing giant karst cave | |
| CN212452316U (en) | Bridge with small box girders prefabricated in longitudinal sections | |
| CN213417821U (en) | Concrete formula roller compacted concrete dam that puts in storage fast overflows breach structure | |
| CN111794782A (en) | Tunnel track ballast bed water-drainage preventing structure and construction method thereof | |
| CN107326791A (en) | The improved method and structure of a kind of overflow bridge | |
| CN107938612B (en) | A kind of mud-rock flow gravity type blocking dam group based on waste and old Container Reconstruction | |
| CN211777454U (en) | Flood diversion tunnel and urban traffic tunnel combined arrangement structure | |
| CN205999792U (en) | Spliced bridging structure | |
| CN210917369U (en) | Negative pressure chute device for rapid transportation of roller compacted concrete | |
| CN209798708U (en) | Half-and-half prefabricated corridor structure | |
| CN208717941U (en) | A kind of no toe board buttress type road shoulder retaining wall structure | |
| CN108951318B (en) | Drainage structure between low-level structure section lines of magnetic levitation track traffic | |
| CN112982611A (en) | Dry red mud yard and arrangement method thereof | |
| CN112049069A (en) | Construction method of ecological retaining dam | |
| CN111593707A (en) | Construction channel structure and construction method for large arch dam bottom gallery | |
| CN212248110U (en) | Two-way dam-crossing traffic corridor structure | |
| CN218406755U (en) | Subsection connection structure of prefabricated overhaul channel of subway | |
| CN211773866U (en) | Underground warehouse reconstructed from abandoned traffic holes | |
| CN212128713U (en) | Local bituminous paving restores structure | |
| CN210946885U (en) | Intensive miniature comprehensive pipe gallery suitable for railway station | |
| CN213233013U (en) | Road and bridge crack repairing structure | |
| CN106836231A (en) | The assembling constructing method of big cross section precast construction in the deep big foundation pit of soft clay area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |