CN104652371B - The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof - Google Patents
The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof Download PDFInfo
- Publication number
- CN104652371B CN104652371B CN201510045483.1A CN201510045483A CN104652371B CN 104652371 B CN104652371 B CN 104652371B CN 201510045483 A CN201510045483 A CN 201510045483A CN 104652371 B CN104652371 B CN 104652371B
- Authority
- CN
- China
- Prior art keywords
- dam
- upstream
- concrete
- downstream
- rock
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 47
- 239000003292 glue Substances 0.000 title claims description 9
- 239000004576 sand Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 40
- 238000004140 cleaning Methods 0.000 claims abstract 2
- 239000004568 cement Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000009415 formwork Methods 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 7
- 239000004575 stone Substances 0.000 abstract description 5
- 238000005253 cladding Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
本发明涉及以旧坝为基础建立的过水胶凝堆石坝及其施工方法,该过水胶凝堆石坝为在旧坝表面从内到外依次铺设有胶凝砂砾石坝层和堆石混凝土包裹层。该施工方法,包括旧坝上、下游表面的施工方法和顶部的施工方法,旧坝上、下游表面的施工方法包括:清理仓面;搭建上游模板和下游模板;堆石;填筑胶凝砂砾石料;浇筑自密性混凝土。旧坝顶部的施工方法包括:堆高旧坝的坝顶;堆石坝顶;浇筑坝顶自密性混凝土;拆除上游模板和下游模板。本发明实现了堆石混凝土和胶凝砂砾石料在旧坝基础上快速施工,省去上游面布置防渗面板的工序,简化施工、缩短工期。
The invention relates to a water-passing gelled rockfill dam built on the basis of an old dam and a construction method thereof. The water-passing gelled rockfill dam consists of laying a cemented sand and gravel dam layer and a stacking layer on the surface of the old dam in sequence from the inside to the outside. Stone concrete cladding. The construction method includes the construction method of the upper and lower surfaces of the old dam and the construction method of the top. The construction method of the upper and lower surfaces of the old dam includes: cleaning the warehouse surface; building the upstream formwork and downstream formwork; filling rocks; filling cemented gravel stone; pouring self-sealing concrete. The construction methods on the top of the old dam include: building up the crest of the old dam; The invention realizes rapid construction of rockfill concrete and gelled sand and gravel materials on the old dam foundation, saves the process of arranging anti-seepage panels on the upstream surface, simplifies construction, and shortens construction period.
Description
技术领域 technical field
本发明涉及一种以旧坝为基础建立的过水胶凝堆石坝及其施工方法,属于胶凝堆石坝的结构和施工技术领域。 The invention relates to a water-passing cemented rockfill dam built on the basis of an old dam and a construction method thereof, and belongs to the technical field of structures and constructions of cemented rockfill dams.
背景技术 Background technique
堆石坝的主体是用石料填筑,配以防渗体建成的坝;它是土石坝的一种。这种坝的优点是可充分利用当地天然材料,能适应不同的地质条件,施工方法比较简便,抗震性能好等;其不足是一般需在坝外设置施工导流和泄洪建筑物,且堆石坝在使用一定年限后,坝体会出现裂缝、渗漏、冲蚀破坏等问题,严重影响大坝的强度、稳定和耐久性。堆石坝应用广泛,如果出现问题后,就拆除,重新建造,成本很高,且建造周期长,给水利治理带来很大的难度。 The main body of the rockfill dam is a dam built with stone material and anti-seepage body; it is a kind of earth-rockfill dam. The advantage of this kind of dam is that it can make full use of local natural materials, can adapt to different geological conditions, the construction method is relatively simple, and has good seismic performance. After the dam has been used for a certain period of time, problems such as cracks, leakage, and erosion damage will appear in the dam body, which will seriously affect the strength, stability and durability of the dam. Rockfill dams are widely used. If a problem occurs, it will be dismantled and rebuilt. The cost is very high, and the construction period is long, which brings great difficulty to water conservancy management.
且农村小水电站挡水建筑物多为均质土坝,运行多年,土坝出现裂缝、渗漏、冲蚀破坏等问题,严重影响大坝的强度、稳定和耐久性,影响农村小水电工程效益的发挥与安全性。因此,需对均质土坝进行坝体防渗、防冲蚀处理和除险加固改造。 In addition, most of the water retaining structures of rural small hydropower stations are homogeneous earth dams. After many years of operation, problems such as cracks, leakage, and erosion damage in earth dams have seriously affected the strength, stability, and durability of dams, and affected the benefits of rural small hydropower projects. performance and safety. Therefore, it is necessary to carry out anti-seepage, anti-erosion treatment and reinforcement reconstruction for homogeneous earth dams.
农村小水电站挡水建筑物多为均质土坝,运行多年,土坝出现裂缝、渗漏、冲蚀破坏等问题,严重影响大坝的强度、稳定和耐久性,影响农村小水电工程效益的发挥与安全性。因此,需对均质土坝进行坝体防渗及防冲蚀处理以便提高标准和除险加固改造。 Most of the water retaining structures of rural small hydropower stations are homogeneous earth dams, which have been in operation for many years. Problems such as cracks, leakage, and erosion damage have occurred in earth dams, which seriously affect the strength, stability and durability of dams, and affect the benefits of rural small hydropower projects. Play with security. Therefore, it is necessary to carry out anti-seepage and anti-erosion treatment on the homogeneous earth dam in order to improve the standard and strengthen the reconstruction.
发明内容 Contents of the invention
为了解决上述存在的问题,本发明公开了以旧坝为基础建立的过水胶凝堆石坝及其施工方法,其具体技术方案如下: In order to solve the above-mentioned existing problems, the present invention discloses a cemented rockfill dam built on the basis of the old dam and its construction method, and its specific technical scheme is as follows:
以旧坝为基础建立的过水胶凝堆石坝,包括旧坝,其特征是所述旧坝表面从内到外依次铺设有胶凝砂砾石坝层和堆石混凝土包裹层。 The over-water cemented rockfill dam built on the basis of the old dam, including the old dam, is characterized in that the surface of the old dam is successively laid with a cemented sand gravel dam layer and a rockfill concrete wrapping layer from the inside to the outside.
所述堆石混凝土包裹层的防渗系数为1.025 ×10-8cm/s ~2.087 ×10-8cm/s。 The anti-seepage coefficient of the rockfill concrete wrapping layer is 1.025×10 -8 cm/s to 2.087×10 -8 cm/s.
所述胶凝砂砾石坝层的厚度需为胶凝砂砾石料最大粒径的3倍以上。 The thickness of the cemented sand and gravel dam layer needs to be more than 3 times the maximum particle size of the cemented sand and gravel material.
所述胶凝砂砾石坝层的外边坡比为1:0.6~1:0.8,所述堆石混凝土包裹层外边坡可为1:0.2至1:0。 The outer slope ratio of the cemented sand and gravel dam layer is 1:0.6 to 1:0.8, and the outer slope ratio of the rockfill concrete wrapping layer may be 1:0.2 to 1:0.
以旧坝为基础建立的过水胶凝堆石坝的施工方法,包括旧坝上、下游表面的施工方法和顶部的施工方法,其特征是所述旧坝上、下游表面的施工方法包括以下步骤: The construction method of the water cemented rockfill dam built on the basis of the old dam, including the construction method of the upper and lower reaches of the old dam and the construction method of the top, is characterized in that the construction method of the upper and lower reaches of the old dam includes the following step:
(1)清理仓面:对旧坝表面进行清理; (1) Clean up the surface of the warehouse: clean up the surface of the old dam;
(2)搭建上游模板和下游模板:在旧坝的上游侧和下游侧外对应设立上游模板和下游模板,所述上游模板和下游模板均向着旧坝倾斜; (2) Build upstream formwork and downstream formwork: set up upstream formwork and downstream formwork correspondingly outside the upstream and downstream sides of the old dam, and both the upstream formwork and downstream formwork are inclined towards the old dam;
(3)堆石:按照设计要求在旧坝上、下游表面预留胶凝砂砾石坝层所需宽度,在靠近上游模板和下游模板的位置由挖掘机或者吊车用满足要求的堆石料进行堆石; (3) Rockfill: According to the design requirements, the required width of the cemented sand and gravel dam layer is reserved on the upper and lower surfaces of the old dam, and the rockfill materials that meet the requirements are stacked by excavators or cranes near the upstream formwork and downstream formwork. stone;
(4)填筑胶凝砂砾石料:在堆石料与旧坝上、下游表面之间填充胶凝砂砾石料,形成旧坝上、下游表面的胶凝砂砾石坝层; (4) Filling of cemented sand and gravel material: fill the cemented sand and gravel material between the rockfill material and the upstream and downstream surfaces of the old dam to form the cemented sand and gravel dam layer on the upstream and downstream surfaces of the old dam;
(5)浇筑自密性混凝土:在步骤(4)形成的胶凝砂砾石坝层与旧坝等高时,在上游模板、下游模板与对应的胶凝砂砾石坝层之间进行自密性混凝土的浇筑,自密性混凝土填充在堆石料之间的缝隙中,形成堆石混凝土,构成旧坝上、下游表面的堆石混凝土包裹层; (5) Pouring self-sealing concrete: When the cemented sand and gravel dam formed in step (4) is at the same height as the old dam, self-sealing is carried out between the upstream formwork, the downstream formwork and the corresponding cemented sand and gravel dam. Concrete pouring, self-tightening concrete is filled in the gaps between rockfill materials to form rockfill concrete, which constitutes the rockfill concrete wrapping layer on the upper and downstream surfaces of the old dam;
所述旧坝顶部的施工方法包括以下步骤: The construction method at the top of the old dam comprises the following steps:
(a)堆高旧坝的坝顶:旧坝的坝顶的两侧用堆石料堆石,并用自密性混凝土进行浇筑,旧坝的坝顶两侧的堆石之间用胶凝砂砾石料填筑; (a) Heighten the crest of the old dam: use rockfill material on both sides of the crest of the old dam, and pour it with self-tight concrete, and use cemented sand and gravel between the rockfills on both sides of the crest of the old dam fill;
(b)堆石坝顶:当步骤(a)达到设计对应的高度,停止填筑胶凝砂砾石料,在上游模板和下游模板之间用堆石料堆石; (b) Rockfill dam crest: When step (a) reaches the corresponding design height, stop filling cemented sand and gravel materials, and use rockfill materials between the upstream formwork and downstream formwork;
(c)浇筑坝顶自密性混凝土:在步骤(b)所得的坝顶的堆石上浇筑自密性混凝土,混凝土进入到堆石的缝隙中,形成堆石混凝土,构成坝顶的堆石混凝土包裹层; (c) Pouring self-tightening concrete on the dam crest: pouring self-tightening concrete on the rockfill of the dam crest obtained in step (b), and the concrete enters into the gap of the rockfill to form rockfill concrete, which constitutes the rockfill concrete on the dam crest wrapping layer;
(d)拆除上游模板和下游模板。 (d) Removal of the upstream and downstream templates.
所述旧坝上、下游表面的施工方法步骤(4)中,胶凝砂砾石料在浇筑过程中不断地振捣,胶凝砂砾石料部分挤入旧坝表面缝隙和堆石料的缝隙中。 In the step (4) of the construction method on the upper and lower surfaces of the old dam, the cemented sand and gravel material is continuously vibrated during the pouring process, and the cemented sand and gravel material is partially squeezed into the gaps on the surface of the old dam and the gaps between the rockfill materials.
所述步骤(5)所形成的堆石混凝土抗压强度达到2.5Mpa,才能进行步骤(6)。 The step (6) can only be performed when the compressive strength of the rockfill concrete formed in the step (5) reaches 2.5Mpa.
堆石混凝土(RFC),即将大粒径的堆石直接入仓,然后浇筑专用自密性混凝土,填充堆石料空隙,形成堆石混凝土。堆石混凝土采用当地堆石作为骨料,减少水泥用量,节省成本,施工速度快,可有效降低混凝土的水化热,具有工艺简单,施工环节少,可作为均质土坝坝体防渗材料及防冲蚀材料。 Rockfill concrete (RFC) is to put large-sized rockfill directly into the warehouse, and then pour special self-sealing concrete to fill the gaps in the rockfill material to form rockfill concrete. Rockfill concrete uses local rockfill as aggregate, which reduces the amount of cement, saves costs, and has a fast construction speed, which can effectively reduce the heat of hydration of concrete. It has the advantages of simple process and few construction links, and can be used as an anti-seepage material for homogeneous earth dams and anti-erosion materials.
胶凝砂砾石料(CSG)是将坝址附近易于得到的河床砂砾石或者开挖弃渣等材料中加入水和胶凝材料,然后用简易的设备进行拌和,得到一种筑坝材料。该材料筑坝具有胶凝材料用量少,造价低,水化热温升低;充分利用开挖弃渣、河床砂砾石,简化制备工序,降低成本,减少对环境的污染,可作为均质土坝坝体防冲蚀材料。由于坝体要求不过水且普通胶凝砂砾石料(CSG)抗渗性能稍差,因此用普通胶凝砂砾石料(CSG)作为坝体材料时需在其上下游面采取额外的防渗措施。 Consolidated sand and gravel (CSG) is a kind of dam building material obtained by adding water and cementitious materials to materials such as riverbed sand and gravel or excavation waste that are easily available near the dam site, and then mixed with simple equipment. The dam construction of this material has the advantages of less cement material consumption, low cost, and low hydration heat temperature rise; making full use of excavation waste slag and riverbed sand and gravel, simplifying the preparation process, reducing costs, and reducing environmental pollution can be used as a homogeneous Anti-erosion material for earth dam body. Since the dam body is required to be impermeable and the anti-seepage performance of common cemented sand and gravel (CSG) is slightly poor, it is necessary to take additional anti-seepage measures on its upstream and downstream surfaces when common cemented sand and gravel (CSG) is used as the dam body material.
本发明基于胶凝砂砾石料(CSG)和堆石混凝土(RFC)两种筑坝材料优缺点,提出一种旧坝上建立的胶凝砂砾石混合过水坝及其施工方法。本发明的方法为采用堆石混凝土和胶凝砂砾石与已有的旧坝进行联合筑坝,在靠近旧坝部分进行胶凝砂砾石料填筑,最外层浇筑堆石混凝土,可同时发挥两种材料的优点。 Based on the advantages and disadvantages of cemented sand and gravel (CSG) and rockfill concrete (RFC) two dam materials, the present invention proposes a cemented sand and gravel mixed dam built on an old dam and its construction method. The method of the present invention is to use rockfill concrete and gelled sand and gravel to jointly build the dam with the existing old dam, fill the part close to the old dam with gelled sand and gravel, and pour the rockfill concrete on the outermost layer, which can play both roles simultaneously. advantages of the material.
本发明专利具有以下优点: The invention patent has the following advantages:
1.本发明是在旧坝上进行加固,较重建新坝减少工程量。 1. The present invention is to reinforce on the old dam, which reduces the amount of work compared with rebuilding a new dam.
2.本发明能进行水位高于坝顶的洪水过水调节。 2. The present invention can carry out flood water regulation with water level higher than the dam crest.
3.本发明所述的堆石混凝土和胶凝砂砾石料均采用当地材料降低成本,且能减少对环境的污染。 3. Both the rockfill concrete and the gelled sand and gravel materials of the present invention use local materials to reduce costs and reduce environmental pollution.
4.本发明实现了堆石混凝土和胶凝砂砾石料在旧坝基础上快速施工,省去上游面布置防渗面板的工序,简化施工、缩短工期。 4. The invention realizes rapid construction of rockfill concrete and cemented sand and gravel materials on the foundation of the old dam, saves the process of arranging anti-seepage panels on the upstream surface, simplifies construction, and shortens the construction period.
附图说明 Description of drawings
图1是本发明的结构示意图, Fig. 1 is a structural representation of the present invention,
图2是本发明的堆石和填筑胶凝砂砾石料的状态示意图, Fig. 2 is the state schematic diagram of rockfill of the present invention and the cemented sand gravel material of filling,
图3是本发明浇筑自密性混凝土后的状态示意图, Fig. 3 is the state schematic diagram after pouring self-tightness concrete of the present invention,
图4是本发明完成旧坝顶部施工的状态示意图, Fig. 4 is the state schematic diagram that the present invention completes the old dam top construction,
附图标记列表:1—旧坝,2—胶凝砂砾石坝层,3—堆石混凝土包裹层,4—上游模板,5—下游模板,6—堆石料,7—胶凝砂砾石料,8—自密性混凝土。 List of reference signs: 1—old dam, 2—cemented sand and gravel dam layer, 3—rockfill concrete wrapping layer, 4—upstream formwork, 5—downstream formwork, 6—rockfill material, 7—cemented sand and gravel material, 8 - Self-sealing concrete.
具体实施方式 detailed description
下面结合附图和具体实施方式,进一步阐明本发明。应理解下述具体实施方式仅用于说明本发明而不用于限制本发明的范围。需要说明的是,这些附图均为简化的示意图,仅以示意方式说明本发明的基本结构,因此其仅显示与本发明有关的构成。 The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention but not to limit the scope of the present invention. It should be noted that these drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the present invention, so they only show the configurations related to the present invention.
图1是本发明的结构示意图,结合附图可见,本以旧坝1为基础建立的过水胶凝堆石坝,包括旧坝1,所述旧坝1表面从内到外依次铺设有胶凝砂砾石坝层2和堆石混凝土包裹层3。所述堆石混凝土包裹层3的防渗系数为1.025 ×10-8cm/s ~2.087 ×10-8cm/s。堆石混凝土包裹层3的密实性好,能阻挡水分浸湿到本发明的内部,保护本发明,延长寿命。 Fig. 1 is a schematic structural view of the present invention, as can be seen in conjunction with the accompanying drawings, this water gelled rockfill dam built on the basis of the old dam 1 includes the old dam 1, and the surface of the old dam 1 is laid with glue successively from the inside to the outside. Concrete gravel dam layer 2 and rockfill concrete wrapping layer 3. The anti-seepage coefficient of the rockfill concrete wrapping layer 3 is 1.025×10 -8 cm/s to 2.087×10 -8 cm/s. The compactness of the rockfill concrete wrapping layer 3 is good, which can prevent moisture from soaking into the interior of the present invention, protect the present invention and prolong the service life.
所述胶凝砂砾石坝层2的厚度需为胶凝砂砾石料7最大粒径的3倍以上。确保胶凝砂砾石坝层2内部不会存在与胶凝砂砾石坝层2厚度不匹配大小的间隙,胶凝砂砾石坝层2的任意横截面均相对密实。 The thickness of the cemented sand and gravel dam layer 2 needs to be more than 3 times the maximum particle size of the cemented sand and gravel material 7 . It is ensured that there will be no gap of a size that does not match the thickness of the cemented sand and gravel dam layer 2 inside the cemented sand and gravel dam layer 2, and that any cross section of the cemented sand and gravel dam layer 2 is relatively dense.
所述胶凝砂砾石坝层2的外边坡比为1:0.6~1:0.8,所述堆石混凝土包裹层3外边坡可为1:0.2至1:0。 The outer slope ratio of the cemented sand and gravel dam layer 2 is 1:0.6 to 1:0.8, and the outer slope ratio of the rockfill concrete wrapping layer 3 may be 1:0.2 to 1:0.
以旧坝1为基础建立的过水胶凝堆石坝的施工方法,包括旧坝1上、下游表面的施工方法和顶部的施工方法,其特征是所述旧坝1上、下游表面的施工方法包括以下步骤: The construction method of the water cemented rockfill dam based on the old dam 1, including the construction method of the upper and lower reaches of the old dam 1 and the construction method of the top, is characterized in that the construction of the upper and lower reaches of the old dam 1 The method includes the following steps:
(1)清理仓面:对旧坝1表面进行清理; (1) Clean up the surface of the warehouse: clean up the surface of the old dam 1;
(2)搭建上游模板4和下游模板5:在旧坝1的上游侧和下游侧外对应设立上游模板4和下游模板5,所述上游模板4和下游模板5均向着旧坝1倾斜; (2) Build the upstream formwork 4 and the downstream formwork 5: set up the upstream formwork 4 and the downstream formwork 5 outside the upstream and downstream sides of the old dam 1, and both the upstream formwork 4 and the downstream formwork 5 are inclined towards the old dam 1;
(3)堆石:按照设计要求在旧坝1上、下游表面预留胶凝砂砾石坝层2所需宽度,在靠近上游模板4和下游模板5的位置由挖掘机或者吊车用满足要求的堆石料6进行堆石; (3) Rockfill: Reserve the required width of the cemented sand and gravel dam layer 2 on the upper and lower surfaces of the old dam 1 according to the design requirements, and use excavators or cranes to meet the requirements at positions close to the upstream formwork 4 and downstream formwork 5 Rockfill material 6 for rockfilling;
(4)填筑胶凝砂砾石料7:在堆石料6与旧坝1上、下游表面之间填充胶凝砂砾石料7,形成旧坝1上、下游表面的胶凝砂砾石坝层2; (4) Filling the cemented sand and gravel material 7: filling the cemented sand and gravel material 7 between the rockfill material 6 and the upstream and downstream surfaces of the old dam 1 to form the cemented sand and gravel dam layer 2 on the upstream and downstream surfaces of the old dam 1;
(5)浇筑自密性混凝土8:在步骤(4)形成的胶凝砂砾石坝层2与旧坝1等高时,在上游模板4、下游模板5与对应的胶凝砂砾石坝层2之间进行自密性混凝土8的浇筑,自密性混凝土8填充在堆石料6之间的缝隙中,形成堆石混凝土,构成旧坝1上、下游表面的堆石混凝土包裹层3; (5) Pouring self-sealing concrete 8: When the cemented sand and gravel dam layer 2 formed in step (4) is at the same height as the old dam 1, the upstream formwork 4, downstream formwork 5 and the corresponding cemented sand and gravel dam layer 2 The self-tightness concrete 8 is poured between them, and the self-tightness concrete 8 is filled in the gap between the rockfill materials 6 to form rockfill concrete, which constitutes the rockfill concrete wrapping layer 3 on the upper and lower reaches of the old dam 1;
所述旧坝1顶部的施工方法包括以下步骤: The construction method at the top of the old dam 1 comprises the following steps:
(a)堆高旧坝1的坝顶:旧坝1的坝顶的两侧用堆石料6堆石,并用自密性混凝土8进行浇筑,旧坝1的坝顶两侧的堆石之间用胶凝砂砾石料7填筑; (a) Heighten the crest of the old dam 1: use rockfill material 6 on both sides of the crest of the old dam 1, and use self-tight concrete 8 for pouring, between the rockfills on both sides of the crest of the old dam 1 Fill with cemented sand and gravel material 7;
(b)堆石坝顶:当步骤(a)达到设计对应的高度,停止填筑胶凝砂砾石料7,在上游模板4和下游模板5之间用堆石料6堆石; (b) Rockfill dam crest: When step (a) reaches the corresponding design height, stop filling the cemented sand and gravel material 7, and use rockfill material 6 between the upstream formwork 4 and the downstream formwork 5;
(c)浇筑坝顶自密性混凝土8:在步骤(b)所得的坝顶的堆石上浇筑自密性混凝土8,混凝土进入到堆石的缝隙中,形成堆石混凝土,构成坝顶的堆石混凝土包裹层3; (c) Pouring self-tightening concrete 8 on the dam crest: pouring self-tightening concrete 8 on the rockfill of the dam crest obtained in step (b), the concrete enters into the gaps in the rockfill to form rockfill concrete, which forms the pile of the dam crest stone concrete cladding 3;
(d)拆除上游模板4和下游模板5。 (d) Removal of upstream template 4 and downstream template 5.
所述旧坝1上、下游表面的施工方法步骤(4)中,胶凝砂砾石料7在浇筑过程中不断地振捣,胶凝砂砾石料7部分挤入旧坝1表面缝隙和堆石料6的缝隙中。 In the step (4) of the construction method on the upper and lower surfaces of the old dam 1, the cemented sand and gravel material 7 is continuously vibrated during the pouring process, and the cemented sand and gravel material 7 is partially squeezed into the gaps on the surface of the old dam 1 and the rockfill material 6 in the crevice.
所述步骤(5)所形成的堆石混凝土抗压强度达到2.5Mpa,才能进行步骤(6)。 The step (6) can only be performed when the compressive strength of the rockfill concrete formed in the step (5) reaches 2.5Mpa.
本发明,通过在堆石料6中填充自密性混凝土8,起到防渗的作用,简化施工,位于旧坝1表面的胶凝砂砾石坝层2,渗透较差,28天龄期的强度为4Mpa左右,为普通砂砾石料的3倍左右,在本发明中主要作为加固材料;本发明的过水胶凝堆石坝的高度根据施工的地理环境确定合理的高度。 In the present invention, by filling the rockfill material 6 with self-sealing concrete 8, it plays the role of anti-seepage and simplifies the construction. The cemented sand and gravel dam layer 2 located on the surface of the old dam 1 has poor penetration and has a strength of 28 days. It is about 4Mpa, about 3 times that of common sand and gravel, and it is mainly used as reinforcement material in the present invention; the height of the water-concrete rockfill dam of the present invention determines a reasonable height according to the geographical environment of construction.
本发明方案所公开的技术手段不仅限于上述技术手段所公开的技术手段,还包括由以上技术特征任意组合所组成的技术方案。 The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of any combination of the above technical features.
以上述依据本发明的理想实施例为启示,通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定其技术性范围。 Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510045483.1A CN104652371B (en) | 2015-01-29 | 2015-01-29 | The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510045483.1A CN104652371B (en) | 2015-01-29 | 2015-01-29 | The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104652371A CN104652371A (en) | 2015-05-27 |
CN104652371B true CN104652371B (en) | 2016-08-17 |
Family
ID=53243966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510045483.1A Active CN104652371B (en) | 2015-01-29 | 2015-01-29 | The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104652371B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104929081A (en) * | 2015-06-10 | 2015-09-23 | 北京华石纳固科技有限公司 | Enrockment concrete permeable dike and construction method thereof |
CN107700435B (en) * | 2017-09-30 | 2019-11-22 | 清华大学 | Rock-fill concrete core wall cemented rock-fill dam and its construction method |
CN110130278B (en) * | 2019-05-29 | 2020-02-21 | 中国水利水电科学研究院 | A kind of construction method of cemented dam |
CN110468794A (en) * | 2019-07-24 | 2019-11-19 | 南通大学 | A kind of novel ecological permeable dike and its construction method |
CN112962537A (en) * | 2021-03-08 | 2021-06-15 | 中国水电基础局有限公司 | Integrated pouring method for self-compacting rock-fill concrete dam body |
CN113897912B (en) * | 2021-10-16 | 2022-07-26 | 浙江钱塘江水利建筑工程有限公司 | Rock-fill concrete masonry structure and construction method thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3627072B2 (en) * | 1995-07-06 | 2005-03-09 | 栄三 青木 | Raise the levee body. Fill dam that can be expanded |
CN101935995B (en) * | 2010-08-18 | 2012-02-08 | 清华大学 | Rockfill concrete and cemented sand and gravel composite dam and its design and construction method |
CN102505667A (en) * | 2011-09-29 | 2012-06-20 | 中国水利水电科学研究院 | Cemented gravel dam |
CN104110012A (en) * | 2014-07-28 | 2014-10-22 | 中国电建集团西北勘测设计研究院有限公司 | Low-permeability rock-fill material concrete panel rock-fill dam |
-
2015
- 2015-01-29 CN CN201510045483.1A patent/CN104652371B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN104652371A (en) | 2015-05-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104652371B (en) | The glue of crossing set up based on old dam coagulates rock-fill dams and construction method thereof | |
CN100451245C (en) | Method for constructing normal piled concrete | |
CN101718086B (en) | A concrete-rockfill hybrid dam and its construction method | |
CN107700435B (en) | Rock-fill concrete core wall cemented rock-fill dam and its construction method | |
CN108411802A (en) | A kind of underwater method for repairing pile foundation and scour hole | |
CN101974894B (en) | Combined dam | |
CN103643656A (en) | High rock-fill dam membrane anti-seepage body on deep coverage layer and construction method of high rock-fill dam membrane anti-seepage body | |
CN101935995B (en) | Rockfill concrete and cemented sand and gravel composite dam and its design and construction method | |
CN105297685B (en) | Base concrete panel rock-fill dam and construction method thereof | |
CN103556639B (en) | Construction method for underwater non-dispersible cement-based self-compaction material | |
CN102852121A (en) | Artificial composite foundation for building clay core rock-fill dam on deep overburden and construction method for artificial composite foundation | |
WO2013117089A1 (en) | Semi-assembled ecotype debris dam for mudflow and construction method thereof | |
CN108018830A (en) | A kind of gravity type cemented gravel dam and its construction method | |
CN103741651B (en) | A kind of concrete teeth groove stiling basin and construction method thereof | |
CN205576857U (en) | Be suitable for hydraulic and hydroelectric engineering's super high enrockment dam structure | |
CN205387692U (en) | Dam body and river course drop | |
CN110218101A (en) | A kind of cement base silt light road foundation building block, structure and construction method | |
CN108439867A (en) | Using the rock-fill dams and its construction method of seamless panel | |
CN202673299U (en) | Double-layer mold constructing composite lining supporting structure of weak surrounding rock tunnel | |
CN110172979B (en) | Roller compacted concrete damming method | |
CN104652372A (en) | Upstream-oriented seepage-proofing and crack-resisting roller-compacted concrete gravity dam | |
CN114892607B (en) | Assembled dam core wall structure and construction method thereof | |
CN110512571B (en) | Roller compacted concrete dam containing rock-fill concrete core wall and construction method thereof | |
CN109944215A (en) | A kind of wave-absorbing slope protection structure of earth-rock dam reinforcement engineering | |
CN214656782U (en) | An artificial lake bottom anti-seepage structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |