WO2022016603A1 - 一种水电站新型截流及围堰坝体以及坝体施工方法 - Google Patents

一种水电站新型截流及围堰坝体以及坝体施工方法 Download PDF

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Publication number
WO2022016603A1
WO2022016603A1 PCT/CN2020/106534 CN2020106534W WO2022016603A1 WO 2022016603 A1 WO2022016603 A1 WO 2022016603A1 CN 2020106534 W CN2020106534 W CN 2020106534W WO 2022016603 A1 WO2022016603 A1 WO 2022016603A1
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concrete
frame
dam
caisson
dam body
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PCT/CN2020/106534
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English (en)
French (fr)
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桂林生
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桂林生
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Priority to ZA2021/09318A priority Critical patent/ZA202109318B/en
Publication of WO2022016603A1 publication Critical patent/WO2022016603A1/zh

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B7/00Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B5/00Artificial water canals, e.g. irrigation canals
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B8/00Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B9/00Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00Caissons; Construction or placing of caissons
    • E02D23/08Lowering or sinking caissons
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

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  • the invention relates to the technical field of water conservancy construction, in particular to a novel closure and cofferdam dam body of a hydropower station and a dam body construction method.
  • the present application proposes a novel interception and cofferdam dam body of a hydropower station and a construction method thereof.
  • the purpose of the present invention is to propose a new type of closure and cofferdam dam body and a dam body construction method for a hydropower station in order to solve the defects existing in the prior art.
  • a new type of closure and cofferdam dam body for a hydropower station is characterized in that it includes a concrete frame dam body, concrete dams are arranged on both sides of the concrete frame dam body, and a metal coil frame is arranged on the upstream side of the concrete frame dam body.
  • the roll sheet frame is provided with a rubber roll sheet, the roll sheet frame includes a metal frame, a cylindrical floating body under the roll sheet, three fixed rods and three fixed ropes, the cylindrical floating body is fixedly connected to one end of the roll sheet, the The other end of the roll sheet is fixedly installed on the lower part of the metal frame, and the roll sheet is rolled on the side of the cylindrical floating body to form a cylindrical structure together. It is fixed under the frame with a fixed rope.
  • the fixed rope is fixed under the metal frame, and the other end is inserted into the frame.
  • the square hole is opened on the metal frame above the cylindrical structure, the part of the fixing rope inserted into the square hole is provided with a plug, and the plug is provided with a through hole matched with the fixing rod, and the fixing rod is from top to bottom. Insert into the metal frame in a vertical state.
  • a construction method for a new type of closure of a hydropower station and a cofferdam dam body characterized in that it comprises the following steps:
  • the caisson construction method comprises the following steps:
  • the water sinks in the caisson shaft wall and partition wall, and the segments are connected to height until the caisson is implanted, and concrete is poured in the caisson shaft wall and partition wall;
  • the pile After pumping water or filling the core in the well hole, the pile is driven in the reserved hole for driving the pile, and the concrete is poured in the through hole of the well wall and the pile driving hole;
  • the whole of the caisson is formed by splicing several sections of caisson in the vertical direction, and the upper and lower adjacent caissons are in a concave-convex fit; each section of the caisson is spliced by several well wall blocks.
  • the adjacent well wall blocks are in a concave-convex fit;
  • the caisson is rectangular, including four corner well wall blocks and four plane well wall blocks, and the flat well wall blocks are arranged on the adjacent well.
  • both sides of the corner well wall blocks are bumps or grooves
  • both sides of the flat well wall blocks are grooves or bumps, and the bumps and the The grooves are adapted to each other.
  • the caisson when pumping water or filling the core in the well hole, the caisson shall be cleaned and plugged, the bottom-sealing concrete shall be poured, and at the same time, the riprap shall be protected.
  • the composite foundation as the foundation of the bridge pier the water in the caisson is extracted, and the bottom-covering concrete is properly sealed; this construction step is to pump water or fill the core in the caisson, in order to offset or resist the load of the superstructure and realize the control of the foundation settlement.
  • the concrete is an underwater high-performance, micro-expansion, non-segregation concrete prepared on site.
  • the new dam body in the present invention replaces the stone blocking cofferdam in the prior art, reduces the capital investment, and greatly shortens the construction period. It is directly installed on the upstream side of the concrete frame dam body to realize the interception cofferdam; the coil frame and the remaining area of the concrete frame dam body are both independent structures, which can still be recycled after the construction is completed; the opening and closing parts of the coil frame are controlled. It is a fixed rod, and its structure is simple and easy to operate; the present invention realizes the function of controllable water blocking only by the cooperation of the floating body and the roll sheet.
  • FIG. 1 is a schematic diagram of the overall structure of a new type of interception and cofferdam dam body of a hydropower station proposed by the present invention, viewed from one side of the interception dam body;
  • FIG. 2 is a schematic diagram of the overall structure of a new type of interception of a hydropower station proposed by the present invention and a cofferdam dam body viewed from one side of the cofferdam dam body;
  • a new type of interception and cofferdam dam body of a hydropower station comprises a concrete frame dam body 1, a concrete attached dam 2 and a roll frame;
  • the roll-up frame includes a metal frame 31, the metal frame 31 is provided with a plurality of water passage holes, the water passage holes are rectangular (the water passage holes penetrate the metal frame), and are evenly arranged on the water-facing surface of the metal frame 31.
  • the metal frame 31 Edge protrusions are arranged on both sides (the cross section of the metal frame is H-shaped), the water-facing surface of the metal frame 31 is fixedly connected with a roll 32, one end of the roll 32 is fixedly connected with the metal frame 32, and the other end is fixedly connected with a floating body 33,
  • the floating body 33 is cylindrical, and the side surface is fixedly connected to one end of the roll sheet.
  • the height (axial height) of the cylindrical floating body 33 is the same as the width of the roll sheet 33.
  • the roll sheet material is synthetic rubber
  • the metal frame material is an alloy material. ;
  • the fixed end of the roll sheet 32 is arranged below the water passage hole, the roll sheet completely covers the water passage hole in the unfolded state, and fully exposes the water passage hole in the rolled up state.
  • the fixed end of the mat 32 is provided with a locking device.
  • the locking device includes a fixed rope 35 fixed under the roll and a fixed rod 36 penetrated into the metal frame from top to bottom.
  • One end of the fixed rope 35 is fixed, and the other end is provided with a
  • the plug inserted into the plug hole 34 in the metal frame 1, the plug has a recess or a through hole to match with one end of the fixing rod 36 to achieve locking;
  • the concrete frame dam body 1 is provided with a space for accommodating the metal frame 31, the upper end is provided with an opening that matches the metal frame 31, and the ends of the left and right sides in contact with the metal frame 31 are provided with a C that matches the edge protrusion of the metal frame 31.
  • the concrete attached dam 2 is a solid concrete column or a hollow concrete column.
  • One dam body is provided with four concrete attached dams 2, two of which are arranged in a group on both sides of the concrete frame dam body 1, and the concrete attached dam and the concrete frame dam body 1 are fixed. connect.
  • a construction method for a new type of closure and cofferdam dam body of a hydropower station comprising the following steps:
  • S5 Start the pumping pump 5 to pump out the water in the two adjacent dam bodies to provide a section of water-free area for the construction of large-scale hydropower stations.
  • the caisson construction technology includes: pre-embedding piles at the bottom of the river bed;
  • the concrete attached dam and the concrete frame dam body are assembled on the construction site to form a caisson structure, with four rectangular sections of the concrete attached dam and two sections of the C-shaped concrete frame dam body, and the caisson is on the shaft wall. There are vertical through holes evenly distributed, and connecting ribs are arranged in the through holes;
  • the water sinks in the caisson shaft wall and partition wall, and the segments are connected to height until the caisson is implanted, and concrete is poured in the caisson shaft wall and partition wall;
  • the pile After pumping water or filling the core in the well hole, the pile is driven in the reserved hole for driving the pile, and the concrete is poured in the through hole of the well wall and the pile driving hole;
  • the whole of the caisson is formed by splicing several sections of caisson in the vertical direction, and the upper and lower adjacent caissons are in a concave-convex fit; each section of the caisson is spliced by several well wall blocks.
  • the caisson is rectangular and includes four corner well wall blocks and four plane well wall blocks, and the flat well wall blocks are arranged on the adjacent turns. between the corner well wall blocks; both sides of the corner well wall block are bumps or grooves, both sides of the plane well wall block are grooves or bumps, and the bumps are connected to the concave blocks.
  • the grooves are adapted to each other.
  • the caisson when pumping water or filling the core in the well hole, the caisson shall be cleaned and plugged, the bottom-sealing concrete shall be poured, and at the same time, the riprap shall be protected.
  • the composite foundation as the foundation of the bridge pier the water in the caisson is extracted, and the bottom-covering concrete is properly sealed; this construction step is to pump water or fill the core in the caisson, in order to offset or resist the load of the superstructure and realize the control of the foundation settlement.
  • the concrete is an underwater high-performance, micro-expansion, non-segregation concrete prepared on site.

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  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
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  • Mining & Mineral Resources (AREA)
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Abstract

一种水电站新型截流及围堰坝体,包括混凝土框架坝体(1),所述混凝土框架坝体(1)两侧设置有混凝土附坝(2),所述混凝土框架坝体(1)内设置有卷席框架(3),所述卷席框架(3)包括金属框架(31),所述金属框架(31)设置有复数个的过水孔,金属框架(31)的迎水面固定连接有卷席(32),卷席(32)一端与金属框架(31)固定连接,另一端固定连接有浮体(33),所述金属框架(31)迎水面还设置卷席锁紧装置,所述锁紧装置在卷席(32)卷起状态下将卷席(32)固定,所述金属框架(31)还设置有锁紧装置开合的固定杆(36)。该坝体降低了资金的投入,极大的缩短了施工工期。

Description

一种水电站新型截流及围堰坝体以及坝体施工方法 技术领域
本发明涉及水利施工技术领域,尤其涉及一种水电站新型截流及围堰坝体以及坝体施工方法。
背景技术
传统水电站建筑中用人力、物力、车辆运送大量石块推进河流里进行单、双、戗堤立堵截流,截流后还进行江底混凝土帷幕灌浆防渗作业以及构造双层混凝土防渗墙,最后还需要将石块加高到设计防洪高度。(参考水利发电1984年第12期葛洲坝枢纽工程专号中第26页葛洲坝枢纽大江截流与围堰的设计和施工,及第30页围堰河床段标准剖面图)用石块截流后河水从先开挖好的导流渠流到下游,经过围堰外下游围堰同样用大量石块建成,并进行江底混凝土帷募灌浆防渗作业和双层防渗混泥土墙作业,在完成后抽干围堰中的水开始建筑水电站各项设备施工。现有技术中的施工方法缺点较多:施工周期长、截流围堰使用大量石块,使用人力、物力、车辆耗费大、投资大、防渗工作艰难。
为解决现有技术中的问题本申请提出一种水电站新型截流及围堰坝体以及其施工方法。
发明内容
本发明的目的是为了解决现有技术中存在的缺陷,而提出的一种水电站新型截流及围堰坝体以及坝体施工方法。
为了实现上述目的,本发明采用了如下技术方案:
一种水电站新型截流及围堰坝体,其特征在于,包括混凝土框架坝体,所述混凝土框架坝体两侧设置有混凝土附坝,所述混凝土框架坝体上游侧有金属卷席框架,所述卷席框架上设置有橡胶卷席,所述卷席框架包括金属框架,卷席下圆柱浮体,三根固定杆和三股固定绳,所述圆柱浮体固定连接于所述卷席的一端,所述卷席的另一端固定安装于所述金属框架的下部,卷席卷于圆柱浮体侧面,共同形成圆柱结构,转至框架下面用固定绳固定,所述固定绳一端固定在金属框架下边,另一端插入方孔内,所述方孔开设于圆柱结构上方的金属框架上,所述固定绳插入方孔内的部分设置有插头,插头设有与固定杆配合的贯穿孔,所述固定杆自上而下呈竖直状态的插入金属框架内。
一种水电站新型截流及围堰坝体的施工方法,其特征在于,包含以下步骤:
S1:用沉井施工方法把预制成型或现场制作的混凝土框架坝体和两侧的混凝土附坝,分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体和两侧的混凝土附坝形成整体结构,截断河流;
S2:在截流坝体下游,用沉井施工方法把预制成型或现场制作的混凝土框架坝体和两侧的混凝土附坝分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体和两侧的混凝土附坝形成整体结构,形成围堰结构;
S3:以上截流坝体和围堰坝体建成后在河流一侧开挖一条导流渠,从截流坝体旁开挖至超出围堰坝体之外,在围堰区内建造抽水泵, 并将卷席框架分别安装与截流坝混凝土框架坝体的上游侧和围堰坝混凝土框架坝体的下游侧;
S4:启动截流坝体中的卷席框架使浮体带动卷席将过水孔完全遮挡,受流水流动压力卷席展开后与金属框架完全贴合,河流被截断河水迅速上涨,河水流入导流渠中,围堰坝下游水面上涨,围堰坝中的浮体浮于水面使卷席贴于金属框架,形成阻流结构;
S5:启动抽水泵,将两相邻坝体中的水抽出,提供一段无水区域,进行大型水电站施工建筑。
进一步的,所述沉井施工方法包括以下步骤:
在河床底部预埋沉桩;
将混泥土附坝及混凝土框架坝体,在施工现场拼装构成沉井结构,四个截面为长方形的混泥土附坝,两截面为C型的混凝土框架坝体,所述沉井在井壁上设置有均匀分布的竖直贯穿孔,贯穿孔内设置有连接筋;
将所述沉井浮运到桥位设计位置处定位;
沉井井壁及隔墙中灌水下沉,节段接高,直到沉井着床,在沉井井壁及隔墙中浇筑混凝土;
浇筑沉井封底混凝土,在沉井外周进行抛石防护;
在井孔中抽水或填芯后,在沉桩预留孔中沉桩,在井壁贯穿孔以及沉桩孔内浇筑混凝土;
完成混凝土附坝及混凝土坝体框架的基础施工。
更进一步的,所述沉井的整体在竖直方向上由若干节沉井拼接而 成,上下相邻的所述沉井之间呈凹凸配合;每节所述沉井由若干井壁块拼接而成,相邻的所述井壁块之间呈凹凸配合;所述沉井呈矩形,包括四个转角井壁块以及四个平面井壁块,所述平面井壁块设置于相邻的转角井壁块之间;所述转角井壁块的两个侧面均为凸块或凹槽,所述平面井壁块的两个侧面均为凹槽或凸块,所述凸块与所述凹槽呈相互适配。
更进一步的,在井孔中抽水或填芯时,沉井内进行清基堵漏,浇筑封底混凝土,同时抛石防护,浇筑顶板对作为锚碇基础的复合基础,在沉井内抛设填芯,对作为桥墩基础的复合基础,抽取沉井内的水,并对封底混凝土做适当密封处理;该施工步骤对沉井内抽水或填芯,目的是抵消或抵抗上部结构荷载,实现基础沉降的控制。
更进一步的,所述混凝土为现场配制的水下高性能、微膨胀、不离析混凝土。
相比于现有技术,本发明的有益效果在于:
本发明中的新型坝体替代了现有技术中石块截流围堰,降低了资金的投入,极大的缩短了施工工期,本发明中的卷席框架可预先设置与混凝土框架坝体完成后直接安装在混凝土框架坝体的上游侧,实现截流围堰;卷席框架与混凝土框架坝体余留面积相等均为独立结构,在施工完成后仍可循环利用;控制卷席框架开合的部分为固定杆,其结构简单便于操作;本发明仅浮体与卷席的配合便实现了可控阻水的功能。
附图说明
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。
图1为本发明提出的一种水电站新型截流及围堰坝体由截流坝体一侧观察整体结构示意图;
图2为本发明提出的一种水电站新型截流及围堰坝体由围堰坝体一侧观察的整体结构示意图;
图3为本发明提出的卷席框架结构示意图。
图中:1、混凝土框架坝体;2、混凝土附坝;3、卷席框架;31、金属框架;32、卷席;33、浮体;34、插接孔;35、固定绳;36、固定杆;4、导流渠;5、抽水泵。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。
在本发明的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
参照图1-图3,一种水电站新型截流及围堰坝体,包括混凝土框 架坝体1、混凝土附坝2和卷席框架;
卷席框架包括金属框架31,金属框架31设置有复数个的过水孔,过水孔呈矩形(过水孔将金属框架贯穿),均匀的排布于金属框架31的迎水面,金属框架31两侧设置有边缘突起(使金属框架的横截面呈H型),金属框架31的迎水面固定连接有卷席32,卷席32一端与金属框架32固定连接,另一端固定连接有浮体33,浮体33为圆柱状,侧面与卷席的一端固定连接,圆柱浮体33的高度(轴向高度)与卷席33宽度相同,在本实施例中卷席材料为合成橡胶,金属框架材料为合金材料;
卷席32固定端设置于过水孔的下方,卷席在展开状态下将过水孔完全遮挡,在卷起状态下将过水孔完全展露,金属框架31迎水面还设置锁紧装置,卷席32固定的一端设置有锁紧装置,锁紧装置包括固定在卷席下方的固定绳35和自上而下穿入金属框架的固定杆36,固定绳35一端固定,另一端设置有能够与金属框架1中的插接孔34插接的插头,插头具有凹陷或通孔来与固定杆36的一端相匹配实现锁紧;
混凝土框架坝体1内设置有容纳金属框架31的空间,上端设置有与金属框架31相适配的开口,左右两侧与金属框架31接触的一端开设有与金属框架31边缘突起相配合的C型槽;混凝土框架坝体1与金属框架31下端面接触的部分设置凹陷,使金属框架嵌入混凝土坝体内;
混凝土附坝2为实心混凝土立柱或中空混凝土立柱,一个坝体设 置有四个混凝土附坝2,两个为一组设置于混凝土框架坝体1两侧,混凝土附坝与混凝土框架坝体1固定连接。
一种水电站新型截流及围堰坝体的施工方法,包含以下步骤:
S1:用沉井施工方法把预制成型或现场制作的混凝土框架坝体1和两侧的混凝土附坝2,分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体1和两侧的混凝土附坝2形成整体结构,形成截流坝体截断河流;
S2:在截流部分下游,用沉井施工方法把预制成型或现场制作的混凝土框架坝体1和两侧的混凝土附坝2分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体1和两侧的混凝土附坝2形成整体结构,形成围堰坝体;
S3:以上截流坝体和围堰坝体建成后在河流一侧开挖一条导流渠4,从截流坝体旁开挖至超出围堰坝体之外,在围堰区内建造抽水泵5,并将卷席框架通过吊装的方式分别安装与截流坝混凝土框架坝体1和围堰坝混凝土框架坝体1中;
S4:启动截流坝体上游侧的卷席框架使浮体33带动卷席32将过水孔完全遮挡,受流水流动压力卷席32展开后与金属框架31完全贴合,河流被截断河水迅速上涨,河水流入导流渠4中,围堰坝下游水面上涨,围堰坝中的浮33体浮于水面使卷席32贴于金属框架31,形成阻流结构;
S5:启动抽水泵5,将两相邻坝体中的水抽出,提供一段无水区 域,进行大型水电站施工建筑。
其中的沉井施工技术包括:在河床底部预埋沉桩;
将混泥土附坝及混凝土框架坝体,在施工现场拼装构成沉井结构,四个截面为长方形的混泥土附坝,两截面为C型的混凝土框架坝体,所述沉井在井壁上设置有均匀分布的竖直贯穿孔,贯穿孔内设置有连接筋;
将所述沉井浮运到桥位设计位置处定位;
沉井井壁及隔墙中灌水下沉,节段接高,直到沉井着床,在沉井井壁及隔墙中浇筑混凝土;
浇筑沉井封底混凝土,在沉井外周进行抛石防护;
在井孔中抽水或填芯后,在沉桩预留孔中沉桩,在井壁贯穿孔以及沉桩孔内浇筑混凝土;
完成混凝土附坝及混凝土坝体框架的基础施工。
进一步的,所述沉井的整体在竖直方向上由若干节沉井拼接而成,上下相邻的所述沉井之间呈凹凸配合;每节所述沉井由若干井壁块拼接而成,相邻的所述井壁块之间呈凹凸配合;所述沉井呈矩形,包括四个转角井壁块以及四个平面井壁块,所述平面井壁块设置于相邻的转角井壁块之间;所述转角井壁块的两个侧面均为凸块或凹槽,所述平面井壁块的两个侧面均为凹槽或凸块,所述凸块与所述凹槽呈相互适配。
更进一步的,在井孔中抽水或填芯时,沉井内进行清基堵漏,浇筑封底混凝土,同时抛石防护,浇筑顶板对作为锚碇基础的复合基础, 在沉井内抛设填芯,对作为桥墩基础的复合基础,抽取沉井内的水,并对封底混凝土做适当密封处理;该施工步骤对沉井内抽水或填芯,目的是抵消或抵抗上部结构荷载,实现基础沉降的控制。
更进一步的,所述混凝土为现场配制的水下高性能、微膨胀、不离析混凝土。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (6)

  1. 一种水电站新型截流及围堰坝体,其特征在于,包括混凝土框架坝体,所述混凝土框架坝体两侧设置有混凝土附坝,所述混凝土框架坝体内设置有卷席框架,所述卷席框架上设置有橡胶卷席,所述卷席框架包括金属框架,卷席下圆柱浮体,三根固定杆和三股固定绳,所述圆柱浮体固定连接于所述卷席的一端,所述卷席的另一端固定安装于所述金属框架的下部,卷席卷于圆柱浮体侧面,共同形成圆柱结构,转至框架下面用固定绳固定,所述固定绳一端固定在金属框架下边,另一端插入插接孔内,所述插接孔开设于圆柱结构上方的金属框架上,所述固定绳插入方孔内的部分设置有插头,插头设有与固定杆配合的贯穿孔,所述固定杆自上而下呈竖直状态的插入金属框架内。
  2. 一种水电站新型截流及围堰坝体的施工方法,其特征在于,包含以下步骤:
    S1:用沉井施工方法把预制成型或现场制作的混凝土框架坝体和两侧的混凝土附坝,分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体和两侧的混凝土附坝形成整体结构,截断河流;
    S2:在截流坝体下游,用沉井施工方法把预制成型或现场制作的混凝土框架坝体和两侧的混凝土附坝分别沉入至清除泥土沙石及风化岩层河床中,与岩层牢固相接并使混凝土框架坝体和两侧的混凝土附坝形成整体结构,形成围堰结 构;
    S3:以上截流坝体和围堰坝体建成后在河流一侧开挖一条导流渠,从截流坝体旁开挖至超出围堰坝体之外,在围堰区内建造抽水泵,并将卷席框架分别安装与截流坝混凝土框架坝体上游侧和围堰坝混凝土框架坝体下游侧;
    S4:启动截流坝体中的卷席框架使浮体带动卷席将过水孔完全遮挡,受流水流动压力卷席展开后与金属框架完全贴合,河流被截断河水迅速上涨,河水流入导流渠中,围堰坝下游水面上涨,围堰坝中的浮体浮于水面使卷席贴于金属框架,形成阻流结构;
    S5:启动抽水泵,将两相邻坝体中的水抽出,提供一段无水区域,进行大型水电站施工建筑。
  3. 根据权利要求2所述的一种水电站新型截流及围堰坝体的施工方法,所述沉井施工方法包括以下步骤:
    在河床底部预埋沉桩;将混泥土附坝及混凝土框架坝体,在施工现场拼装构成沉井结构,四个截面为长方形的混泥土附坝,两截面为C型的混凝土框架坝体,所述沉井在井壁上设置有均匀分布的竖直贯穿孔,贯穿孔内设置有连接筋;将所述沉井浮运到桥位设计位置处定位;沉井井壁及隔墙中灌水下沉,节段接高,直到沉井着床,在沉井井壁及隔墙中浇筑混凝土;浇筑沉井封底混凝土,在沉井外周进行抛 石防护;
    在井孔中抽水或填芯后,在沉桩预留孔中沉桩,在井壁贯穿孔以及沉桩孔内浇筑混凝土;
    完成混凝土附坝及混凝土坝体框架的基础施工。
  4. 根据权利要求3所述的一种水电站新型截流及围堰坝体的施工方法,其特征在于所述沉井的整体在竖直方向上由若干节沉井拼接而成,上下相邻的所述沉井之间呈凹凸配合;每节所述沉井由若干井壁块拼接而成,相邻的所述井壁块之间呈凹凸配合;所述沉井呈矩形,包括四个转角井壁块以及四个平面井壁块,所述平面井壁块设置于相邻的转角井壁块之间;所述转角井壁块的两个侧面均为凸块或凹槽,所述平面井壁块的两个侧面均为凹槽或凸块,所述凸块与所述凹槽呈相互适配。
  5. 根据权利要求4所述的一种水电站新型截流及围堰坝体的施工方法,其特征在于,在井孔中抽水或填芯时,沉井内进行清基堵漏,浇筑封底混凝土,同时抛石防护,浇筑顶板对作为锚碇基础的复合基础,在沉井内抛设填芯,对作为桥墩基础的复合基础,抽取沉井内的水,并对封底混凝土做适当密封处理;该施工步骤对沉井内抽水或填芯,目的是抵消或抵抗上部结构荷载,实现基础沉降的控制。
  6. 根据权利要求5所述的一种水电站新型截流及围堰坝体的施工方法,其特征在于,所述混凝土为现场配制的水下 高性能、微膨胀、不离析混凝土。
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114753389A (zh) * 2022-03-28 2022-07-15 南水北调(山东)机电维修有限责任公司 深水条件下渠道衬砌修复专用自沉式组合钢围堰
CN114809045A (zh) * 2022-05-24 2022-07-29 四川省水利电力工程局有限公司 一种水电站厂房围堰结构及其施工方法
CN115369977A (zh) * 2022-07-27 2022-11-22 中国十七冶集团有限公司 新建大直径排水管道与现有排水主管道交叉的敷设工艺
CN115506312A (zh) * 2022-09-27 2022-12-23 中国电建集团成都勘测设计研究院有限公司 峡谷河道水利枢纽导流建筑物布置方法
CN117230819A (zh) * 2023-07-27 2023-12-15 中国水利水电第三工程局有限公司 分期围堰导流工况下水电站厂房基坑及其尾水渠施工方法
CN117328410A (zh) * 2023-09-07 2024-01-02 北京城建道桥建设集团有限公司 一种低开挖量且施工快速的拦蓄坝施工方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113136839B (zh) * 2021-04-06 2022-10-18 河北省水利水电勘测设计研究院 一种水坝施工自动化系统及方法
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CN116988429B (zh) * 2023-09-26 2023-11-28 中交第一航务工程局有限公司 一种河道岸坡生态防护结构及清淤方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203365A1 (de) * 1972-01-25 1973-08-09 Anton Stemmer Verfahren und vorrichtung zur wasserhaltung bei wasserbauten in fliessenden gewaessern
CN1272572A (zh) * 2000-04-14 2000-11-08 北京市水利工程基础处理总队 重力式钢架防渗膜围堰及其施工方法
CN203361102U (zh) * 2013-06-06 2013-12-25 徐晨光 浮动出水堰门
KR101421459B1 (ko) * 2013-07-01 2014-07-23 주식회사 준별에프알피산업 배수갑문 보수방법
CN106560560A (zh) * 2016-05-16 2017-04-12 桂林生 卷席截流水电站建筑的方法
CN207160039U (zh) * 2017-06-06 2018-03-30 洛阳城市建设勘察设计院有限公司 一种榫卯装配式预应力沉井
CN108755731A (zh) * 2018-07-18 2018-11-06 中国电建集团中南勘测设计研究院有限公司 一种沉井基础及构建方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101962958B (zh) * 2009-07-22 2013-01-30 中交公路规划设计院有限公司 一种沉井与桩组成的桥梁复合基础及施工方法
CN102296573A (zh) * 2011-05-24 2011-12-28 中国科学院水利部成都山地灾害与环境研究所 一种框架式泥石流拦砂坝及其施工方法
JP5903877B2 (ja) * 2011-12-21 2016-04-13 株式会社大林組 ダム堤体の仮締切工法
CN102900058B (zh) * 2012-11-12 2015-01-07 中国水电顾问集团华东勘测设计研究院 一种宽河床坝式水电站导流施工方法
KR101705945B1 (ko) * 2014-08-18 2017-02-13 주식회사 케이씨씨건설 수중 가물막이 시공방법
CN109371918B (zh) * 2018-11-27 2023-07-25 中国电建集团华东勘测设计研究院有限公司 具有永临结合多功能排水箱涵的大坝结构及其施工方法
CN210459257U (zh) * 2019-08-20 2020-05-05 中建协和建设有限公司 一种预制装配式沉井

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2203365A1 (de) * 1972-01-25 1973-08-09 Anton Stemmer Verfahren und vorrichtung zur wasserhaltung bei wasserbauten in fliessenden gewaessern
CN1272572A (zh) * 2000-04-14 2000-11-08 北京市水利工程基础处理总队 重力式钢架防渗膜围堰及其施工方法
CN203361102U (zh) * 2013-06-06 2013-12-25 徐晨光 浮动出水堰门
KR101421459B1 (ko) * 2013-07-01 2014-07-23 주식회사 준별에프알피산업 배수갑문 보수방법
CN106560560A (zh) * 2016-05-16 2017-04-12 桂林生 卷席截流水电站建筑的方法
CN207160039U (zh) * 2017-06-06 2018-03-30 洛阳城市建设勘察设计院有限公司 一种榫卯装配式预应力沉井
CN108755731A (zh) * 2018-07-18 2018-11-06 中国电建集团中南勘测设计研究院有限公司 一种沉井基础及构建方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114753389A (zh) * 2022-03-28 2022-07-15 南水北调(山东)机电维修有限责任公司 深水条件下渠道衬砌修复专用自沉式组合钢围堰
CN114753389B (zh) * 2022-03-28 2023-11-28 南水北调(山东)机电维修有限责任公司 深水条件下渠道衬砌修复专用自沉式组合钢围堰
CN114809045A (zh) * 2022-05-24 2022-07-29 四川省水利电力工程局有限公司 一种水电站厂房围堰结构及其施工方法
CN115369977A (zh) * 2022-07-27 2022-11-22 中国十七冶集团有限公司 新建大直径排水管道与现有排水主管道交叉的敷设工艺
CN115506312A (zh) * 2022-09-27 2022-12-23 中国电建集团成都勘测设计研究院有限公司 峡谷河道水利枢纽导流建筑物布置方法
CN117230819A (zh) * 2023-07-27 2023-12-15 中国水利水电第三工程局有限公司 分期围堰导流工况下水电站厂房基坑及其尾水渠施工方法
CN117328410A (zh) * 2023-09-07 2024-01-02 北京城建道桥建设集团有限公司 一种低开挖量且施工快速的拦蓄坝施工方法
CN117328410B (zh) * 2023-09-07 2024-04-23 北京城建道桥建设集团有限公司 一种低开挖量且施工快速的拦蓄坝施工方法

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