CN203144974U - 用于高土石围堰的固稳结构 - Google Patents

用于高土石围堰的固稳结构 Download PDF

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CN203144974U
CN203144974U CN 201320137320 CN201320137320U CN203144974U CN 203144974 U CN203144974 U CN 203144974U CN 201320137320 CN201320137320 CN 201320137320 CN 201320137320 U CN201320137320 U CN 201320137320U CN 203144974 U CN203144974 U CN 203144974U
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cofferdam
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earth
earth material
layer
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王仁坤
郑家祥
黎昀
唐朝阳
冯菊
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PowerChina Chengdu Engineering Co Ltd
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Chengdu Hydroelectric Investigation and Design Institute of China Hydropower Engineering Consulting Group
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Abstract

本实用新型公开了一种用于高土石围堰的固稳结构,尤其是适用于大流量深厚覆盖层河道的高土石围堰。本实用新型提供了一种用于高土石围堰的固稳结构,包括围堰体,还包括防渗土料层和堰脚压重体,所述防渗土料层按一定的坡度铺设在所述围堰体的上游堰坡上,所述堰脚压重体设置在所述防渗土料层的底部。由于采用了防渗土料层和堰脚压重体,防渗土料层选用合适的抗剪强度可以有效的抵御水位变化,再加上堰脚压重体能够有效的稳固围堰体的底层,使得边坡稳固可靠,在防渗土料层和堰脚压重体的作用下,整个高土石围堰无需再进行边坡放缓,因此可以减少工程量。在边坡的表面还可以设置干砌块石层,使得边坡的表面得到防护,避免表面受损。

Description

用于高土石围堰的固稳结构
技术领域
本实用新型涉及一种用于高土石围堰的固稳结构,尤其适用于大流量深厚覆盖层河道的高土石围堰。
背景技术
在水利水电工程建设中,对于大流量深厚覆盖层河道,一般采用高土石围堰保障大坝干地施工,高土石围堰边坡一般相对水工土石坝较陡,上游边坡由于受河道来流量的影响,水位变幅大,甚至存在陡涨陡落,边坡稳定问题突出。常规方法将围堰边坡放缓,但是边坡放缓必然极大的增加了整个高土石围堰的体积,其工程量显著的增大,需要花费大量的成本和工时。
实用新型内容
本实用新型所要解决的技术问题是提供一种成本较低的用于高土石围堰的固稳结构。
本实用新型解决其技术问题所采用的用于高土石围堰的固稳结构,包括围堰体,还包括防渗土料层和堰脚压重体,所述防渗土料层按一定的坡度铺设在所述围堰体的上游堰坡上,所述堰脚压重体设置在所述防渗土料层的底部。
进一步的是,还包括干砌块石层,所述干砌块石层的底部铺设在所述堰脚压重体上,干砌块石层的上部铺设在所述防渗土料层上。
进一步的是,所述干砌块石层与所述防渗土料层之间设置有围堰材料填充层。
进一步的是,在横截面上,所述防渗土料层的宽度由低向高逐渐减小。
进一步的是,所述堰脚压重体的顶部设置有水平的平台。
本实用新型的有益效果是:由于采用了防渗土料层和堰脚压重体,防渗土料层选用合适的抗剪强度可以有效的抵御水位变化,再加上堰脚压重体能够有效的稳固围堰体的底层,使得边坡稳固可靠,在防渗土料层和堰脚压重体的作用下,整个高土石围堰无需再进行边坡放缓,因此可以减少工程量。在边坡的表面还可以设置干砌块石层,使得边坡的表面得到防护,避免表面受损。
附图说明
图1是本实用新型的示意图;
图中零部件、部位及编号:围堰体1、防渗土料层2、堰脚压重体3、干砌块石层4。
具体实施方式
下面结合附图对本实用新型作进一步说明。
如图1所示,本实用新型包括围堰体1,还包括防渗土料层2和堰脚压重体3,所述防渗土料层2按一定的坡度铺设在所述围堰体1的上游堰坡上,所述堰脚压重体3设置在所述防渗土料层2的底部。防渗土料层2应具有所需的抗剪强度,整个围堰体1并不需要进行边坡放缓,防渗土料层2选用合适的抗剪强度有利于结构稳定,干砌块石层4可以有效的抵御水位变化,再加上堰脚压重体3能够有效的稳固围堰体的底层,使得边坡稳固可靠。防渗土料层2的坡度一般小于围堰体1的上游堰坡0~20度即可。
具体的,如图1所示,还包括干砌块石层4,所述的底部铺设在所述堰脚压重体3上,干砌块石层4的上部铺设在所述防渗土料层2上。所述干砌块石层4与所述防渗土料层2之间设置有围堰材料填充层。围堰材料填充层的材料与围堰体1一样,干砌块石层4可以防护堰脚压重体3以及防渗土料层2的表面。
如图1所示,在横截面上,所述防渗土料层2的宽度由低向高逐渐减小。
如图1所示,所述堰脚压重体3的顶部设置有水平的平台。
上述结构在施工时,首先确定合理的防渗土料层2抗剪强度,并通过试验,对防渗土料层2进行优选或处理,选择符合要求的防渗土料层2;然后在围堰体1上游堰坡堰面铺设50~100cm厚的干砌块石层4;最后在上游堰坡堰脚堆筑堰脚压重体3。

Claims (5)

1.用于高土石围堰的固稳结构,包括围堰体(1),其特征在于:还包括防渗土料层(2)和堰脚压重体(3),所述防渗土料层(2)按一定的坡度铺设在所述围堰体(1)的上游堰坡上,所述堰脚压重体(3)设置在所述防渗土料层(2)的底部。
2.如权利要求1所述的用于高土石围堰的固稳结构,其特征在于:还包括干砌块石层(4),所述干砌块石层(4)的底部铺设在所述堰脚压重体(3)上,干砌块石层(4)的上部铺设在所述防渗土料层(2)上。
3.如权利要求2所述的用于高土石围堰的固稳结构,其特征在于:所述干砌块石层(4)与所述防渗土料层(2)之间设置有围堰材料填充层。
4.如权利要求1所述的用于高土石围堰的固稳结构,其特征在于:在横截面上,所述防渗土料层(2)的宽度由低向高逐渐减小。
5.如权利要求1至4任一权利要求所述的用于高土石围堰的固稳结构,其特征在于:所述堰脚压重体(3)的顶部设置有水平的平台。
CN 201320137320 2013-03-25 2013-03-25 用于高土石围堰的固稳结构 Expired - Lifetime CN203144974U (zh)

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Granted publication date: 20130821