首页> 外文期刊>砂防学会誌 >台湾における鋼製透過型砂防堰堤の土石流捕捉効果に関するー考察
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台湾における鋼製透過型砂防堰堤の土石流捕捉効果に関するー考察

机译:对台湾输钢型sabo大坝泥石流截流效果的思考

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摘要

台湾では,土石流の発生の危険性が高く,下流域に保全対象を有する土石流危険渓流は,2012年現在で約1,660渓流あるとされており,砂防·治山堰堤を含む渓流保全施設が,毎年100施設程度整備されている。ここで,設置されている堰堤を見ると,その多くは不透過型のコンクリート堰堤やスリット状の開口部を有するコンクリートスリット堰堤である。%In Taiwan, there are over 1,600 debris flow prone torrents, and various sediment-related disaster prevention facilities have been installed on these torrents in the mountain areas. However, most of them are closed-type concrete Sabo dams and open-type steel Sabo dams are rare. One of the reasons is that their effect or effectiveness has not been duly recognized by Taiwan's authorities. Therefore, we installed a full-scale test piece (Open-type steel Sabo dam) on the Landow torrent in Huisun forest, National Chung Hsing University, in order to verify its debris flow capture effect. On July 13, 2013, the seventh typhoon of the season (Typhoon Soulik) struck northern Taiwan and made substantial debris flow occur in this torrent. The installed open-type steel Sabo dam also got buried under the enormous amount of sediment and gravel following the debris flow, but significantly reduced the impact of debris flow and protected the downstream bridge. This paper describes the consideration on debris flow capture effect of open-type steel Sabo dam, by analyzing the debris flow capturing and depositing process and capture form based on the monitoring camera data and field survey. From the monitoring camera data, we recognized that this dam got buried because the sediment trap capacity exceeded due to the continuous sediment flowing down even after the capturing of debris flow and subsequent flow, leading to subsequent sediment and gravel being deposited to downstream by flowing over the dam, but not because boulders and sediments passed between the members. In addition, it was also confirmed by the field survey that the opening of open-type steel Sabo dam got closed up by arched stacking efficiency between boulders to capture debris flow.
机译:在台湾,泥石流的风险很高,截至2012年,下游约有1,660条泥石流危险流需要养护,并且每年有100座山流养护设施,包括防蚀和防洪大坝。设施得到维护。纵观已安装的水坝,其中大多数是不透水的混凝土水坝或带有缝隙形开口的混凝土裂缝水坝。 %在台湾,有1600多处易发生泥石流的洪流,山区已经在这些洪流上安装了各种与泥沙有关的防灾设施,但其中大多数是封闭式混凝土Sabo水坝和开放式钢Sabo水坝。大坝很少见,原因之一是它们的作用或有效性尚未得到台湾当局的认可,因此我们在美国国立惠顺森林的朗道洪流上安装了一个全尺寸试件(敞开式钢制Sabo大坝)。为了验证其对泥石流的捕获效果,中兴大学.2013年7月13日,该季节的第七个台风(台风Soulik)袭击了台湾北部,使洪流中产生了大量泥石流。在泥石流之后,大坝也被埋在大量的沉积物和砾石下,但显着减少了泥石流的影响并保护了下游桥梁。根据监控摄像机的数据和现场调查,通过分析泥石流的捕获和沉积过程以及捕获形式,对开放式萨博钢水坝的ebris流量捕获效果进行了研究。由于即使在捕获泥石流和随后的水流之后,连续的沉积物向下流,仍超过了捕集能力,导致随后的沉积物和砾石通过流过大坝而沉积到下游,但这不是因为巨石和沉积物在构件之间通过。 ,还通过现场调查证实,敞开式Sabo钢坝的开口由于巨石之间的拱形堆积效率而被封闭,以捕获泥石流。

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  • 来源
    《砂防学会誌》 |2014年第3期|36-42|共7页
  • 作者单位

    日鐵住金建材株式会社;

    台湾國立中興大学水土保持學系;

    台湾國立中興大学水土保持學系;

    台湾國立中興大学水土保持學系;

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