Evaluation of the functions of a grid-type sabo dam and sediment routing management in a basin

网格型萨博坝的功能评价及流域泥沙演进管理

• 批准号: 11650525
• 负责人: NAKAGAWA Hajime
• 金额: $ 2.24万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650525/
• 关键词: sabo dam; sediment management; grid-type; reservoir; sedimentation; blocking model; simulation; evaluation of functions; 堆砂; 土石流; 透過型; 土石流扞止機能; 機能回復; 地形変動

Recently, many grid-type sabo dams have been constructed. These dams have functions to pass through sediment transported during normal floods and to store hazardous big boulders transported by a debris flow. In this study, firstly, we pay attention to the sedimentation processes of debris flow by a grid-type sabo dam, and flume experiments and numerical simulations are carried out using stochastic model of blocking by a planer grid-type dam. The model is expanded into the three-dimensional model and processes of the debris flow generation, development and sedimentation by a grid-type sabo dam are expressed by the model. This model is found to be very useful to clarify the function of the grid-type sabo dam. Secondary, by using this simulation model, the method to find the optimal site of the grid-type sabo dam along the steep channel is investigated. By using both the calculated flow characteristics such as solid concentration of the debris flow, flow depth, composition of the sediment diameter in the flow, flow velocity, and etc. and stochastic model of blocking we can evaluate the suitable position of the dam construction. As we checked this method only in the imaginary channel, we want to apply it to the actual river basin in future.

近年来，许多格构式的沙波坝已经建成。这些水坝的功能是通过正常洪水期间运送的沉积物，并储存泥石流运送的危险大石块。本文首先研究了沙坝型泥石流的淤积过程，并采用平面沙坝型泥石流阻塞随机模型进行了水槽试验和数值模拟。将该模型扩展为三维模型，并用该模型表达了格网式沙堡坝泥石流的生成、发展和淤积过程。该模型对阐明格构式沙堡坝的作用是非常有用的。其次，利用该仿真模型，研究了沿着陡槽格构式沙坝最优坝位的确定方法。利用计算得到的泥石流固相浓度、流深、水流中泥沙粒径组成、流速等水流特征和阻塞随机模型，可以评价建坝的合适位置。由于我们仅在假想的河道中检验了该方法，因此我们希望将来将其应用于实际流域。

项目成果

高橋 保, 井上素行, 中川 一, 里深好文: "山岳流域からの土砂流出モデルを用いた貯水池堆砂の予測"水工学論文集. 45. 841-846 (2001)

Tamots Takahashi、Motoyuki Inoue、Hajime Nakakawa、Yoshifumi Satobuka：“使用山区盆地沉积物径流模型预测水库沉积”水利工程学报 45. 841-846 (2001)。

高橋保, 中川一, 里深好文: "貯水池逆流システムによるフラッシング排砂"土木学会水理委員会水工学論文集. 46巻. 785-790 (2002)

Tamots Takahashi、Hajime Nakakawa、Yoshifumi Satobuka：“使用水库回流系统冲洗沉积物”日本土木工程师学会水利工程委员会会议记录第 46 卷 785-790（2002 年）。

T. Takahashi, H. Nakagawa and Y. Satofuka: "Prediction of resevoir sedimentation and development of reduction system for the sedimentation"Annuals, DPRI, Kyoto Univ.. No.44 B-2. 193-206 (2001)

T. Takahashi、H. Nakakawa 和 Y. Satofuka：“水库沉积的预测和沉积还原系统的开发”年鉴，DPRI，京都大学。No.44 B-2。

T. Takahashi, H. Nakagawa, Y. Satofuka and H. Wang: "Simulation of debris flow control by a grid-type sabo dam"Annual Journal of Hydraulic Engineering JSCE. Vol.46. 689-694 (2002)

T. Takahashi、H. Nakakawa、Y. Satofuka 和 H. Wang：“网格型萨博坝泥石流控制模拟”水利工程学年刊 JSCE。

高橋保,中川一,里深好文,王浩民: "格子型砂防ダムの閉塞モデル"水工学論文集. 45. 703-708 (2001)

Tamots Takahashi、Hajime Nakakawa、Yoshifumi Satoshi、王浩民：“格子型侵蚀控制坝的合流模型”水利工程学报 45. 703-708 (2001)。