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数値解析Numerical Analysis

河川、砂防、社会インフラの維持管理や防災・減災等に役に立つ各種数値解析を実施します。

数値計算プログラムの開発から、既存プログラムのカスタマイズ・改良、計算モデルの構築、シミュレーション計算の実施、GUI・CUIアプリケーション開発まで、幅広いご要望に対応可能です。

We perform various kinds of numerical analysis useful for maintenance and management of rivers, erosion control, and social infrastructure, as well as for disaster prevention and disaster mitigation.

We can respond to a wide range of requests from the development of numerical calculation programs, customization and improvement of existing programs, construction of calculation models, implementation of simulation calculations, and GUI/CUI application development.

水文・水理・土砂生産流出解析 Hydrology, hydraulics and sediment production runoff analysis

  • 各種流域・河道モデルの構築、再現計算・シミュレーション計算の実行、計算結果の可視化
  • 水文解析：降雨浸透流出解析、確率統計分析、洪水予測、洪水氾濫解析など
  • 水理解析：1次元・2次元流れの不等流・不定流計算など
  • 水・土砂解析：土砂生産流出解析、河床変動解析、土石流解析など
  • Development of various basin and river channel models, execution of replication and simulation calculations, and visualization of calculation results
  • Hydrological analysis: rainfall infiltration and runoff analysis, stochastic statistical analysis, flood forecasting, flood inundation analysis, etc.
  • Hydraulic analysis: calculation of inequalities and indefinite flows in 1D and 2D flows
  • Water and Sediment Analysis: Sediment Production Runoff Analysis, Riverbed Fluctuation Analysis, Sediment Flow Analysis, etc.

斜面安定解析 Slope stability analysis

  • 1次元、2次元、3次元斜面安定解析モデルの構築・計算・可視化
  • 広域斜面における危険すべり面やすべり体の捜索計算
  • 降雨浸透流出や土石流氾濫解析との連携解析
  • 斜面単位の自動抽出、安全率の確率分布に基づく安全度評価
  • 土砂災害警戒情報の判定基準雨量（CL）の設定・見直し・検証
  • Construction, calculation and visualization of 1D, 2D and 3D slope stability analysis models
  • Search calculation for hazardous slippery surfaces and slippery bodies on a wide area slope
  • Coupled analysis with rainfall infiltration runoff and sediment flow inundation analysis
  • Automatic extraction of slope units and evaluation of safety based on the probability distribution of safety rates
  • Establishing, reviewing and verifying the criteria for determining rainfall (CL) for landslide warning information

斜面単位の分割 Division of the slope unit

3Dモデルによる斜面崩壊危険度の評価及び危険すべり体の抽出 Evaluation of Slope Failure Risk and Extraction of Dangerous Sliding Bodies by 3D Model

3次元斜面安定解析システムの開発 Development of a 3D slope stability analysis system

その他の開発実績 Other Development Results

  • 熱収支法による積雪・融雪過程の長期シミュレーション計算
  • ダムの流入量・放流量予測、ダム操作シミュレーション
  • 天文潮位予測
  • 距離減衰式による地震動計算　など
  • Long-Term Simulation of Snow Accumulation and Melting Process Using Heat Balance Method
  • Dam inflow and discharge forecasts, dam operation simulations
  • Prediction of Astronomical Tide Level
  • Calculation of earthquake ground motion using the distance decay method, etc.

熱収支法による積雪・融雪過程の長期シミュレーション計算：積雪深計算結果 Long-Term Simulation of Snow Accumulation and Melting Process Using Heat Balance Method: Results of Snow Accumulation Depth Calculation

積雪・融雪考慮の有無による水位予測結果の比較
（青：考慮無、赤：考慮有） Comparison of water level predictions with and without consideration of snow accumulation and snowmelt
(Blue: not considered, Red: considered)