横断工作物を活用した砂州の擾乱と河岸侵食防止に関する検討

横断工作物を活用した砂州の擾乱と河岸侵食防止に関する検討

第12回土砂災害に関するシンポジウム論文集

第12回土砂災害に関するシンポジウム論文集


Effect of Initial Water Condition and Material Cohesivity on Embankment Erosion

第12回土砂災害に関するシンポジウム論文集

第12回土砂災害に関するシンポジウム論文集


STUDY ON THE IMPROVEMENT OF FLOOD MITIGATION FUNCTIONS OF FOREST BY CHANGING NEEDLELEAF FOREST TO NEEDLELEAF-BROADLEAF MIXED FOREST

人工林の針広混交林化による 森林の洪水低減機能向上に関する研究

In this study, we examined the effects of the enhanced interception evaporation rate and surface roughness expected from changing needleleaf forest to needleleaf-broadleaf on flood mitigation functions. By conducting hydrological observations in the Hashimoto forestry area, which is a mixed forest of needle and broadleaf, the obtained interception evaporation rate and surface roughness were adapted to Nagayasuguchi dam and runoff simulation was conducted. We used a tank model for the spill simulation, which was evaluated in terms of peak flow rate and generation time. As a result, increasing the surface roughness reduced the peak flow rate by 6.1% relative to the 100 year Probabilistic rainfall, and increasing the interception evaporation rate reduced it by 3.6%.Therefore It was confirmed that this is an important function in flood reduction.

大流域における人工林の針広混交林化により期待される遮断蒸発率と地表面粗度の増強が森林の洪水低減機能にどれほど影響を与えるかを検討した．針広混交林を形成する一級河川那賀川流域の橋本林業地において水文観測を行うことで得られた遮断蒸発率と地表面粗度を長安口ダム流域に適用し，洪水シミュレーションを行った．ピーク流量やその発生時間等で洪水低減機能の向上具合を評価した．その結果，現地の将来予測100年確率雨量に対する洪水ピーク流量は，地表面粗度の増強により6.1%，遮断蒸発の増強によって3.6%の減少が推定された．

Journal of Japan Society of Civil Engineers, Series B1 (Hydraulic Engineering)

土木学会論文集B1(水工学)


西谷川および熊野川谷川流域における降水と流砂量の関係性

西谷川および熊野川谷川流域における降水と流砂量の関係性

Journal of Japan Society of Civil Engineers, Ser. F6 (Safety Problem)

土木学会論文集F6(安全問題)


FLOOD CONTROL FUNCTION OF FARMLAND AS GREEN INFRASTRUCTURE USING INUNDATION ANALYSIS MODEL

内水氾濫解析を用いたグリーンインフラの有する洪水調節機能に関する検討

土木学会論文集B1(水工学)


FUNDAMENTAL STUDY ON WATER STORAGE FUNCTION OF ABANDONED PADDY FIELD ON SMALL RIVER FLOODPLAIN

普通河川周辺の耕作放棄水田が有する洪水一時貯留機能に関する基礎的検討

土木学会論文集B1(水工学)


IMPROVEMENT OF FLOOD REDUCTION FUNCTION OF FORESTED BASIN BY REINFORCEMENT OF EVAPORATION RATE AND GOUUND ROUGHNESS

遮断蒸発率と地表面粗度の増強による森林の洪水低減機能の早期向上に関する検討

Two forest operation techniques with an flood peak reduction effect were discussed using a tank-model and two small artificial forested basins where forest physiognomy was different. One operation was the way to strengthen the insulation evaporative rate by changing its physiognomy, other was the way to make forest floor vegetation and ground roughness increased. The effect when artificial cedar forest was replaced with a mixed conifer-hardwood forest was discussed. As a result, it was estimated that the flood peak flow decreased around 20% before the replacement.

流域治水における活用を念頭に，遮断蒸発率と地表面抵抗の増強による森林の洪水低減機能の向上について洪水ピーク流量の視点から検討した．徳島県内に位置する2つの林地(一斉植林・皆伐型施業のスギ人工林，弱間伐・択伐型施業のスギ・ヒノキを中心とする針広混交複層林)を対象に水文観測を実施し，地表面流分離直列二段タンクモデルと将来予測降雨を用いた流出シミュレーションを実施した．遮断蒸発率と地表面抵抗の洪水ピークの流量低減と遅延効果について検討した結果，対象としたスギ人工林を針広混交複層林・弱間伐に変更すると20%程度の洪水ピーク流量低減効果を得られる可能性が示唆された．

土木学会論文集B1(水工学)


治水経済調査から算定される内水被害額に応じたグループ分割による保険の給付・徴収に対する不平等性の低減

土木学会論文集F6(安全問題)


A Numerical Study of the Complex Flow Structure in a Compound Meandering Channel


Reliability Analysis of River Bridge against Scours and Earthquakes

This study proposes a bridge safety evaluation process against seismic and flood hazards. Because uncertainties in the scours, seismic hazard, and structural performance for a given seismic excitation are inevitable and important, reliability analysis is adopted. A scour prediction equation for a bridge with a complicated foundation system is developed and a probabilistic scour curve is constructed to measure the risk of scours using the Monte Carlo simulation. The seismic hazard is measured using the probabilistic seismic-hazard analysis. A series of nonlinear time-history analyses are performed to determine the structural performance under different peak-ground-acceleration values. SAP2000 is used to build the finite-element model wherein the soil is modeled using a bilinear link. A plastic hinge is predefined to simulate the nonlinear behaviors of the pier and caisson of the bridge. The displacement ductility is used to measure the structural performance and to construct the fragility curve for various limit states. The Nanyun Bridge located in central Taiwan is selected as an example to demonstrate the proposed safety-evaluation procedure. The results show that the probable scour depth of the Nanyun bridge is from 3 to 5 m. The failure probability considering the floods and earthquakes is insignificant. A deterministic design value, considering both the hazards, is provided for a given reliability target (e.g., β=3) to help engineers in their present design processes.

Journal of Performance of Constructed Facilities


AN ESTIMATION METHOD OF THE FLOOD DEPTH DISTRIBUTION OF WIDE AREA USING THE OPEN DATA MAINTAINED BY THE WHOLE COUNTRY SCALE IN JAPAN

全国規模で整備されているオープンデータを用いて 広域かつ詳細な浸水深分布を作成する内水解析モデル

A simplified inundation estimation method was developed capable of applying to a rather wide area such as 50 km x 45 km. The method calculates inundation depths by combining use of a quasi linear storage model and a 2-D ground flow model, and then the results are distributed onto a details-scale ground altitude model utilizing the open data available from Japanese ministries. The method showed a good reproduction for the flood by typhoon 1411 Halong in the downstream catchments of the Yoshino and Katuura Rivers, the eastern part of Tokushima, Japan.

本研究では，全国規模で整備されているオープンデータを用いて，広域かつ詳細な浸水深分布を得ることを目指して，内水 氾濫解析モデルを構築する．平成 26 年台風 11 号を対象とし，徳島県東部県土整備局の管轄領域 ( 50km×45km ) において 地表面モデルのみで解析を行う．この地表面モデルは，準線形貯留型モデルを用い，流末に到達した流量を算定し，その流 量分を地表面モデルの湛水量から差し引く機能を追加した．堤内に残った湛水量から得られた浸水深分布を，それより狭い領 域メッシュの地盤標高モデルに反映させることにより，詳細な浸水深分布を得る．これにより求めた計算水位と平成 26 年台風 11 号時の観測水位とを比較し，内水解析モデルが田の冠水，家屋の浸水の判別ができることを検証した．

土木学会論文集B1(水工学)


Proceedings of the 37th IAHR World Congress


Scour depth evaluation of a bridge with a complex pier foundation


ESTIMATION OF SEDIMENTARY LAYER THICKNESS USING SUB BOTTOM PROFILER AND CHARACTERISTICES OF THE FLOW AND BED TOPOGRAPHY AT NARROW SEGMENT OF THE YOSHINO RIVER

吉野川岩津狭窄部におけるサブボトムプロファイラーを用いた堆積砂層厚の面的把握と洪水時の流況・河床変動特性

In order to determine the maximum depth to be scoured during flooding at the narrow segment at the Iwadu point of the Yoshino River in Japan, we conducted a study to measure the thickness of the sediment layer using a narrow multi-beam and a sub-bottom profiler. The sub-bottom profiler detected a consolidated silt layer at a depth of approximately 10 m below the riverbed. Results from a boring survey conducted at three different points for verification, found that the N value changed sharply at this layer, where estimates indicated the deepest riverbed level historically recorded. In addition, it was nearly the same value with the calculated bed level during the largest discharge condition in the past by the quasi-three dimensional flow analysis.


粗い領域メッシュにスプライン補間を適用して詳細な浸水深分布を作成する手法

粗い領域メッシュにスプライン補間を適用して詳細な浸水深分布を作成する手法

Journal of Japan Society of Civil Engineers, Series B1 (Hydraulic Engineering)

土木学会論文集B1(水工学)


DEEP-SEATED LANDSLIDE FEATURES USING ESTIMATED GROUND WATER STORAGE, SLOPE LENGTH AND INCLINATION

タンクモデルで推定した地中水量と斜面長・勾配に基づく深層崩壊発生斜面の特徴

Proceedings of the 8th Symposium on Sediment-Related Disasters

第8回土砂災害に関するシンポジウム論文集


A probabilistic bridge safety evaluation against floods


AN INUNDATION INSIDE THE LEVEE ANALYTICAL METHOD THAT CONSIDERED THE BASE FLOW OF THE DRAINAGE CANAL

都市郊外部における 排水路基底流量を考慮した内水氾濫解析

An inundation inside the levee analytical method that considered the base-flow of the drainage canal was considered for the suburban area where the mountainous district and the field were contained, and the drainage-canal flowed. The base-flow is presumed from the unsteady flow calculation using the water-levels data of the drainage-canal observed at low-water, and applied to an inundation inside the levee model. The analytical method of the present study was applied to inundation inside the levee in Nishisuga region in Tokushima city that had been generated by Typhoon No.11 in 2014. The following results were achieved. (1)The water-levels in drainage-canal could be reproduced when it was flooded. (2)The runoff-coefficient presumed by the analytical modeling and the runoff-coefficient calculated from material concerning the land-uses were roughly corresponding. (3)The ratio of the base-flow at the flood peak was estimated to be about 50%. The importance of the evaluation of the base-flow was suggested.

土木学会論文集B1(水工学)


DEVELOPMENT OF DISASTER MANAGEMENT ACTION PLAN TO PROMOTE RAPID AND SAFE EVACUATION BEHAVIER OF RESIDENTS

迅速で安全な住民避難行動を促進する「防災行動計画」の策定

Improvement of disaster prevention facility for a flood is necessary long time and a large amount of budget. The minimization of flood damage is incomplete without enhancement of soft measures in addition to hard measures. The serious flood damage due to Typhoon No.1411 has occurred in Naka town, Tokushima Prefecture. We analyzed the relationships between the disaster information providing by administration and evacuation of residents. Based on the results, we have developed the disaster management action plan which is called ``Timeline'' of government and residents.

浸水被害をハード整備で防ぐには膨大な時間と経費を要するため，整備途上でも被害の最小化を図るソフト対策の充実が喫緊の課題である．本研究は2014年8月に那賀町で発生した水害時の行政と住民の対応を検証する．また，過去の那賀川における出水状況を踏まえ，はん濫発生と水位や上流のダムからの放流量の相関関係等を検証するとともに，行政が発信する災害関連情報の種類や伝達方法，住民の避難完了までに必要な時間等も検討する．その結果，住民の避難等が適正に実施されるよう，災害発生前の行政や住民の対応を時系列に沿って「いつ，だれが，何をする」を明確にした「防災行動計画」を提案する．

Journal of Japan Society of Civil Engineers, Ser. F6 (Safety Problem)

土木学会論文集F6(安全問題)


Flood damage and restoration at a school and a day-care center by the typhoon No12 and No.11 of 2014

2014年台風12号・11号による学校・保育所での浸水被害と復旧対応

The risk management in the heavy rain disaster which occurs frequently in recent years becomes the urgent problem. Flood damage has occurred in a wide area in Kochi Prefecture and in Tokushima Prefecuture by the typhoon No.12 and No. 11 of 2014. Emergency restoration for business continuity were performed at the school or the day-care center which received a flood damage. We were conducted the interview survey for staff of the school or the day-care centers affected by a heavy rain disaster about the disaster situation and the response of post-disaster. Most facilities received the support of the administration, the guardian and the volunteer, and had restarted the business at the early stage.

2014年8月に相次いで来襲した台風12号と同11号では高知県と徳島県では8月1日から10日の間に多いところで2000mmを超える降雨量を記録し，各地で河川氾濫や内水被害が頻発した．その結果，両県で複数の小中学校や保育所で床上浸水被害や浸水に伴う断水が発生し，早期復旧に向けた対応が行われた．近年，教育機関や保育所が浸水被害を受ける事例が頻発しており，これらの施設での豪雨時の避難確保計画の作成や早期に復旧するための対策の実施が必要となっている．そこで，両県で被災した学校と保育所の被災実態についてインタビュー調査を実施し，各施設での被害の特徴と応急対応について検討した．

土木学会論文集F6(安全問題)


海水浴場における防災対策と管理体制に関する研究

海水浴場における防災対策と管理体制に関する研究

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

土木学会論文集B3(海洋開発)


漁業者から見た吉野川下流域におけるアユの産卵場と河道変遷の関係

漁業者から見た吉野川下流域におけるアユの産卵場と河道変遷の関係

Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

土木学会論文集G(環境)


Appropriate way of business continuity for nursery school due to heavy rain disaster

豪雨災害を対象とした保育所の業務継続のあり方

Advancement of the safety management is required in the nursery school which must carry out both nursing and education. The risk management in the heavy rain disaster which occurs frequently in recent years becomes the urgent problem. We were conducted the interview survey for staff of the nursery schools affected by a heavy rain disaster during 2011 and 2013 about the disaster situation of a nursery school and the response of post-disaster. From the analysis of the interviewed contents, the essential points of the safety management of children and nursing staff were summarized, and the problems for resuming nursing business quickly were shown.

養護と教育を一体的に実現することを責務とする保育所では家庭や学校以上に安全管理の高度化が求められている．近年，頻発する集中豪雨時のリスクマネジメントは保育所にとって喫緊の課題となっている．2011年から2013年までに発生した豪雨による保育所の被災状況と保育を再開するまでの取り組みについて保育所職員を対象としてインタビュー調査を実施した．インタビューで得られた内容を分析した結果，豪雨災害時の保育所での児童・職員の安全管理の点では避難を開始する水位の合理的決定や職員の緊急参集時の安全確保で問題があることや保育業務を早期に再開するための業務継続計画の策定が進んでいない状況など多くの課題が抽出された．

土木学会論文集F6(安全問題)


FACTOR ANALYSIS OF SANDBAR DEFOMATION PROCESSES IN THE MIDDLE REACHES OF YOSHINO RIVER

吉野川中流域における砂州地形の長期的変化に及ぼす要因分析

The Yoshino River, Japan, is rich in water resources, but simultaneously possesses high risk of flood disaster. River improvement works to reduce damage from the floods have been conducted which attain increase of the discharge capacity. On the other hand, local sediment deposition and scouring are growing concern by the repeated floods, decreasing of sediment supply and construction of river structure. In order to resolve these problems, it is necessary to understand the effects of natural and artificial impacts on the river channel. In this paper, the channel transition processes were studied in the Middle Yoshino River using aerial photo, morphology data. Natural and artificial impacts on those processes were evaluated from sandbar deformation, fluctuation of bed elevation and volume in low-water channel. As a result, sandbar deformation by the floods and revetment works was confirmed. The floods and dam construction affected fluctuation of river channel with the sediment deposition and scouring.

Journal of Japan Society of Civil Engineers, Series B1 (Hydraulic Engineering)

土木学会論文集B1(水工学)


CHANNEL TO DEVELOPMENT ON UPSTREAM DUE TO CHANGE OF PARTIALLY REMOVED WEIR

堰の部分撤去に伴い上流側へ発達する流路の形状について

In this paper flume experiments were conducted to study effects of partial removal of a weir on bed morphology. The depth and width of the removed part were systematically changed. The channel formation and bed degradation were focused. It is found that the channel is formed at the center of the flume by partial removal. In comparing the systematic changes of the removal depth and width, it was noted that changes of the removal depth affects in wider area than the removal width. Moreover, the deep channel was confirmed in the channel. The results indicate that partially removed weir can improve sediment movement from the upstream to downstream. Since the various bed shapes can be formed by the partial removal, there is a possibility that can contribute to improve habitats of river organisms, such as riffle-pool structure and a smooth slope by deposition along the bank side.

土木学会論文集B1(水工学)


Study on Safe Evacuation of Beach Users by Multi-Agent Model with Video Data of Evacuation Drill

避難訓練データを援用したマルチエージェントモデルによる海水浴場利用者の安全避難に関する検討

Japanese government issued the hazard maps of Tsunami by Great Nankai Trough Earthquake in August of 2012. There are many swimming beaches in Tsunami attacking area. Evacuation plan should be made for beach users because many strangers are there. In this paper, evacuation simulations have been conducted by a multi-agent model to investigate factors for safe evacuation. Walking velocity of users in the sea, on the beach and on the road was used in the simulations. The velocity was figured by using video data of evacuation drill. From the results, it is found that the appropriate settingof guidepanels is an important factor for achievementof safe evacuation.

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

土木学会論文集B2(海岸工学)


SUBSURFACE WATER STORAGE AND SLOPE FAILURE IN THE SABAGAWA RIVER BASIN USING DISTRIBUTED RUNOFF MODEL

分布型流出モデルを用いた佐波川流域における斜面地中水貯留高と斜面崩壊に関する考察

Proceedings of the 7th Symposium on Sediment-Related Disasters

第7回土砂災害に関するシンポジウム論文集


DETERIORATION OF TSUNAMI AWARENESS OF BEACH USERS

海岸利用者の津波に対する防災意識の経年低下

Questionnaire researches were carried out three times in the same beach. These researches were carried out in August of 2006, August just after the Tohoku Earthquake Tsunami in 2011, and August in 2013 when two years passed after the Tsunami. Using these data, time variation in tsunami awareness of beach users is discussed in this paper. From the results, it is found that the awareness of them became better just after the Tohoku Tsunami, but it has deteriorated with years. Therefore, stakeholders have to consider these results and be planning educational campaigns and so on.

本研究では，東南海・南海地震発生時に津波による甚大な被害が予想される関西圏における著名リゾート地である和歌山県白浜町の白良浜海水浴場において，2013年8月に海水浴場利用者を対象とした津波防災意識に関するアンケート調査を行った．そして，東北地方太平洋沖地震発生前の2006年と発生直後の2011年に同海水浴場で実施していた同様のアンケート調査の結果とを比較することで，経年による海岸利用者の津波に対する防災意識の低下を明らかにしようとした．その結果，海岸利用者の津波防災意識は災害の発生や経過年月によって変化することが明らかとなった．したがって，防災教育や津波防災などの対策立案者はこうした意識変化を考慮して行う必要がある．

土木学会論文集B3(海洋開発)


A METHOD FOR ESTABLISHING STAGE-DISCHARGE RATING CURVE BY USING RAINFALL, WATER LEVEL DATA AND RUNOFF MODEL

水位・雨量データと流出モデルを使用して作成した洪水時における水位流量曲線の妥当性

A method for establishing stage-discharge rating curve (H-Q curve) in a flood event was discussed, which used a runoff model to the rainfall data and the water level data observed in a basin. A quadratic function that represented the H-Q relation in the river channel was built into the runoff model. When the observed water level hydrographs during a flood event was reproduced by the model, the H-Q curve was established. The method was applied to four water level stations in Dokigawa River basin, and the established H-Q curve was compared with the H-Q curve based on the runoff observation. The error margin of the established H-Q curve and the observed was about 5% or less. The proposed method can be used to verify and adjust the observed H-Q curve that may lead to an unsatisfied water budget of rainfall and discharge for the basin.

Annual Journal of Hydraulic Engineering. JSCE


EFFECT OF A FIXED WEIR ON SEDIMENT TRANSPORT CHARACTERISTICS AND AQUATIC INVERTEBRATE ALONG A MOUNTAIN STREAM

山地渓流に設置された固定堰が流砂特性および底生動物群集に及ぼす影響について

We investigated effect of a fixed weir on sediment transport characteristics and aquatic invertebrate. The weir is located in an upper reach of Katsuura River (Tokushima Pref., Japan). We measured hydrologic parameters and performed quantitative samplings for benthic animals. In the rapids, component ratio of the sediment inside river bed changes in the downstream of the weir due to only the sand passing through the weir. Therefore, the species richness decreases because the habitats of benthic animals are influenced by this change. Especially, the animal having a life type of creeping is suggested to be strongly affected. However, in a mountain stream, effect of damming on eco-system in the downstream is suggested to be reduced in contrast to that in middle and lower reaches.

土木学会論文集B1(水工学)


EFFECTS OF HEAD PARTS TYPES OF SPUR DYKES ON THE HYDRAULICS IN THE EMBAYMENTS

水制の頭部形状がわんど内の水理に与える影響

Spur dykes have a variety of types in materials and shapes etc. In this paper, shapes of spur dykes, especially their head parts which are installed parallel to the main flow direction is studied. The laboratory experiments were conducted for 10 spur dykes in a straight flume with a movable bed and 10 spur dykes. Effects of the length of the head parts on bed configurations and the flow were determined and discussed. The equilibrium bed configurations and the velocity on surface flow were also measured. How the shapes of the spur dykes make geometric diversity in the embayment, and possibly diversity of habitats, is highlighted.

Journal of Japan Society of Civil Engineers, Series B1 (Hydraulic Engineering)

土木学会論文集B1(水工学)


Estimation of offshore wind resources in coastal waters off Shirahama using ENVISAT Advanced SAR images


A METHOD FOR ESTABLISHING STAGE-DISCHARGE CURVE BY USING RAINFALL, WATER LEVEL DATA AND RUNOFF MODEL

雨量・水位データと流出モデルを用いた水位流量曲線作成法の実用性

A method for establishing stage-discharge curve (H-Q curve) using a runoff model to the rainfall observed in a basin and the water level observed in a river channel was discussed. A quadratic function that represented the relation between water level and discharge was built into the runoff model. When the observed water level hydrographs at some floods were reproduced, the H-Q curve was obtained. The method was applied to six water level stations in Shikoku which observed runoff quantity, and the established curve was compared with the H-Q curve based on the runoff observation. Two major findings were obtained: (1) a satisfied H-Q curve in which the error was 5-17% compared with measurement H-Q curve could be set up by using the data of one main flood event when there was a rain-gauge stations for each 30km2 in the basin or more; (2) a useful H-Q curve was still obtained by using a lot of flood events when the rain-gauge stations were sparse and were unevenly distributed.

水工学論文集 土木学会水工学委員会 編


Weir removal and its influence on hydro-morphological features of upstream channel

This paper presents an experimental study on the upstream channel responses due to partial removal of a weir, focusing on the impacts of the removal shape of the weir on the hydro-morphological features. It is found that the shape of the removal significantly affects the 3D flow structure and the local scour around the weir and poses influences on the propagation process of upstream sandbars. However, the characteristics of the sandbar system at the quasi-equilibrium stage are governed by the removal area rather than the removal shape. Governing parameters characterizing the removal shape is proposed as well. Desirable morphological features could be achieved by a careful selection of those parameters.

Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))


避難意思決定に及ぼす東日本大震災の影響

避難意思決定に及ぼす東日本大震災の影響

土木学会論文集B3(海洋開発)

土木学会論文集B3(海洋開発)


PONDS IN SMALL AND MEDIUM-SIZED RIVERS WITH FLOOD DAMAGEEVALUATION OF MEASURES AND EFFECTIVE USE OF FLOOD CONTROL

浸水被害の発生した中小河川におけるため池の洪水調節機能の評価と有効活用方策

In this paper, was constructed to target the small and medium-sized river basins distributed runoff model that can evaluate the function of flood control ponds for agricultural. Analyzed by this model for flood, flood damaged, were discussed with respect to reduction effect of flow reduction and flood damage. As a result was estimated, ponds and flood is cleared approximately 14% by reducing the peak flow of approximately 10%.Therefore, it was suggested that existing ponds for agriculture have contributed to the reduction of flood damage. Furthermore it was suggested that, as a result of verification the effect of pre-discharge ponds, flood damage reduction effect of flow reduction and further has been confirmed, in the small and medium-sized rivers and the introduction of effective measures basin.


New 3-D flow interpolation method on moving ADCP data


SUBSURFACE WATER STORAGE AND SLOPE FAILURE OF FOREST BASIN IN THE NAKAGAWA RIVER UPSTREAM USING DISTRIBUTED RUNOFF MODEL

分布型流出モデルを用いた那賀川上流における森林斜面の貯水高と斜面崩壊に関する考察


PEAK DISCHARGE REDUCTION FUNCTION OF FLOOD CONTROL FACILITIES FOR YAMATO RIVER BASIN IN NARA PREFECTURE

大和川奈良県域における治水・流域対策施設の有する洪水ピーク流量の低減機能

Annual Journal of Hydraulic Engineering. JSCE


Impacts of Weir Removal on Channel Dynamics in Non-Uniform Sediment Beds


うねりと発達中の風波が混在する湾内における大気・海洋間運動量輸送

うねりと発達中の風波が混在する湾内における大気・海洋間運動量輸送

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

土木学会論文集B2(海岸工学)


A Study on Future Land Use Considering Flood Disaster in Osato District in Kaiyo Town, Tokushima

海陽町大里地区における水害から見た土地利用の方向性に関する研究

本研究では，徳島県海陽町大里地区の善蔵川流域を対象とし，外水氾濫，内水氾濫の浸水深と人口を用いて水害リスク評価値を，生活施設の位置を用いて住環境評価値を計算した．これらのデータと土地利用データを用いてクラスター分析により地域を分類し，その結果から，今後の土地利用方針を示した．

Proceedings of Awagakkai, No.63 Research Reports of Kaiyo City (Tokushima Prefecture)

阿波学会紀要第63号海陽町総合学術調査報告


Retarding Capacity Change of Wetland Paddy Fields due to House Land Development toward Wise Land Use against Flood Utilising Paddy Fields as Green Infrastructure -


Interview Investigation about Evacuation Behavior of Residents in the Naka River Area in the Typhoon No.1411 and No.1511

2014年台風11号と2015年台風11号における那賀川流域住民の避難行動に関するヒアリング調査

平成27年自然災害フォーラム論文集

平成27年自然災害フォーラム論文集


平成26年台風12号豪雨による阿南市加茂谷の洪水災害

平成26年台風12号豪雨による阿南市加茂谷の洪水災害


海水浴場利用者と周辺住民の津波防災意識の落差について

海水浴場利用者と周辺住民の津波防災意識の落差について

土木学会四国支部平成24年自然災害フォーラム論文集

土木学会四国支部平成24年自然災害フォーラム論文集


台風1112号による紀伊半島豪雨の被害状況と災害対策の課題

台風1112号による紀伊半島豪雨の被害状況と災害対策の課題

平成24年自然災害研究フォーラム論文集

平成24年自然災害研究フォーラム論文集