萌芽的研究Challenging Topics せん断に伴う粒子配向の変化Shear Wave measurement for Real-time Monitoring of Soil Fabric Changes due to shear セメンテーションによって保持された超高間隙構造土のせん断特性Shear Strength of Artificial Pumice SoilHaving Extremely Loose Structure 多孔質粒子やセメンテーションを持つ火山性超高間隙構造土のせん断特性Shear Characteristics ofExtremely Loose Volcanic Soil 超高間隙構造土の不飽和せん断特性Shear Strength of Unsaturated Soil Having Extremely Loose Structure 破砕性人工軽石の排水ねじりせん断時のひずみの局所化Strain localization during drained torsional shear tests in crushable artificial pumice soil 人工軽石の状態境界面State boundary surface of artificial pumice 火山性土のせん断挙動における強い収縮傾向Effect of Strong Contractionon the Shear Behavior of Volcanic Soil 火山性軽石の一面せん断挙動における含水比の影響Effects of water content on the behaviour of volcanic pumice in the direct shear box test 原位置繰り返し一面せん断試験の開発in-situ cyclic direct shear test 御嶽現地調査Ontake site investigation ドゾウ沢火山性軽石の不攪乱・再構成供試体の三軸圧縮挙動Triaxial compression behaviour ofundisturbed and re-constituted volcanic pumice soiltaken from Dozo-zawa river 原位置一面せん断試験装置の開発とドゾウ沢軽石への適用Development of in-situ direct shear test apparatus and its application to Dozou-sawa pumice soil ネパール・ポカラにおける多発陥没の調査Survey of Multiple Sinkholesin Pokhara, NEPAL 宮崎県都城市の陥没発生地における地盤調査Survey of Sinkhole areaIn Miyakonojo, Miyazaki 不飽和サクションモデルによる地中空洞DEMシミュレーションDEM Simulations on Development ofSubsurface Cavity using Suction-Tension Model 地中空洞周りの波動伝播特性Dynamic wave propagation in soil around a cavity 地中空洞周りの圧縮波伝播特性に関するDEM解析DEM analyses on P-wave propagationaround a subsurface cavity 北海道安平町の地盤陥没跡地における表面波探査Surface-wave survey at a ground cave-in sitein Abira-town, Hokkaido 地盤内波動伝播特性に着目した深部空洞探査の可能性Challenge of Detecting Deep-Ground CavitiesUsing Wave Propagation in Soil 地下流水音測定による水みち探査の可能性Ground Water Sound Measurementto Search for Water Paths 地下流水音測定による水みち探査の可能性Ground Water Sound Measurementto Search for Water Paths