QUANTITATIVE ANALYSIS OF THE RELATION BETWEEN GROUNDWATER MOVEMENT AND SLOPE FAILURE

スポンサーリンク

概要

• 論文の詳細を見る

• Mountainslope failures (very rapid mass movements) often occur during heavy rain, and groundwater is considered to play a role in these failures. Results of a water level simulation study demonstrated that when water level acceleration (changes in the water level movement) peaks appeared in a bore hole many failures took place. To determine why failures occur when water level acceleration is increased, we designed a confined interflow model that incorporates the results of a soil horizon investigation. The process in which the water level acceleration peaks appear was analyzed in this model. Results showed that water level acceleration increased when the discharge of the interflow into the tank of the model was increased. Discharge of the interflow is thought to be related to the intensity of rainfall. We found that failures took place when the intensity of the rainfall was suddenly increased. In addition, we found that failures occurred two or three hours after the peak rainfall. The mechanical stability of the surface soil layer was analyzed from the results of this confined interflow model study. Results showed that failures happened when there was an increase in the rate of safety factor reduction.

• 日本自然災害学会の論文

著者

• Okimura Takashi

  Faculty Of Engineering Kobe University

関連論文

• A PREDICTION METHOD FOR SURFACE FAILURES BY MOVEMENTS OF INFILTRATED WATER IN A SURFACE SOIL LAYER
• A SLOPE STABILITY METHOD FOR PREDICTING RAPID MASS MOVEMENTS ON GRANITE MOUNTAIN SLOPES
• QUANTITATIVE ANALYSIS OF THE RELATION BETWEEN GROUNDWATER MOVEMENT AND SLOPE FAILURE

スポンサーリンク