Wataru NABESHIMA
Research of a Falling Rock Protection System with Buffer Devices in Mountain Slope by Static Analysis
Eiji IWASAKI
Falling rock disaster occurs frequently in Japan. Rock fall disaster affects the safety and economic activities of the society. Therefore, many countermeasures against falling rock have been adopted along the country. The rock fall protection net with buffer devices is a high -performance rock fall counter measure. To design a rock fall protection net with buffer devices, it is necessary to seek the amount of deflection and slippage. Previously, by using the dynamic response analysis method for calculating these two important parameters have been proposed. In addition, to reduce analysis time, instead the dynamic response analysis, a static response analysis is used.
However, in these analytical models, rock fall protection net is set horizontal and rocks are dropped vertically. This situation differs significantly from the state of rock fall protection net is constructed on the actual slope. Therefore, in this research was assumed to rock fall protection net is actually constructed, designing the analysis model rock fall protection net having a slope. And consider the effect by slope on the results of static analysis.
Using an analytical model of a rock fall protection net having a slope, and compare the results of the dynamic response analysis and static analysis were compared to confirm its reproducibility.
Create an analytical model that takes into account the size and slope of the rock fall protection net that is actually constructed, and the design parameters required were calculated.
Effects of inclination and position of the falling rock into the parameters required for the design were examined.
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