2012 Fiscal Year Final Research Report

Microtremor Measurement of Rock Mass and Its Application to Rock-fall Hazard Assessment

Research Project

Project/Area Number	22560474
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Structural engineering/Earthquake engineering/Maintenance management engineering
Research Institution	Saitama University
Principal Investigator	MOGI Hidenori 埼玉大学, 大学院・理工学研究科, 准教授 (80261882)
Co-Investigator(Kenkyū-buntansha)	OSADA Masahiko 埼玉大学, 地圏科学研究センター, 准教授 (00214114)
Project Period (FY)	2010 – 2012
Keywords	維持管理工学
Research Abstract	Rock-fall hazard assessment is indispensable procedure in maintenance of roads and rail tracks. So, a simple and quantitative evaluation of the hazard is needed. From this point of view, several methods based on vibration measurements have been presented. In this study, we proposed a new method to estimate toppling acceleration of a rock mass based on the horizontal-to-vertical natural frequency ratio of microtremors. We applied the method to rock masses and showed that the estimated toppling accelerations were consistent with results obtained from the method proposed by other authors.

(6 results)