Studies on rock characteristics and timing of creep at selected landslide sites in Taiwan

Abstract

A study was conducted to investigate the causes of and rock characteristics at three landslide sites in the Tesngwen Reservoir watershed of southern Taiwan. Research methods used included the petrographic microscope, X-ray diffraction (XRD), scanning electron microscope (SEM), inductively coupled plasma spectroscope (ICP), constant head permeameter in triaxial apparatus, surface extensometer, and seismic exploration by wave-refraction processes. Chemical analyses of the rock indicated a higher Na than K content at all three landslide sites; iron normally occurs as Fe3+. The relationships between percolation velocity (V) and gradient (I) were developed for the different sites. A prediction equation for the timing of landslide failure was also developed from surface extensometer measurements.

Parent Publication

• Land Stewardship in the 21st Century: The Contributions of Watershed Management; 2000 March 13-16; Tucson, AZ

Citation

Lee, Cheng-Yi. 2000. Studies on rock characteristics and timing of creep at selected landslide sites in Taiwan. In: Ffolliott, Peter F.; Baker Jr., Malchus B.; Edminster, Carleton B.; Dillon, Madelyn C.; Mora, Karen L., tech. coords. Land Stewardship in the 21st Century: The Contributions of Watershed Management; 2000 March 13-16; Tucson, AZ. Proc. RMRS-P-13. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 287-291.