Correlation of Landslides to
Rainfall within Philex-Padcal Mine and its Vicinity
Mines is located within a very steep and rugged terrain in the
southern foothills of the Cordillera Central Mountain Range. The
climate is tropical monsoonal and characterized by a pronounced
rainy season from May to October and dry season during the rest of
the year. Due to steep terrain and high rainfall, slope failures can
occur along the Philex-Kias provincial road and other areas within
the mine camp.
paper aims to report the correlation between rainfall and slope
failures based on data gathered from1990 to 1993 using the rain
gauge loaned by Philvolcs to Philex in the aftermath of the July 16,
analysis showed that a rainfall of 23mm per hour to 107mm per hour
could trigger a landslide depending on the intensity, duration, and
frequency of rainfall.