Obras hidráulicas japonesas en la prevención de riesgos por flujos de detritos en Chosica (Perú)

Abstract

In front of the generation of debris flows on the slopes surrounding Metropolitan Lima, is a need to have alternatives and technology whose effectiveness has been demonstrated in solving such problems. This would allow an adequately management this latent problem in our increasingly densely populated capital city, who demanding more space for housing, even in areas with unfavorable conditions. In this regard, it is proposed to consider the application of advanced Japanese technology and the development of a multidisciplinary work in collaboration with other entities involved in risk management. The selected area as a pilot to develop the proposal has the characteristics of a critical area, it is considered at high risk by these phenomena. The implementation of a SABO Master Plan based on the generation of risk scenarios, allow to take feasible mitigation actions. Studies show that debris flows have a recurrence in this sector of Lima and in the past have caused countless damages and deaths. The SABO technology is applied successfully in Japan in areas with steep slopes and short course, like we have on the slopes of the Peruvian capital. The proposal was exposed as a plan of Peruvian action in the 3rd edition of the international course “Disaster Management for Landslide and Sediment-Related Disasters” (triggered by heavy rainfall, earthquake and volcanic activity), organized by the International Cooperation Agency of Japan - JICA.