Bibliographic citations
Ocampo, J., (2024). Análisis de estabilidad de una Presa de Tierra en la Quebrada Wiro Wiro del Distrito Buldibuyo-Provincia de Pataz [Tesis, Universidad Privada Antenor Orrego]. https://hdl.handle.net/20.500.12759/47272
Ocampo, J., Análisis de estabilidad de una Presa de Tierra en la Quebrada Wiro Wiro del Distrito Buldibuyo-Provincia de Pataz [Tesis]. PE: Universidad Privada Antenor Orrego; 2024. https://hdl.handle.net/20.500.12759/47272
@misc{renati/951254,
title = "Análisis de estabilidad de una Presa de Tierra en la Quebrada Wiro Wiro del Distrito Buldibuyo-Provincia de Pataz",
author = "Ocampo Cachay, Jorge Rafael",
publisher = "Universidad Privada Antenor Orrego",
year = "2024"
}
The present research work is located in hydrological terms in the area of influence in the northern mountains of Peru, in the upper part of the Yanapaccha River belonging to the inter-basin of the Alto Marañon River, specifically in the Wirowiro sub-basin (Huiro Huiro), in the annex Allpash, from the Province of Pataz in the La Libertad Region, above 3450 meters above sea level. The first part defined earth dams, which are hydraulic structures built from loose materials. In the second place, the National Charts at a scale of 1/100,000 from the IGN were used, with a minimum equidistance of contour lines of 50 m, prepared by stereo-photogrammetric methods with ground control - 1971, being Sheet 17-i (Tayabamba), where the location of the axis of the dam was determined through a satellite image and by topographic survey located at the level of 3544 m.a.s.l., then the volume of sediment could be calculated by applying analogous methodologies of 20,049 m3 for a design period of 50 years. , a useful reservoir volume according to agricultural demand of 115,000 m3, with a total reservoir volume of 135,049 m3, with a crown elevation of 3,561.50 meters above sea level, considering a useful volume of 1.5m for dams less than 50 m high, achieving a dam height of 17.5m and water level height of 16 m, with slopes 1:3 on the front face and 1:2 on the back face Then, in the third part, the analysis was carried out with and without a filter of the dam, resulting in the same flow rate of (2.75 x10)^(-5) m^3/sec/ml, for both cases, as well as the behavior of Koseny parable. Subsequently, 2 methods were applied to evaluate the stability of the homogeneous earth dam, which were the Fellenius method and the Bishop method. The results obtained by these methods show safety factors of 1.21 and 1.34, respectively, indicating that the dam is not stable, since both values are below the accepted minimum of 1.5 for stability. Therefore, the structure presents a significant risk of failure and may require overhaul or reinforcement to ensure its integrity and safe operation. xi The results of the Geostudio program indicate that the Janbu method tends to provide the lowest safety factors, while the Spencer method provides the highest, suggesting greater relative stability. In the condition immediately after construction, the safety factors without earthquake range from 1.323 (Janbu) to 1.457 (Spencer), and with earthquake, from 0.735 (Janbu) to 0.844 (Spencer). For the full reservoir, without an earthquake, the safety factors range from 1.247 (Janbu) to 1.399 (Spencer), and with an earthquake, from 0.797 (Janbu) to 0.914 (Spencer). In rapid discharge, without earthquake, the safety factors range from 1.251 (Fellenius) to 1.303 (Janbu), and with earthquake, from 0.738 (Janbu) to 0.853 (Spencer).
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