Bibliographic citations
Díaz, M., Rodríguez, J. (2018). Estudio de la estabilidad de taludes en roca entre los kilómetros 95 al 97 de la carretera Ciudad de Dios - Cajamarca [Tesis, Universidad Privada del Norte]. https://hdl.handle.net/11537/12738
Díaz, M., Rodríguez, J. Estudio de la estabilidad de taludes en roca entre los kilómetros 95 al 97 de la carretera Ciudad de Dios - Cajamarca [Tesis]. PE: Universidad Privada del Norte; 2018. https://hdl.handle.net/11537/12738
@misc{sunedu/2803424,
title = "Estudio de la estabilidad de taludes en roca entre los kilómetros 95 al 97 de la carretera Ciudad de Dios - Cajamarca",
author = "Rodríguez Salazar, Jean Geyler",
publisher = "Universidad Privada del Norte",
year = "2018"
}
Due to the constant landslides that occur in places close to the area of study, especially in times of winter, led us to carry out a more detailed and thorough study about the stability of slopes in rock between 95 to 97 kilometers of the road City of God - Cajamarca. It is for this reason that this thesis is responsible for informing the central government and the population if you can really produce a slip in the section above. In order to reach a final verdict was divided into seven stations geomecanicas to the area, where the cohesion and internal friction angle of the rock was calculated by the criterion of breakage of Barton - Bandis, analyzed the kinematics of the slopes, the calculation of the density of the litologicas outcropping units and finally the data obtained were entered to the specialized (Rocscience software) to obtain the value of the safety factor (FS) for each station geomechanics studied. Taking How to claim what was written, the authorities will have to take a hand in the matter to be able to stabilize such slopes, and so avoid the city of Cajamarca is cut off from the coast; therefore, human and economic losses. In the field are planar type failures observed, and the most striking feature of this type of failure is caused by the presence of incumbents that buzan toward the slope and whose direction is quite parallel to the face of the slope, with some structural control. The pair were distinguished 2 discontinuities (a predominant and other random), which is why it was decided by the criterion of Barton - Bandis breakage for the calculation of the cohesion and internal friction angle of the rock, using the following equation: 𝜏 = 𝜎𝑛.𝑡𝑔 [∅𝑏 + 𝐽𝑅𝐶. 𝑙𝑜𝑔10 ( 𝐽𝐶𝑆 𝜎𝑛 )] Where: 𝜏: Peak shear strength. 𝜎𝑛: Applied normal stress. ∅𝑏: Basic friction angle. 𝐽𝑅𝐶: Joint Roughness Coefficient. 𝐽𝐶𝑆: Joint wall Compressive Strength. To calculate the parameters of such a criterion of breakage trials were carried out in the field and in the laboratory; and then use abacos geomechanical. The type of research design is pre-experimental, since the thesis students we limit ourselves only to observe the natural conditions of the phenomenon, analyzing it without modifying it or alter it; what allows us to rely on the existence of high levels of validity of the results obtained. It identified like dependent variable to the stability of taludes and like independent variable to the quality of the rock. The study area is located in the district of Chilete, province of Contumaza, Cajamarca region; covering an approximate area of 0.5 km2. The geological framework litologicas is dominated by units of the Formations Carhuaz and Farrat, defining in field a stratigraphy with dips in favor of the main road. The slopes that are among the progressive of the Km 95+000 to 97+000 presented constant problems of sliding blocks of rock, so that the study focused on initial perform a mapping in detail line, making direct in field trials with the hammer of Schmidt and comb of Barton, to measure the resistance to compression and the roughness respectively; at the same time taking data as a DIP and DIP DIR of the discontinuities. Representative samples were taken for each station geomechanics, based on the criterion of using rock fragments intact, i.e. showing no discontinuities. These samples taken in the field were prepared in the laboratory of mechanics of rocks of the UPN using samples and based on the criteria described by the ISRM, where the test pieces must have a dimension of at least < 40% of the total length of the tilt test in order to be able to carry out the test of the same name and determine the density. Finally, it was determined the cohesion and internal friction angle of the rock with the help of the RocData program. The kinematic analysis of the slopes studied was carried out in the program Dips. To determine the density of the units litologicas outcropping was applied the classic formula of ρ= m/V; where "m" is the mass and "v" is the volume. The program RocPlane served us to calculate the safety factors static and pseudo-static for each station geomechanics studied. The results indicate that the area under study shows a high degree of instability of slopes in rock and this is reflected in the following summary table: No. JRC JCS Density (Kn/m3) Basic Փ Փ C (MPa) FS (Static) FS (Pseudostatic) Condition E1 8 90 25,036 29 41.04 0,092 1.12 0.94 Unstable E2 4 105 25,036 28 34.91 0,026 0.91 0.76 Unstable E3 4 116 25,036 28 44.85 0,028 0.79 0.65 Unstable E4 5.5 114 25,036 27 35.15 0,069 0.72 0.58 Unstable E5 7.5 90 25,036 29 40.34 0,082 1.10 0.91 Unstable E6 3 120 25,036 27 32.10 0,022 0.68 0.54 Unstable E7 3 116 25,036 28 47.95 0,013 0.75 0.58 Unstable It is therefore recommendedp lace a technical study to stabilize and prevent landslides in the area studied, according to the information provided by this thesis. KEYWORDS: Landslides, Rock slope stability, geomecanicas stations, cohesion and internal friction angle of the rock, criterion of breakage of Barton - Bandis, kinematics of the slopes, density of the units litologicas outcropping, specialized software, static safety factors and pseudoestatics, planar type failures, together, direction and dip, discontinuities, peak shear strength, applied normal stress, basic friction angle, Joint Roughness Coefficient, Joint wall Compressive Strength, essays, abacos geomechanical, quality of the rock, geological framework, geological formations Carhuaz and Farrat, stratigraphy, mapping in detail line, hammer of Schmidt, comb of Barton, samples, rock intact, extractor samples, Tilt Test.
This item is licensed under a Creative Commons License