International Journal of Geoscience, Engineering and Technology

Soil and Water Loss Estimation Mathematical Models: A Review

Nayme Soares Guedes — 2024-12-02

The erosion process is natural but has intensified in recent years due to anthropogenic activities, becoming a socio-environmental issue resulting from soil degradation. This process impacts various areas, and its measurement is a critical tool for adopting management strategies and conservation practices. Mathematical models can estimate soil losses under different environmental conditions. When integrated with GIS environments, these models significantly reduce execution and study costs, while generating valuable information, creating maps, and characterizing the environment. This study aimed to perform a systematic literature review on mathematical models for soil and water loss and to highlight some of their applications through the analysis of articles published in journals and indexed in electronic databases. Over the years, various models have been developed, and their use has proven essential for implementing conservation practices and restoring degraded areas. Due to the complexity of the process, it is crucial to consider the parameters available in each situation to select the most appropriate model.

Study on Mass Movement Risk Area in The Manoel Pimenta Neighborhood in the City of Teófilo Otoni/MG

Helio Soares de Aguilar Junior — 2024-12-02

Brazil is a country with great climatic, geological and socioeconomic diversity. One of the main problems faced in urban centers is the occupation of land, mostly by an economically vulnerable population, in areas at risk of movement of massive soil or in areas of flooding, putting them at risk of material, health and life. This work aims to identify, classify and recommend technical solutions in an area at risk of slope sliding in the Manoel Pimenta neighborhood, in the city of Teófilo Otoni. A history of mass movement and the imminence of new mass movement were noted in the study area, where there are 3 residences, all classified as R4 (High Risk), requiring intervention from public bodies and owners to mitigate risks.

A study on dynamic non-destructive testing of ground anchorages - dynamic stiffness method

Emanuel Gomes Cândido Coelho — 2025-01-29

This present paper analyzes an anchored retaining wall using a non-destructive dynamic test, which is based on the variation of the dynamic stiffness of the ground anchors, applied to a real case study. The main objective is to evaluate the applicability and particularities of the method to identify the structural integrity of the anchorages, including their free, total and anchored lengths, as well as their current working loads. The results indicated that the dynamic stiffness of the anchorages varied around 5.0E8 N/m, while the working loads found were values between 74.6 kN and 107.9 kN. The analyses performed indicated that the dynamic stiffness of the anchorages did not present large variations along the anchored wall, proving that the determined lengths accurately reflect the real situation of the anchorages. In addition, a very isonomic distribution of forces was obtained, evidenced by the stiffness values obtained. The method stood out for its practicality in execution and analysis of results, consolidating itself as an effective and non-destructive tool for structural evaluation. Despite the general ease of the method, the study reinforces the need for technical experience in the interpretation of specific steps of the procedure, especially in cases with more complex structural behavior. The test proved to be a reliable solution for the continuous monitoring and diagnosis of containment systems, meeting the requirements of normative inspections and contributing to preventive maintenance. Thus, the work reinforces the potential of the method to ensure the safety, structural performance and longevity of anchored walls.