Results

from an engineering geological mapping study of the urban area of Ouro Preto in the state of Minas Gerais, Brazil, are presented. The goal of the study was to verify the efficacy of procedures, methods and classification schemes based on engineering geological mapping principles to generate data and maps for urban planning, restructuring (rehabilitation) and engineering projects. The study was developed at a 1:10,000 scale and based on field and laboratory studies and on the analysis and interpretation of aerial photography and satellite images. The selected study area has been urbanized for over 300 years and requires territorial planning and reorganization of land uses. The area is composed of highly variable rock types, unconsolidated materials and terrain features. Data collection and mapping were performed to identify and delineate 51 engineering geological units in terms of the spatial distribution of geological materials, genetic characteristics, mineralogy, the estimated strength, hydraulic conductivity interfaces and potential failure surfaces. All units were assessed in terms of excavatability conditions, predisposition to erosion and shallow translational landslide, suitability for sustainable urban drainage systems (SUDS), contaminant flow conditions, potential use as construction materials and foundation-related aspects. Recommendations for a detailed site investigation were made, and the suitability of geological materials for engineered fill was evaluated. A constraint zoning analysis was carried out to contextualize urban planning. The adopted procedures, methods and classification schemes were shown to be efficient when implemented in conjunction with intensive field studies and enabled the delineation of units with different engineering geological characteristics that are important for urban planning involving different users.

中文翻译：

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数据稀缺地区中用于城市规划的工程地质制图程序：在巴西南部的应用

结果

介绍了巴西米纳斯吉莱斯州欧鲁普雷图市区的工程地质制图研究。该研究的目的是验证基于工程地质制图原理的程序，方法和分类方案的有效性，以生成用于城市规划，改建（修复）和工程项目的数据和地图。该研究以1：10,000的比例进行，并基于野外和实验室研究以及对航空摄影和卫星图像的分析和解释。选定的研究区域已经城市化了300多年，需要进行领土规划和土地用途重组。该地区由高度可变的岩石类型，疏松的材料和地形特征组成。进行了数据收集和制图，以根据地质材料的空间分布，遗传特征，矿物学，估计的强度，水力传导率界面和潜在破坏面来识别和描绘51个工程地质单位。对所有单元进行了评估，包括可动性条件，易受侵蚀的侵蚀和浅平移滑坡，适用于可持续城市排水系统（SUDS），污染物流的条件，用作建筑材料的潜在用途以及与基础相关的方面。提出了进行详细现场调查的建议，并评估了地质材料用于工程填充的适用性。进行了约束分区分析，以使城市规划更符合情境。通过的程序