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对山区场地而言,场平后的岩土条件和岩土体的湿润程度将发生较大变化,特别是回填区填土的物质组成、地下水位的相对变化等,造成岩土电阻率与原始地貌状况下迥然不同。该文以部分工程为基础资料,对比场地施工前后的电阻率数据及曲线,分析影响电阻率的主要因素,常见回填土岩性电阻率的变化趋势等。通过场地岩土的导电离子浓度及含水量、密实度、季节、岩性等方面,来认识电阻率变化的一些规律,推演回填土对岩土电阻率的影响。
For mountainous areas, the geotechnical conditions after the field level and the degree of wetting of the rock mass will change greatly, especially the material composition of the fill in the backfill area and the relative change of the groundwater level, resulting in the difference between the geotechnical resistivity and the original Landform conditions are very different. Based on some project-based materials, the article compares the resistivity data and curves before and after site construction, analyzes the main factors that affect the resistivity, and the trend of the resistivity of common backfill soils. Based on the conductive ion concentration and water content, compaction, season and lithology of geotechnical site, some laws of resistivity change are recognized, and the influence of backfill on the resistivity of geotechnical is deduced.