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基于750kV兰州东—银川东输电线路工程的工程勘察,考虑宁夏地区湿陷性黄土的区域分布特点,分段对输电线路沿线宁夏境内90km湿陷性黄土的主要物理特性与湿陷性进行对比分析和总结,评价了沿线黄土的湿陷等级及界限,同时对沿线地下水及黄土的化学矿物进行分析。分析结果表明:该地区黄土的湿陷性与分布区域、埋深、颗粒组成、天然孔隙比、干容重等物理性质和黄土的化学矿物组成存在必然的联系。试验结果可以为该工程的设计施工提供依据,也为今后该地区施工建设提供参考数据。
Based on the engineering investigation of the Lanzhou East-Yinchuan East Transmission Line Project in 750 kV and considering the regional distribution characteristics of collapsible loess in Ningxia, the main physical characteristics and collapsibility of 90 km collapsible loess in Ningxia are also analyzed by subsection And summarizes and evaluates the grade and limit of collapsing of loess along the line, and analyzes the chemical minerals of groundwater and loess along the line. The analysis results show that the collapsibility of loess in this area is related to the distribution of chemical composition, chemical composition of loess and its physical properties such as distribution area, burial depth, grain composition, natural porosity ratio, dry bulk density and so on. The test results can provide the basis for the design and construction of the project and provide reference data for the construction of the area in the future.