成都市含石膏及钙芒硝盐红层主要工程地质问题及对策

Main Engineering Geological Issues and Countermeasures of Red Layer Comprising Gypsum and Glauberite Salt in Chengdu Sub-provincial Citu

本文全面总结成都市含石膏及钙芒硝盐红层的主要工程地质问题,并提出开发利用对策。通过收集整理和深入研究现有成果,提出该红层存在的主要工程地质问题:在雨水淋滤溶蚀作用下,硫酸盐腐蚀钢筋砼,并对地表水及地下水造成污染等。针对上述问题,本文提出了加强地质勘查及试验工作、动态设计、信息化施工、对出现的溶孔与空洞及时进行充填注浆等工程措施处治,以及提高砼标号、采用抗酸腐蚀水泥防腐蚀、对抽取的地下水进行处理等一系列应对措施。

This paper provides a comprehensive summary of the primary engineering geological problems related to the red layer comprising gypsum and glauberite salt in Chengdu City.Through an in-depth study and collection of research findings,the following problems have been identified:leaching corrosion caused by rainwater,sulfateinduced corrosion of reinforced concrete,and contamination of both surface and groundwater.To tackle these challenges,a set of corresponding measures is proposed.These include enhancing geological exploration and testing,dynamic design,informationbased construction,promptly addressing existing dissolution cavities through filling and grouting techniques,employing higher-grade concrete or acid-corrosion resistant cement to prevent corrosion,and implementing appropriate treatment methods for extracted groundwater.