摘要
为了查明水利工程砂卵砾石层的工程地质特性,根据砂卵砾石层具有结构松散、物理力学性质均匀性差等特点,提出用“先有地质分析,后做勘探验证”的思路研究勘察方法。从收集资料内业分析开始,采用地质测绘、物探、轻型勘探、重型勘探、现场测试、室内试验的工作路径,既可实现高效勘察,又可有效解决工程问题。工程实例表明,在选择直接有效的勘察方法的基础上,结合室内外试验成果,采取多种方法相互印证水利工程砂卵砾石的物理力学特性,为设计提供准确的地基分层及力学参数。工程建成以来的安全运行验证了该方法是有效可行的。
In order to find out the engineering geological characteristics of sand gravel in water conservancy projects, based on the characteristics of loose structure and poor uniformity of physical and mechanical properties of sand gravel layer,this study introduced the survey method of “pre-existing geological analysis and post-exploration verification”. That starting from the internal analysis of the collected data, adopting the working paths of geological mapping, geophysical exploration, light exploration, heavy exploration, field test and indoor test, and then optimizing the survey method reasonably can achieve a high-efficiency survey and solve engineering problems effectively. The engineering example showed that based on the selected direct and effective survey method and the indoor and outdoor test results, various methods have verified the physical and mechanical properties of the sand gravel in water conservancy project, which could provide the accurate foundation stratification and mechanical parameters for design. The safe operation since the project was built has verified that the method was effective and feasible.
作者
张海发
ZHANG Haifa(Comprehensive Technology Center of Pearl River Water Resources Commission, Guangzhou 501611, China)
出处
《广东水利水电》
2019年第9期77-80,共4页
Guangdong Water Resources and Hydropower
关键词
砂卵砾石
勘察方法
密实状态
力学特性
sand gravel
prospecting method
compact state, mechanical properties
