摘要
坝基岩体风化程度的划分对大坝工程建基面的标高选择和确定基础设计方案意义重大。通过试验研究,采用岩石野外特征外观观察、超声波法和冲击弹性波法试验方法,对各种风化程度岩体岩层、钻孔芯样进行了大量试验比对,建立了含有冲击弹性波法岩石风化程度划分界限的评价表,提出的冲击弹性波法为坝基岩体风化程度划分提供了一种新的测试方法和岩石风化程度划分界限值,丰富了岩体风化程度判定技术方法。该方法判定结果明确、具有可操作性,测试方便快捷,具有推广应用价值。
The division of rock mass weathering degree of dam foundation is significant for the elevation selection of dam foundation and determination of foundation design plan. A large number of experimental comparisons were made on the rock mass and the drilling core sample of various weathering degree by means of observing external features, using the ultrasonic method and using the elastic wave method. Then weathered degree division table of rock mass were established including elastic wave method. The method provides a new test method for the weathered degree of dam foundation rock. The method has the advantages of definite result, operability, convenient test and wide application value.
基金
黑龙江省应用技术研究与开发项目(GZ13A001)
关键词
岩体风化程度
冲击弹性波
风化程度划分
weathering degree of rock mass
elastic wave
the division of weathering degree
