摘要
由于坝区低高程岸坡特殊的地貌和应力环境,其卸荷裂隙的形成机理和地质表现也与高高程岸坡有所不同。采用缓倾角卸荷裂隙的平均倾角、开度和、裂隙密度、平均迹长作为低高程岸坡卸荷带划分的量化指标,结合西南某大型水电工程实际,在现场大量裂隙精细调查的基础上,分析表明4个指标与卸荷强度有较好的响应,继而给出了坝区低高程岸坡卸荷带划分的建议值。
Low-elevation slope differs from high-elevation slope in genetic mechanism of stress-release crack due to special landform and stress conditions. The stress-release zone of low-elevation slope may be divided on the basis of quantitative indexes such as average dip angle, angle sum, density and average length of stress-release crack which is in response to the actual stress-release intensity. Accordingly, recommendations of division of stress-release zones of low-elevation slope are given.
出处
《四川地质学报》
2009年第2期188-190,共3页
Acta Geologica Sichuan
关键词
低高程
卸荷带
倾角
迹长
low-elevation
stress-release zone
dip angle
length
