摘要
花岗岩风化程度与其所处微地形的相关性及各风化层深度的统计特征研究尚为欠缺。本文通过118个钻孔样本的统计分析,研究了丘陵区内花岗岩风化程度与地形条件的关系及区内风化层深度的统计规律。结果显示,花岗岩全风化、强风化层深度与地形有一定的相关性;花岗岩残积土、全风化层和强风化层深度的频率统计均具有较好的负指数分布特征。统计分析结果加深了对该地貌环境下花岗岩风化程度的认识,并为岩土工程勘察勘探深度预判及岩土工程设计提供较为可靠的参考依据。
The correlation between the weathering degree of granite and the micro-topography and the statistical characteristics of weathering depth are still insufficient.Based on the statistical analysis of 118 borehole samples,the relationship between the weathering degree of granite and the terrain condition and the statistical law of weathering layers depth in hilly area are studied.The statistical results show that the completely and heavily weathered depth have some relationship with the terrain condition.The granite residual soil,the completely and heavily weathered depths show the well negative exponential distribution.The statistical results provide the reference for strengthening the understanding of the weathering degree of granite in this terrain condition and the anticipation of the exploration depth in the geotechnical engineering design.
作者
马平
Ma Ping(RIOH Transport Consultants Ltd.,Beijing 100191,China)
出处
《工程勘察》
2019年第8期15-18,48,共5页
Geotechnical Investigation & Surveying
关键词
花岗岩
风化程度
微地形
风化深度
概率分布
granite
weathering degree
micro-topography
weathering depth
probability distribution
