广州白云区花岗岩风化带岩土体强度特征

Strength characteristics of rock and soil in the granite weathering zone of Baiyun District,Guangzhou

本文选择广州白云区黑云母二长花岗岩作为试验样本,旨在获取花岗岩岩体强度参数和物理特性等。通过黑云母二长花岗岩单轴和三轴压缩试验,研究了其强度参数,分析了黑云母花岗岩在单轴压缩试验中的小破裂阶段、线性和非线性压缩阶段、破坏阶段特征,基于虎克布朗准则对三轴试验结果进行反演,并结合现场工程地质资料进行综合评价,得出了广州白云区花岗岩岩体风化带的4个强度特征。研究结果有助于更好地评估广州白云区花岗岩岩体的稳定性。

This article selected the biotite monzogranites in Baiyun District,Guangzhou City as the sample material,aiming to infer information related to the strength parameters and physical properties of the granite rock mass.By conducting uniaxial and triaxial compression tests on biotite monzogranites,the paper studied the strength parameters,analyzed the key stages of biotite granites in uniaxial compression tests including small fracture stage,linear and nonlinear compression stage,overall behavior after reaching the peak,and failure stage.In addition,by inverting the triaxial test results based on the Hooke Brown criterion and comprehensively evaluating the relevant data from on-site engineering geological reports,four strength characteristics of the granite weathering zone in Baiyun District,Guangzhou City were obtained.These research results can help better understand and evaluate the stability characteristics of granite rock masses in Baiyun District,Guangzhou.