摘要
文中对永安某地花岗岩残积土实地考察并取样鉴定,分析抗剪强度,利用理正软件自动搜索功能及野外实际勘察数据对边坡不利滑面进行计算,对比两种计算方法的差异。结果表明:永安地区花岗岩残积土原生结构强度明显,粗颗粒含量影响内摩擦角;软件自动搜索计算的破坏形式为理想状态下的圆弧滑动,而实际勘测计算中,该滑动深度未达到理想状态下的滑动深度;室内试验出的抗剪强度指标不符合实际情况,需多次取值反复计算。
The granite residual soil in Yong’an was inspected and sampled for identification, and the mineral microstructure and composition were analyzed. The unfavorable sliding surface of the slope was calculated by Lizheng software. The results show that the primary structural strength of the granite residual soil in Yong’an is obvious, the cohesion of the granite soil is affected by the fine particles, and the internal friction angle of the granite soil is affected by the content of coarse particles. The destruction form in the software simulation state is the arc sliding in the ideal state, but the actual survey, the sliding depth does not reach the sliding depth in the ideal state. The shear strength index obtained from the indoor test does not conform to the actual situation, and it is necessary to repeatedly calculate the value.
作者
汪翔
Wang Xiang(196 Geological Brigade of Fujian Province,Zhangzhou,Fujian363005)
出处
《江西建材》
2022年第6期133-135,共3页
Jiangxi Building Materials
关键词
花岗岩
残积土
强剪度
边坡
Granite
Residual soil
Strong shear
Slope
