华北水利水电大学学报（自然科学版）2024，Vol.45Issue(3)：77-84,8.DOI:10.19760/j.ncwu.zk.2024032
花花岩组滑坡堆积体蠕变特性研究
Study on Creep Characteristics of Huahuayanzu Landslide Deposits
摘要
Abstract
The Huahuayanzu landslide is an accumulation landslide.The slide body of this landslide consists of loose soil and rock accumulations.It has obvious creep characteristics in the slow deformation of the landslide.To study the creep characteristics of the landslide deposit and determine its long-term strength index,direct shear creep tests were conducted on the landslide deposit.The results are as follows.The landslide accumulation exhibits obvious deceleration creep and steady-state creep characteristics in direct shear creep tests.Under larger horizontal loads,it will enter an accelerated creep state.The creep curve was fitted by Burgers model and improved Burgers model.The results show that the improved Bur-gers model can better fit the nonlinear accelerated creep process,and the fitting curve is closer to the actual creep curve.The long-term strength range of landslide deposits is determined by the transition creep method.The long-term strength of landslide deposits is 39%to 59%of its instantaneous shear strength.关键词
花花岩组/堆积体滑坡/堆积体/蠕变模型/长期强度Key words
Huahuayanzu landslide/accumulated landslide/accumulated deposits/creep model/long-term strength分类
建筑与水利引用本文复制引用
董金玉,景茂,赵亚文..花花岩组滑坡堆积体蠕变特性研究[J].华北水利水电大学学报（自然科学版）,2024,45(3):77-84,8.基金项目
国家自然科学基金项目(U1704243,41741019) （U1704243,41741019）
河南省科技攻关项目(192102310006). （192102310006）
