摘要
为研究危岩群体崩塌因素,给工程施工提供依据,以新疆喀什地区盖孜河狭窄区域的危岩群体为研究对象,用离散元软件对该区危岩群体崩塌过程进行了模拟。结果表明:危岩破碎度与崩塌时间呈正相关,危岩高度、震动强度以及背立面角度与崩塌时间呈负相关,节理面角度对崩塌时间的影响不明显;另外,块体发生崩塌的位移角与块体大小有着直接关系,块体大小会直接决定崩塌位移角的取值范围,崩塌位移角会随着节理间距的增大而增大。研究结果可为盖孜河治理和中巴公路养护工程方案的设计提供理论参考。
In order to study the collapse factors of perilous rock groups and provide the basis for engineering treatment,the collapse process of perilous rock groups in the narrow area of Gaizi River in Kashgar area of Xinjiang was simulated by discrete element software.The results showed that the fragmentation degree of perilous rock was positively correlated with the collapse time,while the perilous rock height,and were negatively correlated with the collapse time,and the influence of joint plane angle on the collapse time was not obvious.In addition,the rock mass collapsing displacement angle was directly related to its size,which directly determined the range of collapsing displacement angle,and the collapse displacement angle increased with the increase of joint spacing.The research results can provide theoretical reference for the Gaizi River management and the maintenance of China-Pakistan highway.
作者
纳曼·麦麦提
米红林
NAMAN·Maimaiti;MI Honglin(School of Civil Engineering,Kashgar University,Kashgar 844006,China;School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《人民长江》
北大核心
2021年第2期99-104,127,共7页
Yangtze River
基金
新疆维吾尔自治区高校科研计划青年项目(XJEDU2018Y040)
新疆维吾尔自治区自然科学基金面上项目(2019D01A02)
国家自然科学基金项目(11842007)。
关键词
危岩群体
崩塌
离散元分析
盖孜河
中巴公路
perilous rock groups
collapse
discrete element analysis
Gaizi River
China-Pakistan highway
