关键词: 危岩群体; 崩塌; 离散元分析; 盖孜河; 中巴公路;

Abstract: 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.

Key words: perilous rock groups; collapse; discrete element analysis; Gaizi River; China-Pakistan highway;