摘要：Vibration impact drilling technology is an effective means to break up hot dry rock, the rock is affected by both temperature and strain rate under the impact condition, and the mechanical properties of rock cannot be accurately characterized by conventional static mechanical tests. In order to study the dynamic mechanical properties of granite under real-time high temperature and different strain rates, an improved split Hopkinson pressure bar (SHPB) experimental device was developed, the dynamic mechanics test of high temperature granite was carried out. The results show that with the increase of temperature, the fracture frequency in granite first increases and subsequently declines. As the number of impacts increases, the peak stress demonstrates a declining trend, whereas the failure strain displays an ascending trend, signifying a shift from brittle to plastic failure modes. The research in this paper provides theoretical support for granite crushing under high temperature and confining pressure, which is of great significance to field practice. Copyright ? 2025 ARMA, American Rock Mechanics Association.

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发表日期：2025-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：59th US Rock Mechanics/Geomechanics Symposium

参与作者：张宏伟

通讯作者：屈子骁,嵇然,刘栋,王永琦

第一作者：史怀忠,赫文豪

论文类型：会议论文

论文概要：张宏伟,屈子骁,嵇然,史怀忠,刘栋,赫文豪,王永琦，Study on dynamic mechanical properties of granite at real time high temperature，59th US Rock Mechanics/Geomechanics Symposium，2025，/

论文题目：Study on dynamic mechanical properties of granite at real time high temperature