岩石扩容现象与超声横波特征参数相互关系研究评述  

A STUDY OF THE RELATIONSHIP BETWEEN THE DILATANCY OF ROCKS AND THE CHARACTERISTIC PARAMETERS OF UTRASONIC WAVE

作　　者：刘维国[1] 单钰铭[1] 傅荣华[1] 周家纪[1] 常嗣和[1] 苏金明[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,成都610059

出　　处：《成都理工大学学报（自然科学版）》2003年第1期87-91,共5页Journal of Chengdu University of Technology: Science & Technology Edition

摘　　要：介绍了岩石扩容现象与超声横波特征参数相互关系相关专业领域研究的现状及其应用。在用横波速度最大值 ( vsmax)来分析岩石微裂纹初始扩展时的应力值 (应力门槛值 )新方法的基础上 ,建议利用主动的人工横波震源、应力门槛值、vsmax后的横波速度值与岩石裂纹加速发展的同步减小特性 ,更深入地进行地震破裂丛集及前兆特征的研究 ,有可能建立地震和地质灾害性预报的新方法。并提出利用传统方法研究岩石扩容机理、应力门槛值、泊松比等的同时 ,进行岩石扩容现象。This paper introduces some new developments and their tectonic significance in the study of the ralationship between the dilatancy of rocks and the characteristic parameters of shear wave under formation conditions, in rock mechanics and geophysics. Baced on a new method to analyse the stress value of stress induced microcracks by the peak value of the S wave velocity, the authors suggest, by using this man made S wave focus of an earthquake and the special property, that the S wave velocity peak value illustrates the production of new microcracks and the velocity begins to decrease with the expansion of microcracks rupture in the test sample. To make a through rsearch of earthquake crack nucleation and its precursor will be lead to take shape the new calamity forecasting method of the seismic and geology. It also advances a new thinking that finds the Poisson's ratio corresponding to stress value is cut down.

关 键 词：岩石扩容 超声横波 特征参数 相互关系 岩石破裂 应力门槛值 岩石力学 扩容机理 

分 类 号：TU452[建筑科学—岩土工程]