摘要
基于岩石变形记忆效应的变形率变化法(DRA法),是一种利用岩芯对原地质赋存初始地应力场信息的记忆开展测量并通过室内岩芯循环压缩试验所得应力-应变数据来读取岩芯先期应力的方法,此方法具有诸多优势,为准确便捷测量初始地应力提供了全新的思路,国内外一系列实践应用证明了其巨大的潜力。我国关于DRA法的研究及工程应用还处于刚起步阶段,其基础理论在我国尚未建立,因此开展DRA法的理论、应用的进展研究具有重要意义。主要包括:详细叙述了DRA法的基本原理及其测量地应力关键技术;分析得出了提高DRA法测量精度的方法;将DRA法与其他地应力测量方法进行比较,分析得到其优势与局限性;阐述了DRA法存在的挑战及未来研究方向。为推动国内DRA法研究的开展及工程初始地应力实测应用提供参考依据。
The deformation rate analysis(DRA method)is a method based on the rock deformation memory effect.This method measures in-situ geostress field information of the original geological deposit and that information is read by the stress-strain data obtained from the indoor core cyclic compression test.This method has many advantages,which provides a brand-new idea for accurate and convenient measurement of in-situ geostress.A series of practical applications in China and other countries have proved its great potential possibility.However,the research and engineering application of this method are still in its infancy,and its basic theory has not yet been established in China.Therefore,it is of great significance to carry out research on the theoretical research and application of the DRA method.This paper gives the basic principle of DRA method and key points of DRA method for measuring in-situ geostress;analyses how to improve the accuracy of DRA method;analyzes its advantages and disadvantages comparing with other in-situ geostress measurement methods;elaborates the existence challenges and future research directions of DRA method.It provides a reference for promoting the development of DRA research and the application of in-situ geostress measurement in engineering in China.
作者
朱淳
王海军
钟凌伟
汤雷
任旭华
Zhu Chun;Wang Haijun;Zhong Lingwei;Tang Lei;Ren Xuhua(School of Earth Sciences and Engineering,Hohai University,Nanjing 210098,P.R.China;College of Petroleum Engineering,Xi'an Shiyou University,Xi'an 710065,P.R.China;Nanjing Hydraulic Research Institute,Nanjing,210029 P.R.China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,P.R.China)
出处
《地下空间与工程学报》
CSCD
北大核心
2022年第S02期865-873,共9页
Chinese Journal of Underground Space and Engineering
基金
陕西省自然科学基础研究计划项目(2022JQ-304)
中央高校基本科研业务费(B220202056)
关键词
初始地应力
岩石变形记忆效应
变形率变化法
岩石力学
in-situ geostress
rock deformation memory effect(DME)
deformation rate analysis(DRA)
rock mechanics
