A new measurement method of crack propagation rate for brittle rock under THMC coupling condition

作     者：Wei YI Qiu-hua RAO Zhuo LI Qing-qing SHEN 易威;饶秋华;李卓;沈晴晴

作者机构：School of Civil Engineering Central South University Changsha 410075 China 

基　　金：Projects(51474251 51874351) supported by the National Natural Science Foundation of China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2019年第29卷第8期

页      码：1728-1736页

摘      要：A new electrical method of conductive carbon-film(with waterproof and anticorrosion ability)was proposed to continuously measure crack propagation rate of brittle rock under THMC coupling condition.A self-designed coupling testing system was used to conduct THMC coupling fracture tests of the pre-cracked red sandstone specimens(where the temperature is only changed)by this new electrical method of conductive *** results obtained by the energy method coincide well with the test *** the higher the temperature is,the earlier the crack is initiated and the larger the crack propagation rate and accelerated velocity are,which can prove the validity of the new electrical *** new electrical method has advantages of continuously measuring crack propagation rate over the conventional electrical,optical and acoustic methods,and can provide important basis for safety assessment and cracking-arrest design of deep rock mass engineering.

主 题 词：crack propagation rate electrical method of conductive carbon-film thermo-hydro-mechanical-chemical coupling energy method brittle rock 

学科分类：07[理学] 0806[工学-电气类] 070205[070205] 08[工学] 0818[工学-交通运输类] 0815[工学-矿业类] 080501[080501] 0805[工学-能源动力学] 0813[工学-化工与制药类] 0703[理学-化学类] 0814[工学-地质类] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1016/S1003-6326(19)65080-6

馆 藏 号：203774557...