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Issue:
An Elementary Theory Research of Hydraulic Fracture in Rock Mass
Author(s):
XIE Xinghua
,
SU Baoyu
,
ZHU Ruxiong
Pages:
308
-
313
Year:
2004
Issue:
z1
Journal:
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Keyword:
岩体
;
水力劈裂
;
开裂判据
;
能量释放率
;
Abstract:
从基本概念出发,认为水力劈裂以应力集中为特征,以裂缝的局部扩展为表现形式.水力劈裂是渗流应力耦合作用的一个方面,讨论了岩体结构在静水压力作用下的三种破坏形式,分别具有不同的破坏机理.本文从能量守恒定律出发,推导了单裂缝扩展过程中的能量转化关系,及裂缝扩展的控制方程.引入断裂力学裂缝扩展的能量释放率概念,给出了岩石裂缝扩展的判据.
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