中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Crack propagation rule of compound type in surrounding rock of circular hydraulic tunnel in hydraulic fracturing process

文献类型:期刊论文

作者Bian, Kang; Liu, Jian
刊名DISASTER ADVANCES
出版日期2013
卷号6页码:256-263
关键词circular hydraulic tunnel crack propagation crack initiation angle critical water pressure maximum circumferential stress criterion
ISSN号0974-262X
英文摘要Mechanism study of crack propagation plays an important role in hydraulic fracturing research. In this essay, the load-bearing analysis of hydraulic tunnel and crack propagation research are combined. After defining inner water pressure of crack propagation in surrounding rock nearby tunnel as critical water pressure, analytical solutions of crack initiation angle and critical water pressure are derived, when crack of I - II compound type propagates in the surrounding rock of circular hydraulic tunnel. Based on the proposed analytical solutions, the influences on crack initiation angle and critical water pressure of crack characteristics (trend, length and depth) and geological environment (geostress and seepage) are researched. The results show that the crack buried depth will impact on the critical water pressure; however, it will not affect the crack initiation angle. Besides, the crack propagation type has no relation with the crack initiation angle. Furthermore, crack propagation of shear-compressive type has more probability than shear-tensile type; especially, along with increase of geostress, the original crack propagation of shear-tensile type may translate into shear-compressive type. Moreover, crack initiation angle will decrease along with reduction of crack length and geostress. And it is advantageous for structural stability of tunnel with shorter crack, higher geostress and bigger buried depth. Finally, the influences of seepage parameters on crack initiation angle and critical water pressure are much less, compared with other influencing factors.
WOS研究方向Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种英语
WOS记录号WOS:000317246200033
出版者DISASTER ADVANCES
源URL[http://119.78.100.198/handle/2S6PX9GI/3430]  
专题岩土力学所知识全产出_期刊论文
国家重点实验室知识产出_期刊论文
作者单位Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式
GB/T 7714
Bian, Kang,Liu, Jian. Crack propagation rule of compound type in surrounding rock of circular hydraulic tunnel in hydraulic fracturing process[J]. DISASTER ADVANCES,2013,6:256-263.
APA Bian, Kang,&Liu, Jian.(2013).Crack propagation rule of compound type in surrounding rock of circular hydraulic tunnel in hydraulic fracturing process.DISASTER ADVANCES,6,256-263.
MLA Bian, Kang,et al."Crack propagation rule of compound type in surrounding rock of circular hydraulic tunnel in hydraulic fracturing process".DISASTER ADVANCES 6(2013):256-263.

入库方式: OAI收割

来源:武汉岩土力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。