Constitutive Model of Rock Dilatancy-Bulking Behavior and Its Application to A Deep Roadway

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	Constitutive Model of Rock Dilatancy-Bulking Behavior and Its Application to A Deep Roadway
	Lu, Xingli 1; Su, Peifang 2; Liu, Quansheng 1
刊名	DISASTER ADVANCES
	2013
卷号	6 页码:185-193
关键词	rock dilatancy-bulking behavior constitutive model characteristic stress mechanics parameters degradation excavation damage zone
ISSN号	0974-262X
英文摘要	Based on the triaxial unloading tests carried out on the rock samples from the Gubei colliery, the evolution characteristics of characteristic stress changing with confining pressure are researched And the critical criterion of rock entering pre-peak damage dilatancy and post-peak bulking deformation is proposed. Then considering the damage degradation process of mechanics parameters during unloading, a rock dilatancy-bulking progressive failure constitutive model (RDPF model) is established and embedded into the distinct element code UDEC, realizing nonlinear numerical calculation function. Moreover, numerical simulation results obtained on the basis of this model are as close as possible to those from experiments, which prove that the constitutive law is reasonable and effective in simulating the failure of rock. Meanwhile, the proposed model was applied to evaluation of an excavation damage zone around a deep roadway for the purpose of checking the performance of the model. The pre-peak damage dilatancy zone and post-peak fracture bulking zone can be distinguished effectively by the proposed model, which is significant to stability analysis and maintenances of deep roadways, and field measurement indicates that the support technique put forward can ensure the stability of the deep roadway, and can be used in practical applications and popularization of other coal mines.
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
出版者	DISASTER ADVANCES
WOS记录号	WOS:000319630500025
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3454]
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	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Changjiang Inst Survey Planning Design & Res, Res Ctr Natl Dam Safety Engn Technol
推荐引用方式 GB/T 7714	Lu, Xingli,Su, Peifang,Liu, Quansheng. Constitutive Model of Rock Dilatancy-Bulking Behavior and Its Application to A Deep Roadway[J]. DISASTER ADVANCES,2013,6:185-193.
APA	Lu, Xingli,Su, Peifang,&Liu, Quansheng.(2013).Constitutive Model of Rock Dilatancy-Bulking Behavior and Its Application to A Deep Roadway.DISASTER ADVANCES,6,185-193.
MLA	Lu, Xingli,et al."Constitutive Model of Rock Dilatancy-Bulking Behavior and Its Application to A Deep Roadway".DISASTER ADVANCES 6(2013):185-193.