| 3DEC modeling on effect of joints and interlayer on wave propagation |
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| 作者姓名： | 王卫华 李夕兵 左宇军 周子龙 张义平 |
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| 作者单位： | School of Resources and Safety Engineering Ce ntral South University Changsha 410083 China，School of Resources and Safety Engineering Ce ntral South University Changsha 410083 China，School of Resources and Safety Engineering Ce ntral South University Changsha 410083 China，School of Resources and Safety Engineering Ce ntral South University Changsha 410083 China，School of Resources and Safety Engineering Ce ntral South University Changsha 410083 China |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家研究发展基金 |
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| 摘 要： | 1 Introduction Natural rock mass is not homogeneous, and it is full of various weak planes with different structures and different geological mechanisms, such as fractures, joints, and cracks. These structural weak planes seriously hinder and affect the …
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| 关 键 词： | 3DEC模拟 波传播 接头 间层 |
| 收稿时间： | 2005-07-05 |
| 修稿时间： | 2005-09-30 |
3DEC modeling on effect of joints and interlayer on wave propagation |
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| WANG Wei-hua,LI Xi-bing,ZUO Yu-jun,ZHOU Zi-long,ZHANG Yi-ping.3DEC modeling on effect of joints and interlayer on wave propagation[J].Transactions of Nonferrous Metals Society of China,2006,16(3):728-734. |
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| Authors: | WANG Wei-hua LI Xi-bing ZUO Yu-jun ZHOU Zi-long ZHANG Yi-ping |
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| Affiliation: | 1. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639789, Singapore;3. School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW 2522, Australia;4. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China;5. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;1. Engineering Geology and Resource Geotechnics Group, Simon Fraser University, Burnaby, BC, Canada;2. Mining & Designing Branch, China Coal Research Institute, Beijing, China;1. Department of Natural Resources and Environmental Engineering, University of Vigo, Campus Lagoas-Marcosende, Vigo, Pontevedra, Spain;2. Department of Metallurgical and Mining Engineering, Universidad Católica del Norte, Antofagasta, Chile;3. Department of Civil Engineering, University of Toronto, Toronto, Canada;1. CDC, NIOSH, 315 E. Montgomery Ave., Spokane, WA, United States;2. Department of Geology & Geological Engineering, Colorado School of Mines, Golden, CO, United States;3. Department of Geological Engineering, Montana Tech, Butte, MT, United States |
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| Abstract: | Firstly, studies on propagation of one-dimensional normally incident wave in rock mass containing no joint, a single joint and two parallel joints were conducted by Three Dimensional Distinct Element Codes(3DEC). By comparison of the modeling results with the theoretical solutions, it has been found that a good agreement between them has been achieved. It is verified that the 3DEC is capable of modeling wave propagation in rock masses. Secondly, propagation of normally incident P-wave across two parallel joints was studied. The modeling results show that transmission coefficient increases with the increasing ratio of joint spacing to wavelength at first, then decreases with the increasing ratio of joint spacing to wavelength, lastly keeps constant. Finally, effect of interlayer on wave propagation is investigated. It is shown that interlayer results in marked attenuation and leading phase, and that attenuation increases with the increasing frequency and the increasing thickness of interlayer. |
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| Keywords: | three dimensional distinct element codes (3DEC) modeling wave propagation joint interlayer |
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