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| SIMULATION OF RANDOM 3D DISCONTINUITIES NETWORK BASED ON DIGITALIZATION AND ITS VALIDATION TEST |
| GUO Liang1，2，LI Xiaozhao1，2，ZHOU Yangyi1，2，ZHANG Yangsong3，SUO Peisi1，2，TU Chunchun3 |
(1. School of Earth Sciences and Engineering，Nanjing University，Nanjing，Jiangsu 210093，China；2. NJU-ECE Institute
for Underground and Geo-environment，Nanjing，Jiangsu 210093，China；3. Department of Civil Engineering，Nanjing University of Science and Technology，Nanjing，Jiangsu 210094，China) |
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Abstract The confidence level of seepage calculations in rock mass is directly influenced by the reliability of corresponding discontinuities network models. A detailed investigation on rock mass discontinuities was launched into the well outcropped granite body in Chinese high-level radioactive waste repository candidate site in Beishan of Gansu province using new digital techniques，such as GPS(global positioning system) and GIS(geographical information system). And the three-dimensional random discontinuities network model was established after the digital statistics processing of over 10 000 discontinuities acquired in the investigation. At last，the accuracy of the model was graphically and numerically validated. The results show that compared with the traditional method，the digital measurement processing means can overcome the insufficiency of statistical sample size and precision， and can complete the detailed investigation of regional rock mass discontinuities very well. And the random model with ideal test effect is more suitable for numerically simulated calculations of mechanical properties and seepage.
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2015, Vol. 34 
