Flat-plate roof collapse of shallow caverns and protective measures: a case study of Longyou ancient siltstone caverns

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• 作者：Zhongjian Zhang ; Lihui Li ; Wenjie Xu ; Yan Fu ; Jun Feng
• 关键词：Longyou rock cavern ; Roof collapse ; Argillaceous siltstone ; Shallow cavern ; Rock weathering ; Cultural relic conservation
• 刊名：Natural Hazards
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：76
• 期：1
• 页码：191-213
• 全文大小：4,043 KB
• 参考文献：1. Canakci, H (2007) Collapse of caves at shallow depth in Gaziantep city center, Turkey: a case study. Environ Geol 53: pp. 915-922 CrossRef
  2. Diederichs, MS, Kaiser, PK (1999) Stability of large excavations in laminated hard rock masses: the voussoir analogue revisited. Int J Rock Mech Min Sci 36: pp. 97-117 CrossRef
  3. Fassina, V, Favaro, M, Naccari, A, Pigo, M (2002) Evaluation of compatibility and durability of a hydraulic lime-based plasters applied on brick wall masonry of historical buildings affected by rising damp phenomena. J Cult Herit 3: pp. 45-51 CrossRef
  4. Fuenkajorn, K, Phueakphum, D (2010) Physical model simulation of shallow openings in jointed rock mass under static and cyclic loadings. Eng Geol 113: pp. 81-89 CrossRef
  5. Gao Q (2009) Stability analysis of Longyou caverns and the best tour route of the caverns Master of science in engineering thesis, Graduate School of Chinese Academy of Sciences
  6. Gao, Q, Wang, J, Yang, ZF, Zhang, LQ, Zhu, JW, Zheng, J, Fu, Y (2009) Stability analysis of the large ancient underground rock caverns in Longyou and the selection of maximum-security routes in the caverns. Rock Soil Mech 30: pp. 2713-2721
  7. Guo, GM, Li, LH, Yang, ZF, Tao, B, Qu, YX, Zheng, J (2005) Weathering mechanism of the cretaceous argillaceous siltstone caverns. Bull Eng Geol Environ 64: pp. 397-407 CrossRef
  8. Hatzor, YH, Talesncik, M, Tsesarsky, M (2002) Continuous and discontinuous stability analysis of the bell-shaped caverns at Bet Guvrin, Israel. Int J Rock Mech Min Sci 39: pp. 867-886 CrossRef
  9. Hatzor, YH, Wainshtein, I, Mazor, DB (2010) Stability of shallow karstic caverns in blocky rock masses. Int J Rock Mech Min Sci 47: pp. 1289-1303 CrossRef
  10. Hawkins, AB, Mcconnell, BJ (1992) Engineering Sensitivity of sandstone strength and deformability to changes in moisture content. Q J Eng Geol 25: pp. 115-130 CrossRef
  Report of the commission on engineering geological mapping. Bull Int As Eng Geol 19: pp. 364-371 CrossRef
  Fast Lagrangian analysis of continua in 3 dimensions. Itasca Consulting Group Inc, USA
  11. Jeng, FS, Wenig, MC, Lin, ML, Huang, TH (2004) Influence of petrographic parameters on geotechnical properties of tertiary sandstones from Taiwan. Eng Geol 73: pp. 71-91 CrossRef
  12. Kn?ffel, DK, Hoffmann, D, Snethlage, R (1987) Physico-chemical weathering reactions as a formulary for time-lapsing ageing test. Mater Struct 20: pp. 127-145 CrossRef
  13. Li, L, Tanimoto, C (2005) Research on the argillaceous cement of sandstone at Longyou grottoes. J Eng Geol 13: pp. 189-194
  14. Li, LH, Yang, ZF, Yue, ZQ, Zhang, LQ (2009) Engineering geological characteristics, failure modes and protective measures of Longyou rock caverns of 2000?years old. Tunn Undergr Space Technol 24: pp. 190-207 CrossRef
  15. Li, LH, Liu, JL, Fu, Y, Yang, ZF, Zhang, ZJ (2012) Eight years test results of weathering rates and time limit prediction of chisel imprints on pelitic siltstone inside five Longyou caverns. J Eng Geol 20: pp. 706-714
  16. Mandala, PK, Singha, R, Maitib, J, Singha, AK, Kumara, R, Sinha, A (2008) Underpinning-based simultaneous extraction of contiguous sections of a thick coal seam under weak and laminated parting. Int J Rock Mech Min Sci 45: pp. 11-28 CrossRef
  17. Maravelaki-Kalaitzaki, P, Karatasios, I, Bakolas, A, Kilikog
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Geophysics and Geodesy
  Geotechnical Engineering
  Civil Engineering
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-0840

文摘

Longyou rock caverns were found and were out of water in June 1992, which located in a small hill near to the north bank of Qujiang River, Zhejiang province, China. A series of flat-plate collapses occurred in the roof of cavern No. 24 from 30 September to 4 October in 2010; and finally, a daylight collapse appeared in the roof with a volume of 250?m3. Site investigation and laboratory tests on the surrounding siltstone indicate that the roof collapse can be attributed to the following adverse factors: (1) large span and shallow depth, (2) rock strength reduction due to water saturation, (3) rock weathering, and (4) dynamic loading caused by the walking of a large number of visitors. In order to protect the complete caverns Nos. 1- which are currently open to visitors, it is suggested to adopt integrated protection system, including (1) selecting the best tour routes and monitor system, (2) surface water drainage system, (3) beam–pillar supporting system, and (4) effective measures to slow weathering.