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Acknowledgments
The preparation of this paper received financial support from the National Basic Research 973 Program of China (2013CB036004) and the National Natural Science Foundation (51278071). The financial support is greatly appreciated.
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Huang, F., Yang, X.L. & Ling, T.H. Prediction of Collapsing Region Above Deep Spherical Cavity Roof Under Axis-Symmetrical Conditions. Rock Mech Rock Eng 47, 1511–1516 (2014). https://doi.org/10.1007/s00603-013-0455-y
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DOI: https://doi.org/10.1007/s00603-013-0455-y