1.1a福州大学，紫金地质与矿业学院，福州 350116;2.1b福州大学，地质工程福建省高校工程研究中心，福州 350116;3.1c福州大学，土木工程学院，福州 350116;4.中国电建集团 北京勘测设计研究院有限公司,北京100024
冯新（2000—），男，硕士研究生，主要从事石质文物稳定性方向研究，(E-mail)fengxinguanghong@126.com。
刘成禹，男，教授，博士生导师，(E-mail)Liuchengyuphd@163.com。
国家自然科学基金（41272300）。
1.1aZijin School of Geology and Mining, Fuzhou University, Fuzhou350116, P. R. China;2.1bFujian Provincial Universities Engineering Research Center of Geological Engineering, Fuzhou University, Fuzhou350116, P. R. China;3.1cCollege of Civil Engineering, Fuzhou University, Fuzhou350116, P. R. China;4.PowerChina Beijing Engineering Corporation Limited, Beijing100024, P. R. China
Supported by National Natural Science Foundation of China (41272300).
川渝地区石窟主要开凿在砂泥岩交替出露的山体崖壁上，崖壁上部自然岩体窟檐对下部造像区具有一定的保护作用。为分析窟檐在自然环境下的稳定性情况，在对川渝地区石窟地层特点、窟檐岩体结构、窟檐尺寸范围及力学参数等调查基础上，利用FLAC3D对窟檐稳定性进行计算分析后发现，依据窟檐结构特点的差异、卸荷裂隙是否存在以及发育位置的不同，川渝地区石窟窟檐主要有3种破坏模式：悬臂拉断破坏、倾倒破坏、软弱基座压溃破坏。进一步分析得到每种破坏模式的破坏特点、影响窟檐稳定性的主要因素及影响规律。最后，给出窟檐稳定性评价参考表，可为川渝地区石窟窟檐现场勘察和稳定性评价提供参考。
The grottoes in the Sichuan and Chongqing area are mainly carved into cliff walls where alternating layers of sandstone and mudstone are exposed. The natural rock eaves in the upper part of the cliffs provide protection for the sculptures in the lower part. To assess the stability of these eaves under natural conditions, this study investigates the stratigraphic characteristics, rock mass structure, dimensions and mechanical parameters of the eaves. With using FLAC3D for calculation and analysis, three main failure modes are identified: cantilever tensile failure, toppling failure and soft foundation crushing failure. The study also identifies the damage characteristics, key factors affecting eaves stability and their effects. A stability evaluation reference table is provided for field investigations and stability evaluation of grottoes eaves in the Sichuan and Chongqing area.
冯新,刘成禹,吴昌宇,麻润杰.川渝地区石窟窟檐的稳定性研究[J].重庆大学学报,2024,47(10):138-148.
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