王沛涛， 张虎元^*， 赵秉正

（  兰州大学 西部灾害与环境力学教育部重点实验室，甘肃 兰州 730000；  ）

摘要： 敦煌莫高窟地处风化侵蚀严重的沙漠气候区，莫高窟崖体由于持续的风化作用，落石灾害多发。本文在实地的工程地质勘察、落石的现场试验结果以及计算机模拟结果的基础上，提出莫高窟落石的主要来源，进行了落石的成因分析；就现今防治落石灾害的多种工程措施进行了优缺点对比，根据莫高窟现有洞窟的实际地质情况提出了适用于莫高窟窟区的落石灾害防治措施，为构筑莫高窟风险预警体系提供参考依据。
关键词： 地质工程；落石；现场试验；数值模拟；防治措施

WANG Peitao， ZHANG Huyuan^*， ZHAO Bingzheng

（  Key Laboratory of the Western Disaster and Environmental Mechanics, Ministry of Education,Lanzhou University, Lanzhou, Gansu 730000；  ）

Abstract： Mogao Grottoes is located in desert climate area of western China where natural weathering forces are extremely severe, which is subject to rockfall hazards on the cliff of Mogao Grottoes because of the continued weathering influences. In this paper, the base of field engineering geological surveys and in-situ rockfall test as well as the computer simulation results, we clarify the rockfall resource zones and genetic mechanism. According to the real situation of Mogao Grottoes, advantages and disadvantages of some commonly used rockfall protection measurements were compared to proposed responding protection measurements to control rockfall hazard in Mogao Grottoes, and to provide the basis for constructing the risk early-warning system.
Keywords： geology engineering; rockfall；field test；numerical simualtion; measurements

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