| 邵东桥,李永杰,张洪伟,吕 恒,祁进财,王朝鹤.保全寺石窟岩体特性及危岩发育特征研究[J].甘肃地质,2025,(1):52-60 |
| 保全寺石窟岩体特性及危岩发育特征研究 |
| Characteristics ａnd Development ｏf Dangerous Rock Body ｉn Baoquan Temple Grottoes |
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| DOI： |
| 中文关键词: 石窟 岩体特性 危岩 结构面 差异风化 保全寺 |
| 英文关键词:grotto rock properties hazardous rocks structural surfaces differential weathering |
| 基金项目:甘肃省重点文物保护项目 |
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| 摘要点击次数: 80 |
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| 中文摘要: |
| 甘肃省境内的石窟主要开凿于砂岩中，石窟赋存岩体的稳定性是影响其安全长久保存的重要因素。在分析保全寺石窟地质环境条件的基础上，通过室内试验检测岩体的矿物成分、物理和力学特性，研究其与表层风化、结构面的形成发展和差异风化之间的关系。认为砂岩的石英含量与其风化速度具有一定的相关性，石窟危岩的形成及破坏模式主要受岩体结构面的控制。砂岩和泥岩之间的差异风化作用导致崖体底部形成较大的岩腔，上部砂岩失去支撑，形成悬空状，促使危岩的形成及上部岩体的不断破坏。这种破坏模式不断循环反复，最终会导致石窟的破坏。 |
| 英文摘要: |
| The grottoes in Gansu are mainly excavated in sandstone rock formations, and the stability of the rock bodies supporting the grotto temples is an important factor affecting their safe and long-lasting preservation. On the basis of analyzing the geological and environmental conditions of the Baoquan Temple Grottoes, the article uses tests to study the mineral composition, physical and mechanical properties of the rock body, and its relationship with surface weathering, the formation and development of structural surfaces, and differential weathering. The quartz content of sandstone has a certain correlation with its weathering rate, and the formation and destruction pattern of the dangerous rocks in the grottoes are mainly controlled by the structural surface; the differential weathering between sandstone and mudstone leads to the formation of a larger rock cavity at the bottom of the cliff body, and the upper sandstone loses its support, forming a cantilever shape, which accelerates the formation of the dangerous rocks and the continuous destruction of the upper rock body. This pattern of destruction repeats itself over and over again, eventually leading to the destruction of the grotto. |
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