摘要
针对重庆大足舒成岩摩崖造像和岩体富集灰尘部位出现的粉化伴随着层状剥落现象,采用X-射线衍射仪(XRD)、X-射线荧光光谱仪(XRF)、傅里叶变换红外光谱仪(FTIR)、环境扫描电子显微镜(SEM)和X-射线光电子谱(XPS)对岩石、岩体风化产物与灰尘样品进行了组成结构表征研究.研究发现灰尘和有害气体干沉降过程中酸性物质能够导致砂岩中钙质胶结物发生溶解,伴随着各种盐类结晶应力,导致岩石表层发生风化.研究成果为西南地区石窟寺保护提供了重要参考数据.
Abstract
The statues of Shuchengyan Rock in Dazu were carved on a whole sand stone and are sheltered and protected by pseudoclassic architecture,but the rock surface,which is covered with a thick layer of dust,has begun to pulverize and peel off.With the help of analytical methods,including X-ray diffraction(XRD),X-ray florescence(XRF)spectrometry,scanning electron microscopy(SEM)and X-ray photoelectron spectrometry(XPS),it was found that the acid substances from dust and the dry deposition of harmful gas could destroy the calcareous cement.This,along with salt crystallization,has caused serious weathering of the rock surface.These research results provide an important reference for the protection of grottoes in southwest China.
基金项目
陕西省青年基金(2021JQ-305)
陕西省重点科技创新团队项目(2022TD-35)
中央高校基本科研业务费专项陕西师范大学重点项目(GK201902014)
陕西省科技厅重点研发项目(2020SF-355)
重庆市大足区基础研究与前沿探索技术预见与制度创新项目(2021ABB1001)
维普
万方数据