龙门石窟张夏组鲕粒灰岩特征及溶蚀试验研究

发布时间：2018-01-31 17:38

本文关键词： 张夏组鲕粒灰岩溶蚀规律　出处：《文物保护与考古科学》2017年03期 　论文类型：期刊论文

【摘要】：张夏组碳酸盐岩是龙门石窟主要造窟地层,水岩作用强烈。近年来酸雨进一步加剧了龙门石窟碳酸盐岩的溶蚀。为了对龙门石窟的保护提供相关资料,需进一步探讨鲕粒灰岩的抗风化能力。为此,对东山石窟区所在张夏组分层、取样,进行成分、微观结构分析,并通过室内酸雨溶蚀模拟实验来研究张夏组地层的溶蚀规律。研究表明,龙门石窟张夏组各地层溶蚀差异较大,其单位面积溶蚀质量与钙镁比正相关;鲕粒灰岩风化后表面粗糙度与鲕粒含量密切相关;研究区张夏组鲕粒成分主要为白云石,鲕粒灰岩的抗化学侵蚀能力比普通灰岩更强。通过对张夏组地层岩性的分析及其溶蚀规律的研究,为龙门石窟的保护提供了基础科学资料。
[Abstract]:The carbonate rock of Zhangxia formation is the main grotto formation in Longmen Grottoes, and the action of water rock is strong. In recent years, acid rain has further aggravated the dissolution of carbonate rock in Longmen Grottoes. In order to provide relevant data for the protection of Longmen Grottoes. It is necessary to further study the weathering resistance of oolitic limestone. Therefore, stratification, sampling, composition and microstructure analysis of Zhangxia formation in Dongshan Grottoes are carried out. The dissolution law of Zhangxia formation is studied through indoor acid rain dissolution simulation experiment. The results show that the dissolution of Zhangxia formation in Longmen Grottoes varies greatly, and the dissolution quality per unit area is positively related to the ratio of calcium to magnesium. The surface roughness of oolitic limestone is closely related to the content of oolitic particles after weathering. The oolitic composition of Zhangxia formation is mainly dolomite, and the chemical erosion resistance of oolitic limestone is stronger than that of ordinary limestone. It provides basic scientific data for the protection of Longmen Grottoes.
【作者单位】：中国地质大学;深圳公路交通工程试验检测中心;
【基金】：国家文物局项目(40972183)资助
【分类号】：K879.23;X517
【正文快照】： 0引言龙门石窟具有极高的历史、艺术价值。一千五百多年来,在各种地质营力以及人为因素的作用下,石窟受到各种破坏,造像表面风化严重。刘仁植等[1]在对云冈石窟的研究中认为,石窟表面主要存在表面污染与变色、表面层风化、表面生物病害、修补残留及水斑等5大类污染物病害,而龙

【相似文献】