泰山经石峪缓坡石坪片状剥落风化的几何特征  

GEOMETRIC CHARACTERISTICS OF MULTILAYER SHEET-LIKE EXFOLIATION AT GLACIS IN JINGSHIYU,TAISHAN MOUNTAIN

作　　者：王学良[1,2] 张路青[1] 吕继祥[3] 曾庆利[1] 牛健[3] 杨志法[1] 孙学武[3] 

机构地区：[1]中国科学院地质与地球物理研究所中国科学院工程地质力学重点实验室,北京100029 [2]中国科学院研究生院,北京100049 [3]泰山风景名胜区管理委员会,泰安271000

出　　处：《工程地质学报》2010年第2期197-203,共7页Journal of Engineering Geology

基　　金：国家自然科学基金项目(40672190)

摘　　要：在风化、冻融、冲刷等因素的影响下,泰山经石峪缓坡石坪上的《金刚般若波罗蜜经》由原来的2799个字变为现今的1069个字,残留下的经文目前也面临严重风化的威胁。现场调查和实际量测表明,该石坪表面石英闪长岩的多层片状剥落风化是导致经石峪石刻损毁的主要原因之一。片状剥落的层数最多可以达到5层,层厚多在0.5~0.8 cm之间。通过片状剥落风化的几何特征研究,作者给出泰山经石峪缓坡石坪表面的风化破坏模式。即先发生鼓胀离层,而后或直接剥落,或通过横向延展而形成延展离层后再次剥落。The Jing-shi-yu is located at a glacis in Taishan Mountain in Shandong Province,where a total of 2799 Chinese characters for the Buddhism＇s book entitled ＂The Vajracchedika Prajnaparamita Sutra＂ were written by caving on biotite quartz-diorite.Because of the long term natural weathering,freezing and scour,there are only 1069 characters left.The view of the site and measurement shows that the multilayer sheet-like peeling on the diorite glacis is one of the main causes which has been destroying the cut in rock Chinese characters.Sheet-like exfoliation has reached the 5th layers.Each layer has a thickness of 0.5～0.8 cm.The geometric characteristics of multilayer sheet-like exfoliation is examined.A weathering model is put forward for the multilayer sheet-like exfoliation at the site.The model includes the process that the rock bulged firstly,then flaked off directly,or flaked off after the sheet-like due to bulging spreading through the rock.

关 键 词：泰山经石峪 片状剥落 风化 几何特征 

分 类 号：P642.4[天文地球—工程地质学]