Investigation And Study On The Preservation Of Earthen Sites In Hanyangling

In this paper,under the guidance of the new idea of the protection of cultural relics,according to the characteristics of Hanyang relics,make a comprehensive investigation of the Preservation status in Hanyagling,which including the whole regional environment and soil properties,properties of construction materials.Because the ways of the sites are different,so take the different investigation methods,through the investigation found that the sites located in a mild climate,moderate rainfall,industrial pollution and agricultural pollution source distribution around the complex environment.The site soil belongs to the hard-silty clay,and the soluble salt content is generally higher.Soil samples contain Si,Na,Mg,Al,S,K,Ca,Fe,Ba and other elements.The basic mineral composition of the spalling and collapse bodies has not changed,and the main reason for soil degradation is the physical weathering process of water and salt migration.The preservation of the basic open site has been covered by plants,which have their own characteristics of vegetation types and distribution,and part of the exposed area appear the phenomenon of collapse and weathering;the sites of the indoor semi closed preservation conditions are preserved well,and the Weathering layer thickness on the ruins surface is thin;the sites of underground closed preservation conditions preserved good,although they still occur cracks and peeling temperature disease,its development degree is relatively low.The causes of disease in these sites include changes in temperature and humidity,soluble salts,biological damage,and man-made damage.