Analysis About Ancient Wall Building Technology And Defence Function Of Diji Castle In Yangcheng

Diji Castle is located in the northwest corner of the town of Run cheng, Yang cheng county, Shanxi Province, The wall around the city was built in Chongzhen10th year(A.D.1638) of Ming dynasty. Diji Castle used several material, like bricks, stones, iron crucible, lime and scrap metal slag to construct the wall, it’s especially strong, in the fortification unique history, it is very rare, so it was called "crucible city","metal city" This reflects both the developed iron industry in Yangcheng County and Runcheng towns in late Ming dynasty, but also reflects the auspices of fortification in line with local conditions, the clever idea of turning waste into treasure and compassionate financial resources of the people of simple and practical philosophy. Because of the unique historical and cultural values of the Diji Castle, in1986and2006, Diji Castle had become the provincial key cultural relics protection units and national key cultural relics protection units. Therefore, in-depth exploration, refining study of Diji Castle wall of the structure, materials, construction methods, the defense function and role, and propose appropriate protection measures and recommendations for the damage to part of the wall segment, both the knowledge practice can influence the lives of hometown.In addition to the Introduction, the content of this article is divided into four parts, The first chapter is to introduce the historical changes of ancient city walls of Diji Castle. The second chapter a detailed account and analysis of the structure and construction techniques of the of Diji Castle walls. It also explains the walls of a variety of building materials and building a wall of a variety of tools. The third chapter of the defense capabilities of Di Ji ancient city walls. The fourth chapter is the protection of the of Di Ji ancient city walls.