Study on immature earthen sites reinforced with wood anchor;

On reinforcement and conservation measures of earthen archaeological site;

The preparation of a new consolidation material for earthen archaeological site and the evaluation of its effectiveness;

A review with 19 references is given on the consolidation materiasl on earthen archaeol-ogical site including the basie rules of the consolidation materials use and of three types thecomsolidation materials,inorganic materials,irganic materials and inorganic-organic hybrid materials,based on the researches of them for earthen archaeological site.

It is necessary to study the reinforcement of the earth sites.

The earth site is most difficult to protect in the Site.

As one of the world s most ancient nations, Chinese has created a very brilliant human civilization and left many Earth sites.

Study on consolidation and conservation of historical earthen sites in moisture circumstances conservation of Tangshan Site in situ;

In the protection of the earthen sites,testings of colors change(also chrominance) and breathability in before and after treatment are two core factors that are judged reinforcement material consolidates effect superior or inferior and two key technologic indexes that are built evaluating system.

Through a series of investigations,the most important reasons that lead to soil ruins,which had been damaged in north-west arid area of our country,are natural causes and human elements,and the instruction slump is the major represent form.

Soil ruins are a very important part of archeological inheritance, and it is the most difficult type to be protected.

With the acceleration of social economic construction and the urban development, living environment of earthen site is greatly reduced.

By the examination of engineering practices,ideal result has been obtained after applying these protective techniques;The experience may be provide some methods to the reinforcement of earthen sites in the northwestern China.