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为了阐明凝结和蒸发对金属锈蚀等埋藏物保存的影响以及高CO2和低O2浓度对古墓石室中埋藏物化学反应的影响，在丘陵地区建造了模拟墓室的地下空间，通过对人工石室内外环境条件的测定，得到以下结果：1）冬季由于石室顶板温度低于地面温度，出现结露现象，2）室内相对湿度始终为100%，高于冢山墓; 3）室内O2浓度比室外高3 ~ 4%，CO2浓度约为3%，与冢山墓的结果基本一致;

In order to clarify the influences that condensation and evaporation give on the conservation of the buried properties such as metal rust and the influence that high CO2 and low O2 concentrations give on the chemical reactions of the buried properties in the stone chamber of a tumulus, a underground space simulating a chamber was constructed in a hilly area, and by measuring both the inside and outside environmental conditions of the artificial stone chamber, the followings results were obtained.1) Since the ceiling temperature of the stone chamber was lower than that of the floor in the winter, condensation occurred there, 2) the relative humidity in the chamber was always 100%, which was higher that in Tsugeyama tumulus, 3) the O2 concentration in the chamber was by 3 to 4 % higher than that of the outdoor air, and the CO2 concentration was about 3%, These results were almost the same as those in Tsugeyama tumulus, 4) the rust could be seen on the metal samples in a few months.