The study on the quarry technology and the stone buildings in Japan

日本是一个火山之国，花岗岩和凝灰岩是人们熟悉的很容易获得的材料。在日本建造了石墙、石库、古墓葬和城堡的石制堡垒等石制设施。由于日本石矿采石场的关闭增加，熟练的石匠也面临着老龄化问题，手工挖掘时代的石材技术传承是一个迫切需要解决的问题。与木结构建筑相比，对砖石结构的研究还不够。在之前的东日本大地震中，由于缺乏研究，许多能够复制的石头仓库被拆除。收集了有关日本采石场的基本资料，并对枥木县的大屋地区和千叶县的金谷地区的采石场进行了调查，作为对采石场技术和石头仓库的调查。

Japan was a country of the volcano, and granite and the tuff were familiar materials easily obtained. Several stone facilities, for instance the stone wall, the stone warehouses, the old burial mounds, and the stone fortress of the castle, had been constructed in Japan. The succession of the stone technology in the hand digging age is an urgent problem because the close of the stone quarry in Japan has increased and the skilled masons also are facing aged. The study on the masonry is not enough compared with that of the wooden building. A previous the Great East Japan Earthquake caused the demolition of a lot of stone warehouses that were able to be reproduced due to the lack of the study.The fundamental documents concerning the stone quarries in Japan were collected,and as a survey of the quarrying technique and of the stone warehouse, the investigation of the quarries were carried out at Oya region in the Tochigi Prefecture and at Kanaya region in the Chiba Prefecture.