On the Geology of Oya Building Stone and Its Destruction by Excavation
On the Geology of Oya Building Stone and Its Destruction by Excavation
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论大谷石的地质及其开挖破坏
DOI：
10.5110/jjseg.7.129
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发表时间：
1966
期刊：
影响因子：
--
通讯作者：
Takeshi Ando
中科院分区：
文献类型：
--
作者：
Takeshi Ando
为了防止建筑石材的挖掘所造成的灾害，进行了许多基础性的调查。1）Oya石头从奥登时代起就被挖掘作为建筑石材，因此在地下留下了许多扩大的洞穴。2）Oya石头分为三个层，硬粗（Koshitu-arame），软粗（Nanshitu-arame）和细（Saime）纹理，从上到下。3）北西向和北东向裂隙系统是典型的裂隙系统，裂隙中充填有裂隙粘土，即斜发沸石。细结构岩石中裂隙系统的分布图见图1和图2。
For the purpose of disaster prevention caused by excavation of Building stone, many fundamental investigations were carried out.1) The Oya stones have been excavated as building stones since olden time and as a result many enlarged caves have been remained under ground.2) Oya stones are divided into three stratum, hard-coarse (Koshitu-arame), soft-coarse (Nanshitu-arame) and fine (Saime) textures, in ascending order. Especially, in the portion of the fine texture stones, rock-falls and depressions were occurred remarkably.3) Characteristic fracture systems are of NW and NE directions filled by fissure clay, that is, clinoptirolite. The distribution chart of the fracture systems in the fine texture rock are illustrated in Figs.