… In addition to the tests on the mechanical properties of rocks or rock masses described above, it is also important to observe the mechanical behavior of rock masses, such as deformation and destruction caused by changes in their state or external conditions. For example, it is necessary to know the stress state (rock mass stress) within rock masses in order to predict earthquakes, prevent gas outbursts in mines, or design large cavities such as underground power plants. The phenomenon in which the rock mass surrounding cavities created in rock masses, such as mining sites, tunnels, underground power plants, etc., gradually deforms due to the action of rock mass stress is called the geocompression phenomenon. … *Some of the terminology that refers to "rock stress" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… これまで述べてきた岩石ないし岩盤の力学的性質に関する試験のほかに,岩盤のおかれている状態や,外部の条件が変化したために発生する変形や破壊などの力学的挙動に関する観測も重要である。たとえば,地震の予知や,鉱山におけるガス突出の予防,あるいは地下発電所などの大空洞の設計のためには,岩盤内の応力状態(岩盤応力)を知ることが要求される。この岩盤応力の作用によって,鉱山の採掘場や坑道,トンネルや地下発電所など,岩盤内に作られた空洞の周囲の岩盤が,徐々に変形したりする現象を,地圧現象という。… ※「岩盤応力」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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