深部岩体工程响应的特征科学现象及"深部"的界定

根据实测数据和工程实例介绍了深部岩体工程响应中发生的一系列特征科学现象,这些特征科学现象归蚋为静力特征现象和动力特征现象两类。静力特征现象表现为在深部工程围岩中交替出现若干破裂区和不破裂区;动力特征现象表现为深部矿井中的岩块弹射和岩块冒落等岩爆现象和地下爆破时发生的冲击地压动力事件,即岩体中的工程性地震。文中在阐明动力特征现象本质的同时,介绍了与之紧密相关的岩块系的超低磨擦效应、岩块系的准共振现象和岩块系运动时发出的慢速变住波(摆型波)。最后介绍了时深部岩体工程的“深部”概念的应有理解及其如何科学界定。关键词：深部岩体;工程响应;分区破裂化现象;冲击地压动力现象

The Characteristic Scientific Phenomena of Engineering Response to Deep Rock Mass and the Implication of Deepness

Based on the measured results and case studies, a series of characteristic scientific phenomena, as response to deep rock mass engineering, induced into static and dynamic categories, are intoduced Static scientific phenomenon means the occurrence of fractured zone and non-fractured zone alternatively in the surrounding rocks in deep rock mass engineering, whereas the dynamic ones include the bursts in the form of rock-block projecting and rock couapse in deep shafts, and engineering-induced earthquakes i.e. dynamic event of bump pressureduring underground blasting in rock mass. The essence of dynamic characteristic phenomena are expounded, and low speed reversal waves (pendulum-shaped waves) during rock block movement, are also introduced. At the end, the concept of deepness and its identification are discussed.