CAJ | 학술논문

猴子岩水电站地下厂房埋深大、地应力高，厂区地质条件复杂，发育多组结构面和次级断层。为研究地下厂房围岩在开挖过程中的稳定性，采用加拿大ESG微震监测系统进行了实时动态监测。监测数据显示，地下厂房围岩开挖过程中微震事件数量偏多，主要聚集在1号与3号母线洞之间及其上部围岩；同时，结合施工情况和地质条件分析，该区域为识别和圈定的潜在失稳破坏区域。在已有微震资料基础上，借助常规监测数据，解释了围岩变形与微震空间分布之间的内在联系。研究结果可以为地下厂房支护措施提供参考，也为更好地理解和探索高应力岩体损伤变形机制予以借鉴。
후자암수전참지하엄방매심대、지응력고，엄구지질조건복잡，발육다조결구면화차급단층。위연구지하엄방위암재개알과정중적은정성，채용가나대ESG미진감측계통진행료실시동태감측。감측수거현시，지하엄방위암개알과정중미진사건수량편다，주요취집재1호여3호모선동지간급기상부위암；동시，결합시공정황화지질조건분석，해구역위식별화권정적잠재실은파배구역。재이유미진자료기출상，차조상규감측수거，해석료위암변형여미진공간분포지간적내재련계。연구결과가이위지하엄방지호조시제공삼고，야위경호지리해화탐색고응력암체손상변형궤제여이차감。
The underground powerhouse of Houziyan Hydropower Station is characterized as large buried depth, high geo-stress and complicated geological conditions, developed structural planes and secondary faults. In order to study the stability of surrounding rock of underground powerhouse during the excavation, the real-time dynamic monitoring was carried out by using ESG Microseismic Monitoring System of Canada. The monitoring results showed that the number of micro-seismic events during excavation was relatively large and concentrated between No. 1 and No. 3 busbar tunnels and the upper surrounding rock. Mean-while, through the analysis of construction situation and geological condition, this area was recognized and marked as unstable ar-ea. On the basis of existed microseismicity data, by using conventional monitoring data, the inner relationship between deforma-tion of surrounding rock and spatial distribution of microseismicity was explained. The research results can provide reference for subsequent support construction, also help understanding the rock damage and deformation mechanism under high geo-stress sit-uation.