CAJ | 학술논문

锦屏一级、猴子岩等大型水电工程地下洞室群的施工过程中出现岩爆、塌方、大变形及支护后喷层、围岩开裂等围岩变形破坏现象，对围岩变形失稳模式及针对性的调控措施缺乏系统、总结性的研究。在收集大岗山、锦屏一级、猴子岩、官地等多个典型水电工程地下洞室群施工地质、设计、物探、监测资料及现场调查的基础上，从控制因素上将围岩失稳模式分为岩体结构控制型重力驱动型、应力驱动型、复合驱动型3种类型；从破坏主要发生的工程部位将破坏模式归纳为5个部位、16种基础模式；以猴子岩水电工程主厂房动态调控为实例，说明所提出的调控措施的有效性和可行性。该研究成果可为大型地下洞室动态设计提供借鉴，为施工安全的保障提供理论依据，具有重要的工程意义。
금병일급、후자암등대형수전공정지하동실군적시공과정중출현암폭、탑방、대변형급지호후분층、위암개렬등위암변형파배현상，대위암변형실은모식급침대성적조공조시결핍계통、총결성적연구。재수집대강산、금병일급、후자암、관지등다개전형수전공정지하동실군시공지질、설계、물탐、감측자료급현장조사적기출상，종공제인소상장위암실은모식분위암체결구공제형중력구동형、응력구동형、복합구동형3충류형；종파배주요발생적공정부위장파배모식귀납위5개부위、16충기출모식；이후자암수전공정주엄방동태조공위실례，설명소제출적조공조시적유효성화가행성。해연구성과가위대형지하동실동태설계제공차감，위시공안전적보장제공이론의거，구유중요적공정의의。
Rockburst,collapse,large deformation of shotcrete layers after support,rock cracks and other damage phenomena appeared in the underground caverns of Jinping I,Houziyan and other large hydropower projects during construction. Systematic researches have seldom been performed on the deformation and instability modes of surrounding rock and the controlling measures. Based on the collected geological and design data,the geophysical surveying,the monitored data and the field investigation in underground caverns of Dagangshan,1st stage of Jinping,Houziyan,Guandi and other typical hydropower projects during construction,the failures of surrounding rock are divided into 3 modes:the rock structure controlled and gravity-driven mode;the stress-driven mode and the mixed mode according the controlling factors. The failure modes can also be divided into 16 basic modes according to the main project sites where instability occurs in 5 areas of the caverns. The proposed controlling measures were used in Houziyan project to show their feasibility and effectiveness.