CAJ | 학술논문

塔状岩体是中国西南灰岩山区常见的地质灾害隐患。这类岩体点多面广，破坏频率极高，诱发因素甚多。以甑子岩危岩体为例，基于影像资料，详细剖析了塔状岩体的崩塌失稳过程，重点对其失稳过程中的运动特征开展了研究。认为甑子岩危岩失稳可分为启动、加速、碰撞3个运动阶段，塔状岩体的破坏从底部开始，在上覆岩体下坠过程中，呈现出由下至上、裂缝扩展、破坏传递、空中崩解的特点。研究发现甑子岩塔状岩体的加速度曲线在下降阶段表现出类似缓冲现象的连续负向波动，且不同位置测点的运动特征曲线具有显著的时效差异性，表明塔状岩体在失稳下坠过程中同步发生着破裂、碰撞、解体等变化。
탑상암체시중국서남회암산구상견적지질재해은환。저류암체점다면엄，파배빈솔겁고，유발인소심다。이증자암위암체위례，기우영상자료，상세부석료탑상암체적붕탑실은과정，중점대기실은과정중적운동특정개전료연구。인위증자암위암실은가분위계동、가속、팽당3개운동계단，탑상암체적파배종저부개시，재상복암체하추과정중，정현출유하지상、렬봉확전、파배전체、공중붕해적특점。연구발현증자암탑상암체적가속도곡선재하강계단표현출유사완충현상적련속부향파동，차불동위치측점적운동특정곡선구유현저적시효차이성，표명탑상암체재실은하추과정중동보발생착파렬、팽당、해체등변화。
Tower rock has a kind of common potential geohazard in limestone mountainous area of southwest China. This type of rocks is widely distributed and prone to be damaged.Their collapse can be induced by many factors. Taking Zengziyan perilous rock as example,this paper presents a detailed analysis of the process of tower rock collapse.The analyses of the collapse and especially for its motion characteristic are based on video data.The process of Zengziyan perilous rock collapse can be divided into three motion phases:startup phase,acceleration phase and collision phase.The failure begins at the bottom of tower rock.During the falling process,some features such as cracks propagation and damage transfer from the bottom up are taking place.The acceleration curve of Zengziyan tower rock shows a continuous negative fluctuation similar to buffering in declining stage.And motion characteristic curves of different monitoring locations have significant differences with time,which indicates that there are rupture,collision and disintegration synchronously when the tower rock falling.