摘要
冠岩是我国著名的旅游洞穴,以洞内观光电梯、小火车、地下河构成的"水陆空"游览为特色,每年接待游客40余万人。洞内地形复杂,岩体多被裂隙切割成孤立的岩块,化石性钟乳石发育,其开发过程中建设了大量人为工程。近年来,冠岩发生了几起危岩崩塌事故。经调查,目前洞内对旅游线路构成威胁的危岩计70块(段)。研究发现,洞顶、洞壁危岩出现的几率近相同,而洞穴大厅出现的几率远大于廊道;天然洞段发生的危岩规模大、数量少,而人工开凿段则表现为数量多、规模小;人为因素诱发的危岩多于自然条件下形成的危岩。提出了以预防、加固为主的危岩防治原则。
As a famous sight-seeing cave in China, Guanyan attracts more than 400 000 tourists every year. The cave is famous for its underground train, elevator, motor-trolley and subterranean fiver tour, which means great amount of manmade constructions inside the cave. Steep topography, fissured rocks and fossil stalactites are favorable to rock-fall disaster. In recent years, several rock-falls happened in Guanyan cave. 70 dangerous route, were classified after site investigation. The location, influential factors occurrence probability, cave hall is greater than passage and human-induced rocks, which had potential threat to touring and forming mechanism were studied. Up to is more than natural occurred. Comparing to excavated cave, dangerous rock is usually less in quantity and large in scale in natural cave. For prevention of rock-fall in cave, effective measures are taking precautions and dangerous rock reinforcement （anchoring） instead of simply removing.
出处
《中国地质灾害与防治学报》
CSCD
2007年第3期44-48,共5页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金委员会
二滩水电开发有限责任公司雅砻江水电开发联合研究基金项目(50539080)
关键词
旅游洞穴
广西桂林冠岩
危岩
特征
防治对策
sight-seeing cave
Guanyan in Guilin City, Guangxi Province
dangerous rock
characteristic
preventionmeasure
