张家界大峡谷景区危岩体发育规律与防治建议
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摘要
旅游景区要可持续发展,必须加强地质灾害防治工作,重视基础调查资料。张家界大峡谷景区在2018年"7.11"落石事件之后进行了全面的地质灾害排查,通过无人机航拍与地面调查,景区内主要的地质灾害隐患为小型危岩,峡谷两侧崖壁为危岩体密集发育区;受地貌与岩性条件的控制,危岩体由南至北数量逐渐减弱;落石事件总体上与降水同步,但存在一定的滞后性。基于各危岩体的特征,应分级对各隐患点进行防治,采取避让绕行、监测预警、工程治理等相结合的综合措施。
To promote sustainable development of scenic area,it is imperative to strengthen the control measures for geological hazards,and emphasize the fundamental survey.Through UAV remote image and field investigation,dynamic survey on geological hazard has been completed,after the rockfall in Zhangjiajie grand canyon scenic area on 11 July.The following conclusions are obtained.Mini rockfall is the most important hazard type,that is mainly distributed on limestone cliffs along grand canyon.Unstable rocks would reduce gradually from south to north,with the changes of terrain and lithology.Rainfall is the major cause of disasters caused by rockfall,though rockfall occurrence lagged behind rainfall time in one heavy precipitation event.According to the concrete features,countermeasures should be put forward step by step,including avoiding,monitoring and warning system,engineering government.
To promote sustainable development of scenic area,it is imperative to strengthen the control measures for geological hazards,and emphasize the fundamental survey.Through UAV remote image and field investigation,dynamic survey on geological hazard has been completed,after the rockfall in Zhangjiajie grand canyon scenic area on 11 July.The following conclusions are obtained.Mini rockfall is the most important hazard type,that is mainly distributed on limestone cliffs along grand canyon.Unstable rocks would reduce gradually from south to north,with the changes of terrain and lithology.Rainfall is the major cause of disasters caused by rockfall,though rockfall occurrence lagged behind rainfall time in one heavy precipitation event.According to the concrete features,countermeasures should be put forward step by step,including avoiding,monitoring and warning system,engineering government.
引文
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[9]王梓龙,裴向军,董秀军,等.三维激光扫描技术在危岩监测中的应用[J].水文地质工程地质,2016,43(1):124-129.
[10]程强,胡朝旭,杨绪波.九寨沟地震区公路沿线地质灾害发育规律及防治对策[J].中国地质灾害与防治学报,2018,29(4):114-120.
[2]新华网(记者阮周围).湖南张家界大峡谷景区意外落石致游客2死4伤[DB/OL].2018-07-12,http://www.xinhuanet.com/local/2018-07/12/c_1123117454.htm.
[3]湖南省地质矿产勘查开发局403队.湖南省张家界大峡谷景区地质灾害调查报告[R].2018.
[4]陈天合,王蓉,刘懿莹,等.彝良小草坝旅游景区地质灾害危险性评估[J].地质灾害与环境保护,2018,29(1):23-28.
[5]金书滨,胡涛,乔世范.某大峡谷玻璃桥桥址边坡稳定性分析[J].铁道科学与工程学报,2016,13(11):2197-2203.
[6]郑全锋,丁奕,曹长群.湖南慈利江垭剖面二叠系-三叠系界线层序的沉积微相类型、沉积环境和海平面变化[J].岩石学报,2013,29(10):3637-3648.
[7]湖南省地质建设工程(集团)总公司.湖南省张家界市武陵源核心景区地质灾害调查研究报告[R].2005.
[8]徐昊,朱鹏程,孟明超,等.张家界黄龙洞景区危岩崩塌地质灾害评价及防治措施[J].国土资源导刊,2018,15(1):44-51.
[9]王梓龙,裴向军,董秀军,等.三维激光扫描技术在危岩监测中的应用[J].水文地质工程地质,2016,43(1):124-129.
[10]程强,胡朝旭,杨绪波.九寨沟地震区公路沿线地质灾害发育规律及防治对策[J].中国地质灾害与防治学报,2018,29(4):114-120.