地质雷达在隧道式锚锭锚洞坍塌松散区探测中的应用
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- 英文论文题名：The application of ground penetrating radar to detect loose areas for the collapse of tunnel-type anchorage hole
- 论文作者：李耀华 ; 张维平 ; 郭密文 ; 李旭 ; 李军
- 英文论文作者：Li Yaohua ; Zhang Weiping ; Guo Miwen ; Li Xu ; Li Jun ; Beijing Aerospace Geptechnical Engineering Institute Co. ; Ltd. ; Yunnan Aerospace Engineering Geophysical Detection Co. ; Ltd.
- 年：2016
- 作者机构：北京航天勘察设计研究院有限公司;云南航天工程物探检测股份有限公司;
- 论文关键词：地质雷达 ; 隧道式锚锭 ; 锚洞坍塌 ; 信号后处理 ; 三维成像
- 英文论文关键词：ground penetrating radar(GPR) ; tunnel-type anchorage ; collapse of anchor hole ; signal post-processing ; three dimensional imaging
- 会议召开时间：2016-09-05
- 会议录名称：2016年全国工程勘察学术大会论文集（上册）
- 英文会议录名称：Geotechnical Investigation & Surveying
- 语种：中文
- 分类号：U442
- 学会代码：ZJKC
- 会议名称：2016年全国工程勘察学术大会
- 会议地点：中国山西太原
- 主办单位：全国建筑工程勘察科技情报网、全国建筑工程勘察科技情报网华北情报站、中国建筑学会工程勘察分会
- 学会名称：中国建筑学会工程勘察分会
- 页数：6
- 文件大小：2085k
- 原文格式：O
- 会议级别：全国
摘要
隧洞围岩质软破碎,开挖时导致锚塞体拱脚开裂并延展,造成锚洞坍塌,严重影响锚锭山体的稳定性,为安全运营埋下隐患安全。采用地质雷达在锚洞坍塌部位进行环状定向辐射探测,圈定出围岩坍塌松散区,为进一步加固处置提供依据。基于地质雷达信号后处理技术对探测目标介质体的频响特征分析,可判定围岩体的完整性,查明了坍塌空间分布及影响范围,应用三维成像技术反演出坍塌诱发的空腔松散区空间分布及围岩富水状况。根据钻孔验证证明了地质雷达探测结果的准确性。
Because surrounding rock of tunnel is soft and crushing,this leads to cracking and extending at the root of anchoring concrete during excavation,and anchorage hole collapses,all of these effect seriously the stability of anchorage mountain,also it hides security risks for safe operation.The ground penetrating radar was applied for directional radiation surveying with annular at the collapse location in this paper,detected region of loose rock collapse and provided technical basis for further reinforcement.The integrity of the surrounding rock,the space distribution and influence scope were determined through analyzing the character of frequency response for medium body based on the technology of signal post-processing,the space distribution and water-bearing condition of loose areas led by collapse condition were inversed through using three dimensional imaging technologies.According to confirmation core certify the correct of GPR detecting results.
Because surrounding rock of tunnel is soft and crushing,this leads to cracking and extending at the root of anchoring concrete during excavation,and anchorage hole collapses,all of these effect seriously the stability of anchorage mountain,also it hides security risks for safe operation.The ground penetrating radar was applied for directional radiation surveying with annular at the collapse location in this paper,detected region of loose rock collapse and provided technical basis for further reinforcement.The integrity of the surrounding rock,the space distribution and influence scope were determined through analyzing the character of frequency response for medium body based on the technology of signal post-processing,the space distribution and water-bearing condition of loose areas led by collapse condition were inversed through using three dimensional imaging technologies.According to confirmation core certify the correct of GPR detecting results.
引文
[1]任会.隧道锚锭结构设计理论与工程应用研究[D].长沙:湖南大学,2009.
[2]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].煤田地质与勘探,2008,36(4):57-61.
[3]刘东坤,巨能攀,霍宇翔.地质雷达在不同介质填充下的频谱差异分析[J].现代隧道技术,2013,50(5),23-28.
[4]杨峰,彭苏萍,冯正和,等.基于谱剖面技术的路基病害地质雷达探测方法研究[J].公路交通科技,2007,24(5):6-9.
[5]李耀华,张维平,李旭.基于谱能分析法的地质雷达信号后处理技术应用研究[C].2015年中国地球科学联合学术年会论文集[A].中国北京:中国地球科学联合学术年会,2015,1487-1490.
[2]肖宏跃,雷宛,杨威.地质雷达特征图像与典型地质现象的对应关系[J].煤田地质与勘探,2008,36(4):57-61.
[3]刘东坤,巨能攀,霍宇翔.地质雷达在不同介质填充下的频谱差异分析[J].现代隧道技术,2013,50(5),23-28.
[4]杨峰,彭苏萍,冯正和,等.基于谱剖面技术的路基病害地质雷达探测方法研究[J].公路交通科技,2007,24(5):6-9.
[5]李耀华,张维平,李旭.基于谱能分析法的地质雷达信号后处理技术应用研究[C].2015年中国地球科学联合学术年会论文集[A].中国北京:中国地球科学联合学术年会,2015,1487-1490.