Application of the landsonar to detecting hidden hazards of tunnel base on high-speed railway in karst areas
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摘要: 沪昆高铁的麻拉寨隧道和贵广高铁的高天隧道在联调联试阶段均发生不均匀沉降和底鼓现象，为了摸清隧道基底致灾原因并对注浆质量进行检测研究，采用陆地声纳法在隧道岩溶段进行了检测，在基底下方探测出较多中、小溶洞，多组中、小断层延伸到基底下方使溶洞之间互相连通，由于雨季隧道周边水压力强烈的变化，造成了隧道不均匀沉降与底鼓，根据数据图像的特殊反应确定了破碎区域和浆注入区，依据探测结果确定治理方案并在治理施工中得到验证。Abstract: It is reported that uneven subsidence and floor bulge occurred in the joint test stages of the Malazhai tunnel of the Shanghai-Kunming railway and Gaotian tunnel of the Guiyang-Guangzhou railway, implying potential geologic hazards there. In order to find out the cause of this phenomenon and the quality of grouting, landsonar method was used to detect the karst sections of these tunnels. Results show that there are many medium and small karst caves below the tunnel foundation, which are interconnected by several sets of medium to small faults extending below the tunnel foundation. During rainy seasons, intense change of water pressure surrounding the tunnel caused uneven subsidence and floor bulge. To remove such a hidden hazard, the fractured zone and grouting zone were identified according to landsonar data and a treatment plan was determined, which has been verified by its implementation.
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Key words:
- landsonar /
- tunnel foundation /
- karst caves /
- checking grouting quality /
- floor bulge
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[1] 李坚.在建铁路隧道和路基基底岩溶物探技术探讨［J］.铁道工程学报, 2017，34(12):9-12,39. [2] 宋章,王科,蒋良文,等.岩溶区铁路勘察防治技术研究现状及发展趋势［J］.高速铁路技术, 2018, 9(5):38-43. [3] 刘杰,杜翠,程远水.综合物探技术在隧道基底岩溶探测中的应用［J］. 铁道建筑, 2016(1):33-37 [4] 钟世航. 陆地声纳法的原理及其在铁路地质勘测和隧道施工中的应用［J］. 中国铁道科学，2005，16(4):48-55. [5] 钟世航，孙宏志，王荣. 陆地声纳法在隧道施工时预报断层、溶洞的效果［J］. 隧道建设，2007，27(S2):21-25. [6] 钟世航，孙宏志，王荣.陆地声纳法［M］. 北京：中国科学技术出版社，2012. [7] 钟世航，王荣. 陆地声纳法探查中小溶洞、溶管效果好的原因［A］. 中国地球物理2006（中国地球物理学会第二十二届年会论文集）［C］. 成都:四川科学技术大学出版社, 2006:213. [8] 钟世航,王荣.城市闹市区物探技术和岩溶探查的进展及隧道施工时岩爆预报技术的突破 ［J］. 物探与化探,2012,36(3):511-516. [9] 钟世航，孙宏志，王荣，等．陆地声纳法在探查单个溶洞方面的优势［J］．物探与化探，2007，31(supp):111-115. [10] 钟世航,孙宏志，王荣，等隧道及地下工程施工中岩溶裂隙水及断层、溶洞等隐患的探查、预报［J］. 岩石力学与工程学报, 2012, 31(S1):3298-3327. [11] 谢国文,杨平恒,卢丙清,等.基于高分辨率示踪技术的岩溶隧道涌水来源识别及含水介质研究［J］.中国岩溶,2018,37(6):892-899. [12] 李俊杰,朱红雷,赵国军,等.地质雷达电磁干扰分析及在隧洞岩溶探测中的应用［J］.中国岩溶,2018,37(2):286-293. [13] 贾龙,蒙彦,潘宗源,等.钻孔雷达反射成像在岩溶发育场地探测中的应用［J］.中国岩溶,2019,(1):124-129. [14] 郭 芳,姜光辉,王文科,等.岩溶洞穴交互带概念的提出及其在水资源管理中的意义［J］.中国岩溶,2019,38(1):1-9. [15] 罗润林,邓海鹏,李亚南,等.随机岩溶介质的电阻率正演模拟［J］.中国岩溶,2019,38(1):117-123. [16] 陈贻祥,邬健强,黄奇波,等.水中自然电场法探测病态水库岩溶渗漏通道：以金鸡河水库一级水电站为例［J］.中国岩溶,2018,37(6):883-891. [17] 谢国文,杨平恒,卢丙清,等.基于高分辨率示踪技术的岩溶隧道涌水来源识别及含水介质研究［J］.中国岩溶,2018,37(6):892-899. [18] 邬健强,甘伏平,张 伟,等.音频大地电磁法在怀化方石坪村红层找水中的应用研究［J］.中国岩溶,2018,37(6):918-924. [19] 蒋小珍,雷明堂.岩溶塌陷灾害的岩溶地下水气压力监测技术及应用［J］.中国岩溶,2018,37(5):786-791. [20] 赵 军,刘彦斌,王菲菲,等.碳酸盐岩缝洞型储层类型识别与分类预测［J］.中国岩溶,2018,37(4):584-591. -
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