摘要
中国渤海海峡、台湾海峡和琼州海峡都需要通过跨海通道予以连接,琼州海峡跨海通道工程规模、难度小于渤海海峡和台湾海峡,优先建设琼州海峡跨海通道工程更具合理性。真空管道断面小、结构轻、集成度好,适合在海底敷设或高架,建设成本较低,对环境影响小,安全性、稳定性、可靠性较高。基于对地形地貌的分析,得出4条线路备选方案:1)徐闻角尾乡—澄迈桥头镇(西线/W线),海面距离26.5 km,最大水深47 m,海底地形较平缓;2)海安南山村—海口新海(中线M1a线),海面距离19 km,最大水深84 m;3)海安青安村—海口海甸(中线M2b线),海面距离20 km,最大水深80 m;4)龙塘下塘村—海口铺前镇(东线E线),海面距离30 km,最大水深47 m,海底地形较平缓。对中线M1b线和M2a线作为比较线进行分析,推荐南山村—新海M1a线为优先方案,初步分析各线路经由路径海水深度、纵断面、纵坡及海底管道线形。估测各线路端点大地坐标,经纬度极坐标值取0.50″能够满足线路方案分析和初步可行性论证的端点定位精度要求。当管道直径较大(≈5 m)、管道内车辆运行速度较低时,可不抽真空,则为普通海底管道,也是琼州海峡跨海通道可供选择的方案之一。
Vacuum tube transportation has a small cross-section,light structure,and good integration,it should be laid on seabed or elevated,and has advantages such as low construction cost,minimal environmental impact,safe,stable,and reliable.Based on the analysis of terrain and landforms,four alternative route schemes are proposed as follows:(1)Xuwen Jiaowei(N20°13′39″,E109°55′39″)-Chengmai Qiaotou(N19°59′19″,E109°56′15″)(West line),with a sea surface distance of 26.5 km and a maximum depth of 47 m,and a relatively gentle seabed terrain.(2)Hai′an Nanshan(N20°13′48″,E110°07′33″)-Haikou Xinhai(N20°03′42″,E110°09′40″)(M1a line),with a sea surface distance of 19 km and a maximum depth of 84 m.(3)Hai′an Qing′an(N20°14′41″,E110°16′56″)-Haikou Haidian(N20°05′05″,E110°20′44″)(M2b line),with a sea surface distance of 20 km and a maximum depth of 80 m.(4)Longtang Xiatang(N20°19′47″,E110°26′15″)-Haikou Puqian(N20°06′34″,E110°35′46″)(East line),with a sea surface distance of 30 km and a maximum depth of 47 m,the seabed terrain is relatively gentle.A comparative analysis is conducted on the M1b and M2a lines,and the M1a line is recommended as the priority.Preliminary analysis is conducted on the seawater depth,longitudinal section,longitudinal slope,and submarine tube alignment of each route.The geodetic coordinates of the endpoints of each line are estimated,and the polar coordinates of longitude and latitude of 0.50″is capable of meeting the endpoint positioning accuracy requirements for line scheme analysis and preliminary feasibility study.When the diameter of tube is relatively large(≈5 m)and the speed of vehicles inside the tube is low,vacuum pumping is not necessary,it can be serviced as a common submarine tube,which is also one of the options for Qiongzhou strait seacrossing channel.
作者
张耀平
ZHANG Yaoping(College of Engineering and Technology,Yang-En University,Quanzhou 362014,Fujian,China)
出处
《隧道建设（中英文）》
CSCD
北大核心
2024年第S01期16-24,共9页
Tunnel Construction
基金
泉州市社会科学规划项目(2023H48)。
关键词
琼州海峡
跨海通道
海底真空管道
线路方案
Qiongzhou strait
sea-crossing channel
seabed vacuum tube transport
route scheme
