Core Points - The Nanshan Ring Road Phase III officially opened for trial operation, completing a crucial link in the transportation network of the Yanqing District, enhancing access to popular tourist destinations [1] - The project was completed two months ahead of schedule, taking nearly three years to construct, and spans approximately 19.8 kilometers [1] - The road is designed as a two-lane secondary highway, benefiting three townships in Yanqing District and significantly improving regional connectivity [1] Construction Challenges - The construction team faced multiple technical challenges, including the West Huailing Tunnel, which is 762 meters long and features a dual carriageway design with separate lanes for non-motorized and motorized vehicles [2] - The East Hongshan Tunnel, measuring 968 meters, encountered poor geological conditions, leading to the innovative use of a 3D imaging geological forecasting system for safe construction [2] - The project included a key overpass for the Daqin Railway, utilizing advanced construction techniques to ensure precision and safety during the build [2] Integration of Technology and Ecology - The Nanshan Ring Road Phase III integrates technology, culture, tourism, and ecology, featuring smart inspection robots in the tunnels for enhanced safety [3] - The road was constructed according to the standards of a cycling route, with various enhancements for tourism, including colorful road markings and cycling sculptures [3] - The project adopted a "zero waste" philosophy, repurposing excavated materials for roadbed fill and planting over 3,000 native plants at tunnel entrances to promote ecological sustainability [3]

新京报讯 据"北京延庆"微信公众号消息，10月31日上午8点，南山环线三期道路开通试运行。项目于 2023年3月开工建设，提前2个月完工通车。项目起点为南山环线一期工程终点，终点为昌赤路新线，惠 及大榆树、井庄、永宁三个乡镇，道路等级为二级公路，双向两车道，路线全长19.8公里，设置桥梁19 座，隧道2座。南山环线三期建成后进一步完善了延庆南部地区路网结构，促进了延庆区全域旅游发 展，增强了山区应急保障能力，为延庆区经济社会发展注入新活力。 南山环线三期作为延庆区"三横五纵"公路网骨架的重要组成部分，也是延庆区百里骑行专线的重要组成 路线。项目最早于2011年提出设想，经历了12年前期谋划、项目立项等准备工作，2023年3月正式开工 建设，在近3年的建设之后，终于形成了这条串联延庆东西的重要通道，完成了延庆平原地区大环线的 最后一块拼图。 路线串联起了八达岭长城、柳沟民俗村、永宁古城等热门旅游目的地。线路将与康张路、古龙路、香龙 路和昌赤路等构成延庆浅山区的一条环线公路，与G6高速公路、G7高速公路、京礼高速和G234国道等 共同形成延庆区的公路骨架网，有效增强区域路网通达性，助力地区经济发展。 南山环线三期 ...