道路边坡灾害整治新技术及应用New technology and application of ....pdfVIP

道路边坡灾害整治新技术及应用 张玉芳，魏少伟，李健，关岩鹏 （中国铁道科学研究院铁道建筑研究所，北京 100081） 摘要：目前，我国道路滑坡灾害的整治技术以支挡、锚固为主。传统锚固工程中存在安全耐 久性隐患大以及快速高效技术缺乏两大难题。针对这两大技术瓶颈，提出了快速耐久公路边 坡灾害防治新技术。其中，“预制锚头”、“双锚固段”、“复合型”3 种锚索新结构，突破了 预应力损失与突发破坏等长期困扰工程应用的技术瓶颈，攻克了锚索安全耐久性难题； 2 种钢花管控制注浆支挡加固新技术，解决了“注浆+微型桩”、“注浆+锚固”的设计及施工应 用技术难题，克服了传统支挡加固工程工期长、见效慢、施工安全隐患大的不足，为边坡灾 害应急抢险快速整治提供了新手段。 关键词：道路边坡灾害，新型锚索结构，钢花管控制注浆技术 中图分类号： New technology and application of road slope disaster prevention 1 1 1 1 Zhang Yu-fang , Wei Shao- Wei , Li Jian , Guan Yan-Peng , (1．Railway Engineering Research Institute ，China Academy of Railway Sciences ，China ；Beijing, 100081） Abstract: At present, the disposal measure of road landslide disaster in our country is mainly reinforcing and anchoring. There are two major problems in the traditional reinforcing and anchoring project: “the hidden trouble about the safety and durability” and “the lack of the rapid and efficient retaining technology”. Aiming at these two problems, a new technology for controlling the road slope disaster is put forward. Among them, the new structure of three kinds of anchor cables,“precast anchor head, double anchor section and the compound”, broke through the technical bottleneck that has long been troubling engineering application such as the loss of prestressing force and the sudden failure of the anchorage engineering. It overcomes the problems about the safety and durability of the anchor cable. The two kinds of grouting reinforcement technology by steel floral tube solve the design and application of technical problems about the grouting + micro-pile and grouting + anchoring. It overcomes the problems