新疆S315线蜂场-尼勒克段沿线道路病害特征及成因 Analysis of Disaster Characteristics and Cause along Fengchang-Nilka Section of S315 Highway in Xinjiang

新疆S315线蜂场至尼勒克段地处新疆尼勒克县境内，沿线新构造运动活跃，断裂构造发育，地震活动频繁，导致滑坡、崩坍、积雪、冻土等灾害频频发生，严重威胁和破坏交通。本文在实地调查的基础上，分析了研究区病害发育现状、分布规律、成因。研究发现，沿线病害可归纳为不良地质和特殊岩土问题，主要分布在k88+967-k130+100段处，其中发育滑坡1处，碎落、坍塌23处，雪害7处，冻土21处，湿陷性黄土20处。特殊地层结构和复杂的地形地貌为各类病害的孕育提供了基础条件，而频发的地震和独特气象条件耦合加速各类病害的形成和发展。研究成果可为区域公路工程建设和防灾提供基础信息和技术指导。 The Fengchang-Nilka of S315 is located in Nilka County in Xinjiang. Strong earthquake area, land-slide, collapse, snow, permafrost, etc, develop expansively along the line and cause tremendous disasters to highway construction, because of the active new tectonic movement, fault tectonic development, frequent seismic activity. Based on the field investigations, this paper analyzes the present situation, distribution and causes of disease development in the study area. Research re-sults are as follows: along the diseases can be summarized as bad geological and special geotech-nical problems, mainly distributed in the k88+967-k130+100 section, of which there are one landslide, 23 in collapse, 7 in snow damage, 21 in frozen and 20 in collapsible loess. Special strata structures and complex landform provide the basic conditions for all kinds of diseases, and the coupling of frequent earthquakes and unique climates accelerate the formation and development of all diseases. The research results can provide basic information and technical guidance for the regional road engineering construction and disaster prevention.