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平泉至铁门关公路位于平泉县和宽城县境内,是内蒙-承德-秦皇岛省级出海通道,并为省重点项目。平铁线起点为铁门关,途经炮岭、桲罗台、孟子岭、宽城镇、龙须门至平泉,路线全长93.4公里,全线按二级公路技术标准建设,所经区域主要为侵蚀堆积山间河谷和侵蚀剥蚀低山丘陵地貌。平铁公路所在区域分布着广泛的风化岩和少量低液限粘土的土石混合料,这些土石混合料干燥状态下强度较高,在浸水
Pingquan to Tiemenguan Road is located in Pingquan County and Kuancheng County, Inner Mongolia - Chengde - Qinhuangdao provincial sea access, and the provincial key project. The starting point of the Pingtien Railway is Tiemen Pass, passing through the Gunling, Miluo, Menziling, Kuancheng, Longsuimen-Hiraizumi and the route is 93.4 kilometers in length. The entire line is constructed according to the technical standards for secondary roads. Heaping mountain valleys and eroded and degraded hilly landforms. Flat iron highway is located in the area where a wide range of weathered rock and a small amount of low-liquid-limit clay soil and rock mix, the higher strength of these earth-rock mix dry state,