公路路基下伏人工洞穴的成因、危害与处治技术

陇西地区公路沿线人工洞穴及采空区等下伏不良地质体分布广泛，严重影响公路的施工，运营安全和工程建设的规范及投资效益，下伏洞穴及采空区具有隐伏性强，空间分布规律性差，冒落塌陷无法预测等特点，洞穴采空区处治的措施应根据其与公路的空间位置关系，规模大小、稳定状态、填充情况，周围环境等因素，经综合技术经济经比较后综合确定，并积极探索应用新技术，新方法和新工艺。

Forming, Endangerment and Treatment of Artifical Holes Below Road Subgrade

The poor geological condition such as a artifical hole and mined regions are distributed widely below the highways of Longxi loess area. Their distributins are no rule and not easy to find out. It is difficult to estimate their displacement and fall. So the treatments have to be done on the basis of understanding the space relations with the road to be built, the dimensions, stabilization state, filling and the situation around.