山区输变电工程崩塌(滚石)灾害识别与预测方法

THE APPROACH OF ROCK COLLAPSE (ROCKFALL) IDENTIFICATION AND PREDICTION FOR POWER TRANSMISSION AND TRANSFORMATION PROJECT IN MOUNTAIN AREA

随着国家"一带一路"和"全球能源互联网"战略的构建和实施,山区复杂地质环境条件下的输变电工程建设越来越多。然而,现阶段对于输变电工程崩塌(滚石)灾害识别、预测和评价方法等方面的研究相对较少,难以有效解决山区崩塌(滚石)灾害频发与输变电工程安全建设、运营之间不断增长的矛盾。鉴于此,作者借助航空遥感、无人机航测、岩体结构分析工具、崩塌(滚石)运动数值模拟软件等新技术方法等,对山区输变电工程中崩塌(滚石)灾害识别与预测方法等开展了相关研究。提出:(1)基于区域工程地质分区-区段遥感分析-山体无人机航拍-岩体结构特征分析的思路,实现对长距离、大区域山区输变电工程的崩塌(滚石)危岩体快速识别和分析;(2)利用三维崩塌(运动)模拟方法快速识别崩塌(滚石)在杆塔(变电站)范围的到达情况,然后再利用多种方法对比确定能到达杆塔(变电站)范围内崩塌(滚石)的冲击特征;(3)山区输变电工程崩塌(滚石)灾害风险计算方法。

With the strategies of ＂One Belt One Road＂and ＂Global Energy Interconnection ＂structuring and implementing,more and more power transmission and transformation projects are built on the complicated geological conditions in mountainous areas. However, current studies on the identification, prediction and evaluation approaches of rock collapse（ rockfall） for power transmission and transformation projects are few. Therefore,it is difficult to effectively solve the increased translations between frequent occurrence of rock collapse（ rockfall） and safety of construction and operation of power transmission and transformation projects in mountainous areas. For this reason,we studied the approach of rock collapse（ rockfall） identification and prediction for power transmission andtransformation project in mountain area,using remote sensing,UAV aerial photogrammetry,rock mass structure analysis tool and rockfall simulation method. Following conclusions were obtained：（ 1） Based on the thinking and approach of engineering geological zoning on large area-remote sensing analysis on medium area-UAV aerial photogrammetry on mountain area-analysis of rock structure characteristics,dangerous rock mass that will lead to rock collapse（ rockfall） in long and large region of power transmission and transformation project could be identified quickly and analyzed.（ 2） Three-dimensional numerical simulation method could be used to quickly identify the characteristics of rockfall＇s arriving to the tower（ electric substation） or not,and the kinematic characteristics of rockfall that will arrive to the tower（ electric substation） could be analyzed carefully by integrating different approaches.（ 3） Approach of rockfall risk analysis for power transmission and transformation project.