北京平原区高丽营地裂缝带活动性及灾害特征研究

摘要

This paper outlines the distribution of a ground ifssure in Beijing. Based on research into the Gaoliying ground fissure and analysis of continuous monitoring data, this paper discusses the origins, periodicity, and the 3D activity characteristics of the Gaoliying ground fissure, and investigates the correlation between this ground fissure and land subsidence. This ifssure is control ed by the Huangzhuang-Gaoliying fracture, and fol ows its pattern of activity, with vertical deformation more important than horizontal deformation. The activity of this ground ifssure fol ows an annual periodicity, and deformation between April and June accounts for 60%to 70%of al activity each year. The width of biggest inlfuence area in the heading side is 17.4 m, and 49.5 m in the hanging side. The analysis shows that the Gaoliying ground ifssure is with the engineering disaster characteristics, including the similarity of engineering disaster, the limitations of disaster's width and the progressivity of geological disaster, and establishes the foundation of prevention and control on ground ifssure.%通过对北京地区地裂缝规模最大、致灾最为严重、具有典型特征的高丽营地裂缝带调查监测数据的分析，探讨了高丽营地裂缝带的活动特征，分析了该地裂缝带与地面沉降的相关性。该地裂缝受控于黄庄-高丽营断裂，具有断裂活动的继承性，具有以垂直变形为主、横向变形为辅的三维活动特征，地裂缝活动具有年际的周期性和年内变化的跳跃性，每年4~6月变形量占全年的60%~70%。高丽营地裂缝带上下盘的最大影响带宽度分别为49.5m和17.4m。研究结果为地裂缝地质灾害的防治奠定了基础。