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针对厂坝铅锌露天矿高陡边坡的特点,确定了以“GPS监测手段为主,以水准仪、裂缝仪等监测手段为辅”的监测方案,详细介绍了该方案的设计与布设.以北帮边坡1500 m台阶的监测数据为例进行了变形规律分析,并评价了北帮边坡的综合监测结果.结果表明:在监测点B03～B06的北帮边坡稳定性最差,近600 d的最大位移量为231.1 mm,存在着滑移岩体;1500 m边坡岩体的变形速率曲线显现出明显的S形,凸起段表现为由雨季降水引起的加速变形期;裂缝的累积变形阶段呈现出初期的相对稳定期、中期的变形触发期和第3阶段的稳定变形持续期;北帮中部台阶1500 m边坡的变形较其他台阶边坡显著,稳定性最差.因此,该监测系统的应用效果较好,是高陡边坡变形监测的重要方法之一.
Aiming at the characteristics of high and steep slope in Changba lead-zinc open pit mine, the monitoring scheme with “GPS monitoring method as the main method, supplemented by the leveling instrument, crack gauge and other monitoring methods” was determined, and the design and layout of this scheme were introduced in detail Taking the monitoring data of the 1500 m step in the north slope as an example, the deformation regularity was analyzed and the comprehensive monitoring result of the north slope was evaluated. The results show that the stability of the north slope at monitoring point B03 ~ B06 is the worst , And the maximum displacement in the past 600 d is 231.1 mm. There is a slip rock mass. The deformation rate curve of 1500 m slope rock mass shows obvious S-shape, and the convex segment shows the accelerated deformation period caused by precipitation in rainy season. The cumulative deformation phase of the fracture shows the initial relative stable period, the medium-term deformation trigger period and the stable deformation period of the third stage. The deformation of the 1500 m slope in the middle section of the north central bank is more remarkable than the other side slopes and the stability is the worst. Therefore, the monitoring system has good application effect and is one of the important methods for monitoring the deformation of steep slopes.