龚家方Ⅳ号斜坡监测及变形机理分析

Monitoring and Deformation Mechanism of Gongjiafang Ⅳ Slope

采用无线位移计对龚家方Ⅳ号不稳定斜坡进行自动化远程监测,通过对监测数据的分析,掌握该斜坡的变形状况。结果表明:斜坡呈整体运动,但斜坡自上而下的运动特征不同。斜坡上部总体变形趋势表现为拉伸,中部为先拉伸后压缩,下部为先压缩后拉伸,底部为拉伸。降水频繁时期,斜坡位移呈加速增大趋势。岩体破碎、节理裂隙较发育区域,位移量和降水量基本同步;岩体较完整区域,位移突变将滞后于降水,滞后期一般为20～45 d。

Using the wireless displacement meter in Gongjiafang Ⅳ unstable slope for automation remote monitoring,it mastered the slope deformation condition through the analysis of the monitoring data.The results show that the slope is moving in general,but the slope top-down motion characteristics are different.The deformation that in the upper part of slope trends for stretching,first tension then compression in the middle,first compression and later stretching in the lower and tensile in the bottom.Slope displacement trends to increase during precipitation frequent period,displacement and precipitation basically synchronize in the area with rock crushing and rich joint crack;displacement mutation will lag behind the precipitation in 20-45 days in rock complete area.