克孜尔水库跨断层形变变化速率的非均匀性特征分析

对克孜尔水库跨断层垂直形变近40年的资料和水平形变近32年的资料进行了分析。研究发现,①跨断层形变的变化速率具有明显的不均匀性,根据数据序列走势,变化速率的不同可分为6个阶段;②水库施工对跨断层形变有一定的影响,水库蓄水对跨断层形变有显著的影响;③水库蓄水达到正常库容量后的新平衡状态下,跨断层形变速率变化几乎是无干扰背景下变化速率的2倍;④区域应力场的增强对跨断层形变趋势性转折有显著性影响。

ANALYSIS ON HETEROPICAL CHARACTERISTICS OF CROSS-FAULT VERTICAL DEFORMATION VARIATION SPEED IN KEZIR RESERVOIRS DAM

The authors analyzed cross-fault vertical deformation data for 40 years and horizontal deformation data for 32 years in Kezir reservoirs.The result showed that ① there was obvious heterogeneity of cross-fault deformation variation speed and there was 6 period according to the data sequence trend and different variation speed;② the reservoir construction influenced the cross-fault deformation definitely and the reservoirfilling affected the cross-fault deformation prominently;③ under the new equilibrium state after the reservoirfilling reached normal capacity,the cross-fault deformation variation speed was nearly twice bigger than that under no interference background;④ the increasing of regional stress field affected a trend of turning point significantly.