皖22井井水触发波及其波的分解

Well water triggered wave and its wave's decomposition

井水触发波是指井孔-含水层系统在外力作用下引起井孔水位振荡的水波,它可分为井水人工触发波和井水自然触发波两种。就短周期而言,井水人工触发波如重锤实验、封井实验和井下水体爆破等引起井水位振荡的水波,井水自然触发波主要是井孔-含水层系统受地震波触发的水震波。文章以皖22井为例,首先介绍方差分析周期分解法是如何从水位观测记录的时序数据中,提取出若干个含有周期特征的序列值。再简单介绍用重锤实验获取井水位振荡的方法。最后通过对微重锤实验数据和同时段地震波触发井区含水层引起井水位振荡波的分析,提出井孔水震波的主振荡频率是来自井孔自身的固有振动频率的观点。

Well water triggered wave refers to the water wave which appear in the well- aquifer system under the action of external force and can cause borehole water level oscillations. It can be divided into two kinds,artificial triggered wave of well water and natural triggered wave of well water. In terms of short cycle,artificial triggered wave of well water includes such as weighted hammer experiment,well sealing experiment and underground water blasting experiment. Natural triggered wave of well water is mainly water level oscillation caused by earthquake wave in the well- aquifer system.This article takes Wan No. 22 Well as an example,firstly introduces how the variance analysis cycle decomposition method is used to extract several sequence values containing characteristic in the time series data from water level observation records. Then simply introduces experimental methods of obtaining water level oscillations with a weighted hammer. Finally,based on the analysis of experimental data as well as well water level oscillations caused by the earthquake wave triggers aquifer in the well area at the same time,the article gives a point of view that the main oscillation frequency of borehole water is raised from the natural vibration frequency.