茅山断裂带周边地区流体井水位观测特征及机理分析  

OBSERVATION CHARACTERISTICS AND MECHANISM ANALYSIS ON UNDERGROUND WATER AROUND MAOSHAN FAULT ZONE

作　　者：胡米东 毛华锋[1] 陈启林[1] 王皓[1] 张杰[1] 霍雨佳[1] 黄群[1] HU Midong;MAO Huafeng;CHENG Qilin;WANG Hao;ZHANG Jie;HUO Yujia;HUANG Qun(Jiangsu Liyang Seismic Station,Liyang213332,China)

机构地区：[1]江苏省溧阳地震台,江苏溧阳213332

出　　处：《高原地震》2022年第4期21-28,共8页Plateau Earthquake Research

摘　　要：收集整理茅山断裂带周边6口流体井水位数据、流体井参数资料、茅山断裂带基本资料和茅山断裂带周边地区中强震历史资料,计算分析各井水位同震响应、降雨荷载效应、气压系数等观测特征指标,并对各井水位观测特征开展机理分析。茅山断裂带周边6口流体井在同震响应、降雨荷载效应和气压系数三个方面有较大差异,分析认为对于不同观测井,震级与震中距不是影响同震响应灵敏度的主要因素,井孔所在位置的构造环境、水文地质条件和成井工艺水平均对同震响应灵敏度有影响;井孔周边的降雨量、降雨强度、井孔周边的地形、观测含水层顶板埋深对观测井降雨荷载效应有影响;观测含水层岩性和顶板埋深对观测井气压系数有影响。In this paper,the water level data onto 6 wells around the Maoshan fault zone,parameters of each fluid well,Maoshan fault zone and other basic data are collected and sorted out.The water level co-seismic response,rainfall load effect,pressure coefficient and other indicators of each observation well is calculated and analyzed,and the observation characteristics and mechanism of each observation well are analyzed and studied.The calculation shows that the co-seismic response,rainfall load effect and pressure coefficient of six fluid wells are quite different.The analysis shows that for different observation wells,the magnitude and epicentral distance are not the main factors affecting the co-seismic response sensitivity.The structural environment,hydrogeological conditions and well completion technology level at the location of the well bore all affect the co-seismic response sensitivity.The rainfall load effect of observation well is affected by the rainfall around the well hole,rainfall intensity,terrain around the well hole,and the buried depth of observation aquifer roof.The lithology of the observed aquifer and the buried depth of the roof had an impact on the pressure coefficient of the observation well.

关 键 词：茅山断裂带 流体井 水位观测特征 机理分析 

分 类 号：P315.723[天文地球—地震学]