摘要
为了从含水层本质特征定量评价含水层富水性及其影响指标的相关性,根据研究区含水层沉积和构造特征,并结合地质及水文地质补充勘探资料,确定了影响含水层富水性的指标包括含水层砂地比、含水层厚度、粗砂岩厚度、粗砂岩层数、断层分维值和褶皱分维值,采用灰色关联度对6项影响指标与含水层富水性的相关性进行了研究。通过计算分析,对含水层富水性影响由大到小依次为断层分维值、含水层厚度、含水层砂地比、砂岩层数、粗砂岩厚度和褶皱分维值。说明了含水层富水性受到构造的影响较大,但是沉积特征同样对含水层富水性起到了重要的影响作用。在对含水层富水性进行分析的过程中,考虑到构造控水的同时,含水层沉积控水作用同样应该受到重视。
In order to evaluate the correlation between water abundance of aquifer and its influential indexes quantitatively based on essential characteristic, according to the sedimentary and tectonic characteristics of aquifer in the research area, combining with geological and hydrogeological supplementary data, the influential indexes including aquifer ratio of sand and stratum, aquifer thickness, coarse sandstone thickness, quantity of coarse sandstone layer, fault fractal dimension and fold fractal dimension are determined to evaluate aquifer water abundance. Grey relational analysis is used to research the correlation between six influential indexes and water abundance of aquifer. Through the calculation and analysis, the influence degree to water abundance of aquifer from strong to weak is as follows： fault fractal dimension, aquifer thickness, aquifer ratio of sand and stratum, quantity of coarse sandstone layer, coarse sandstone thickness, fold fractal dimension. The result illustrated that water abundance of aquifer is largely influenced by tectonic, and the sedimentary characteristic is also play an important role. Tectonic factor should be considered when water abundance of aquifer is analyzed, and the sedimentary factor also should be taking into account seriously.
出处
《工程勘察》
2015年第9期51-54,80,共5页
Geotechnical Investigation & Surveying
基金
国家科技支撑计划课题(2012BAC10B03)
中煤科工集团西安研究院面上项目(2014MS010)
中煤科工集团青年基金(2014QN004)
关键词
沉积特征
构造特征
含水层富水性
灰色关联分析
沉积控水
sedimentary characteristic
tectonic characteristic
water abundance of aquifer
grey relational analysis
groundwater controlled by sedimentary
