基于激电法半衰时探水的可行性研究  

Feasibility study of water exploration based on IP method in half decline

作　　者：王程 WANG Cheng(Xi'an Research Institute Co.Ltd.,China Coal Technology and Engineering Group Corp.,Xi'an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,西安710077

出　　处：《物探化探计算技术》2023年第5期597-603,共7页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：陕西省自然科学青年基金(2020JQ-995);天地科技股份有限公司科技创新创业资金项目(2020-TD-QN11)。

摘　　要：突水灾害在隧(巷)道等隐蔽工程中是重大安全隐患,查明隐伏的强富水区域是亟需研究和解决的重要工程需求,其中水量的预测是重难点。针对此问题,这里开展激电法半衰时探水技术的研究,基于岩石电化学测试分析不同孔隙度含水量条件下相关参数的规律,采用物理模拟实验研究二次时差与含水量之间关系。研究表明:(1)电阻率与孔隙度含水量之间为正线性相关,极化率和半衰时与孔隙度含水量之间近似“正态”相关;(2)二次时差法探水机理中二次时差与含水量关系较为复杂,并非简单的线性相关,二次时差法需基于较多已知条件方可粗略估算含水量,目前该方法实际应用仅可作为探水的辅助手段。The water inrush disaster is a significant hidden danger in the tunnel(lane) and other hidden projects.It is a crucial engineering demand to find the hidden areas with strong and prosperous water,and the prediction of water quantity is a crucial difficulty.In order to solve this problem,this paper carried out research on the water exploration technology of IP method in half decline.The law of related parameters under different porosity water content was analyzed based on the electrochemical test of rock.A physical simulation experiment studied the relationship between secondary time difference and water content.The results show a positive linear correlation between resistivity and porosity water content and an approximate "normal" correlation between polarization and half decline and porosity water content.The relationship between the quadratic time difference method and water content in the mechanism of water exploration is complicated,rather than a simple linear correlation.The quadratic time difference method can estimate water content roughly only based on more known conditions.The practical application of this method can only be used as an auxiliary means of water exploration.

关 键 词：激电半衰时 水量估算 含水构造 半衰时 二次时差 

分 类 号：P631.3[天文地球—地质矿产勘探]