综合物探在罗布泊地下水勘查中的应用
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摘要
地面核磁共振测深技术是目前唯一直接找水的物探新技术 ,而高分辨率浅层地震技术可为地下水勘查提供构造、地层划分、地层富水性和岩性对比等方面的资料。因而 ,上述两种方法在地下水勘查工作中起着重要作用。本文在简要介绍核磁共振技术和高分辨率浅层地震技术的基本原理和技术特点的基础上 ,以新疆罗布泊葫芦坝地下水勘查为例 ,对该两种方法的勘查成果进行了分析。地震勘探工作查明了工作区的地层情况和断裂带分布 ,同时为核磁共振测深圈定了工作靶区 ;核磁共振测深结果显示了测深点位置地层含水情况随深度的变化。经钻孔验证 ,勘测成果与实际地质情况基本吻合
Proton Magnetic Resonance technique is a direct method for detecting groundwater, and high-resolution shallow seismic which can provide some information about tectonic, geologic layer and water abundance. So, the two methods play an important role in the groundwater exploration. This paper introduces the principle and technical characteristic of nuclear magnetic resonance and high-resolution shallow seismic techniques in brief. It gives an example for exploring groundwater in Luobupo, analyzes the application effect of the two methods. Seismic prospect detects the information of stratum and the distribution of fracture, at the same time, defines the station of nuclear magnetic resonance. The result of nuclear magnetic resonance shows the change of water content along with the depth. The drilling results show that the geophysical result and the geological condition are coincident.
Proton Magnetic Resonance technique is a direct method for detecting groundwater, and high-resolution shallow seismic which can provide some information about tectonic, geologic layer and water abundance. So, the two methods play an important role in the groundwater exploration. This paper introduces the principle and technical characteristic of nuclear magnetic resonance and high-resolution shallow seismic techniques in brief. It gives an example for exploring groundwater in Luobupo, analyzes the application effect of the two methods. Seismic prospect detects the information of stratum and the distribution of fracture, at the same time, defines the station of nuclear magnetic resonance. The result of nuclear magnetic resonance shows the change of water content along with the depth. The drilling results show that the geophysical result and the geological condition are coincident.
引文
[1]潘玉玲,JeanBernard.地面核磁共振找水仪及其在水文地质调查工作中的应用研究.CT理论与应用研究,2000,9(增刊):37～43.
[2]杨桂新,朱庆俊.地面核磁共振技术在西北地区浅层地下水勘查中的应用.见:中国地质调查局.严重缺水地区地下水勘查论文集.北京:地质出版社,2003.134～138.
[3]余秋生,武毅,尹秉喜,等.地球物理勘查地下水的新进展.地球学报,2002,23(增刊):79～83.
[4]严良俊,陈清礼,胡文宝,等.灰岩溶洞发育区浅层瞬变电磁法找水效果.工程地球物理学报,2004(1)
[2]杨桂新,朱庆俊.地面核磁共振技术在西北地区浅层地下水勘查中的应用.见:中国地质调查局.严重缺水地区地下水勘查论文集.北京:地质出版社,2003.134～138.
[3]余秋生,武毅,尹秉喜,等.地球物理勘查地下水的新进展.地球学报,2002,23(增刊):79～83.
[4]严良俊,陈清礼,胡文宝,等.灰岩溶洞发育区浅层瞬变电磁法找水效果.工程地球物理学报,2004(1)
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