四极测深极距排列改进在桂阳宝山边部找矿中的应用
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摘要
为查明测区目标异常体深部空间产状、埋深,在桂阳宝山边部找矿中,使用激电四极测深。对测深极距排列进行相应改进,在大极距区域构成等深模式,使测得数据在深部具有更高的采集均匀度,测深断面图件的深部细节更加突出,异常数值高低过渡平稳,有效提高对深部地质体的分辨能力。根据目标勘探深度与单位电极距间的关系,直接用断面图对目标异常体的深部空间情况进行了相应的解释,改变了极距排列改进前出现的测量数据杂乱与测深结果的对数解释模式。
To find out the occurrence and the burial depth of the targeted abnormal body in deep space in surveying area,the induced polarization(IP)quadrupole sounding method was used in prospecting from side of Baoshan deposit in Guiyang.In the process of sounding,the corresponding improvement was made to the sounding electrode distance sequence,forming the equivalent-depth-mode in large electrode distance area,which made the data measured&collected with higher unforminty in depth;the transition between higher and lower abnormal values more stable;and the depth details of sounding section profile more prominent;effectively enhancing the resolving power for the deep geological body.According to the relation between the targeted prospecting depth and the unit electrode distance,the section profile was directly used to interpret the status of abnormal body.In deep space,change the disorder of data measured befor electrode distance sequence improvement,and the logarithmic interpretation mode for the sounding resulte.
To find out the occurrence and the burial depth of the targeted abnormal body in deep space in surveying area,the induced polarization(IP)quadrupole sounding method was used in prospecting from side of Baoshan deposit in Guiyang.In the process of sounding,the corresponding improvement was made to the sounding electrode distance sequence,forming the equivalent-depth-mode in large electrode distance area,which made the data measured&collected with higher unforminty in depth;the transition between higher and lower abnormal values more stable;and the depth details of sounding section profile more prominent;effectively enhancing the resolving power for the deep geological body.According to the relation between the targeted prospecting depth and the unit electrode distance,the section profile was directly used to interpret the status of abnormal body.In deep space,change the disorder of data measured befor electrode distance sequence improvement,and the logarithmic interpretation mode for the sounding resulte.
引文
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[6]晏月平,徐军伟,黄朝宇.等深模式电极序列法电测深研究[J].物探与化探,2016,40(6):1173-1177.YAN Y P,XU J W,HUANG Z Y.Deep mode electrode arrangement method for electrical sounding study[J].Geophysical and Geochemical Exploration,2016,40(6):1173-1177.(In Chinese)
[2]葛为中.电测深布极装置及观测方式的改革[C]//中国地球物理学会第二十三届年会论文集,2007:259-260.GE W Z.Reform of the electric sounding device and observation mode[C]//the twenty-third annual meeting of the Chinese Geophysical Society,2007:259-260..(In Chinese)
[3]李忠平.非常规电极排列在大功率激电测深中的应用[J].长春工程学院学报(自然科学版),2009,10(1):84-86.LI Z P.Application of unconventional electrode arrangement in high power IP sounding[J].Journal of Changchun Institute of Technology(Natural Science Edition),2009,10(1):84-86.(In Chinese)
[4]周天福.工程物探[M].北京:中国水利水电出版社,1996.ZHOU T F. Engineering geophysical exploration[M].Beijing:China Water Conservancy and Hydropower Press,1996.(In Chinese)
[5]李金铭.电法勘探方法发展概况[J].物探与化探,1996,20(4):250-258.LI J M.Development of electrical prospecting methods[J].Geophysical Prospecting and Geochemical Exploration,1996,20(4):250-258.(In Chinese)
[6]晏月平,徐军伟,黄朝宇.等深模式电极序列法电测深研究[J].物探与化探,2016,40(6):1173-1177.YAN Y P,XU J W,HUANG Z Y.Deep mode electrode arrangement method for electrical sounding study[J].Geophysical and Geochemical Exploration,2016,40(6):1173-1177.(In Chinese)