二维地震技术在三门峡盆地东交口地区盐矿勘查中的研究与应用  

Research and application of two-dimensional seismic technology in salt mine exploration in Dongjiaokou Area,Sanmenxia Basin

作　　者：蔡兰花[1] Cai Lanhua(Henan Province Aviation Geophysical Exploration and Remote Sensing Center,Zhengzhou 450000,China)

机构地区：[1]河南省航空物探遥感中心,河南郑州450000

出　　处：《能源与环保》2022年第8期115-122,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：河南省省级地质勘查基金项目(豫国土资发〔2017〕22号)。

摘　　要：豫西三门峡古近系盆地分布范围广、沉积厚度大,以往地质调查发现该区始新统地层中具有寻找盐矿的前景。盐矿多保存于形态完整、断裂不发育的盆地中,膏盐层具有强烈的地震波反射特征。为进一步评价三门峡盆地东部交口地区的含盐性,采用二维地震勘探技术查明盆地形态、地层层序,圈定含盐目标层等。结果表明,研究区内褶曲较多、断层发育,地层连续性差,没有规模较大、形态较完整的盆地存在。推断豫西三门峡盆地东部交口地区难以发现厚大盐矿体,但可能存在有较薄盐层,经钻探验证,仅发现石膏颗粒存在。表明交口地区找盐不容乐观,三门峡盆地找盐突破需要进一步开展勘查、研究工作。The Sanmenxia Paleogene Basin in western Henan has a wide distribution range and a large sedimentary thickness.Previous geological surveys have found that the Eocene strata in this area have the prospect of searching for salt deposits.Most of the salt deposits are preserved in the basins with complete morphology and undeveloped faults,and the gypsum-salt layer has the characteristics of strong seismic wave reflection.In order to further evaluate the salinity of the junction area in the east of the Sanmenxia Basin,two-dimensional seismic exploration technology was used to identify the basin morphology,stratigraphic sequence,and delineate the salt-bearing target layers.The results showed that there were many folds,developed faults,and poor stratigraphic continuity in the study area,and no large-scale and complete basins exist.It was inferred that it was difficult to find thick and large salt ore bodies in the eastern Jiaokou Area of the Sanmenxia Basin in Western Henan,but there may be thinner salt layers.After drilling verification,only gypsum particles were found.It showed that it was not optimistic to find salt in the Jiaokou Area,and further exploration and research work were needed to make breakthroughs in salt prospecting in the Sanmenxia Basin.

关 键 词：三门峡盆地 盐矿 二维地震 豫西交口 

分 类 号：P631[天文地球—地质矿产勘探]