Research And Application Of Shallow Drilling Geochemical Exploration Technology In Forest Swamp Area

Because of the existence of overburden,conventional geochemical exploration method is difficult to play an ideal role in forest swamp area.In order to solve the problem of forest swamp prospecting coverage area,Yang Shaoping tried to improved original geochemical methods especially geochemical anomaly tracking method,but the method witch based on the previous can not sovle the previous problem.Wang Xueqiu tried to use the deep penetrating geochemical prospecting method to solve the problem,but the changeable natural conditions make it impossble for the overburden layer to preserve the weak information,so,deep penetrating geochemical in swamp forest covered areas only have some limited results.Looking at the geochemical history of the forest and marsh covered area over the past 40 years,there is still a great distance from the geochemical exploration technique to the comprehensive prospecting breakthrough in this area.This paper analyzes the structure of the cover layer,and the distribution model of ore bearing information in overburden is studied,conclud that the eluvial slope gravel and bedrock is the best medium of geochemical exploration sampling.In the Duobaoshan mining areas,shallow geological exploration was test.From the chemical symbol of element anomaly map can show the regional element distribution clearly,and the distribution of the soil and eluvial slope and rock layers,and a Au metallogenic belt and a Cu ore district was located.To use the method,A clear element distribution map is obtained from the Qingsongshan area,and the distribution of elements in the area can be seen from the diagram.In the area of Changshengerdui,the shallow drilling geochemical map and soil anomalies were compared,we can see they're similar,but the shallow drilling geochemical map is more clear and accurate.In the area of Erlongshan,Phase IP anomalies are examined by shallow drill geochemical profiles,the results show that the abnormal is induced by ore,metallogenic element is Au,and the location of the metallogenic is located in the edge of high value area of the phase IP anomaly.By combining shallow drilling with field rapid analysis technology,a "shallow drilling geochemical exploration" rapid exploration technique is developed.This technique can detect and track anomalies very quickly,and can greatly improve exploration efficiency.The cross section of shallow drilling geochemical exploration can check geochemical anomalies and geophysical anomalies at the same time,which can effectively improve the efficiency and accuracy of anomaly detection.In a word,shallow drilling and geochemical exploration technology has completely solved the restriction of geochemical exploration technology in the overburden layer,and has made a breakthrough in the field of Prospecting technology in forest and marsh covering area.