Research On The Application Of High-precision Gravity In The Prospecting Of Xiaozhuqing Survey Area In Huize Lead-zinc Mining Area

Xiao zhu qing surveyed area is located in the periphery of lead-zinc mine area in hui ze county of Yunnan province,extension part in the southwest of Ying chang po lead-zinc mine in weining county of Guizhou province,with the prospect of a lead-zinc mine and find potential.Huize lead-zinc mine is one of the main producers of lead and zinc germanium in our country,is a mining for many years the old mines,the current ownership has not much,how to more effectively in the deep and periphery mineralization area is very important to find concealed pb-zn Ore body.In huize lead-zinc mine geophysical exploration work are mainly high frequency magnetotelluric method(EH4),IP,etc.but these geophysical techniques are under the influence of lectromagnetic all the time,thefore the effect in searching of lead-zinc mine is not good.However,High precision gravity method is not affected by electromagnetic interference,but high precision gravity for lead-zinc deposit^it is not clear,so it is necessary for effectiveness and applied research methods.This paper,relying on the China geological survey research project "ore concentration area in northeast yunnan prospecting prediction",selects a topic,in Xiao zhu qing surveyed area has carried out high precision gravity measurement,the purpose is optimizing ore-prospecting target area,provide geophysical basis for geological engineering design.In the paper,the main research work is as follows:(1)Collected information,summarized the high accuracy gravity prospecting principle;(2)Through a known orebody characteristics and density characteristics of Huize lead-zinc mine,the effectiveness of the research on high precision gravity survey for lead-zinc mine;(3)The collection of data,summarizes the Huize lead-zinc mine area regional geological features and the Huize lead-zinc deposit small bamboo of wellknown test area geological characteristics;(4)Acquisition Huize lead-zinc mine area density and small bamboo of wellknown test specimens,eombined with the collected data,summarizes the density characteristic;(5)Selected Xiao zhu qing surveyed area of Huize lead-zinc mining area measurement by high precision gravity survey,researching the effectiveness of the high precision gravity survey application;(6)For the high precision gravity data correction and data processing research;(7)To abnormal of Xiao zhu qing surveyed area in Huize lead-zinc mining area and high precision measurement has carried on the qualitative and quantitative inference and interpretation of the gravity anomaly and optimizing the prospecting target area.Through the above research,obtain the following main knowledge:(1)the Huize lead-zinc deposit is higher than the density of the surrounding rock of 1.18 g/cm3,the premise of developing high precision gravity survey.(2)Through the Huize lead-zinc mine area theory to the forward modeling of known lead-zinc mine and the high precision gravity survey of Xiao zhu qing surveyed area research and application of the proved the high accuracy gravity survey is to find the Huize lead-zinc mine effective geophysical exploration methods.High precision gravity method has the characteristics of small affected by electromagnetic interference,and is worth further popularization and application.(3)The result of the Xiao zhu qing surveyed area in Huize lead-zinc mining area by high precision gravity survey work,the part of the surveyed area obtain 12 gravity anomaly,which infer 5 prospecting significance,and 7 no prospecting significance abnormal.With prospecting significance of abnormal,comprehensive geological,geophysical and geochemical exploration data has carried on the qualitative and quantitative inference and interpretation,deduce the scale,occurrence,buried depth of the ore bodies.It Pointed out the direction for future work.