Study On Geogas Transportation Rule

With the exhausting of near-surface mineral resources, the increasing resourcerequirement of the social economic development, as well as the deepening ofexploration, the exploration of concealed ore deposit has become increasinglyimportant and gradually become a center of Attention. The Geogas measurement, as anew and effective methods and technique, has shown its great significance in thesearch for concealed ore deposit, getting a remarkable achievement. However, themechanism and theory of Geogas measurement are not perfect, especially it is not yetfully understand the Geogas transportation rule which restricts the promotion of theapplication of Geogas measurement methods.This paper is supported by the National Natural Science Foundation Project "TheGeogas field study on concealed geological bodies and fracture", the national ministryof scientific"son project of the deep detection technologyand experimental-radioactivedetection technology and experiment about deep metallogenic information the key oreset area of Nanling",The key project of natural science of education ministry ofSichuan province "research of geogas field on the concealed metallica deposits",treating lead and zinc deposit as the object of the study. It has been experimented bythe Geogas transport model simulation, and controlled with the air lead-zincmeasurement results in HSP, then got the Geogas transportation rule.The rock and ore samples of Geogas-transport model designed in this paper werecollected from HSP lead and zinc in Hunan Province.The specific implementation of Model experiment are as follows:1. Pestle the different samples of the mining area collecting ore and surroundingrock to200mesh.2. Put the processed samples in the electric source (temperature is adjustable)and place them in sealed isolation hood, maintaining isolation with the outside air. Invert an funnel in isolation cast, a bucket mouth hanging to the gas trap(polyurethane foam sample tablets).3. The updraft of the temperature difference will carry model releasenanoparticles migrate to the sample piece and to be captured. Remove a sample pieceevery certain number of days and keep it.4. Dispel the sample pieces of the model experiment by acid digestion, and thenanalyse element content through ICP-MS method.The5%dilute nitric acid solution is used in Huangshaping lead and zinc deposit.The ICP-MS methods analyzed the element contents.The data measured in experiments and mining areas were studied with variousmultivariate statistical methods.The main results achieved in this paper are:1. We got the experimental models of devices that meet the experimentalrequirements, which can be an important reference and the reference value in futuresimilar experiments.2. It shows that the lead and zinc samples which tend to a common enriched inMn, Cu, Zn, Sr, Ag, of Cd and Pd, U-and Au, As, and Bi, as a total of11elements, inwhich Mn, Cu, Zn, Ag, of Cd and Pd, and Au, As, and Bi are elements of Zn, Pbcommon element enrichment.3. The traditional views are that the abnormal elements gained in Geogasmeasurement are the associated elements closely related to concealed deposit captureto and ore-forming elements.However, after analysing the Geogas measurement results and model testmeasurements, it shows that Zn and Pb have a good correlation and tends to becommon enrichment. Li, Mn, Cu Zn, Y, of Cd, rare earth (La, Ce, Sm, Eu and Tm, Lu)and Pd, As, Mo, and Bi; Besides, Sr, Ag, U, Au and Zn, Pb are relatively connected.Take the lead and zinc deposit for example, not all of the associated elementsin Geogas measurement will show abnormal levels (eg, Sr, Ag, U, Au etc, only weakanomalies). In Geogas measurement, the rare earth elements, Li, Mo always can beseen as an important indicative elements to judge the existence of buried Pb-Zn.4. The result also shows that inspiring9elements of Mn, Cu, Zn, Ag, of Cd andPd, and Au, As, and Bi, the elements Li, Y, and some of the rare earth elements, Mohave good correlation and tend to be common enrichment with Zn of Pb. However, Sr,Ag, U, Au etc, capture relatively less in Geogas measurement but there is somecorrelation between certain common enrichment trend with Zn, Pb. 5. Factor analysis results indicate that the model test results and fieldmeasurement analysis results have very good consistency, according to the results ofanalysis needs to focus on elements should include: Sc, Cr, Mn, Ni, Cu, Zn, Sr, Pb.6. The elements carry out exploration concealed lead and zinc deposit in Geogasmeasurement, we can use these conclusions to measure if there are some abnormalcombination. It provides a scientific basis for future field site in Geogas measurementand a major reference and the reference value in predicting prospecting targets.