本文關(guān)鍵詞： 隱伏礦體 三維模型 礦化域 找礦預(yù)測　出處：《西北大學(xué)學(xué)報(自然科學(xué)版)》2017年03期 　論文類型：期刊論文

【摘要】：三維地質(zhì)建模方法在尋找隱伏礦床方面具有獨(dú)特的優(yōu)勢,尤其在地表礦化信息較少的地段,具有不可替代的作用。西澳大利亞由于第四系沖積物的覆蓋,地表找礦信息較少,使用常規(guī)的地球物理或地球化學(xué)方法進(jìn)行深部預(yù)測往往成本較高。該文利用研究區(qū)已有的勘查工程數(shù)據(jù),以Surpac軟件為平臺,建立起礦化域三維數(shù)字模型與塊體模型,同時運(yùn)用地質(zhì)統(tǒng)計(jì)學(xué)方法研究礦化域在空間上的分布形態(tài)和分布規(guī)律,并進(jìn)行綜合找礦預(yù)測。研究結(jié)果顯示,礦區(qū)礦化雖然沿走向方向連續(xù),但其主要為低品位礦連續(xù),而高品位礦在傾向和深部連續(xù)性好于走向方向,因此未來礦區(qū)勘查方向可以在走向和深部進(jìn)行傾斜。研究結(jié)果表明,礦化域三維數(shù)字模型找礦預(yù)測方法具有效果好、成本低等特點(diǎn),其對今后隱伏礦體的勘查及預(yù)測工作具有重要的參考意義。
[Abstract]:Three-dimensional geological modeling method has a unique advantage in searching for concealed deposits, especially in areas with less surface mineralization information. Western Australia is covered by Quaternary alluvial materials. The surface prospecting information is less, and it is often costly to use conventional geophysical or geochemical methods for deep prediction. This paper makes use of the existing exploration engineering data in the study area and takes the Surpac software as the platform. The 3D digital model and block model of mineralized area are established, and the distribution pattern and distribution law of mineralized area in space are studied by using geostatistics method, and the comprehensive ore-prospecting prediction is carried out. The results show that. Although mineralization in mining area is continuous along the direction of strike, it is mainly continuous in low grade ore, while the continuity of high grade ore in depth and tendency is better than that in strike direction. Therefore, the direction of exploration in the future mining area can be tilted in the direction of strike and deep. The results show that the method of prospecting and prediction in three dimensional digital model of mineralized area has the characteristics of good effect and low cost. It has important reference significance for the exploration and prediction of concealed orebodies in the future.
【作者單位】： 長安大學(xué)地球科學(xué)與資源學(xué)院;西北有色地質(zhì)礦業(yè)集團(tuán)有限公司;
【基金】：陜西省自然科學(xué)基金資助項(xiàng)目(2016JM4001) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金資助項(xiàng)目(310827151056,310827153408)
【分類號】：P618.51;P628

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本文編號：1493795