危机矿山资料二次开发与应用效果

Secondary development and application effect of geophysical data in crisis mine

危机矿山深部及外围找矿是当前和今后地质勘查的主战场之一。近几年开展的危机矿山找矿取得了明显的地质找矿效果;但由于老矿山多年开采和建设,人为干扰特别严重,开展新的地面物探工作难度大,效果不好。实践证明,充分开发和利用老矿山丰富的地质、地球物理、地球化学资料,对资料进行二次开发和精细解释,是十分重要的,可以取得事半功倍的效果。文章以梅山铁矿为例,通过对梅山重磁异常的二次开发和精细解释,取得了明显的地质找矿效果。

The geological prospecting in the deep crisis mines and on its surroundings is one of the main battlegrounds in the current and future exploration. Prospecting on the crisis mine in recent years has been carried out, with very effective geological pros- pecting results; However, due to old mine suffering mining and construction for many years, human interference is quite serious, which makes new ground geophysical work very difficult to be carried out, without good effect. Practice has proved that it is very important to develop and make full use of the rich geological, geophysical, geochemical data of old mines, with the second development and detailed interpretation on old data, which can achieve a multiplier effect. In this paper, Meishan Iron Mine is taken as an example, and re- markable geological prospecting results have been achieved through the secondary development and interpretation on gravity and magnetic anomalies of Meishan.