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问题的提出个旧矿区的找矿向物探工作提出来的主要任务是:1.寻找深部硫化矿和浅部氧化矿;2.圈定控制成矿中心的隐伏花岗岩的起伏形态;3.在浮土覆盖区寻找含矿断裂带.该区的物性参数从表1可见: 1.花岗岩基本上没有磁性,氧化矿磁性不大,硫化矿埋藏太深,而浮土磁性干扰较大.曾大面积做过磁法,但效果不佳. 2.花岗岩与围岩(个旧灰岩)的密度和弹性波速度相差均不大;硫化矿与围岩虽有密度差,但埋藏深,地形切割,重力法没有取得明显效果.地震法因受条件、设备等限制未作研究.
PROBLEM PROBLEMS The main tasks assigned by the prospecting of Gejiu Mining Area to geophysical prospecting are as follows: 1. Finding deep sulphide ore and shallow oxide ore; 2. Delineating the undulating granite that controls the metallogenic center; Looking for ore-bearing fault zone.The physical parameters in this area can be seen from Table 1: 1. Granite is basically no magnetic, oxide ore is not large, sulfide ore is buried too deep, and the magnetic interference of the earth’s surface is larger. , But the effect is not good.2.The difference of density and elastic wave velocity between granite and surrounding rock (Gejiu limestones) is not big; Although the density of sulphide ore and surrounding rock is poor, the burial depth and the terrain cutting are not obvious Effect. Seismological Law due to conditions, equipment and other restrictions have not been studied.