秦岭金矿60号脉西段1号矿体探采品位变化的初步分析与探讨

Preliminary analysis and discussion on ore grade change in prospecting and mining of No.1 orebody in the west section of No.60 vein in Qinling gold mine

秦岭金矿60号脉西段是杨寨峪矿区60号脉的西延部分,经过对该矿段几年来的基建勘探和生产勘探工作,发现矿体金品位有较大幅度下降。从探矿工程取样间距、特高品位处理、沿脉中段选择及群采影响等方面对品位下降的原因进行了探讨。

The west section of No. 60 vein ih Qinling gold mine is the western extension of No. 60 vein in Yangzhaiyu mining area. After several years＇ prospecting in construction and production process, it has been found that the grade of gold ore is much lower than that in the geological report. The paper discusses the causes in the following aspects, sampling space in exploration engineering, extra-high grade sample processing, choice of along-vein middle section and cluster mining influence.