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一、问题的提出伽玛取样结果需进行刻槽取样加以外检。由于刻槽取样一般只有5厘米深,而伽玛取样影响范围可达几十厘米。这种代表范围的不同,当矿化不均匀时就会明显地反映出差别来。如沿垂直坑壁方向矿体含量由外向里显著变低,对只有5厘米厚的刻槽取样影响不大,而对伽玛取样来说,由于内部含量的减低减小了所测伽玛强度,就会使取样结果所得含量偏低。为了减小这种代表范围不同所产生的影响,过去的做法是加大对比量,使含量的外高里
First, the problem raised Gamma sampling results need to be grooving to be outside the inspection. As the notch sampling is generally only 5 cm deep, while the gamma sampling range of up to tens of centimeters. The difference in the range of such representations clearly reflects the difference when mineralization is uneven. For example, the content of ore body along the direction of vertical pit wall is significantly lower from outside to inside, which has little effect on the groove sampling of only 5 cm. For gamma sampling, the measured gamma intensity is reduced due to the decrease of the internal content , It will make the result of the sampling result is low. In order to reduce the impact of the differences in the scope of such representations, the past practice has been to increase the amount of contrast to make the content of outer highness