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黑龙江省是我国著名的砂金产区之一。砂矿主要是现代河谷砂矿,阶地砂矿次之,其他河床砂矿、残坡积砂矿以及古砂矿也有少量发现。大中型河谷砂矿长从几公里到几十公里,宽从几十米至几百米,冲积层厚4—8米,砂金矿富集于冲积层的底部及残积层的上部。近几年来,黄金生产在突飞猛进地向前发展。目前,全省已有近50条不同型号的采金船。这些船大部分是桩柱式,因排矿性质决定,排出的尾
Heilongjiang Province is one of the famous gold-producing areas in China. The sand ores are mainly the modern river valley sand ores, followed by the terrace ores, and the other river sand ores, the residual slope ores and the ancient sand ores are also found in small quantities. Large and medium-sized river valley sand mine from a few kilometers to tens of kilometers wide from tens of meters to several hundred meters, alluvial layer 4-8 meters thick, placer gold enrichment in the alluvial bottom and residual layer of the upper part. In recent years, gold production has moved forward by leaps and bounds. At present, there are nearly 50 different types of gold mining vessels in the province. Most of these ships are pillars, due to the nature of the discharge, the discharge of the tail