一、发展概况和开采技术特点我国有着悠久的采金历史,远在唐、宋时期就有砂金开采。到1884年我国黄金年产量达到43万两,其中黑龙江砂金产量就有26万两。后因帝国主义侵略,军阀连年混战,黄金产量才逐年下降。解放后,党和国家很重视黄金产量的发展,先后国家投资新建和扩建了一批较大型的国营黄金矿山。特别是一九七五年以来,国家采取了坚决措施,促进了黄金生产的迅速发展,产量逐年上升,发展远景更为喜人。 I. Overview of Development and Technical Features of Mining Technology China has a long history of gold mining, and as far as the Tang and Song dynasties, gold mining was concerned. By 1884, the annual output of gold in our country reached 430,000 taels, of which there were 260,000 taels of gold production in Heilongjiang. After the invading imperialists, the warlords scuffled year after year, gold production declined year by year. After the liberation, the party and the state attached great importance to the development of gold output. Countries successively invested in and built a number of larger state-owned gold mines. Especially since 1975, the state has taken resolute measures to promote the rapid development of gold production. The output is rising year by year and the development prospect is even more gratifying.