论文部分内容阅读
我国脉金矿床均系中温热液破碎带蚀变岩型和高温热液石英脉型,其形态复杂多变,埋藏规模小,矿岩稳固性差。目前所使用的采矿方法主要有留矿法(占42.58％)、空场法(占25.80)、充填法(占31.46％)。40年来,中国黄金矿山因地制宜创造性地变革和发展了采矿工艺技术,如留矿全面法、水力充填采矿技术、无轨自行设备的使用,顶板加固技术、大孔落矿的高效采矿方法的使用等,使黄金矿山的采矿技术为之一新。但目前尚存在损失贫化大、矿块生产能力小、回采周期长、劳动强度大、开采强度低、机械化水平仍然不高、开采技术发展不平衡等问题。今后在金矿床开采中应致力于新的采矿方法研究和推广应用,改进和完善护顶技术,提高机械化水平。
The vein-gold deposits in our country are all characterized by altered rock type and high-temperature hydrothermal quartz vein type in the intermediate-temperature hydrothermal fractured zone, with complicated and changeable patterns, small scale of burial and poor stability of ore rock. At present, the mining methods used mainly include the retention method (accounting for 42.58%), the open field method (accounting for 25.80%) and the filling method (accounting for 31.46%). Over the past 40 years, China’s gold mines have creatively transformed and developed mining technology in light of local conditions such as the comprehensive mine retention method, hydraulic filling mining technology, the use of trackless equipment, roof reinforcement technology and the use of efficient mining methods for large hole mines. The gold mining technology to one of the new. However, there are still some problems such as large loss and depletion, small production capacity of ore blocks, long recovery cycle, heavy labor intensity, low exploitation intensity, low mechanization level and unbalanced mining technology development. In the future, gold mining should be devoted to researching and popularizing new mining methods, improving and perfecting roof protection technology and improving mechanization level.