昆明东川区播卡金矿地质

播卡金矿紧邻小江深大断面西侧，系省内目前发现、赋存于中元古界昆阳群地层中的最大金矿之一。根据获得的资料，以已知金矿段为重点，系统介绍播卡金矿的地质特征、成矿规律及找矿标志。     

A diversified multiobjective GA for optimizing reservoir rule curves

The paper develops an efficient macro-evolutionary multiobjective genetic algorithm (MMGA) for optimizing the rule curves of a multi-purpose reservoir system in Taiwan. Macro-evolution is a new kind of high-level species evolution that can avoid premature convergence that may arise during the selection process of conventional GAs. MMGA enriches the capabilities of GA to handle multiobjective problems by diversifying the solution set. Simulation results using a benchmark test problem indicate that the proposed MMGA yields better-spread solutions and converges closer to the true Pareto frontier than the nondominated sorting genetic algorithm-II (NSGA-II). When applied to a real case study, MMGA is able to generate uniformly spread solutions for a two-objective problem involving water supply and hydropower generation. Results of this work indicate that the proposed MMGA is highly competitive and provides a viable alternative to solve multiobjective optimization problems for water resources planning and management.     

滇东南金成矿区(带)划分及找矿潜力分析

成矿区划分为2个金成矿带,10个金矿田。构造控矿明显,岩浆活动与金成矿关系密切,成矿具长期性和滞后性,类型多样,矿床(点)空间分布集中,金与锑(汞)关系共存,找金潜力较大。     

腾冲棋盘石铅锌多金属矿成矿规律探讨

矿区位于腾冲西北部东河铁、铜、铅锌多金属成矿区,区内早白垩世花岗岩浆活动强烈,矽卡岩型矿床发育,形成众多铁、铜、铅、锌矽卡岩型矿床,是腾冲西北部重要成矿区,棋盘石矽卡岩型铅锌矿即是其中之一。矿床形成与早白垩世中酸性花岗岩关系密切,矿体位于上二叠统碳酸盐岩外接触带矽卡岩中。地层、岩体对矽卡岩及矿体的控制作用明显。     

昆明东川一、四棵树铜矿成矿规律

落雪组是主要含矿层位。底部过渡层以斑铜矿、黄铜矿为主,中部含较多铜矿结核,顶部发育网脉状铜矿。具层控性,铜矿的规模与地层厚度有一定的关系。     

地气图预测全国月降水的实践总结

根据地热涡的移动规律和地热释放的持续性,我们设计了两种月降水的预测方法:(1)外推法,依据过去2~3个月地热涡和多雨区的移向、移速,外推下个月多雨区的位置;(2)"正多负少"规则,利用地热释放的持续性,对3.2 m地温月际变温为正的地区,预测下月多雨,月际变温为负的地区预测下月少雨("正多负少"规则)。此规则的历史拟合率约为65%。指出了5种不符合"正多负少"规则的情形及其可能原因。利用上述2种方法,从2005年9月开始进行全国降水预测试验,按全国统一评分方法,2年多来平均得分为67.5分,2007年12个月的平均得到70.5分。