开采倾斜近地表矿体地表及围岩变形陷落的模型试验研究

以某铜矿矿山一典型地质剖面为原型,运用物理概化模型试验,采用网格数字摄影测量方法量测模型剖面全场位移,分析了开采倾斜近地表矿体地表及围岩变形陷落随不同开挖步的变化规律。在模型试验中,开挖-75 m～-45 m之间的矿体,围岩扰动范围及地表下沉位移逐渐增大,第7步开挖完成后,采空区上方岩体开始出现离层,第9步开挖完成后,地表1～4测点之间形成一明显沉陷盆地,最大下沉位移达825 mm。模型试验研究的结果与现场及离散元数值计算结果基本吻合。     

采场组合矿压观测方案的研究

分析了传统矿山压力观测方法的不足,提出了采场组合矿压观测方案。通过对组合观测理论、观测方法、实施方案的论述,提出了一套理论上可行、实践中可用的实用矿压观测方法。实践表明,该方案对监测矿山压力的变化规律具有较强的可靠性,对煤矿企业的矿压观测方案部署具有较强的借鉴价值。     

非金属矿物在抗菌材料中的应用

对以非金属矿物沸石、蒙脱石等为载体的金属离子型无机抗菌剂的研 究作了简要介绍,并讨论了利用天然非金属矿产资源研制开发抗菌剂中应注意的问题。     

Genesis of the Mamut Porphyry Copper Deposit, Sabah, East Malaysia

Abstract: The Mamut deposit of Sabah, East Malaysia, is a porphyry type Cu‐Au deposit genetically related to a quartz monzonite (“adamellite”) porphyry stock associated with upper Miocene Mount Kinabalu plutonism. The genesis of the Mamut deposit is discussed based on petrology of the intrusives in the Mount Kinabalu area combined with ore– and alteration–petrography, fluid inclusion and sulfur isotope studies. Groundmass of the adamellite porphyry at Mamut is rich in K which suggests vapor transport of alkaline elements during the mineralizing magmatic process, while the groundmass of the post‐ore “granodiorite” porphyry at Mamut contains small amounts of normative corundum suggesting depletion in alkaline elements at the root zone of the magma column. Sub‐dendritic tremolitic amphibole rims on hornblende phenocrysts in the Mamut adamellite porphyry suggest interaction between the mineralizing magma and the exsolved fluids. Occurrences of clinopyroxene microphenocrysts and pseudomor‐phic aggregates of shredded biotite and clinopyroxene after hornblende phenocrysts in the barren intrusives imply lower water fugacity and decreasing in water fugacity, respectively. Compositional gap between the core of hornblende phenocrysts and the tremolitic amphibole rims and those in the groundmass of the Mamut adamellite porphyry suggests a decrease in pressure. Higher X_Mg (=Mg/(Mg+Fe) atomic ratio) in the tremolitic amphibole rims in the Mamut adamellite porphyry compared to those of the barren intrusions suggests high oxygen fugacity. High halogen contents of igneous hydrous minerals such as amphiboles, biotite and apatite in the Mamut adamellite porphyry suggest the existence of highly saline fluids during the intrusion and solidification of the mineralizing magma. Fluid inclusions found in quartz veinlet stockworks are characterized by abundant hypersaline polyphase inclusions associated with subordinate amounts of immiscible gaseous vapor. Both Cu and Au are dispersed in disseminated and quartz stockwork ores. Chalcopyrite and pyrrhotite as well as magnetite are the principal ore minerals in the biotitized disseminated ores. Primary assemblage of intermediate solid solution (iss) and pyrrhotite converted to the present assemblage of chalcopyrite and pyrrhotite during cooling. Subsequent to biotitization, quartz veinlet stockworks formed associated with retrograde chlorite alteration. The Cu‐Fe sul–fides associated with stockwork quartz veinlet are chalcopyrite and pyrite. Overlapping Pb and Zn and subsequent Sb mineralizations were spatially controlled by NNE‐trending fractures accompanying the phyllic and advanced argillic alteration envelope. Sulfur isotopic composition of ore sulfides are homogeneous (about +2%) throughout the mineralization stages. These are identical to those of the magmatic sulfides of Mount Kinabalu adamellitic rocks.     

非测绘专业测量学课程改革的实践与思考

介绍我校工业总图设计等专业测量学课程为适应专业培养目标的需要,在教学内容选择、教学改革实践与思考方面的作法与体会,对非测绘专业测量学课程内容的调整、教学手段改革等有一定的参考意义。     

兴隆庄煤矿3煤顶板岩层富水性分区

分析了矿井顶板水害及防治现状,以兴隆庄煤矿４３１８工作面为例,用信息拟合方法对顶板富水性进行分区,应用模糊评判预测方法进行了顶板水量预测计算：涌水量等级为３级,正常涌水量为０．５～１．５ｍ＾３／ｍｉｎ,最大涌水量为２．２５ｍ＾３／ｍｉｎ,与实际涌水量一致。     

矿井电穿透方法技术的研究

通过研究工作面两巷道间电穿透建场理论和方法技术,优化出单极—偶极法等6种电穿透技术,用于探测工作面顶底板内的电性变化;煤层偶极—偶极法用于探测工作面煤层内的电性变化,为分别探测工作面顶底板内和煤层内的含、导水构造提供了一套新技术。      

福建龙岩马坑铁矿浅部矿床详细技术经济评价

本文以马坑铁矿浅部矿床为例,论述了矿床技术经济评价的基本方法。作者的研究表明,马坑铁矿浅部矿床的开发建设,在地质上是可能的,技术和经济上也是可行,合理的。     

基于GIS的矿山空间数据库的建立

矿山在生产过程中积累的大量数据是进行矿床分带性及矿体空间分布研究最基本和最重要的资料,如何对这些资料进行科学有效的管理,是充分利用这些资料对矿床外围及深部进行成矿预测的关键。本文在阐述了地理信息系统（ＧＩＳ）的基本技术和功能的基础上,着重介绍了基于地理信息系统的矿山空间数据库的建立方法,并给出了江西银山多金属矿数据库系统实例。     

吉林王家店矿区成矿地质特征分析

在高级变质区会全栈“穹形构造”西缘“线性构造矿源域”基础上,经过古生代,特别是中生代的构造－岩浆作用改造叠加,在王家店花岗岩体风部、边缘、岩体之外,形成岩浆期后热液型金矿,其深部潜在远景有待进一步研究。