滨海采矿引起的突涌水灾害对矿山的安全生产构成了极大威胁,计算巷道涌水的混合比,进一步分析其演化规律对于突涌水事故的防治具有重要意义.将幂律规则应用于三山岛金矿巷道涌水混合比数据的统计分析中,根据2个已有的混合比研究结果,采用概率密度函数p(S)对相邻2个监测周期的海水比例波动事件进行了拟合,拟合的相关系数分别达到0.92和0.93,说明海水比例波动值区间间隔的均值与概率密度的分布符合幂律分布.因此,采用幂律规则对研究区的涌水混合比进行统计分析是可信的.研究结果表明:不同方法得出的混合比,在幂律规则下反映出的规律是相同的;海水比例波动值大于48%的概率小于5%,因此将48%视为预警区间的临界值;F3断层附近的涌水点相对其他监测点海水比值波动较大,这是由于F3为导水断层且连通了海水,受采动的影响,F3断层周围的导水通道错综复杂且不稳定.
以"三下"开采矿山的工艺技术与灾害防控措施优化为目的,通过数值模拟的方法对三山岛金矿"三下"开采案例进行剖析,采用调查、模拟和监测等方法分析了"三下"矿山矿床的开采技术条件,结合充填法开采的相关参数分析"三下"开采对地表的影响.针对护顶矿柱与开采顺序进行分析,通过对比不同开采顺序方案的效果选取最优顺序方案.结果表明:房柱交替开采方法按隔二采一的开采方案进行开采对于矿山更为安全有效,房柱交替上升式充填采矿法使得矿石损失率由13%降为4%.结合分析结果,针对断层和地表水体等因素制定了严密的开采方案与防控措施,并对矿区地表进行沉降岩移监测,确保"三下"开采的安全和高效.
The water-riched overburden of a seabed mine poses threat to safe exploitation. The level -135 m strike drift of the Xinli mine district of Sanshandao gold mine in Shandong province was selected to be the survey site for electrical imaging, in order to map the groundwater distribution of the overlying rock under the level -135 mFour methods, which are; Wenner, Dipole-Dipole, Schlumberger and P-S were used at the selected drift, respectively. The apparent resistivity and inversion results obtained from using the Wenner, Dpole-Dpole and Schlumberger array, gave consistent information about the subsurface medium, which is that three different resistive layers exists beneath the -135 m level. The first rock mass which is highly resistive has an average thickness of 30 m and is located directly under the level -135 m, This indicates that little or no water exists in the rock mass between the levels of 135 m and -165 m since most of it have been discharged into 165 m drift. The rock mass ranging from 30 m to 60 m in depth under the -135 m level has low resistivity and fracture water. The polarizability of the P-S method relates to metal sulfide. P-S inversion results show two local anomalies that occurred at 370 m and 440 m along the survey line at shallow depth between 10 m and 15 m, which may be caused by rock mineralization. The obtained results show a good resemblance with the results obtained from hydrogeological surveys and hydrological structure analyses and that the gallery electrical imaging was able to map the water-bearing structures.
The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval(115±5Ma) of gold mineralization in China. Studies show that the east area of north China began its mantle plume evolution since the Yanshanian movement, and the Laiyang sub-mantle plume and its surrounding mantle branches such as those in Guojiadian, Aishan and Panshidian were formed in the mineralization concentration area of northwestern Jiaodong peninsula. With the development of mantle plume → sub-mantle plume → mantle branch → favorable expending structures, the deep-derived hydrothermal fluid moved up to the favorable places, such as brittle-ductile or ductile-brittle shearing zones, the internal and external contact zones of intrusions, dense fracturing zones and the contact zones between dikes and countryrocks, and concentrated into deposits. Then the gold mineralization concentration zones that are centralized on mantle branches were formed. This study takes Guojiadian mantle branch as an example to discuss their metallogenetism and conclude the metallogenetic mode.
The studies indicate that the metallogenic materials mainly comes from the core-mantle areas of the earth in the form of gaseous-gas-liquid mixed state-ore-bearing fluid.They migrated to the ductile-brattle zones,intruded internal and external contact zones of intrusives,contact zones between dykes and country rocks and formed mineral resources through mantle plumes to sub-mantle plumes and mantle branch structures,favorable tectonic extension zones.Ordered combination of ore fields,deposits and orebodyies(veins) of different deposit types have been formed as well.Therefore,tectonic ore-forming and ore-controlling should be paid more attention in order to guide the new round of geological prospecting and mineral resources evaluation.Cross cutting relation of Jiaojia fault and Sanshandao fracture in northwest Shandong Peninsula and its ore-controlling have been analyzed in this paper.
Northwest Shandong peninsula area is the largest gold ore concentration area in China.It has huge reserves,and ore-forming time is concentrated in 115±5Ma.It is show that since the Yanshan movement,eastern part of North China has come into the mantle plume evolution stage.Laiyang sub-mantle plume has been formed in northwest area,while Guojiadian,Aishan and Panshidian mantle branch structures have been formed in its peripheral areas.The ore-bearing fluid in deep-derived was migrated to favorable zones and formed gold resources,such as ductile-brattle or brattle-ductile zones,internal or external contact zones of intrusives,dense structural fractures,contact zones between dykes and country rocks through mantle plumes to sub-mantle plume and mantle branch structures,and formed gold ore concentrated area with mantle branch structure at the center.In this paper,setting Guojiadian mantle branch structure as an example,mineralization has been analyzed,and metallogenic model has been set up.
Analysis of joint occurrence in rock mass is an important and basic task in rock mechanics and rock hydraulics.This paper analyzes the merits and demerits of the traditional plots analysis method,the fuzzy equivalence clustering method and the fuzzy C-means clustering method(FCM).Then it proposes a synthetical method.This method is more accurate and reasonable according to the merits and demerits mentioned above when the above three methods are used alone.This synthetical method is applied to the group number and the superiority trends of joint occurrence in the rock mass at-555 levels in SanShandao Gold Mine.
Take the - 510 level and - 555 level as the example, statistical models of rock mass discontinuity characteristics are obtained based on site data via Matlab. Then the Monte-Carlo network simulation of rock fissures is achieved. Based on the fractal theory, the fractal dimension is decided. The study shows that the stability of north of F3 is better than that south of F3, with regard to the two levels. And both qualitative and quality analysis are given, which provide some proofs for mine security.
三(山岛)-仓(上)构造带处于山东招(远)-莱(州)金矿集中区西北部,该断裂带已发现三山岛金矿、新立金矿和仓上金矿3个大-特大型蚀变岩型金矿,总储量己超百吨,该构造带及已知矿深部还有很大找矿潜力。三个金矿床严格受NE向三-仓构造控制,金矿成矿成晕具有多期多阶段脉动叠加的特点。研究了3个金矿床的构造叠加晕特征,在研究其共性基础上建立了三-仓构造蚀变带深部盲矿预测的构造叠加
Based on geochemical background,geochemical and structurally imposed halo characteristics of Sanshandao gold deposit the structurally superimposed halo model of Au ore body in the deposit is established and criteria for the blind ore prediction determined.The model is used to predict blind ore and 4 targets are put forward.Gold ore is hit at some targets and result of the prediction is good.
After dealing with aluminum alloy sample,Calcium carbonate deposit aluminium at proper acidity,filter liquor is adjusted to proper acidity,adding manna sugar,Sodium hydroxide standard solution titrate to red.results of recovery tests found were in the range of 97.60%-102.67%。
铝硼合金经碱溶后,加硝酸酸化处理,加内标元素钇消除物理因素的影响.标准曲线通过加入铝基体校正基体效应的干扰,用电感耦合等离子体发射光谱法对铝硼合金中硼、硅、铁进行了分析.测定结果的相对标准偏差均小于2%(n=11),加标回收率在98.75~102.50%.
众所周知,目前国内外大型矿山都在搞数字化矿山,以适应时代的发展,满足矿山生产的需要,提高工作效率,降低企业成本。三山岛金矿结合生产实际,数字化矿山建设从数字化矿体着手,介绍了与专业数字技术公司合作开发的软件系统,讲述了数字化矿体在三山岛金矿的应用情况,提出了改进意见。
According to Standard Method for Reading Spectrometric Analysis of Aluminum and its Alloys, GB/T7999-2000 uses 4460 direct-reading spectrometer to analyze the main elements inside aluminum in- gots,and supplies relatively simple methods of assessment and confirmation for the uncertainty of the analy- sis results of each elements.It has extensive application significance in spectrometry.
以三山岛金矿为例,详细论述了地下水对矿山生产造成的各种危害,并进一步探讨了矿山所采取的各种防治水措施,通过综合的防治水工作,地下水危害已大大减轻,矿山效益明显.
阐述了三山岛金矿矿区地质概况、矿区构造的分布以及构造与成矿的关系、矿体及其围岩的地质特征,对矿体的圈定提出几点看法,对今后矿体开采及外围找矿具有指导意义.
通过对三山岛金矿排水成本的剖析,揭示了富水矿山,特别是大水矿山.搞好矿山地下水防治工作,特别是设法减少矿坑排水量,其效益可观、意义重大.
介绍了三山岛金矿区的水文地质概况,重新进行了深部水文地质条件的分区,并对各区进行了较为详细的水力学及水化学特征剖析,以便更好的指导深部地下水防治工作.