三维地震勘探在山西原平盘道煤矿的应用

针对山西原平盘道煤矿勘探区地形条件复杂、煤层埋深浅、部分地区黄土覆盖、部分地区基岩出露等三维地震勘探不利因素多的特点,采用了小炮距、小道距、高覆盖次数宽频带接收的三维观测系统,数据处理时采用地表一致性振幅补偿、初至折射静校正等手段最大限度提高资料分辨率。通过本次勘探进一步查明了测区内主要可采煤层的赋存形态和深度,共解释断层31条,未发现地质异常体。     

定向钻进技术在张集煤矿掩护巷道掘进探放水中的应用

定向钻进技术是煤矿井下深孔顺层钻进的有效手段。张集煤矿为了保证巷道掘进安全,引进该技术进行设计运输巷底部灰岩顺层探放水钻孔施工,保护范围覆盖设计巷道左侧和右侧40 m,设计钻孔3个。通过现场应用,完成1#钻孔孔深518 m,1-1#钻孔孔深483 m,2#钻孔孔深558 m,未见地层出水,成功实现了掩护巷道掘进探放水目的,并总结出"钻进岩性变化、地质资料判断、钻进方向指导、地质资料修正"探索式循环渐进钻进方法、"定向+复合"控层钻进方法和硬质岩层低速磨削开分支技巧等实践经验。张集煤矿使用顺层定向长钻孔替代了普通探放水钻孔,成为该矿掩护巷道掘进探放水钻孔施工的新技术。     

新疆托克逊县阿热塔格山地区物化探异常找矿探索

托克逊县阿热塔格山地区露地层主要为泥盆系上统破城子组,岩性为变质长石砂岩、大理岩化灰岩;区内岩浆岩较发育,出露的主要有蛇纹石化橄榄岩及斜长花岗岩;利用重磁电异常来圈定有利找矿区域,在重点地区布设综合物化探剖面来研究深部有利成矿的部分,已达到推断矿体赋存的状态,是覆盖区找矿的主要手段。     

五沟煤矿第四系松散层底部土体的沉积特征及含隔水性分析

针对五沟矿井田内"三隔"、"四含"沉积特征和含隔水性进行分析,得出"三隔"层(组)粘土类可塑性好,膨胀性强,厚度大,分布稳定,隔水性良好,是区域及煤矿内重要的隔水层(组);"四含"直接覆盖在煤系地层之上,是矿坑充水主要补给水源,但其"岩性"泥质含量高,渗透性差,补给条件较差,一般富水性弱。     

贵州凤冈二区页岩气地质条件研究

通过对凤冈二区展开的系列页岩气野外地质调查发现,区内暗色泥页岩地层共三套,分别位于奥陶系五峰组、志留系龙马溪组及寒武系牛蹄塘组。五峰组厚度较薄,仅1～8m ;龙马溪组较厚,出露较多,但暗色泥页岩层较薄,主要位于龙马溪组底部,厚3～35 m ;牛蹄塘组仅在具合村出露,出露总厚约89.47 m ,暗色页岩厚度约60 m。对区内出露较好的龙马溪组及牛蹄塘组进行了系统采样,做了有机碳含量、有机质成熟度等105项实验分析,对目的层页岩气有机碳含量、有机质成熟度、埋藏深度等地质条件有了较全面的掌握,为下一步有利区的圈定及后续工作的开展提供了有利依据。     

白土镇焦宝石型高岭岩矿石特征和深加工试验

安徽省萧县白土镇焦宝石型高岭岩资源十分丰富，已先后有白土镇粘土矿、费村煤矿、花甲寺煤矿等单位开采。焦宝石型高岭岩主要指高岭石含量在95％左右的灰白色高岭岩。矿石主要做耐火材料的原料，属于“硬质耐火粘土”。附近约20座耐火窑烧制熟料，年产约10万t。本区隶属华北地居区，区内主要出露古生界奥陶系、石炭系沉积岩。含矿岩系为晚古生代的煤系地层，含矿层位为二叠系下石盒子组的底部。地表仅见含矿岩系底部的红色铁铝质泥岩，但矿体埋藏不深。矿体主要呈透镜状和似层状，一般厚2～sin，平均2．sin，地质构造简单，层位稳定，易开…     

阿尔玛勒井田地质特征及煤层对比分析

阿尔玛勒井田位于伊犁盆地南缘边界地区,区内主要河谷中有含煤地层及老地层出露,主要含煤地层由上至下依次为中侏罗统西山窑组、下侏罗统三工河组和下侏罗统八道湾组。结合该区地质工作成果,对区域成矿地质特征进行了分析,结果表明:(1)区内露的地层主要为第四系、上第三系、侏罗系、三叠系及零星的二叠系;(2)矿区构造形态总体呈一盆式向斜构造,该复式向斜构造由南至北可划分为南部向斜带、中间凸起带和北部单斜带等3个次级构造单元,勘查区地处南部向斜带之上,区内构造复杂程度为中等。在上述分析的基础上,分别从岩性标志层、煤层特有标志层、测井曲线、煤层层间距、煤质特征等方面对阿尔玛勒井田小西沟群进行了煤层综合划分与对比分析,准确确定了M_1~#、M_3~#、M_5~#、M_7~#、M_8~#、M_9~#、M_(10)~#煤层的层位。分析结果对于矿区进一步开展煤矿资源找矿勘探及准确计算该区煤层储量有一定的参考价值。     

高强锚杆、鸟窝锚索、注浆锚杆在巷道维修中的联合使用

太平煤矿九采区泵房和变电所位于-320m水平,为开采九采区16上、17煤层服务。硐室围岩以粘土岩、粉砂岩、泥岩、粘土胶结的中砂岩为主,岩性松软、破碎且部分岩层遇水泥化,目前泵房和变电所出现了较严重的变形显现,主要表现为底臌、顶板下沉及两帮移近、喷层开裂等现象,严重影响了正常使用,决定进行维修。     

江西省信丰县铁石口地区地质特征

为给地质找矿和工程建设提供基础地质资料,对江西省信丰县铁石口地区进行了地质资料分析和野外地质调查。区内地层分布较为齐全,老地层和红层分布最为广泛,其中二叠系龙潭组有煤层出露,船山组和长兴组灰岩较为发育;区内构造较为复杂,向斜和推覆构造为区内主要构造,其中推覆构造上部主要为岩浆岩,构造下部见煤系地层;区内岩浆岩大面积出露,岩性主要为黑云斜长花岗岩,地表风化较为严重。     

灵寿县团泊口一带夕线石矿地质特征及选矿工艺

1矿区地质概况矿区位处山西断裂隆起区太行山断裂隆起带，区内地层主要为一套中深变质岩系，岩石混合岩化强烈。其地质构造表现为农级褶皱，断裂构造不甚发育，岩浆岩主要以脉岩形式出现。本区出露地层右太古界阜平群团泊口组（Arft）和南营组（Arfn）。其中团泊口组分为三段，下段岩性主要为角闪斜长、黑云斜长片麻岩夹浅粒岩及斜长角闪岩，在区内出露不全，位于本区东部边缘。中段和上段位于本区中部、为区内出露的主妥地层，中段主要为厚层状钾长钱粒岩、二长浅粒岩，底部钾长浅粒岩内含夕线石石英“球状”集合体，厚210m。上段主要为金…     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。