构造煤分布发育特征及其与层滑构造的关系研究

分析阐明构造煤和煤与瓦斯突出问题的关系,为矿区的安全生产提供有效准确的地质信息,从层滑构造的角度探讨构造煤的成因及分布规律,研究煤与瓦斯突出问题和构造煤的关系机理.研究矿区层滑构造与构造煤的关系流程:基于钻孔测井曲线判识构造煤的特征和分布、构造煤类型、发育位置及其厚度,通过层滑构造的分布发育特征来探讨构造煤与层滑构造的关系.结果表明:潘集矿区11-2煤层的构造煤类型主要为Ⅱ类和Ⅲ类,矿区层滑带主要集中在煤层底部,对煤层底板造成较严重破坏.矿区主要发育断裂式层滑构造,造成煤层揉皱破碎较少.构造煤发育程度分布是矿区中西部是深部比浅部强,矿区东部是浅部相比于深部较发育,深部构造煤不发育.     

禹州煤田构造控煤特征分析

阐述了禹州煤田总体构造特征,分析了断层、向斜、滑动构造等因素对该区主要可采煤层二 1煤层赋存和分布的控制作用,论述了构造控煤因素对二1煤层厚度、煤质的影响,为预测新的有利含煤区指出了参考方向.     

大峪沟矿区二_1煤层瓦斯赋存规律研究

运用瓦斯地质分析方法,分析了大峪沟矿区区域地质演化及矿区地质构造特征,探讨了大峪沟矿区瓦斯赋存影响因素。分析表明:大峪沟矿区瓦斯赋存受将军岭滑动构造带影响明显,矿区二1煤层位于滑动构造带后缘拉张带,区内瓦斯含量普遍较低;受滑动构造影响,煤层顶底板破碎,且赋存不稳定,煤厚变化是影响区内瓦斯赋存异常的重要因素;受区域单斜构造影响,东部煤层埋深大,瓦斯含量相对较高,且随埋深的增加瓦斯含量增大。最后基于瓦斯地质规律对煤矿安全开采提出建议。     

构造煤煤层气分压合排产气效果及影响因素分析

针对平顶山矿区构造煤发育、瓦斯危害严重的现状,为探讨分压合排技术在平顶山矿区瓦斯地面抽采中的适用性,通过分析平顶山矿区首山一矿四2、二1煤层分压合排的产气效果和影响因素,探讨了四2、二1煤层分压合排产气效果不佳的原因。结果表明:首山一矿四2、二1煤层的储层压力及压力梯度、渗透率、煤层顶底板岩石特征和水文地质条件差别不大,对分压合排的效果影响不大;而较大的煤层间距、二1煤层相对较小的临界解吸压力和四2煤层松软的煤体结构,严重影响了分压合排的效果,造成产气效果不佳。因此,在现有技术条件下不适合对首山一矿四2、二1煤层采用分压合排技术。     

荥巩煤田构造变形对二_1煤层厚度的影响

后生变化是影响煤层形态和厚度变化的重要原因。聚煤期后构造变形对煤层的改造普遍而强烈,掩盖了原生沉积环境对煤层形态和厚度的影响。论述了聚煤期后不同样式的构造变形对二1煤层的影响:正、逆断层和重力滑动断层对该区煤层形态和厚度变化的影响范围局限,印支期的顺二1煤层的层间滑动变形是引起煤层流变最重要的原因之一,也是该区构造煤形成和煤厚大幅度变化的根本原因。     

基于低温液氮实验的不同煤体结构煤的孔隙特征及其对瓦斯突出影响

采集淮南煤田3个不同矿区13-1煤层、焦作矿区中马村煤矿二1煤层不同分层的不同煤体结构煤样进行低温液氮吸附试验,分析研究了不同煤体结构构造煤的孔隙特征。由此将构造煤的低温液氮回线划分为H1、H2、H3三类,构造煤的孔隙划分为4类：两端开口的孔,一端开口的孔,墨水瓶形孔和狭缝形孔。碎裂煤中主要为一端开口的圆筒形孔和两端开口的圆筒形孔;碎粒煤和糜棱煤则主要包含狭缝形平板孔、墨水瓶形孔和一端开口的圆筒形孔。研究表明：构造煤对气体的吸附一般发生在孔径3.3 nm左右的孔隙;随煤体破坏强度增大,比表面积和孔体积的分形维数均在增大。综合孔隙特征研究结果,对糜棱煤、碎粒煤煤层分布发育地区容易引发瓦斯突出的机制进行了探讨。     

平顶山矿区构造煤分布规律及成因研究

通过对平顶山矿区内丁、戊、己3个主要煤组中的构造煤研究,发现矿区内构造煤分布具有分布性、多层性和多期性的规律,结合矿区煤系地层组合行征及岩石力学性质分析和构造演化史及矿区构造发育规律研究,提出地质构造多期性赞成构造煤多期性,顺煤层滑动造成构造煤呈层分布,断层选层发育控制构造煤选层分布的观点。     

观音堂矿区构造特征及其对煤厚、开采的影响

观音堂矿区主要可采煤层为二,煤,矿区内断裂发育,含煤地层赋存格局受到构造制约.在分析区域构造及演化特征的基础上,依据钻孔和矿井地质资料,总结观音堂矿区地质构造发育特征以及其对煤层厚度、煤层开采的影响,对今后规划矿井采区、布置巷道工作面及矿井安全生产均有指导意义.     

超化煤矿二_1“三软”煤层瓦斯地质规律研究

运用板块构造理论和区域构造演化理论,研究了新密矿区超化煤矿的矿区、矿井构造演化,构造应力场,构造变形,构造发育,构造控制瓦斯特征;研究了各个不同方向的断裂活动和力学特征,以及滑动构造对煤层变形、破坏而形成构造煤的控制特征。对超化煤矿主采的二1“三软”煤层瓦斯生成、保存条件进行了科学的分析,深入地研究了矿井二1“三软”煤层瓦斯地质规律,从而为有的放矢地治理矿井瓦斯灾害奠定了理论基础。     

阿艾矿区瓦斯地质规律研究

在收集整理阿艾矿区瓦斯地质资料和生产资料的基础上,运用瓦斯赋存构造逐级控制理论,分析矿区地质构造演化及分布特征,研究地质构造、顶底板岩性、煤层埋深、煤层厚度和构造煤等地质因素对瓦斯赋存的影响。结合地勘期间和生产过程中测定的煤层瓦斯参数,得出了阿艾矿区的瓦斯地质规律。研究表明,构造煤和煤层埋藏深度是影响煤层瓦斯赋存的主控因素。     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

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