深部采动响应与灾害防控研究进展

掌握深部采动响应机制与灾害防控技术对于保障煤炭资源安全高效开采具有重要的现实意义。针对深部开采面临高地应力、高地温、高岩溶水压和强开采扰动的复杂环境,探讨了深部采动煤岩体响应特征。阐述了煤炭开采多物理化学场时空动态演化规律和多资源全生命周期动态叠加多相多场耦合致灾机理。最后,基于上述采动响应特征和多场耦合规律及致灾机理,从透明矿山及地质保障关键技术、灾害风险判识与监控预警关键技术和典型动力灾害防控关键技术3个方面讨论了深部采动灾害防控方法。未来应继续加大对深部开采基础研究支持力度,大力支持自主创新重大仪器及科学装置研究,重点开展深部煤炭开采应用基础理论和关键技术研究,依靠科技创新突破制约我国深部煤炭开采的理论与技术瓶颈。加强深部采动多物理化学场耦合灾变机理分析,实现深地资源地质精准勘探和三维地质可视化,建立深部采动灾害风险判识及合理性评价模型,以及开展多参量灾害预警与防控技术和装备研究,实现对灾害的有效预警和精准防控,综合形成深部煤矿灾害防控理论与技术标准体系。同时,在充分认清深部各种灾害特征、治理能力极限和技术经济可行性的基础上,科学确定开采下限。最终有效解决深部煤炭开采面临的科学问题和重大技术难题,促进深部煤炭安全高效开采。     

深部矿井工作面地质条件及其地球物理勘探技术

矿井深部延拓是解决我国东部煤田资源紧张的必然途径,深部开采中地质构造、矿井水、煤层瓦斯和项底板条件等是矿井生产的主要致灾地质因素。分析论述了当前煤田地球物理勘探主要技术方法的应用状况及特点,指出多波多分量地震勘探、矿井高密度直流电法、矿井瞬变电磁法及地质雷达等新技术方法及其综合应用将在深部矿井致灾地质因素预测预报中发挥重要作用。     

深部矿井工作面地质条件及其地球物理勘探技术

矿井深部延拓是解决我国东部煤田资源紧张的必然途径,深部开采中地质构造、矿井水、煤层瓦斯和顶底板条件等是矿井生产的主要致灾地质因素。分析论述了当前煤田地球物理勘探主要技术方法的应用状况及特点,指出多波多分量地震勘探、矿井高密度直流电法、矿井瞬变电磁法及地质雷达等新技术方法及其综合应用将在深部矿井致灾地质因素预测预报中发挥重要作用。     

超深金属矿床开采及开拓运输方案的技术经济论证

本方案论证力求反映现代超深金属矿床开采及开拓运输科学技术,重在深部矿床开采理论、技术及开拓运输方案的创新与提高。实现深部矿产资源的高效利用,针对深部高应力、高地温、高井深的特殊环境,结合深井高应力条件下的硬岩致裂理论技术、热环境控制、充填系统及运输技术等方面的专业理论和技术成果,提出超深金属矿床开采及开拓运输的技术性方案论证,以供学术和生产实践探讨。     

“十一五”国家科技支撑计划“特大型矿床深部开采综合技术研究”课题在金川启动

2009年4月23日,“十一五”国家科技支撑计划——“特大型矿床深部开采综合技术研究”课题在金川集团公司启动。“特大型矿床深部开采综合技术研究”课题由长沙矿山研究院、国家金属采矿工程技术研究中心、北京科技大学等单位参加研究。由于该课题立足于我国深井开采现实,结合金川二矿区深部开采的实际情况,开发特大型矿床深部开采综合配套技术,     

煤矿深部开采煤岩动力灾害多尺度分源防控理论与技术架构

煤矿进入深部开采后,煤岩体物性、应力、瓦斯等因素发生显著改变,开采覆岩扰动范围及动静载荷显著增大,矿井群联动致灾效应与大型地质体控制效应显现,冲击地压、煤与瓦斯突出灾害并存甚至相互转化,煤矿深部开采煤岩动力灾害防控已成为当前亟待解决的问题。针对我国煤矿深部煤岩动力灾害孕灾条件复杂且尚不清楚,相互转化机制不清,快速探测手段、科学有效的防控技术与装备缺乏的现状,凝练了深部开采煤岩动力灾害防控的关键科学技术问题,提出了多尺度分源防控深部煤岩动力灾害的思想,确定了深部开采煤岩动力灾害防控技术的攻关方向,构建了煤矿深部开采煤岩动力灾害多尺度分源防控理论与技术架构,最终将形成我国煤矿深部开采煤岩动力灾害多尺度分源防控理论与技术体系,为我国煤矿深部开采冲击地压、煤与瓦斯突出和复合煤岩动力灾害有效防控提供理论支撑和技术途径。     

深部大矿段连续开采工序与装备时空协同系统

依托十三五国家重点研发项目"深部大矿段多采区时空协同连续采矿理论与技术",针对深部矿床高应力特殊开采环境,突破传统浅部矿床开采以矿块为基本回采单元的固定模式,以多个采区组成的大矿段为回采单元,采用智能采掘装运设备和管控技术,将采切、凿岩、爆破、出矿、充填等回采工序依次在回采单元内的各采区连续协同推进,有效控制深部开采过程中的灾害风险。围绕深部矿床大矿段多采区协同作业连续开采新模式的科学问题,研究大矿段多采区集约化连续采矿生产过程调控技术,构建大矿段连续回采工艺的协同调控模式,创新大矿段连续开采模式下的不同开采工序与装备时空协同作业机制,进而研发出大矿段连续开采工序与装备时空协同系统,为深部金属矿集约化连续采矿提供理论与技术支撑。     

有色金属矿山深井采矿技术研究

随着有色金属矿产资源的不断开发，我国的浅表有色金属矿床即将消耗殆尽，迫使大多数有色金属矿山转入深部矿床开采。阐述了我国进行深井安全开采技术研究的必要性和国内外深井采矿技术现状，提出了深井采矿技术的研究方向。     

深部开采的突出和冲击耦合致灾机理探讨

鉴于我国煤炭深部开采面临的高瓦斯、高应力、低渗透性的问题,分析了煤与瓦斯突出和冲击地压的特点,探讨了深部开采时突出和冲击的耦合致灾机理及监测防治手段。提出了"爆破解危-柔性吸能-强力支护"的冲击地压防治体系。     

对我国金属矿床深部开采技术的探讨及展望

阐述了对我国金属矿床深部开采进行研究的必要性和迫切性；介绍了对金属矿床深部开采需要研究的主要内容，即采矿方法选择及优化、深部开采中岩层控制理论及技术、深部开采环境控制技术、空区处理及无废料开采技术、深井通风、降温、防毒、防水等技术。深部矿体开采技术是一项综合技术，是一项系统工程项目，需由国家组织攻关。     

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.     

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     

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.     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered