论煤炭地质钻探施工质量控制中的监理工作

在煤炭地质勘查监理的工作目标是"三个控制、二个管理、一个协调",质量控制是监理工作的核心。结合煤炭地质勘查行业的现状及钻探施工中存在的问题,探讨做好煤炭地质勘查质量监控的措施及方法。     

河南省地质矿产勘查开发局第二地质环境调查院

<正>河南省地矿局第二地质环境调查院隶属于河南省地质矿产勘查开发局,是专业从事公益性、基础性、前瞻性及战略性地质环境调查任务的省直公益事业单位。先后荣获国家"功勋地质队"、部首批"文明单位"、河南省"五一"劳动奖状、河南省地矿系统先进单位等荣誉称号。拥有水工环地质调查、液体矿产勘查、地质钻探、固体矿产勘查、地球物理勘查、水资源论证、地质灾害治理工程的评估、勘查、施工、设计、监理以及工程物探、     

地质灾害防治工程监理工作浅析

近年来,地质灾害防治工程作为新兴行业正在逐步规范发展。根据《地质灾害防治工程监理规范》和相关工程技术标准,结合个人长期工作体会,探讨地质灾害防治工程监理工作的主要内容、工作手段与检测方式和工作重点、难点及发展方向建议。认为监理工作开展的好坏直接影响防治工程的施工质量、投资金额、建设工期、运营效果;监理单位选派的项目监理工程师应具备基础的水文地质、工程地质、环境地质、监理专业知识,同时具有项目管理经验和较强的沟通协调能力;在施工阶段监理的基础上,地质灾害防治工程监理单位可以提供项目咨询、招标代理、造价咨询等多元化的"菜单式"咨询服务。     

浅议如何做好煤炭地质勘查中的监理工作

煤炭勘查监理是控制煤炭勘查施工质量、施工进度、投资费用有效、必要的手段;做好这项工作要制定完善的监理规划、监理细则,监理工程师应有坚实的专业知识,要有从事煤炭勘查的丰富经验,要熟知国家有关政策法规,掌握行业规范、规程及技术标准;多方面积累经验,提升协调能力。提出监理工作除三控制一协调外要树立服务意识,这是做好煤炭地质监理工作的必备素质。     

煤层气勘查工程测井监理要点研究

依据煤田地质工程测井监理基本顺序,论述了煤田地质工程测井井场刻度检查监理以及测井工作前期准备工作的监理。并通过30年监理成果及监理实践经验,对比分析了煤田地质工程与煤层气勘查工程的测井监理方式以及测井参数监理要点,可为广大监理工作者在今后煤层气勘查测井工程中有目的、有重点、有针对性的开展监理工作,以提高监理质量,提高煤层气勘查工程质量。     

南京长江第四大桥南接线某段岩溶地质问题研究

南京长江第四大桥南接线某段以碳酸盐岩为主、岩溶发育,已成为制约该段工程的主要地质问题之一.根据现场勘查和地质资料,阐述了研究区的岩溶发育情况,分析了岩溶的发育条件以及该区岩溶发育的控制因素,并在一定程度上总结了岩溶发育的规律及特征,对后期设计、施工过程中做好相应的防范准备工作具有指导意义.     

采用数值法评价消耗型水源地水资源

通过对巴基斯坦塔尔煤电联营项目电厂供水水文地质详查勘测实例,对消耗型水源地进行了水文地质勘查及水资源评价,提出了一些工作方法,可供同类工程借鉴。     

关于做好滑坡地质灾害防治工程施工质量监理的思考

滑坡地质灾害防治工程具有其特殊性、风险性。施工质量监理控制贯穿于工程开工准备、施工过程、竣工验收与保修全过程。做好地质灾害施工质量监理控制工作对保障防治效果起着重要作用。结合施工全过程分析了滑坡施工质量监理需要重视的工作要点及控制措施。     

渭北岩溶水地质特征及钻井工艺

论述了渭北中部奥灰岩溶水资源分布特征,分析了岩溶水的开发利用现状及潜力,探讨了水资源开发利用中的问题,介绍了渭北岩溶井施工工艺,针对遇到流沙层时的泥浆配比及隔离止水问题,提出了新工艺,对施工岩溶井施工有一定的指导意义。     

中地装(重庆)地质仪器有限公司DUK-4超级高密度电法系统

正高密度电法属于直流电法的范畴,可观测视电阻率和视极化率等参数并形成2D/3D视电阻率/视极化率断面。具有数据采集密度大、观测精度高、施工效率高等特点,能直观准确地反映地下目标体的电性异常分布形态。高密度电法可广泛应用于岩溶、矿体采空区、考古、人防工程勘察;堤防隐患、山体滑坡等地质灾害勘察;公路、铁路、桥梁、构筑物地基等场地评价;金属与非金属矿产资源勘查;地下水位探测及水资源勘查。     

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。