绳索取心钻探现状及其发展

在地质矿产勘查中采用绳索取心钻探技术发源于美国长年公司,迄今已有45年历史。由于钻探孔深总的趋势是愈来愈深.超硬材料的变革出现了更长寿命的钻头,新型材质与结构的钻杆大大提高了钻杆柱的强度,从而赋予了绳索取心钻探技术的不断发展的生命力。在长时期的应用实践中,充分体现     

西平铁矿深孔绳索取心钻探技术应用

绳索取心钻进技术已经广泛用于钻探工程中,深孔钻探采用绳索取心技术可大大提高钻探效率和钻探质量。结合西平铁矿对深孔绳索取心钻探技术进行了应用研究,阐述了深孔绳索取心钻探过程中,钻孔结构的优化以及匹配合理钻具型式的重要性。还就泥浆体系和孔斜控制等关键技术进行了探讨。     

建材非金属矿钻探技术的新进展

建材地质勘探技术，随着钻探技术的不断发展，结合矿床地质特点，由比较单一的钻进方式逐步发展成多种钻进方式，以配合不同矿区地层岩性，对岩矿心不同的要求采用不同的方式、不同的钻头类型来完成矿区地质勘探任务。当前，我系统在应用新技术、新方法，如绳索取心、冲击回转、空气洗井、水力连续取心以及新型切削材料、特殊矿种取心等方面也有不同程度的发展与特色。人们一般认为绳索取心技术用于深孔效果较好，而用于浅孔则意义不大。然而，我们却利用钻具级配间隙小、提钻少或不提钻、对井壁破坏少的特点，以快速一钻终孔来钻探那些易于坍塌掉块、破碎漏失地层的浅孔，这不仅减少、甚至杜绝了孔内事故，节省了大量的护孔堵漏材料，提高了钻进效率，大大降低了钻探成本。     

绳索取样技术在工程勘察钻探中的应用与前景

绳索取心技术发展推广到今天，已成为钻探金属、非金属、煤田、某些水文地质和工程地质钻探的取心方法之一。只要钻头具有一定的寿命，不论深孔还是几十米浅孔采用绳索取心均可取得一定的技术经济效     

南方不稳定煤田绳索取心问题及对策

近年来，绳索取心钻进工艺在南方不稳定煤田试验应用，对于提高钻探效率，加速煤田地质勘探步伐起了积极作用。我局在赣西煤田开动了三台S75绳索取心钻机，在提高煤田钻探技术经济效果和质量方面，显示了这种新工艺的优越性，如下表所示。绳索取心在煤田应用，虽然见到了成效，但仍存     

深孔绳索取心钻探技术现状及研发工作思路

本文简述了国内外绳索取心钻进技术发展及现状,分析了宝长年(BoartLongyear)公司绳索钻杆产品的规格参数,提出了国内开展深孔和特深孔绳索取心钻探技术研发的工作思路.     

小直径特深孔绳索取心口径系列及钻柱方案

现行绳索取心口径系列主要适用于3000 m以内浅钻孔。在4000 m左右的特深孔绳索取心钻进中,存在一定的技术"瓶颈",如地层复杂,甚至无法安全钻达设计深度。论证3000~5000 m特深孔绳索取心合理口径系列和钻柱方案是为特深孔成套钻探装备研制、绳索取心钻具开发提供技术依据的重要前期工作,也是一项公益性和开放性的技术工作。简述了特深孔绳索取心口径系列及钻柱方案的初步设想,期望国内钻探专家、一线技术人员广泛参与,进一步论证。     

浅谈钻孔护孔与堵漏工艺

随着我国地质勘探、工程建设等事业的不断发展,绳索取心钻进技术日渐成熟,提高了我国钻探技术水平,充分显示了这项技术的优越性,同时也累积了大量的珍贵经验。为了让绳索取心钻进技术得到发展,必须足够重视复杂地层的钻进工艺措施。     

深部矿体勘探钻探技术方法研究

深部矿体勘探钻探技术方法研究的内容主要包括深孔分体塔式全液压动力头钻机及高强度绳索取心钻杆的研制、钻孔设计与轨迹动态监控技术研究、钻孔摄像及定向取心技术在地质勘探中的应用研究、深部岩心钻探钻进工艺方法研究等。研究按任务书设计要求完成,取得了良好的社会经济技术效果,为以后深部钻探施工技术提供了重要的指导和借鉴作用。     

张家口中地装备探矿工程机械有限公司HCD-5型全液压岩心钻机

1主要用途 HCD系列全液压岩心钻机是适用于绳索取心金剐石钻探工艺方法的专用机型,主要服务于矿山地质、环境地质、工程地质等领域的地质勘探作业。首批推出的HCDT-5（拖车式）和HCDU-5（履带装载式）全液压岩心钻机是在吸收国内外同类设备的众家之长的基础上,针对金刚石绳索取心的工艺特点,自主研发的一种主要用于中深孔取心钻探的地质技术装备。     

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     

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     

2014 second batch of rare earth quota released

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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