充填钻孔内管道磨损机理及易破损位置的确定

TD853.34; 充填钻孔是充填法矿山的关键工程之一,容易受到充填料浆的冲击而造成破损.金川公司数字化钻孔电视观测结果表明,充填钻孔存在一个严重破损区域,该区域位于充填钻孔内空气和料浆的接触面上.充填料浆自由降落,具有较高的末期下落速度,而以较高的动量和冲量冲击充填钻孔的内套管管壁.因此,充填钻孔的严重磨损深度,即空气与料浆的接触面高度,可以根据充填钻孔的高度、水平管道的长度、浆体的密度和水力坡度进行估算.实例研究结果表明,该估算方法具有足够的精度,有利于充填钻孔的日常管理和维护....

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Published in中国有色金属学报（英文版） Vol. 21; no. 11; pp. 2503 - 2507
Main Authors 张钦礼, 崔继强, 郑晶晶, 王新民, 王贤来
Format Journal Article
LanguageChinese
Published 中南大学资源与安全工程学院,长沙,410083%中南大学资源与安全工程学院,长沙410083 2011
金川集团有限公司,金昌737100%中南大学资源与安全工程学院,长沙410083 金川集团有限公司,金昌737100
Subjects
充填钻孔
冲击
易破损位置
充填管道
磨损机理
serious wear position
impact
vertical backfill drill-hole
backfill pipeline
wear mechanism
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Abstract TD853.34; 充填钻孔是充填法矿山的关键工程之一,容易受到充填料浆的冲击而造成破损.金川公司数字化钻孔电视观测结果表明,充填钻孔存在一个严重破损区域,该区域位于充填钻孔内空气和料浆的接触面上.充填料浆自由降落,具有较高的末期下落速度,而以较高的动量和冲量冲击充填钻孔的内套管管壁.因此,充填钻孔的严重磨损深度,即空气与料浆的接触面高度,可以根据充填钻孔的高度、水平管道的长度、浆体的密度和水力坡度进行估算.实例研究结果表明,该估算方法具有足够的精度,有利于充填钻孔的日常管理和维护.
AbstractList TD853.34; 充填钻孔是充填法矿山的关键工程之一,容易受到充填料浆的冲击而造成破损.金川公司数字化钻孔电视观测结果表明,充填钻孔存在一个严重破损区域,该区域位于充填钻孔内空气和料浆的接触面上.充填料浆自由降落,具有较高的末期下落速度,而以较高的动量和冲量冲击充填钻孔的内套管管壁.因此,充填钻孔的严重磨损深度,即空气与料浆的接触面高度,可以根据充填钻孔的高度、水平管道的长度、浆体的密度和水力坡度进行估算.实例研究结果表明,该估算方法具有足够的精度,有利于充填钻孔的日常管理和维护.
Abstract_FL Vertical backfill drill-hole is usually a key project in an underground mine with backfill method and can be easily damaged by impact of backfill slurry.Observation of the damaged vertical backfill drill-holes in Jinchuan Nonferrous Metal Corporation (JNMC),Gansu Province,China,given by a digital drill-hole video camera,indicated that there usually exist serious wear zones in casing pipe in vertical backfill drill-hole (CVBH).It was suggested that serious wear position of CVBH should be located at an interface between air and solid-liquid mixture within CVBH.Backfill slurry falls freely and impacts the wall of CVBH near the interface with great momentum and energy coming from high speed free fall of backfill slurry.The depth of serious wear position of CVBH,i.e.,free fall height of backfill slurry in CVBH,can be estimated by the height of vertical backfill drill-hole,the length of horizontal pipeline,the density of slurry and the hydraulic gradient of pipeline system.A case study indicated that the estimation equation of serious damage depth of CVBH was of enough accuracy and was helpful for daily maintenance and management of vertical backfill drill-hole.
Author 张钦礼
王新民
崔继强
郑晶晶
王贤来
AuthorAffiliation 中南大学资源与安全工程学院,长沙,410083%中南大学资源与安全工程学院,长沙410083;金川集团有限公司,金昌737100%中南大学资源与安全工程学院,长沙410083 金川集团有限公司,金昌737100
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Author_FL WANG Xin-min
CUI Ji-qiang
ZHANG Qin-li
ZHENG Jing-jing
WANG Xian-lai
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Issue 11
Keywords 充填钻孔
冲击
易破损位置
充填管道
磨损机理
serious wear position
impact
vertical backfill drill-hole
backfill pipeline
wear mechanism
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Publisher 中南大学资源与安全工程学院,长沙,410083%中南大学资源与安全工程学院,长沙410083
金川集团有限公司,金昌737100%中南大学资源与安全工程学院,长沙410083 金川集团有限公司,金昌737100
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