扩孔用集束式反循环潜孔锤设计与试验
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摘要
基于ZMK5530TZJ60(A)车载钻机、127/70 mm双壁钻具、大口径试验钻孔施工方法等条件,设计了710/311 mm扩孔用集束式反循环潜孔锤。该扩孔用集束式反循环潜孔锤是由3个常规正循环冲击器与215.9 mm潜孔锤钻头均布在同一圆周面上组合而成。在现场钻进试验过程中,其反循环效果良好,最高机械钻速为4 m/h,平均机械钻速达2.1 m/h,与同条件下常规牙轮钻头扩孔方法相比,提高了2.6倍。现场试验结果表明该710/311 mm扩孔用集束式反循环潜孔锤总体结构设计较为合理,同时也为下一步的改进设计提供了试验依据。
Comprehensively considering the three main factors including the structure characteristics of the ZMK5530TZJ60( A) truck- mounted drilling rig,the shape characteristics of 127 /70 mm double drill pipe,and the drilling process characteristics,710 /311 mm cluster reverse circulation DTH hammer has been designed. The borehole with cluster type reverse circulation DTH hammer is made up of three conventional normal circulation percussive and 215. 9 mm DTH hammer bit uniformed on the same circumference of a circle. The highest ROP was 4 m / h,and the average ROP was 2. 1 m / h,which increased more than 2. 6 times as compared to conventional cone bit drilling method under the same condition. Field tests show that its structural was reasonable,as well as test basis was provided for the next evolutionary design.
Comprehensively considering the three main factors including the structure characteristics of the ZMK5530TZJ60( A) truck- mounted drilling rig,the shape characteristics of 127 /70 mm double drill pipe,and the drilling process characteristics,710 /311 mm cluster reverse circulation DTH hammer has been designed. The borehole with cluster type reverse circulation DTH hammer is made up of three conventional normal circulation percussive and 215. 9 mm DTH hammer bit uniformed on the same circumference of a circle. The highest ROP was 4 m / h,and the average ROP was 2. 1 m / h,which increased more than 2. 6 times as compared to conventional cone bit drilling method under the same condition. Field tests show that its structural was reasonable,as well as test basis was provided for the next evolutionary design.
引文
[1]杨凡.大孔径逃生井在矿山抢险中的可行性研究[D].北京:中国地质大学(北京),2010.
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[3]刘振东.大孔径集束式潜孔锤结构与动力特性的研究[D].大庆:东北石油大学,2013.
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[5]王清岩,吕红权,高翼,等.旋挖钻机嵌岩桩施工用反循环潜孔锤钻具研究[J].工程机械,2013,44(10):14-18.
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[7]蒋荣庆,殷琨,王茂森.FGC-15型大直径单头潜孔锤钻具系统研制[J].探矿工程,1995(5):17-19.
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[2]冯起增,秦如雷,许本冲,等.全液压车装钻机在集束式潜孔锤反井施工中的应用[J].探矿工程(岩土钻掘工程),2014,41(6):23-26.
[3]刘振东.大孔径集束式潜孔锤结构与动力特性的研究[D].大庆:东北石油大学,2013.
[4]刘廷政,郑喜彦.大直径贯通式潜孔锤局部气举反循环钻进工艺研究[C]//中国水利学会地基与基础工程专业委员会第十一次全国学术技术研讨会议论文集.北京:中国水利学会地基与基础工程专业委员会,2011.
[5]王清岩,吕红权,高翼,等.旋挖钻机嵌岩桩施工用反循环潜孔锤钻具研究[J].工程机械,2013,44(10):14-18.
[6]甘心,殷琨,何江福,等.救援井用大直径贯通式潜孔锤及钻头的研制与试验[J].吉林大学学报:工学版,2015,45(2).
[7]蒋荣庆,殷琨,王茂森.FGC-15型大直径单头潜孔锤钻具系统研制[J].探矿工程,1995(5):17-19.
[8]王茂森,殷琨.大直径环式组合潜孔锤及钻进工艺研究[J].地质与勘探,2006(2):90-92.