坑道高转速取心钻机钻具扶正装置
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摘要
结合现有坑道钻机的结构形式,设计一种新型坑道高转速钻机扶正装置。在机身前端靠近夹持器位置设置前扶正装置,通过轴承对高速旋转的钻具提供支点;在主轴后端设置后扶正装置,与卡盘同轴高速旋转,提供后支撑点;前、后扶正装置和卡盘对钻具形成稳定的支撑点,避免钻具在孔口的振动,提高了钻进的稳定性。该扶正装置首次在ZDY1200G型全液压坑道勘探钻机上使用,在牛家沟金矿完成孔径■ mm、孔深235.7 m钻孔1个,取心率达到91.2%。施工过程中,钻机的转速550～980 r/min,扶正装置能对钻具起到良好的支撑作用,钻具运转平稳。
Combined with the structure of existing tunnel rig, a new type centralizer device of high speed drilling rig of tunnel is designed. It sets a pre-centralizer device at the position of fuselage near the gripper, which provides a pivot for the high-speed rotating drilling tools through bearing. Meanwhile, it sets a post-centralizer device behind the main axle, which provides a post pivot and coaxial high-speed rotating with chuck. The front and rear centralizer devices and the chunk work together and form steady supporting points, which avoids vibration of drilling tools at orifice and improves the stability of drilling successfully. This new centralizer device was used on ZDY1200G type hydraulic tunnel exploration drilling rig for the first time at Niujiagou Gold Mine. It finished a drilling with diameter of 77 mm and depth of 235.7 m, and it's coring recovery rate reached to 91.2%. During the whole drilling process with the drill speed from 550 r/min to 980 r/min, this new type of centralizer device can support the drilling tools well, and help it running smoothly.
Combined with the structure of existing tunnel rig, a new type centralizer device of high speed drilling rig of tunnel is designed. It sets a pre-centralizer device at the position of fuselage near the gripper, which provides a pivot for the high-speed rotating drilling tools through bearing. Meanwhile, it sets a post-centralizer device behind the main axle, which provides a post pivot and coaxial high-speed rotating with chuck. The front and rear centralizer devices and the chunk work together and form steady supporting points, which avoids vibration of drilling tools at orifice and improves the stability of drilling successfully. This new centralizer device was used on ZDY1200G type hydraulic tunnel exploration drilling rig for the first time at Niujiagou Gold Mine. It finished a drilling with diameter of 77 mm and depth of 235.7 m, and it's coring recovery rate reached to 91.2%. During the whole drilling process with the drill speed from 550 r/min to 980 r/min, this new type of centralizer device can support the drilling tools well, and help it running smoothly.
引文
[1]常江华,凡东,刘庆修,等.水平孔绳索取心钻进技术在金矿坑道勘探中的应用[J].探矿工程(岩土钻掘工程),2012,39(1):40-43.
[2]史海岐,常江华,刘庆修.绳索取心钻进技术在大安山矿区的应用[J].化工矿物与加工,2013,42(3):34.
[3]凡东,殷新胜,常江华,等.ZDY1000G型全液压坑道钻机的设计[J].煤田地质与勘探,2011,39(1):78-80.
[4]冯德强.钻机设计[M].武汉:中国地质大学出版社,1993:167-169.
[5]杨惠民.钻探设备[M].北京:地质出版社,1988:96.
[6]梁俭,高元宏,陈宗涛,等.坑道钻探施工技术规程探讨[J].探矿工程(岩土钻掘工程),2016,43(9):89.
[7]徐国辉,万道含,杨树强,等.青海省都兰县五龙沟矿区坑道钻探工艺研究[J].探矿工程(岩土钻掘工程),2015,42(11):34-37.
[8]胡少韵.我国煤矿坑道钻探技术发展及存在的问题[J].煤田地质与勘探,1998,26(增刊):59-62.
[9]尹玉波,刘银.金刚石钻进规程的实验室模拟及参数校核[J].安全与环境工程,2003,10(3):69-71.
[10]温姝静.试谈如何提高金刚石钻进的效率[J].西部探矿工程,2011,23(4):69-72.
[11]万军.复合式胶套卡盘的设计[J].煤矿机械,2013,34(2):15-17.
[12]殷新胜,刘建林,冀前辉.松软煤层中风压空气钻进技术与装备[J].煤矿安全,2012,43(7):63-65.
[13]郭湧.钻机液压卡盘胶筒数值分析及结构改进[J].煤炭工程,2012,44(7):115-117.
[14]常江华,姚克,凡东,等.煤矿定向长钻孔坑道钻机顶部开放式复合夹持器的研制[J].煤矿机械,2011,32(7):148-150.
[2]史海岐,常江华,刘庆修.绳索取心钻进技术在大安山矿区的应用[J].化工矿物与加工,2013,42(3):34.
[3]凡东,殷新胜,常江华,等.ZDY1000G型全液压坑道钻机的设计[J].煤田地质与勘探,2011,39(1):78-80.
[4]冯德强.钻机设计[M].武汉:中国地质大学出版社,1993:167-169.
[5]杨惠民.钻探设备[M].北京:地质出版社,1988:96.
[6]梁俭,高元宏,陈宗涛,等.坑道钻探施工技术规程探讨[J].探矿工程(岩土钻掘工程),2016,43(9):89.
[7]徐国辉,万道含,杨树强,等.青海省都兰县五龙沟矿区坑道钻探工艺研究[J].探矿工程(岩土钻掘工程),2015,42(11):34-37.
[8]胡少韵.我国煤矿坑道钻探技术发展及存在的问题[J].煤田地质与勘探,1998,26(增刊):59-62.
[9]尹玉波,刘银.金刚石钻进规程的实验室模拟及参数校核[J].安全与环境工程,2003,10(3):69-71.
[10]温姝静.试谈如何提高金刚石钻进的效率[J].西部探矿工程,2011,23(4):69-72.
[11]万军.复合式胶套卡盘的设计[J].煤矿机械,2013,34(2):15-17.
[12]殷新胜,刘建林,冀前辉.松软煤层中风压空气钻进技术与装备[J].煤矿安全,2012,43(7):63-65.
[13]郭湧.钻机液压卡盘胶筒数值分析及结构改进[J].煤炭工程,2012,44(7):115-117.
[14]常江华,姚克,凡东,等.煤矿定向长钻孔坑道钻机顶部开放式复合夹持器的研制[J].煤矿机械,2011,32(7):148-150.