Investigation of the Dynamic Characteristics and Energy Consumption for Breaking Rocks Using the Impact Load
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摘要: 为了研究冲击钻井中岩石破碎的难易程度及动态破碎规律,基于固有缺陷的损伤原理,建立了岩石动态破裂强度、破碎时间和破碎能耗的理论模型,通过砂岩的霍普金森压杆冲击压缩试验分析了其破坏强度、破坏时间及破坏过程中的能量耗散特征。分析研究发现,试验结果与模型计算结果基本吻合,砂岩的动载强度、破碎时间和破碎能耗均与应变率之间呈幂函数关系,随着应变率在60~115 s-1范围内增加,砂岩的动载强度与静载强度相比增大了1.33~1.83倍,破碎时间从84 μs迅速缩短至52 μs,且应变率越大,岩石破坏后的碎块尺度越小、破碎能耗值越大。研究结果可为衡量岩石动力破碎的难易程度及提高冲击破岩效率提供参考。Abstract: In order to study the degree of difficulty of breaking rocks and the associated controls for dynamic breaking in percussion drilling, a theoretical model based on the principal of damage due to inherent defect. This model incorporated rock dynamic fracture strength, breaking time and energy consumption. Further, the failure strength, breaking time and energy consumption characteristics in the process of rock breaking were analyzed by means of the impact test on sandstone with the split Hopkinson pressure bar (SHPB). Results indicate that calculating result with the theoretical model is basically consistent with the results from laboratory tests, tand he relationship between the strain rate and three parameters as dynamic load strength, breaking time and energy consumption of sandstone appears to be a power function. When the strain rate increases in the range from 60 s-1 to 115 s-1, the dynamic load strength is 1.33-1.83 times higher than the static load strength, and the breaking time decreases from 84 μs to 52 μs rapidly. Moreover, the greater the strain rate and energy consumption, the smaller the rock fragments. The research results in this paper can provide a reference for evaluating the degree of difficulty in dynamic rock breaking and improving the rock breaking efficiency by using impact loads.
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[1] 许京国,尤军,陶瑞东,等.自激振荡式冲击钻井工具在大港油田的应用[J].石油钻探技术,2013,41(4):116-119. XU Jingguo,YOU Jun,TAO Ruidong,et al.Application of self-oscillating impact drilling tool in Dagang Oilfield[J].Petroleum Drilling Techniques,2013,41(4):116-119. [2] 李玮,闫铁,张志超,等.高频振动钻具冲击下岩石响应机理及破岩试验分析[J].石油钻探技术,2013,41(6):25-28. LI Wei,YAN Tie,ZHANG Zhichao,et al.Rock response mechanism and rock breaking test analysis for impact of high frequency vibration drilling tool[J].Petroleum Drilling Techniques,2013,41(6):25-28. [3] 马清明.水力脉冲诱发井下振动钻井技术[J].石油钻探技术,2005,33(1):12-14. MA Qingming.The down hole vibration drilling technique induced by hydro pulse[J].Petroleum Drilling Techniques,2005,33(1):12-14. [4] YARALI O,SOYER E.Assessment of relationships between drilling rate index and mechanical properties of rocks[J].Tunnelling and Underground Space Technology,2013,33(1):46-53.
[5] YAŞAR E,RANJITH P G,VIETE D R.An experimental investigation into the drilling and physico-mechanical properties of a rock-like brittle material[J].Journal of Petroleum Science and Engineering,2011,76(3/4):185-193.
[6] HARELAND G,WU A,RASHIDI B.A drilling rate model for roller cone bits and its application[R].SPE 129592,2010.
[7] 徐小荷,余静.岩石破碎学[M].北京:煤炭工业出版社,1984:6-157. XU Xiaohe,YU Jing.Rock fragmentation[M].Beijing:China Coal Industry Publishing House,1984:6-157. [8] 李夕兵,赖海辉,朱成忠.冲击载荷下岩石破碎能耗及其力学性质的探讨[J].矿冶工程,1988,8(1):15-19. LI Xibing,LAI Haihui,ZHU Chengzhong.A study of the dynamic properties and energy absorption of rock[J].Mining and Metallurgical Engineering,1988,8(1):15-19. [9] 李夕兵,赖海辉,朱成忠.岩石动载强度与岩石可钻性[J].湖南有色金属,1990,6(5):17-19. LI Xibing,LAI Haihui,ZHU Chengzhong.Rock dynamic strength and drillability[J].Hunan Nonferrous Metals,1990,6(5):17-19. [10] 张宗贤,寇绍全.关于岩石的动静态侵入断裂[J].北京科技大学学报,1990,12(5):401-407. ZHANG Zongxian,KOU Shaoquan.On rock fracture under static and dynamic indentations[J].Journal of University of Science and Technology Beijing,1990,12(5):401-407. [11] 高文学,刘运通.冲击载荷作用下岩石损伤的能量耗散[J].岩石力学与工程学报,2003, 22(11):1777-1780. GAO Wenxue,LIU Yuntong.Energy dissipation of rock damage under impact loading[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1777-1780. [12] 李夕兵.岩石动力学基础与应用[M].北京:科学出版社,2014:176-200. LI Xibing.Rock dynamics fundamentals and applications[M].Beijing:Science Press,2014:176-200. [13] CHO S H,OGATA Y,KANEKO K.Strain-rate dependency of the dynamic tensile strength of rock[J].International Journal of Rock Mechanics and Mining Sciences,2003,40(5):763-777.
[14] OLSSON W A.The compressive strength of tuff as a function of strain rate from 10-6 to 103/sec[J].International Journal of Rock Mechanics and Mining Sciences Geomechanics Abstracts,1991,28(1):115-118.
[15] 平琦,骆轩,马芹永,等.冲击载荷作用下砂岩试件破碎能耗特征[J].岩石力学与工程学报,2015,34(增刊2):4197-4203. PING Qi,LUO Xuan,MA Qinyong,et al.Broken energy dissipation characteristics of sandstone specimens under impact loads[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(supplement 2):4197-4203. [16] 许金余,吕晓聪,张军,等.围压条件下岩石循环冲击损伤的能量特性研究[J].岩石力学与工程学报,2010,29(增刊2):4159-4165. XU Jinyu,LYU Xiaocong,ZHANG Jun,et al.Research on energy properties of rock cyclical impact damage under confining pressure[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(supplement 2):4159-4165. [17] GRADY D E,KIPP M E.The micromechanics of impact fracture of rock[J].International Journal of Rock Mechanics and Mining Sciences Geomechanics Abstracts,1979,16(5):293-302.
[18] 陶俊林.SHPB系统实验技术研究[M].北京:科学出版社,2014:2-50. TAO Junlin.SHPB experimental technique[M].Beijing:Science Press,2014:2-50. [19] ZHANG Z X,KOU S Q,JIANG L G,et al.Effects of loading rate on rock fracture:fracture characteristics and energy partitioning[J].International Journal of Rock Mechanics and Mining Sciences,2000,37(5):745-762.
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