凿岩机-岩石模型的延拓分析和实验

打开文本图片集

中图分类号：TH113.1；O322；TU631 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202403044

Continuation analysis and experiment in a drifter-rock model

MA Wei1²， ZHANG Jian³， JIANG Xin4，WU Wenzhang² （1.SchoolofResourcesand SafetyEngineering，UniversityofScienceand TechnologyBeijing，Beijing1o83，China; 2.Nanjing Baodi Meishan Industrial City Development Co.，Ltd.Mining Branch，Nanjing 2lO041，China; 3.School of Mechanical Engineering，University of Science and Technology Beijing，Beijing 1Ooo83，China; 4.XCMG Construction Machinery Co.，Ltd.，Xuzhou 221004，China）

Abstract：Theprincipleofthehydraulicdrifterisntroduced，andtheproessofdrilingintorocksbythedrfterisestablsedasa physicalmodelofrock withthree-degreeoffreedomdryfriction.Theconcptofrateofpenetration（ROP）isintroduced.Thestick and non-stickmodesarestudied，explainingthediferencesbetweenthesetotypesofmotion.Theperiodictrajectoriesofthenon linearpiecewisesmoothdynamicalsystemmathematicalmodelaresegmented.Byusingthepseudoarclengthcontinuationmethod andFloquettheory，theangularfrequencyandamplitudeofthehydraulicforcearetakenascontrolparameterstoobtainstableperiodictrajectoriesandthepointofmaximumROP.Bifurcationssuchasperiod-doublingbifurcation，saddle-node bifurcation，andto rusbifurcationarediscovered.Thedataacquisitionsystemfordrillngrockswithahydraulicdrifterisintroduced，andthedisplace mentand velocityofthepistonobtainedfromthemodelandexperimentsarecompared.Theresultsindicatethatomakethedrfter work on the period-1 trajectory，the range of angular frequency should be ω<6.814 ，and the range of amplitude should be 0.03 < （20 a<3.051 .There is astrongcorelationbetweentheexperiments and the model，and compared withtheexperiment，thepiston in the model undergoes deceleration before colliding withthedrilltool，，addingan impact deceleration stroke.

Keywords：hydraulicdrifter;rockmodel;continuation;Floquetmultipliei

液压凿岩机是钻机的关键部件，学者们已进行了多项研究以分析和改进其性能。（剩余20972字）