旋进式触探机制研究

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摘要通过切削机制的引入，对角片式探头切削刃的受力进行分析，除建立轴向负荷与扭矩之间的数学模型外，还建立作用在探头上轴向负荷、扭矩与探头的运行参数(探入速度和旋转速度)及岩土体物理力学参数间的数学模型，并通过室内试验验证数学模型的存在性。根据数学模型分析轴向负荷、扭矩的影响因素，明确旋进式触探技术的理论依据：当机械运行参数，探头直径、材料及型式都相同时，轴向负荷和扭矩只与岩土体物理力学性质有关。将静力触探的轴向负荷与旋进式触探进行比较，从根本上解释旋进式触探技术能在岩体中得到应用的原因。

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关键词 ：岩石力学, 岩土工程勘察, 静力触探, 旋进式触探

Abstract：Based on the cutting mechanism，besides the mathematical model for torque and axial force being established，the mathematical model for torque and axial force on the probe，changing with the penetration velocity，the rotary velocity of the probe and the physico-mechanical parameters of rock and soil masses，is also developed by analyzing the forces on cutting edges of probe. In addition，the validity of the mathematical model is proved according to the data from laboratory experiment. The influence factors on the torque and the axial force of probe unit are analyzed；and the theoretical basis of rotary penetration technique，which is made clearly，is that the values of axial force and torque of the probe unit only depend on mechanical property of rock and soil masses when the running mechanical parameters of machine，probe diameter，materials and form of the probe are all the same. Moreover，the axial force of rotary penetration test is compared with that of static cone penetration test to fundamentally explain the reason why rotary penetration test can be applied to rock mass.

Key words： rock mechanics geotechnical engineering investigation static cone penetration rotary penetration

收稿日期: 2009-07-17

引用本文:

宋玲1，2，李宁1，刘奉银1. 旋进式触探机制研究[J]. 岩石力学与工程学报, 2010, 29(S2): 3519-3525.
SONG Ling1，2，LI Ning1，LIU Fengyin1. STUDY OF MECHANISM OF ROTARY PENETRATION. , 2010, 29(S2): 3519-3525.

链接本文:

http://www.rockmech.org/CN/Y2010/V29/IS2/3519

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