本文通过力学分析与数学推导，对已有的三种钻进模型进行了分析推理。
By using strict mechanical analysis and mathematical treatment, three rock-bit interaction models reported in literature are analyzed.
我们之所以能够钻进别人的脑袋，是因为我们大脑是个超级模拟器——比方说，我们可以建立一个模型，预测网球从哪里飞过来，然后判断是上网截击还是到底线防守。
We can do this because our brains are fantastic simulators - we can, for example, predict the paths objects will take through space and the decisions we should make now to cause a future event.
在全面分析钻井机械的组成、钻进过程的特点和人的特性的基础上，建立钻机钻进过程人机系统可靠性模型。
Based on an analysis of the composition of drilling rig, characteristics of drilling process, and human features, a reliability model of man-machine control system for drilling process is established.
基于单个截齿的受力模型，对掘进机截割头钻进工况载荷进行了计算机模拟，为截割头的结构设计和参数优化提供了理论依据。
Based on the mechanical model of single bit, drilling loads on the cutting head of tunneling machine are simulated by means of computer in this paper.
从水平定向钻进的工程实际出发，借助于现场钻进数据库，建立了自然参数模型，给出了相应的钻孔轨迹预测算法。
A natural parameter model to forecast the direction of the actual borehole based on the local drilling database in practical situation is studied.
利用该优化模型对不同加工条件下的浅孔钻进行优化，得到使径向合力及扭矩为最小时的钻头结构参数。
With the help of this optimization model, the optimized drill structure, which will generate minimum radial cutting force and torque, can be determined for different cutting conditions.
在全面分析钻井机械的组成、钻进过程的特点和人的特性的基础上，建立钻机钻进过程人机系统可靠性模型。
Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up.
根据“承力区假说”，建立了牙轮钻头钻进岩石过程的数学模型和模拟方法。
The mathematical model and analogy method for the penetrating process of roller bits arc established according to the load-bearing region hypothesis.
根据“承力区假说”，建立了牙轮钻头钻进岩石过程的数学模型和模拟方法。
The mathematical model and analogy method for the penetrating process of roller bits arc established according to the load-bearing region hypothesis.
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