This paper presents a unified supporting parameter optimization procedure for the coupled bolt-rock systems by using the orthogonal experimental methods. Convergence of surrounding rock surface and deformations in the rock are taken as the objective functions for the stability of the surrounding rock of the roadway. The key support parameters of the bolt are considered as input variables. The simulation software FLAC^3D is employed to develop the mechanical model for the coupled bolt-rock system and the objective functions of the coupled system are therefore obtained in the software. Combining the variance and multivariate linear regression analysis, an approach is derived to investigate the sensitivity of the support parameters to the objective functions. The corresponding support parameters are then optimized. The 15106 working of a practical mine in Yangquan is taken as an example. According to the similar simulation theory, corresponding simulation experiments are performed. Thus, the proposed method is validated and its robust performance for optimization of supporting parameters of the bolt is also demonstrated. The method provides a theoretical basis for the determination of bolt support parameters for mining roadway in a fully mechanized mining face.

中文翻译：

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基于正交试验的锚杆支护参数敏感性分析与实验验证

本文采用正交试验方法，为锚杆-岩石耦合系统提出了统一的支撑参数优化程序。围岩表面的收敛性和岩石中的变形被认为是巷道围岩稳定性的目标函数。螺栓的关键支撑参数被视为输入变量。仿真软件FLAC ^3D用来开发耦合螺栓-岩石系统的力学模型，因此可以在软件中获得耦合系统的目标功能。结合方差和多元线性回归分析，得出一种方法来研究支持参数对目标函数的敏感性。然后优化相应的支持参数。以阳泉市某实际矿山的15106工作为例。根据相似的仿真理论，进行了相应的仿真实验。因此，该方法得到了验证，并且还证明了其在优化螺栓支撑参数方面的鲁棒性能。该方法为确定综采工作面巷道锚杆支护参数提供了理论依据。