针对高精度陀螺稳定跟踪系统，提出了一种基于小波基函数神经网络的非线性系统的一步超前预测控制算法。

In this paper, a one-step ahead predictive control algorithm based on wavelet neural networks is proposed for the gyro stability tracking system with high accuracy.

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在井下用瑞利波方法探测下部煤层、超前探测煤巷、岩巷前方的构造，取得了满意的效果。

In underground coal mines, Rayleigh wave method was used to detect lower coal seam and structures ahead roadways and produced satisfactory results.

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以吉林省白山市石碑岭隧道掘进中所进行的超前预报为例，介绍了地质雷达和地震反射波法在这一领域里的应用。

This paper gives an example of Shibeiling tunnel in Baishan city, Jilin, and introduces the GPR and seismic method .

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