以神经网络为基本工具，利用其强大的非线性映射能力，并结合有限元法动力分析成果，为预测在复合射孔条件下岩层裂缝扩展深度提供了一条新的途径。

By using ANN and its powerful nonlinear mapping ability and combining production of FEM dynamic analysis, a new way to predicting terrane crack depth of complex fire hole is offered.

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综合比较了核机器方法与人工神经网络法的预测效果，同时展示了常规核与复合核的性能对比。

Experiment results show that, kernel machine method is better than artificial neural network, and compound kernel functions is better than common single kernel functions.

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