基于PSO-BP神经网络的盾构刀具配置研究

Research on Shield Cutting Tool Configuration Based on PSO-BP Neural Network

盾构刀具在盾构机掘进过程中起着关键的作用,其配置选型是否合理决定着工程的成败。为了对盾构刀具进行合理的配置,根据盾构刀具的配置原则,针对盾构刀具配置的地质适用性,在粒子群优化算法(Particle swarm optimization,PSO)与神经网络算法(Back propagation,BP)的基础上提出智能配置方法。建立地质条件与盾构刀具类型之间的关系模型,并利用成功的盾构施工案例作为样本数据对该模型进行训练,训练后可以利用模型智能推荐盾构刀具配置方案。利用工程案例进行测试分析,将测试结果与实际配置方案进行对比,并与BP神经网络测试结果进行比较。测试结果表明,基于PSO-BP神经网络算法不但能够很好地实现盾构刀具配置方案的合理推荐,并且在计算精度和训练时间两个方面PSO-BP神经网络算法比BP神经网络算法都有显著提高。

Shield cutting tools play a key role in the process of shield machine tunneling, and its reasonable configuration selection affects the success of the project. For the reasonable configuration and the geological applicability of shield cutting tools, an intelligent configuration method based on PSO-BP neural network hybrid algorithm is put forward, where the configuration principle of shield cutting tools is considered. The successful shield construction cases are used as sample data to train the relationship model, which is established between geological conditions and the types of shield cutting tools. And the trained model can achieve intelligent recommendation for the configuration scheme of shield cutting tools. The trained model is tested by engineering case, and the test result is compared with the actual configuration scheme. The test results show that, the PSO-BP neural network algorithm can not only achieve the reasonable recommendation on configuration scheme of shield cutting tools, but also it has significant improvement compared with the BP neural network algorithm in two aspects of calculation accuracy and training time.