灰色动态模型在地下工程施工中的应用

Application of Grey Model in Underground Engineering

针对目前地下工程所采用的位移收敛线性回归模式存在的缺点,本文提出在位移测值数量有限的情况下,用灰色理论代替线性回归模式。文中给出了一个按标准条件施工的工程实例,对累计下沉量进行了预测,其结果有较高的精度,并将灰色动态模型的应用范围拓宽到递减模式,最后对误差来源进行了分析。

Considering the existing shortcomings of the linear regression of displacement con-vergence in underground engineering, it is recommended adopting grey theory to replace the currentlinear regression approach in case only limited displacement data are available. Under the assumption ofstandard construction process, the total subsidence is predicted in a practical engineering example withthe grey model. The result is fairly accurate. And, the application range of the grey model is also ex-tended to the monotonely decreasing sequences. Finally, the sources of error are analyzed.