模矢法在厚松散层地表移动参数解算中的应用

Application of Pattern Search Method in Deterning Surface Movement Parameters of Thick Loose Bed

获得准确的预计参数是提高地表沉陷预测精度的关键。模矢法是求解非线性规划中无约束最优化问题的一种直接方法,模矢法求参具有方便计算机编程和加速向最优点移动性质的优点。为此,利用VB6.0平台,编写了基于概率积分法的模矢法求参程序。以朱集煤矿1111(1)工作面为例,利用求参数据,采用概率积分法修正模型计算地表下沉值,并通过与地表观测站的实测值进行比较,验证了模矢法求参的准确性。

Obtaining accurate estimated parameters is the key to improve the surface subsidence prediction accuracy.The pattern search method,which is a direct method to solve the problem of unconstrained optimization in the nonlinear programming,has the advantages for ease of programming and accelerating movement to the optimum point. For this reason,the parameters of the pattern search method based on the integral method has been programmed with the VB6. 0 platform. Taking example for Zhuji coal mine 1111( 1) working face,by using the data of deterning parameters,the values of surface subsidence was calculated by using the imtegral method correction model. Being compared with the measured values of the surface observation station,the results have verified the correctness of the pattern search method to calculate the parameters.