Experimental study on the pressure control of soil chamber in shield tunneling  

作　　者：Qiang ZHANG Shou-Ju LI Li-Juan CAO 

机构地区：[1]Institute of Mechanical Engineering, Liaoning Technical University, Fuxin 123000, China [2]State Key Lab. of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian 116024, China [3]China National Coal Mining Equipment Co., Ltd., Beijing 100011, China [4]Institute of Mechanical Engineering, Dalian Ocean University, Dalian 116023, China

出　　处：《Journal of Coal Science & Engineering(China)》2013年第3期414-420,共7页煤炭学报（英文版）

基　　金：Supported by the National Basic Research Project （2007CB714006, 90815023）; the National Natural Science Foundation of China （GZ0818, GZ1107）

摘　　要：A mathematical model of the soil pressure system in shield tunneling was proposed to optimize soil pressure control in the soil chamber, based on the constitutive relationship between strain and stress. The desired pressure is determined by using the finite element method. A linear quadratic constant state tracking problem was considered over an infinite time interval. The optimal control law was derived by differentiating the Hamilton function with respect to system input. In order to verify the effectiveness of the proposed mathematical model and optimal control law, an experimental study on the pressure control of the soil chamber in shield tunneling was conducted in a laboratory. The experiment results show that soil pressure in the soil chamber in shield tunneling can be accurately controlled.

关 键 词：optimal control soil pressure shield tunneling mathematical model experimental investigation 

分 类 号：O413.1[理学—理论物理] TQ522.15[理学—物理]