大型深部矿井建设模型试验系统研制

 研制一套大型深部矿井建设模型试验系统，该系统主要由反力架、液压加载系统、测控系统、数据采集系统等组成。反力架采用回字形主框架、可移动式门式反力架和后支撑架，可实现模型厚度的调整，既可进行平面模型试验又可进行三维模型试验。液压加载系统包括垂直(上、下)作动器、水平(左、右)作动器、后作动器，可实现5个方向的主动加载，同时设有恒定荷载保持系统。测控系统通过由计算机–EDC220全数字控制器–传感元件–执行元件组成的全数字闭环控制系统，可实现对载荷的精确实时控制。数据采集系统包括静态和超动态应变采集仪，可进行巷道机械开挖和爆破开挖模拟试验过程中信息的采集。通过采用石膏砌块的模型试验，可有效模拟深部巷道的变形和破坏现象。

DEVELOPMENT OF A MODEL TEST SYSTEM FOR DEEP MINE CONSTRUCTION

A large model test system for deep mine construction was developed at China University of Mining and Technology(Beijing)，which is mainly composed of supporting frames，a system of hydraulic loading，a system of measurement and control and a system of data acquisition. The supporting frames have a main frame，a movable door shaped supporting frame at front and a support frame at rear. The thickness of models can be adjusted for 2D model test and 3D model test. The hydraulic loading system including vertical actuators(up and down)，horizontal actuators(right and left) and rear actuators，achieves loading in five directions. A constant load maintaining system is set on the equipment. The measurement and control system can accurately control the loading in real-time with a closed loop digital control system composed of a PC，a EDC220 digital controller，sensing elements and executing components. The system of data acquisition including the static and dynamic strain gauges collects the information during the simulation test on roadway construction by mechanical or blasting methods. A model test was carried out with the model test system to simulate the failure and fracture phenomena of the roadway made of gypsum block material.