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为了对陷落柱突水机理及防治技术研究提供实验技术支撑,开发出陷落柱突水三维大型模拟实验系统.通过力学实验和渗透性实验,配制出具有低强度和低渗透隔水层的相似材料,根据实验对象外形尺寸及受力情况,研制出与三维大型模拟实验配套的水压、围压、轴压控制系统和应力传感器.利用水溶性材料,设计出一种在三维密封条件下模拟巷道掘进及工作面回采的有效方法.结果表明:隔水层相似材料合理骨胶质量比为8∶1,胶结剂质量比为6∶1,水溶性材料合理配比为第3组,压力控制系统可提供压力范围为0.002~2.00MPa.以骆驼山煤矿陷落柱突水过程为模拟对象,验证了实验系统的可靠性.
In order to provide technical support for the research on water inrush mechanism and prevention and control technology of collapse column, a three-dimensional large-scale simulation experiment system for water column inrush has been developed. Through the mechanics and permeability experiments, similar materials with low-strength and low- , According to the size and force conditions of the experimental object, a hydraulic pressure, confining pressure and axial pressure control system and a stress sensor matched with three-dimensional large-scale simulation experiments were developed. Using water-soluble materials, a three- Tunneling and working face recovery.The results show that the reasonable material ratio of the water-permeable layer is 8:1, the mass ratio of cement to binder is 6:1, the proportion of water-soluble material is the third group, and the pressure control system The pressure range is 0.002 ~ 2.00MPa. The water inrush of the Kulu Mountain coal mine is simulated to verify the reliability of the experimental system.