借助块石胶结充填体单轴抗压声发射试验,分析试验得到的物理力学参数、声发射参数特征曲线间的关系,得到单轴抗压下充填体力学性能和声发射特性。试验结果表明:块石胶结充填体试件在峰值破坏后至完全破坏阶段呈现出塑-弹-塑性特性;试件在AB区段弹性波释放微弱,BC区段声发射振铃计数缓慢增加但无高能事件产生,表明主要发生弹性变形;CD区段出现较多高能量信号,表明此时试件已经接近破坏的峰值;DE区段高能量信号连续出现并且到达峰值,表明试件完全破坏并失去承载能力。
The mechanical properties and AE characteristics of filling body has practical significance to the mine used filling method. It can be obtained through analysising the relationship a- mong the physical parameters and the characteristic curves of the acoustic emission parameters under single axis compression test. Test results show, the block rock cemented filling body specimen was destroyed at the peak value of the complete destruction stage, plastic and elastic plastic properties have emerged. The e- lastic wave in the AB section is weak, the BC segment ring count increased slowly but no energetic events have demonstrated the e lastic deformation occurred, the CD section, there are many high energy signals which indicate that the test piece is close to the peak of damage, DE section energy signal is in a row and reaches the peak value of the test piece, which is completely destroyed and the carrying capacity is lost.