不同埋深灰岩岩爆倾向性及声发射特征试验研究

曾强,黄小荣,王晓军,陈青林,刘健,龚囱

Experimental Study on Rock Burst Tendency and Acoustic Emission Characteristics of Limestone at Different Buried Depths

Qiang ZENG,Xiaorong HUANG,Xiaojun WANG,Qinglin CHEN,Jian LIU,Cong GONG

表1 不同埋深灰岩物理力学基本参数

Table 1 Physical and mechanical parameters of the limestone rock with different buried depths

埋深/m 弹性模量 /GPa 抗压强度 /MPa 卸载应力点 /MPa 密度 /（g·cm-3） 孔隙率 /% 600 16.34 58.88 51.64 2.655 1.148 700 19.97 56.84 50.15 2.726 1.108 800 20.86 77.50 66.34 2.768 1.111 900 21.01 105.55 90.75 2.772 0.940 1 000 22.07 118.93 108.64 2.780 0.919