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3 灰岩特征强度及其占比

Table 3 Characteristic strength and percentage of limestone

埋深/m 起裂强度σc2/ MPa 占应力百分比/% 损伤强度σc3/ MPa 占应力百分比/% 600 17.61 29.91 45.30 78.23 700 21.23 33.37 43.17 75.95 800 17.26 31.87 54.15 69.88 900 39.55 37.47 89.97 85.68 1 000 42.61 35.74 95.11 79.83