·1400· 工程科学学报，第37卷，第11期 测线长度/m 调线长度m 测线长度m (b) 4 0 34567 e0 2 456 200 200 200 0 0 国岩较陵碎，裂膜 水发行较丰富区城 400 4 测线长度m 线长度m 线度m 5 3456789 20 图2石英砂岩围岩雷达探测Wiggle图.(a,d)V级石英砂岩围岩：(b,e)W级石英砂岩围岩：(c,)Ⅲ级石英砂岩围岩 Fig.2 Wiggle images of quartz sandstone surrounding rock by GPR detection:(a,d)Class V quartz sandstone surrounding rock:(b,e)Class IV quartz sandstone surrounding rock:(c,f)Class II quartz sandstone surrounding rock 1.0 1.0 1.0 0.8 0.8[(b) 0.8 0.6 0.6 0.6 0.4 04 0.4 02 0.2 0.2 0 0 100 200 0 100 200 100 200 频率MHz 频率MHz 频率MHz 1.0 1.0 d e 10 ) 0.8 0.8 0.8 a.6 0.6 0.4 0.4 02 0.2 0.2 0 0 100 200 100 200 100 200 频率/MHz 领率MHz 领率MHz 图3石英砂岩围岩雷达探测频谱图(10~110MHz).(a,d)V级石英砂岩围岩：(b,e)W级石英砂岩围岩：(c,f)Ⅲ级石英砂岩围岩 Fig.3 Frequency spectrograms of quartz sandstone surrounding rock by GPR detection (10~110 MHz):(a,d)Class V quartz sandstone surround- ing rock:(b,e)Class IV quartz sandsto surrounding rock:(c,f)Class IlI quartz sandstone工程科学学报，第 37 卷，第 11 期 图 2 石英砂岩围岩雷达探测 Wiggle 图． ( a，d) Ⅴ级石英砂岩围岩; ( b，e) Ⅳ级石英砂岩围岩; ( c，f) Ⅲ级石英砂岩围岩 Fig． 2 Wiggle images of quartz sandstone surrounding rock by GPＲ detection: ( a，d) Class Ⅴ quartz sandstone surrounding rock; ( b，e) Class Ⅳ quartz sandstone surrounding rock; ( c，f) Class Ⅲ quartz sandstone surrounding rock 图 3 石英砂岩围岩雷达探测频谱图( 10 ～ 110 MHz) ． ( a，d) Ⅴ级石英砂岩围岩; ( b，e) Ⅳ级石英砂岩围岩; ( c，f) Ⅲ级石英砂岩围岩 Fig． 3 Frequency spectrograms of quartz sandstone surrounding rock by GPＲ detection ( 10 ～ 110 MHz) : ( a，d) Class Ⅴ quartz sandstone surround￾ing rock; ( b，e) Class Ⅳ quartz sandstone surrounding rock; ( c，f) Class Ⅲ quartz sandstone surrounding rock · 0041 ·