不同围岩级别和锚固介质下锚杆动测波形特征分析W aveform.PDF

24 1 () V o l. 24 N o. 1 2010 3 Journa l o U n ive rsity o South China( Sc ience and T echno logy) M ar. 20 10 : 167 3- 0062( 20 10) 01- 0098- 04 不同围岩级别和锚固介质下锚杆动测波形特征分析 1, 2 2 2* 1 孙 冰 , 曾 晟, 丁德馨 , 蒋炳炎 ( 1. , 421001; 2. , 42 100 1) : 基于应力波反射法, 通过不同围岩级别和锚固介质 锚杆的瞬态动力响应实 验研究, 对锚杆的加速度响应曲线的波形特征进行分析. 结果表明, 随着龄期的增长, 固端反射信号非常强烈, 而底端反射信号越来越微弱, 甚至很难识别; 围岩和锚杆介 质均匀密实的锚杆其信号相对平缓一些. : 岩土工程; 锚杆; 应力波反射法; 波形特征 : TD 31; TV45 : A Waveform CharacteristicsofBolts inDifferent Surrounding RocksandAnchorageMedia 1, 2 2 1, 2* 2 SUN Bing , ZEN Sheng, DIN De-xin , JIAN Bing-yan ( 1. School O Urban Construction, University o South China, H engyang, H unan 421001, Ch ina; 2. School o Nuclear Resources and Nuclear Fue l Engineering, University o South China, H engyang, H unan 421001, China) Abstract: Based on the stress w ave re lect ion m ethod, an expermi ent w as conducted to study the transient dynam ic response o bo lts in d i erent surrounding rocks and anchorage m ed ia and analyze the w ave orm characteristic o acceleration response curves or bo lts. T he results show tha t the re lect ion signal o ixed end is very strong and the re lection sig- nal o bottom is increasing ly w eak w ith curing, and that the signal o bolt in un i orm sur- rounding rock and anchorage m edium is gentler. Key words: geotechn ica l eng ineering; bo lt; stress w ave re lection m ethod; w ave orm char- acteristics , , , , , . H. F. T hurner