摘要
贵安新区清杨路段一高陡岩质边坡在施工期间受周围路面爆破震动影响较大,为揭示爆破地震波对边坡岩体的影响及其在边坡岩体中的传播规律,在边坡马道岩体内部安装IMS加速度计传感器及岩体表面布置TC4850爆破测振仪,通过两种传感器接收相同爆源的波形,分析了爆破地震波在传播过程中的特征,得到了坡表爆破振动衰减规律与边坡内部岩体振动加速度衰减规律。结果表明爆破地震波在岩体内部加速度与坡表的振动速度相比,具有振动小、衰减较快的特点,且爆破波形持续时间较短、首次显现波峰后呈单调持续衰减。
A high and steep rock slope is greatly influenced by blasting vibration around the pavement during construction at Qingyang Road in Guian New Area. IMS accelerometer sensors are installed inside the inner rock body and TC4850 sensor are provided in rock mass of the slope to reveal the influence of blas- ting seismic wave on the slope rock mass and its attenuation law in slope rock mass. The propagation characteristics of blasting seismic wave are analyzed through the same explosive source seis- mic received by two kinds of sensor and the blasting vibration at- tenuation law on the slope surface and vibration acceleration at- tenuation law inside the rock body are obtained respectively. The results show that the vibration acceleration of blasting seismic wave within the rock mass has the characteristics of small vibra- tion and rapid attenuation compared with the vibration velocity on the slope surface and the duration of acceleration seismic wave is shorter and the monotone continuous attenuation develops after the appearance of peak for the first time.
出处
《化工矿物与加工》
CAS
北大核心
2015年第5期45-48,53,共5页
Industrial Minerals & Processing
基金
国家科技支撑计划(No.2012BAB08B06)
贵州省自然科学研究重点项目(黔教科2010003)
贵州省优秀科技教育人才省长资金项目(黔省专合字(2011)36号)
贵州省高层次人才科研条件特助经费项目(TZJF-2010年-044号)
贵州大学矿业学院研究生创新基金(研理工2014071)支助
关键词
边坡
爆破地震波
振动速度
振动加速度
衰减规律
slope, blasting seismic wave, vibration velocity,vibration acceleration, attenuation law
