不同工况下淤泥-岩石地层爆破岩层动力响应特征

尹涛1,周传波2,郑长青3,蒋楠2,陈正进4

振动与冲击 ›› 2021, Vol. 40 ›› Issue (11) : 269-276.

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (11) : 269-276.
论文

不同工况下淤泥-岩石地层爆破岩层动力响应特征

  • 尹涛1,周传波2,郑长青3,蒋楠2,陈正进4
作者信息 +

Dynamic response characteristics of blasting strata in silt-rock stratum under different working conditions

  • YIN Tao1, ZHOU Chuanbo2, ZHENG Changqing3, JIANG Nan2, CHEN Zhengjin4
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文章历史 +

摘要

淤泥-岩石地层爆破破碎岩石环境复杂,炮孔中充满地下水且岩石会受到淤泥压力作用。采用现场测试和动力有限元数值模拟相结合的研究方法,对水耦合装药和淤泥压力、水耦合装药和无淤泥压力、空气耦合装药和淤泥压力3种工况下岩层动力响应特征进行了研究。得出水耦合装药和淤泥压力、水耦合装药和无淤泥压力两种工况下,岩层节点振速矢量叠加峰值、单元压力峰值与孔深均存在线性关系;空气耦合装药和淤泥压力工况下,岩层动力响应不受孔深变化的影响;淤泥压力对岩层动力响应影响较小。

Abstract

The environment of blasting broken rock in silt-rock stratum is complex, boreholes are full of groundwater, and rock is subjected to silt pressure.Here, based on the study method of field tests combined with dynamic finite element numerical simulation, dynamic response characteristics of rock stratum under 3 working conditions of water coupling charge plus silt pressure, water coupling charge plus no silt pressure, air coupling charge plus silt pressure were studied.The study results showed that linear relations exist between peak value of rock stratum node’s vibration velocity vectors’ superposition and hole depth and between peak value of element pressure and hole depth, respectively under two working conditions of water coupling charge plus silt pressure and water coupling charge plus no silt pressure; the dynamic response of rock stratum is not affected by variation of hole depth under the working condition of air coupling charge plus silt pressure; the silt pressure has smaller effect on dynamic response of rock stratum.

关键词

水耦合装药 / 淤泥压力 / 淤泥-岩石地层 / 动力响应

Key words

water coupling charge / silt pressure / silt-rock stratum / dynamic response

引用本文

导出引用
尹涛1,周传波2,郑长青3,蒋楠2,陈正进4. 不同工况下淤泥-岩石地层爆破岩层动力响应特征[J]. 振动与冲击, 2021, 40(11): 269-276
YIN Tao1, ZHOU Chuanbo2, ZHENG Changqing3, JIANG Nan2, CHEN Zhengjin4. Dynamic response characteristics of blasting strata in silt-rock stratum under different working conditions[J]. Journal of Vibration and Shock, 2021, 40(11): 269-276

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