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临界质点振速
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  critical vibration velocity
     Through the comparing analyses between the particle vibration velocity and the lamination range of rock mass, the critical vibration velocity of rock particles while rock masses occur lamination cracks in the region have been determined, which is 25.3 cm/s.
     通过质点振速和岩体层裂范围的耦合分析,确定出该试验区段边坡岩体爆破开挖发生层裂时的临界质点振速为25.3cm/s。
短句来源
     In combination with the construction of layered rock cutting at Yuhuai railway, through the coupled analysis of the critical vibration velocity and sonic wave detection of 6 single hole blasting lamination tests, the paper gives the critical vibration velocity as 25.3 cm·s~(-1).
     结合渝怀铁路顺层岩质地段路堑施工,通过对6次单孔爆破层裂试验中振速与声波探测结果的耦合分析,确定出该区岩体的临界质点振速为25 3cm·s-1。
短句来源
  相似匹配句对
     An Algorithm for Passive Direction Estimation to Low Altitude Target Based on Particle Velocity Measurement
     基于质点测量的低空目标定向算法研究
短句来源
     Study on Critical Failure Vibration Velocity of Underground Chambers under Action of Blasting Vibration
     爆破动作用下地下洞室临界的研究
短句来源
     The correlation equations of pressure and velocity are deduced.
     从理论上推导了声压和质点之间的相关方程组。
短句来源
     Comparison and Selection of Two Forecasting Equations on Particle Vibration Velocity
     两种质点预测公式的比较与选择
     MECHANISM OF ROCK SLOPE UNSTABILITY AND CRITICAL VIBRATION VELOCITY UNDER ACTION OF BLASTING SEISM WAVE
     爆破地震波作用下的边坡失稳机理与临界
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In combination with the construction of layered rock cutting at Yuhuai railway, through the coupled analysis of the critical vibration velocity and sonic wave detection of 6 single hole blasting lamination tests, the paper gives the critical vibration velocity as 25.3 cm·s~(-1). Through the regression analysis and calculation (discussion) of the data of seismic waves measured in 8 tests of deep-hole bench (blasting), shallow-hole bench (blasting) and shallow-hole smooth blasting, it is shown that all three blasting...

In combination with the construction of layered rock cutting at Yuhuai railway, through the coupled analysis of the critical vibration velocity and sonic wave detection of 6 single hole blasting lamination tests, the paper gives the critical vibration velocity as 25.3 cm·s~(-1). Through the regression analysis and calculation (discussion) of the data of seismic waves measured in 8 tests of deep-hole bench (blasting), shallow-hole bench (blasting) and shallow-hole smooth blasting, it is shown that all three blasting methods result in lamination effect of different extents. The lamination range of rock masses caused by deep-hole blasting extends to 9.12 m, but that of the shallow-hole blasting only 2.18 m-2.42 m. For the excavation of layered rock cutting, it can be done with a combined method of deep-hole blasting and cushion blasting in the main excavating region while the (combined) method of shallow-hole blasting and smooth blasting is used in the projection layer on the side of (down-layered) slope. That can ensure the lamination range stays within 2.2 m.

结合渝怀铁路顺层岩质地段路堑施工,通过对6次单孔爆破层裂试验中振速与声波探测结果的耦合分析,确定出该区岩体的临界质点振速为25 3cm·s-1。对8次深孔台阶爆破、浅孔台阶爆破和浅孔光面爆破地震波测量结果的回归分析与计算讨论表明,这3种爆破方式都会使边坡岩体产生不同程度的层裂效应,深孔爆破引起的岩体层裂范围达9 12m,而浅孔爆破则仅为2 18m~2 42m。对于顺层岩质地段路堑开挖,可采用主开挖区深孔爆破与缓冲爆破相结合、顺倾一侧边坡预留保护层浅孔爆破与光面爆破相结合的施工方案,能保证开挖爆破产生的层裂范围小于2 2m。

 
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