充填材料对节理岩石动力学性能影响的模拟试验

杨仁树 1,王茂源1, 杨阳 1, 王建国 2

振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 125-131.

PDF(2148 KB)
PDF(2148 KB)
振动与冲击 ›› 2016, Vol. 35 ›› Issue (12) : 125-131.
论文

充填材料对节理岩石动力学性能影响的模拟试验

  • 杨仁树 1,王茂源1, 杨阳 1, 王建国 2
作者信息 +

Simulation material experiment on dynamic mechanical properties of jointed rock affected by joint filling material

  •    Yang Ren-shu 1,WANG Mao-yuan1, Yang Yang 1, Wang Jian-guo 2 
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文章历史 +

摘要

采用相似材料模拟制作与真实节理岩石性质相同的节理模型试件,通过在大直径(50mm)分离式霍普金森压杆(SHPB)装置上对人工制作的节理岩石试件进行冲击试验,探究节理充填材料对岩石动态力学性能的影响。试验结果表明:随着充填材料强度的降低,节理试件动态弹性模量降低,动态抗压强度呈指数形式衰减,软材料充填的试件呈现塑性破坏,试件整体破坏形态与充填材料性质相关;能量分析方面,反射能量比随充填材料强度降低呈增大趋势,透射能量比降低,耗散能量比与充填材料性质相关,由能量表征的损伤变量与冲击速度呈弱幂函数关系,满足 ,试件破坏时的损伤d值为0.458。

Abstract

Joint model specimens were made with similar material, which have the same properties with the real joint rock, then the impact experiment was carried out on the artificial jointed rock specimens with the help of SHPB test apparatus(50mm), rock dynamic mechanics properties which are affected with the joint filling material were acquired. It is found that with the strength of the filling material reduced, joint specimen quantitative dynamic elastic modulus decrease, the dynamic compressive strength attenuate with an index form, specimens filled with soft material showed plastic deformation and failure, the overall failure pattern of specimens associated with filling material properties; Reflection energy ratio has a increase trend with the strength of specimens decreased, transmission energy ratio would reduce, the energy dissipation ratio is associated with filling material properties. Damage variable and the impact velocity meet the function of , damage value d is 0.458 when the test specimens failure.
 

关键词

节理岩石 / 模拟试验 / 冲击荷载 / 霍普金森压杆 / 动态响应 / 能量分析

Key words

joint rock / simulation experiment / impact loading / SHPB / dynamic response / energy analysis

引用本文

导出引用
杨仁树 1,王茂源1, 杨阳 1, 王建国 2. 充填材料对节理岩石动力学性能影响的模拟试验[J]. 振动与冲击, 2016, 35(12): 125-131
Yang Ren-shu 1,WANG Mao-yuan1, Yang Yang 1, Wang Jian-guo 2 . Simulation material experiment on dynamic mechanical properties of jointed rock affected by joint filling material[J]. Journal of Vibration and Shock, 2016, 35(12): 125-131

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