煤矿安全2025，Vol.56Issue(3)：21-31,11.DOI:10.13347/j.cnki.mkaq.20240856
以电压为变量的高强电爆震致裂岩石过程的冲击波特性研究
Study on shock wave characteristics of rock fracturing process induced by high-intensity electric detonation with voltage as variable
摘要
Abstract
High strength electric detonation is a new type of fracturing technology that can efficiently reconstruct coal and rock lay-ers structure,improve the efficiency of coalbed methane mining,increase the proportion of clean energy,and help achieve the"dual carbon"goal;the shock wave energy characteristics of Changqing rock induced by high intensity electric detonation under 16 kV and 204 μF conditions were studied by changing the voltage.The experimental results show that the increase of voltage leads to a de-crease in the wavefront time of the voltage curve,and the decrease rate decreases with the increase of voltage,which leads to the in-crease of the amplitude of voltage wave pattern and the discharge power of high-strength electric detonation,and the increase of shock wave intensity;the direction of maximum shock wave vibration velocity is horizontally from the inner surface of the rock to the outer surface of the rock,which is the main propagation direction of vibration;the main frequency of the vibration energy of shock wave is 0-10 Hz,and the energy is mainly distributed in the range of 0-1 000 Hz;the increase in voltage increases the peak amplitude of the shock wave spectrum and the peak particle velocity of the vibration curve.The increase of voltage makes the shock wave produce stronger instantaneous force,and accelerates the transformation of rock internal structure to instability.关键词
煤层气开采/煤岩致裂技术/高强电爆震/液电效应/时频分析Key words
coalbed methane extraction/coal rock fracturing technology/high-intensity electric detonation/hydroelectric effect/time-frequency analysis分类
矿业与冶金引用本文复制引用
王廷,聂百胜,张喆浩,张怡兰,李耀谦,柳先锋,刘鹏,包松,王琴杰..以电压为变量的高强电爆震致裂岩石过程的冲击波特性研究[J].煤矿安全,2025,56(3):21-31,11.基金项目
国家自然科学基金资助项目(52274173,52204206) （52274173,52204206）
