突水過(guò)程煤巖表面電位變化規(guī)律研究
[Abstract]:The surface potential of coal and rock during water inrush was measured by the simulation test system of coal and rock surface potential of water inrush, and the law of change of surface potential of coal and rock during water inrush was studied. It is concluded that the surface potential of coal and rock mass has significant spatiotemporal response to the evolution of water inrush and can reflect the internal fracture and fracture propagation of coal and rock mass. The evolution process of water inrush can be divided into three stages: inoculation period, crack spreading stage and large-scale water inrush stage, the surface potential signal is relatively stable during incubation period, and the potential signal fluctuates up and down during the crack spreading period and large-scale water inrush period. The level of surface potential signal at different positions is generally different, and the signal level of the same position is positively correlated with pore water pressure and the fracture strength of coal and rock mass.
【作者單位】: 中國(guó)礦業(yè)大學(xué)安全工程學(xué)院;中國(guó)礦業(yè)大學(xué)煤礦瓦斯與火災(zāi)防治教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)煤炭資源與安全開(kāi)采國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(51104156) 教育部科學(xué)技術(shù)研究資助項(xiàng)目(113031A) 煤炭資源與安全開(kāi)采國(guó)家重點(diǎn)實(shí)驗(yàn)室大學(xué)生科技創(chuàng)新計(jì)劃資助項(xiàng)目(SKLMD2015005)
【分類號(hào)】:TD745
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