本文選題：高位巖漿巖 + 相似模擬�。� 參考：《中國煤炭》2017年12期

【摘要】：為研究關(guān)鍵層條件下瓦斯運(yùn)移通道發(fā)育特征,以楊柳煤礦104采區(qū)為工程背景,通過相似材料試驗(yàn),模擬了高位巖漿巖條件下離層裂隙發(fā)育規(guī)律。研究表明:隨著工作面的不斷推進(jìn),覆巖裂隙逐漸向上發(fā)育,并止于巖漿巖底部;高位巖漿巖的存在對(duì)離層裂隙發(fā)育起著控制作用,巖漿巖破斷前,其底部形成大面積離層空間,為離層瓦斯的形成提供了條件;硬厚巖漿巖底部離層空間長時(shí)間大量擴(kuò)展,為離層瓦斯積聚提供了孕育空間;巖漿巖發(fā)生破斷后,離層瓦斯受強(qiáng)動(dòng)壓沖擊作用,通過斷裂裂隙突涌至工作面或采空區(qū)內(nèi),造成瓦斯突涌事故。通過離層注漿、抽采離層瓦斯等措施防治硬厚巖層下瓦斯突涌。
[Abstract]:In order to study the development characteristics of gas migration channels in key strata, taking the No. 104 mining area of Yangliu Coal Mine as the engineering background, through the similar material test, the development law of the fissure in the separated layer under the condition of high magmatic rock is simulated. The results show that: with the continuous advance of the working face, the overburden fissures gradually develop upward and stop at the bottom of the magmatic rocks, the existence of the upper magmatic rocks plays a controlling role in the development of the fissures in the separated strata, and before the magmatic rocks break down, A large area of separation space is formed at the bottom of the rock, which provides the condition for the formation of gas in the separation layer; the space of separation layer at the bottom of hard and thick magma is extended for a long time, which provides breeding space for gas accumulation in the separation layer; the magmatic rock is broken, Under the strong dynamic pressure, the gas burst into the face or the goaf through the fracture crack, which caused the gas burst accident. Measures such as grouting and gas extraction are used to prevent gas outburst under hard and thick strata.
【作者單位】： 山東科技大學(xué)礦業(yè)與安全工程學(xué)院;山東科技大學(xué)礦山災(zāi)害預(yù)防控制省部共建國家重點(diǎn)實(shí)驗(yàn)室培育基地;山東科技大學(xué)資源與土木工程系;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51374139) 山東省自然科學(xué)基金項(xiàng)目(ZR2013EEM018)
【分類號(hào)】：TD712
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本文編號(hào)：1944152