淮北袁店8煤巖漿熱蝕變的微組構(gòu)響應(yīng)
發(fā)布時(shí)間：2018-07-15 18:37
【摘要】：選取袁店8煤層內(nèi)碎裂煤、焦油煤、天然焦和火夾焦為研究對(duì)象,研究其顯微圖像和拉曼光譜特征,揭示不同變質(zhì)程度煤微組構(gòu)特征及其對(duì)巖漿蝕變的響應(yīng)。結(jié)果顯示,碎裂煤以均質(zhì)鏡質(zhì)體為主,微裂隙網(wǎng)脈發(fā)育,ID=3 500~7 300,IG=5 000~12 000;焦油煤由碎裂鏡質(zhì)體和少量煤焦油組構(gòu),ID和IG均介于1 000~3 500;天然焦由碳質(zhì)中間相及其內(nèi)部所包裹的氣泡和焦油液滴組成,ID=430~700,IG=380~650;火夾焦由焦化基質(zhì)及較小氣泡和少量礦物微球組成,ID=920~1 560,IG=640~910。分析顯示,趨近巖體,碳質(zhì)組分由干燥破裂、擠壓破碎向中間相和熔融態(tài)轉(zhuǎn)變;碳質(zhì)組分拉曼光譜IG/ID值逐漸降低。這表明,趨近巖體,煤層遭受破壞和變質(zhì)程度逐漸增強(qiáng),煤分子片層持續(xù)解聚,層間缺陷不斷增加,碳質(zhì)組分的結(jié)構(gòu)有序度逐漸降低。
[Abstract]:The microscopic images and Raman spectra of broken coal, tar coal, natural coke and fire coke in Yuandian 8 coal seam were studied, and the characteristics of micro-fabric of coal with different metamorphic degrees and its response to magmatic alteration were revealed. The results showed that the fragmentation coal was mainly homogeneous vitrinite. Microfissure network vein development: ID3 500 7 300 GG 5 000 12 000; tar coal composed of clastic vitrinite and a small amount of coal tar fabric ID and IG are between 1 000 and 3 500; natural coke consists of bubbles and tar droplets encapsulated in the mesophase of carbonaceous substance. The chemical matrix, small bubbles and a small amount of mineral microspheres make up of ID-920 ~ (1 560) IGT 640 ~ (910). The analysis shows that the carbonaceous component changes from dry rupture to mesophase and melt state, and the IGP ID value of carbon component Raman spectra decreases gradually. This indicates that as the rock mass approaches, the coal seam is destroyed and metamorphosed gradually, the coal molecular lamellar is continuously deaggregated, the interlayer defects increase continuously, and the structural order degree of the carbonaceous component decreases gradually.
【作者單位】： 安徽大學(xué)資源與環(huán)境工程學(xué)院;安徽省煤田地質(zhì)局第三勘探隊(duì);
【基金】：國家自然科學(xué)基金資助項(xiàng)目(41602173,41373108) 安徽大學(xué)博士科研啟動(dòng)經(jīng)費(fèi)聯(lián)合資助項(xiàng)目(J10113190091)
【分類號(hào)】：TD315
本文編號(hào)：2125017
[Abstract]:The microscopic images and Raman spectra of broken coal, tar coal, natural coke and fire coke in Yuandian 8 coal seam were studied, and the characteristics of micro-fabric of coal with different metamorphic degrees and its response to magmatic alteration were revealed. The results showed that the fragmentation coal was mainly homogeneous vitrinite. Microfissure network vein development: ID3 500 7 300 GG 5 000 12 000; tar coal composed of clastic vitrinite and a small amount of coal tar fabric ID and IG are between 1 000 and 3 500; natural coke consists of bubbles and tar droplets encapsulated in the mesophase of carbonaceous substance. The chemical matrix, small bubbles and a small amount of mineral microspheres make up of ID-920 ~ (1 560) IGT 640 ~ (910). The analysis shows that the carbonaceous component changes from dry rupture to mesophase and melt state, and the IGP ID value of carbon component Raman spectra decreases gradually. This indicates that as the rock mass approaches, the coal seam is destroyed and metamorphosed gradually, the coal molecular lamellar is continuously deaggregated, the interlayer defects increase continuously, and the structural order degree of the carbonaceous component decreases gradually.
【作者單位】： 安徽大學(xué)資源與環(huán)境工程學(xué)院;安徽省煤田地質(zhì)局第三勘探隊(duì);
【基金】：國家自然科學(xué)基金資助項(xiàng)目(41602173,41373108) 安徽大學(xué)博士科研啟動(dòng)經(jīng)費(fèi)聯(lián)合資助項(xiàng)目(J10113190091)
【分類號(hào)】：TD315
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