本文選題：無線電波 + 坑道透視��； 參考：《煤炭學(xué)報》2017年S1期

【摘要】：為了準(zhǔn)確預(yù)測煤層回采工作面瓦斯富集區(qū)情況,基于礦井無線電波透視理論,對瓦斯壓力與無線電波透視曲線變化關(guān)系進(jìn)行了物理試驗(yàn),并根據(jù)井下回采工作面實(shí)際情況進(jìn)行了煤層瓦斯富集區(qū)的無線電波曲線變化特征的正演模擬,探討了無線電波透視探測瓦斯富集區(qū)的曲線特征,并在煤礦井下進(jìn)行試驗(yàn)。研究得出,煤層瓦斯壓力與無線電波透視衰減曲線呈現(xiàn)一致性變化,煤層瓦斯富集區(qū)的存在會造成無線電波坑透的異常區(qū)域,相對于正常煤層接收機(jī)接收值來說,煤層瓦斯富集區(qū)的異常曲線整體呈現(xiàn)接收值偏小,而且中間區(qū)域衰減的更大些,兩邊相對衰減的小些,形成一個"蝙蝠"形狀。經(jīng)過在煤礦井下的實(shí)驗(yàn)驗(yàn)證,無線電波透視成果結(jié)合地質(zhì)資料分析,可以用來較為準(zhǔn)確地劃分煤與瓦斯突出危險區(qū)。
[Abstract]:In order to accurately predict the gas accumulation area in coal mining face, based on the theory of coal mine radio wave perspective, the relationship between gas pressure and radio wave perspective curve is tested. According to the actual situation of underground coal mining face, the forward modeling of radio wave curve change characteristics in coal seam gas accumulation area is carried out, and the curve characteristic of radio wave penetration detection gas accumulation area is discussed, and the experiment is carried out in coal mine. The study shows that the attenuation curve of coal seam gas pressure and radio wave perspective is consistent, and the existence of coal seam gas accumulation area will result in abnormal area of radio wave pit penetration, which is relative to the normal coal seam receiver receiving value. The abnormal curve of coal seam gas rich area presents the receiving value to be small as a whole, and the attenuation of the middle area is bigger, and the relative attenuation of both sides is smaller, forming a "bat" shape. The results of radio wave analysis combined with geological data can be used to divide coal and gas outburst risk areas more accurately.
【作者單位】： 中煤科工集團(tuán)重慶研究院有限公司;
【基金】：國家科技重大專項(xiàng)資助項(xiàng)目(2016ZX05045004-007)
【分類號】：TD712

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