煤礦采空區(qū)地面綜合物探方法優(yōu)化研究
發(fā)布時(shí)間:2018-06-29 05:02
本文選題:煤礦采空區(qū) + 綜合物探 ; 參考:《煤炭科學(xué)技術(shù)》2017年01期
【摘要】:為實(shí)現(xiàn)對(duì)煤礦采空區(qū)災(zāi)害的精細(xì)探測(cè),基于采空區(qū)類(lèi)型劃分、地面物探方法特點(diǎn)及適用性研究、綜合物探案例分析,進(jìn)行了地面綜合物探方法優(yōu)化。結(jié)果表明:煤礦采空區(qū)地面精細(xì)綜合探測(cè)應(yīng)采用2種或2種以上的物探方法,做到地震類(lèi)方法與電磁類(lèi)方法相配合、同類(lèi)物探方法相補(bǔ)充,測(cè)網(wǎng)密度布置及參數(shù)設(shè)定符合探測(cè)任務(wù)要求;埋深小于50 m的極淺采空區(qū)宜采用探地雷達(dá)法和高密度電阻率法探測(cè);埋深50~150 m的淺層采空區(qū)宜采用淺層地震法、瞬變電磁法或高密度電阻率法探測(cè);埋深150~400 m的中深采空區(qū)宜采用地震法、瞬變電磁法、可控源音頻大地電磁法或音頻大地電磁法探測(cè);埋深大于400 m的深層采空區(qū)宜采用三維地震法、可控源音頻大地電磁法、音頻大地電磁法或瞬變電磁法探測(cè)。
[Abstract]:In order to realize the fine detection of goaf disasters, based on the classification of goaf types, the study of the characteristics and applicability of geophysical prospecting methods and the analysis of geophysical exploration cases, the optimization of geophysical exploration methods is carried out. The results show that two or more kinds of geophysical prospecting methods should be used to detect the ground in goaf of coal mine, so that the seismic and electromagnetic methods can be coordinated and the similar geophysical prospecting methods should be supplemented. The density arrangement and parameter setting of the measuring network meet the requirements of the exploration task, the ground penetrating radar method and the high density resistivity method should be used in the extremely shallow goaf with a buried depth of less than 50 m, and the shallow seismic method should be used in the shallow goaf with a buried depth of 50 ~ 150 m. The seismic method, transient electromagnetic method, controllable source audio magnetotelluric method or audio magnetotelluric method should be used in the middle depth goaf with a depth of 150m or 400m. Three dimensional seismic method, controlled source audio magnetotelluric method, audio magnetotelluric method or transient electromagnetic method should be used in deep goaf with buried depth of more than 400 m.
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