瞬變電磁法在敏東二礦水文地質(zhì)勘察中的應(yīng)用研究
本文選題:瞬變電磁法 + 水文物探 ; 參考:《河北工程大學(xué)》2015年碩士論文
【摘要】:水害一直是困擾大水礦井的主要問題,故建井前期在水文地質(zhì)勘察工作中查明區(qū)域內(nèi)主要含水層富水性、含水層間的水力聯(lián)系及構(gòu)造的導(dǎo)水性是煤田水文地質(zhì)研究的重要課題。瞬變電磁法具有成本低、效率高、對(duì)低阻敏感、體積效應(yīng)小等優(yōu)勢(shì),,近年來被廣泛應(yīng)用于水文地質(zhì)和工程勘察領(lǐng)域。 傳統(tǒng)的水文地質(zhì)勘察工作主要采用鉆探與抽水試驗(yàn)相結(jié)合的方式,該方法成本高,施工周期長(zhǎng)。本文以敏東二礦水文勘探工作為依托,充分利用瞬變電磁法的優(yōu)勢(shì),將其運(yùn)用到水文地質(zhì)勘查中,指導(dǎo)鉆孔布置;并與抽水試驗(yàn)相結(jié)合,在抽水前后分別進(jìn)行探測(cè),將所得數(shù)據(jù)用時(shí)移性反演手段進(jìn)行處理,以期得到含水層間的水力聯(lián)系;在含水層富水性分析過程中,將探測(cè)數(shù)據(jù)用方差屬性分析的方法處理;最后通過瞬變電磁勘探成果與抽水試驗(yàn)成果的比較,來共同說明測(cè)區(qū)的含水層范圍以及富水性強(qiáng)弱的問題。 分析結(jié)果表明:充分利用瞬變電磁與抽水試驗(yàn)各自的優(yōu)勢(shì),全方位、多角度進(jìn)行推斷、分析、評(píng)價(jià),得到了更加準(zhǔn)確直觀的水文地質(zhì)資料;探測(cè)數(shù)據(jù)的時(shí)移性反演能夠一定程度上說明地下水的水力聯(lián)系;綜合對(duì)比利用物探與抽水試驗(yàn)的結(jié)果,更加直觀準(zhǔn)確的說明了含水層范圍、富水性強(qiáng)弱以及含水層水力聯(lián)系等問題,為煤礦的下一步工作提供了有利的技術(shù)支撐。
[Abstract]:Water damage has been the main problem that plagued the big water mine, so it is important to find out the water rich in the main aquifers in the area of hydrogeological survey, the hydraulic connection between the aquifers and the water conductivity of the structure in the early period of the construction of the well. The transient electromagnetic method has the advantages of low cost, high efficiency, low resistance and small volume effect. These advantages have been widely used in hydrogeology and engineering investigation in recent years.
The traditional hydrogeological prospecting work mainly adopts the way of combination of drilling and pumping test. This method has high cost and long construction period. Based on the hydrological exploration work of Min Dong two mine, this paper makes full use of the advantages of transient electromagnetic method and applies it to the hydrogeological exploration to guide the drilling layout, and combined with the pumping test. When the water is detected before and after the water, the data is processed with time shift inversion, so as to get the hydraulic connection between the aquifers. In the process of water rich analysis of the aquifer, the detection data are processed by the method of variance attribute analysis. Finally, the comparison of the transient electromagnetic exploration results and the pumping test results is used to illustrate the measurement. The area of aquifer and the problem of water rich and weak.
The analysis results show that the hydrogeological data can be obtained more accurately and intuitively, and the time-lapse inversion of the detection data can explain the water force connection of the groundwater to a certain extent, and the comprehensive comparison of geophysical and pumping tests is made by the advantages of the transient electromagnetic and pumping tests. The results show that the range of aquifers, the strength of water rich and the hydraulic connection of aquifers are more intuitively and accurately, which provide favorable technical support for the next work of the coal mine.
【學(xué)位授予單位】:河北工程大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:P631.325
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