On the Borehole Electromagnetic Method for Exploration of Coal Mining Goaf

Su, Benyu; Yu, Jiadong; Sheng, Chenxing

doi:10.5755/j01.eie.22.4.15913

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…Due to the form of electromagnetic field, many researchers [11] adopt 3-D FDTD to solve Maxwell equations, the earth model is discretized into Yee unit model, as shown in Fig. 4.…”

Section: Principle Of Mtemmentioning

confidence: 99%

Maxwell-equations Based on Mining Transient Electromagnetic Method for Coal Mine-Disaster water Detection

Su¹,

Yu²,

Sheng³

2017

ElAEE

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Water-bearing geological structure is a serious threat to coalmine safety. This research focuses on detecting water-bearing geological structure by transient electromagnetic method. First, we introduce the principle of mining transient electromagnetic method, and then explain the technique of Finite Different Time Domain using in the transient electromagnetic method. Based on Maxwell equations, we derive the difference equations of electromagnetic field and study the responses of water-bearing geological structure using FDTD. Moreover, we establish the relationship between receiving electromagnetic field and geological information. The typical coal geological model of goaf-water is chosen to do the numerical simulation. Besides, we verify the availability of the method by numerical simulation using coal geological model. Finally, we use the method in the coalmine which is located in Linfen city in Shanxi province in China, and the detecting result is verified by drilling.

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“…Due to the form of electromagnetic field, many researchers [11] adopt 3-D FDTD to solve Maxwell equations, the earth model is discretized into Yee unit model, as shown in Fig. 4.…”

Section: Principle Of Mtemmentioning

confidence: 99%

Maxwell-equations Based on Mining Transient Electromagnetic Method for Coal Mine-Disaster water Detection

Su¹,

Yu²,

Sheng³

2017

ElAEE

Self Cite

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“…Geophysical prospecting methods commonly used in goaf and water accumulation include the shallow seismic method [5,6], transient electromagnetic method [7][8][9], highdensity electrical method [10,11], magnetotelluric method [12,13], and ground-penetrating radar [14,15]. Various geophysical methods have achieved certain effects in detecting goaf and water accumulation, but each geophysical method has its own applicable conditions and advantages.…”

Section: Introductionmentioning

confidence: 99%

Integrated Geophysical Prediction of Goaf and Water Accumulation in Pingshuo Dong Open-Cut Mine with Ultrashallow and High Drops

et al. 2023

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To address safety problems caused by goaf and water accumulation in open-pit mines, the shallow three-dimensional seismic method and transient electromagnetic method were integrated and applied to detect the mining goaf distribution scope and the water accumulation conditions. In view of the special topographic conditions of an ultrashallow layer and high drop in an open-pit mine, we proposed utilizing bin homogenization and multidomain joint denoising to improve the reliability of seismic data. By using seismic-sensitive attributes to predict the goaf, the transient electromagnetic method was employed to further predict the water accumulation in the goaf. The results show that the shallow seismic method could clearly reflect the reflected-wave variation features of the goaf. The features of a junction between a normal seam and goaf vary obviously, and the prediction effect of the goaf boundary with high resolution is in line with the actual situation. Furthermore, taking the goaf scope prediction with the shallow three-dimensional seismic method as a base, targeted transient electromagnetic detection was deployed, with a detailed analysis of the survey-line repeated areas of the shallow seismic and transient electromagnetic methods. Making full use of the advantages of the shallow seismic and transient electromagnetic methods, we propose a reasonable data interpretation method in combination with the special topographic conditions of open-pit mines, which greatly improves the prediction effect of goaf and water accumulation conditions.

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“…Hence, the research on collapse column has been a hot point in the mine hydrogeology. Although researchers [1]- [3] have done a lot of geophysical work, still there is more work needs to be done, e.g., most of the collapse columns develop under the coal seam floor and, in this case, most seismic energy is reflected into by the roof of the Earth . Hence, the ground surface seismic method has a great challenge to detect a collapse column.…”

Section: Introductionmentioning

confidence: 99%

Research on Ground of Penetrating Radar in the Coal Mine Detecting: A Case Study of Application in Huaibei Coal Mine

Ma¹,

Shen²,

Su³

et al. 2019

ELEKTRON ELEKTROTECH

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Although many geophysical techniques have been used to detect the disaster geological anomalous body in the Huaibei coal mine company, there are still many mining disasters happening. The main reason is that the coal seam is rich of water in Huaibei coal areas. If the ground water connects with tunnels, it will cause the flood to collapse the coal seam. However, these dangerous geological bodies usually are very hided from the viewpoint of traditional electromagnetic and seismic methods. Due to the great difference of permittivity between the water-bearing rock and the surrounding rock, the high frequency electromagnetic wave can be received by a Ground Penetrating Radar (GPR) to detect the water-bearing rocks. Hence, we try to employ the high frequency electromagnetic wave to detect the water-bearing rock, which frequently results in a coal mining disaster. Firstly, the numerical simulations based on the theory research and its` effectivity analysis are done. Then, the method is used for the coal mine of Huaibei Company. Finally, the comparison between the detected results and the geological drilling information indicates the detection effectiveness of the GPR (Ground Penetrating Radar) in the coal mine tunnel.

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On the Borehole Electromagnetic Method for Exploration of Coal Mining Goaf

Cited by 11 publications

References 14 publications

Maxwell-equations Based on Mining Transient Electromagnetic Method for Coal Mine-Disaster water Detection

Maxwell-equations Based on Mining Transient Electromagnetic Method for Coal Mine-Disaster water Detection

Integrated Geophysical Prediction of Goaf and Water Accumulation in Pingshuo Dong Open-Cut Mine with Ultrashallow and High Drops

Research on Ground of Penetrating Radar in the Coal Mine Detecting: A Case Study of Application in Huaibei Coal Mine

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