Optimal Transceiver Distance of Controlled-source Audio-frequency Magnetotelluric Sounding Method

Zhou, Lei; Xie, Xuhui; Wang, Xinyu; Liu, Yan

doi:10.32389/jeeg20-028

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Wang [64] conducted experiments in the northern Qinshui Basin and demonstrated that CSAMT could effectively obtain the electrical characteristics of geological structures and identify water-rich zones. Zhou et al [65] derived a formula for determining the optimal transmitter-receiver distance and provided steps for the practical application of CSAMT in the field. However, CSAMT is relatively expensive compared with other electromagnetic methods, and it is not suitable for large-scale surveys.…”

Section: Controllable-source Audio Magnetotelluricsmentioning

confidence: 99%

Methods for the Geophysical Exploration and Sustainable Utilisation of Coalbed Methane Resources in Abandoned Mines of Shanxi, China

Liu,

Li,

2024

Sustainability

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Underground coal mining results in large goafs and numerous abandoned mines that contain substantial amounts of coalbed methane. If this methane is not used and controlled, it will escape into the atmosphere through geological fractures and can result in serious greenhouse gas effects and environmental damage. Exploring and developing the coalbed methane resources of abandoned mines can not only improve coal mine safety and protect the ecological environment but also reuse waste and mitigate energy shortages. Geophysical methods have made some progress in detecting abandoned coal mines, but there are still some challenges and difficulties. The resolution of seismic exploration may not be enough to accurately describe the details of coal seams and CBM rich areas, and the effect of resistivity method in deep CBM exploration is limited. In addition, the geological structure of abandoned coal mines is usually more complex, such as faults, folds, etc., which makes the application of exploration methods more difficult and increases the difficulty of data interpretation. Therefore, it is necessary to develop and perfect exploration technology continuously including the application of geophysical big data, deep learning, and artificial intelligence inversion to realize the accurate detection and evaluation of CBM resources in abandoned coal mines.

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Section: Controllable-source Audio Magnetotelluricsmentioning

confidence: 99%

Methods for the Geophysical Exploration and Sustainable Utilisation of Coalbed Methane Resources in Abandoned Mines of Shanxi, China

Liu,

Li,

2024

Sustainability

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Development of an internet-of-things-based controlled-source ultrasonic audio frequency electromagnetic receiver

Lin,

Zhang,

Zhou

et al. 2024

Geosci. Instrum. Method. Data Syst.

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Abstract. Electromagnetic exploration, characterized by its low cost, wide applicability, and high operational efficiency, finds extensive applications in fields such as oil and gas exploration, mineral prospecting, and engineering geology. Traditional controlled-source electromagnetic detection methods are typically confined to operating frequencies below 250 kHz, resulting in insufficient detection accuracy for applications such as shallow- and intermediate-depth exploration, thereby constraining their performance in high-resolution imaging. To address these challenges, we propose a controlled-source ultrasonic audio frequency electromagnetic receive system based on the internet of things (IoT). We investigate cascaded digital filtering and sampling techniques to extend the receiver's sampling rate range, thereby elevating the operating frequency of controlled-source electromagnetic acquisition from the conventional maximum of 250 kHz to 1 MHz. The receiver achieves a sampling rate of up to 2.5 MHz, comprising three magnetic field measurement channels and two electric field measurement channels. The instrument is compact, lightweight, and capable of real-time data storage locally and real-time data transmission to an upper computer. Additionally, IoT technology is introduced, leading to the design of a cloud-based real-time remote control and data acquisition scheme. Experimental results demonstrate the stability of the instrument, meeting the requirements of field exploration.

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Optimal Transceiver Distance of Controlled-source Audio-frequency Magnetotelluric Sounding Method

Cited by 2 publications

References 10 publications

Methods for the Geophysical Exploration and Sustainable Utilisation of Coalbed Methane Resources in Abandoned Mines of Shanxi, China

Methods for the Geophysical Exploration and Sustainable Utilisation of Coalbed Methane Resources in Abandoned Mines of Shanxi, China

Development of an internet-of-things-based controlled-source ultrasonic audio frequency electromagnetic receiver

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