Application of Comprehensive Geophysical Prospecting Method in the Exploration of Coal Mined‐Out Areas

X, Luo; Gong, Shuang; Huo, Zhonggang; Li, Hongyan; Ding, Xinpin

doi:10.1155/2019/2368402

Cited by 15 publications

(4 citation statements)

References 41 publications

(31 reference statements)

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“…Currently, the detection methods of unfavorable geological bodies in rock masses, including the DC method detection, seismic method detection, ground penetration radar (GPR) detection, electromagnetic method detection [10,11], as well as joint multi-method detection that integrates these methods [12,13], are becoming increasingly mature and abundant. Among them, the DC method includes laying electrodes using the direct current power supply and studying the change in an electric field to detect unfavorable geological bodies.…”

Section: Introductionmentioning

confidence: 99%

“…The trend of the induced electric potential over time was directly measured using OCTEM, and the OCTEM decay curves of each detection line were plotted in double logarithmic coordinates, as shown in Figure 3. Among them, the "jitter jump" phenomenon of the decay curve appears at approximately 900 ms in line 1, which comes from the interference of the equipment at the working site [13]. In addition to the "jitter jump" phenomenon of line 1, the decay curve of each line tends to be smooth, indicating that the noise is weak and meets the detection requirements [27].…”

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confidence: 99%

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Research on Detection and Safety Analysis of Unfavorable Geological Bodies Based on OCTEM-PHA

Zhu

Wen

et al. 2023

Remote Sensing

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The caving method and mining disturbance may cause geological issues. The advance prediction of unfavorable geological bodies should be conducted to ensure product safety in the underground mine. In this study, we proposed the OCTEM-PHA analysis process and analyzed the Tongkeng Mine in Guangxi. Further, we conducted opposing-coil transient electromagnetic method (OCTEM) detection on four detection lines in T5-1 stope at mine level 386 by using portable geological remote sensing equipment and created inversion maps. Plot profiles and coupling were analyzed with inversion maps to explore the five types of risk factors presented in the mine. The preliminary hazard analysis (PHA) method was used for five types of risk factors to predict the accident consequence and develop safety countermeasures. The results indicate the following: (1) the OCTEM-PHA safety analysis process for unfavorable geological bodies is realistic and feasible. (2) OCTEM shows an excellent response to both high- and low-resistance anomalies in practical engineering applications. The coupling analysis of profiles and inversion maps helps visually analyze the area of apparent resistivity anomalies. (3) The studied mine did not show overhanging formed by the overlying rock layer and large loose void areas. However, the crumbling mining area should be further optimized for balanced mining, the treatment of groundwater and surface water should be improved, and the comparative analysis with the follow-up detection results should be increased.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Research on Detection and Safety Analysis of Unfavorable Geological Bodies Based on OCTEM-PHA

Zhu

Wen

et al. 2023

Remote Sensing

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“…Installed with a wide range of sensors available on the market, drones can identify areas of interest for prospecting by direct methods. In this respect, the low cost of the sensors should also be highlighted, as well as the progress made in the processing software [8].…”

Section: Introductionmentioning

confidence: 99%

Mining Exploration with UAV, Low-Cost Thermal Cameras and GIS Tools—Application to the Specific Case of the Complex Sulfides Hosted in Carbonates of Udías (Cantabria, Spain)

et al. 2022

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The depletion of natural resources implies the need for a constant search for new reserves to satisfy demand. In the mining sector, Unmanned Aerial Vehicles (UAVs) have revolutionised geo-information capture and modelling to allow the use of low-cost sensors for prospecting and exploration for potentially exploitable resources. A very powerful alternative for managing the huge volume of data is the Geographic Information System (GIS), which allows storage, visualisation, analysis, processing and map creation. The research in this paper validates a new quasi-automatic identification of mining resources using GIS thermal-image analysis obtained from UAVs and low-cost sensors. It was tested in a case that differentiated limestone from dolostone with varying iron content, and different thermal behaviour from solar radiation, thereby ensuring that the thermal image recorded these differences. The objective is to discriminate differences in an image in a quasi-automatic way using GIS tools and ultimately to determine outcrops that could contain mineralisation. The comparison between the proposed method with traditional precision alternatives offered differences of only 4.57%, a very small deviation at this early stage of exploration. Hence, it can be considered very suitable.

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“…So by knowing the resistance value of the type of rock layers, we can study the types of rock material, subsurface, and distribution of groundwater in the area. Geoelectric surveys of mapping and sound resistivity methods resulted in information of variations in resistivity rates both laterally and vertically (Luo et al, 2019). At the present time, the resistivity method has become an important and useful tool in hydrogeological studies, mining and mineral mining (Aizebeokhai, 2010).…”

Section: Introductionmentioning

confidence: 99%

Identification Of Unconfined Aquifer Using 3D Resistivity Analysis At Simpang 5 Area, Semarang, Central Java, Indonesia

Supriyadi¹,

Fianti²,

R³

et al. 2020

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Water is a unique property of the Earth and very important to every living organism. The existence of groundwater is only 0.61% of the total water on earth (oceans, rivers, lakes, polar ice, rain). The purpose of this research is to determine the location and depth of the aquifer by using 2D and 3D modeling. The method of research is resistivity method using Schlumberger configuration, where data is collected according to the survey design with coordinate ranging from X:436100, Y:9226880 to X:436680, Y:9227640, and covered by 7 lines. The modeling results indicate that the present groundwater aquifer potential has low resistivity distribution in this area. The spreading of unconfined aquifer is estimated on the north side to the east of Simpang 5 area. This can be seen from syncing the data of line one to six. But the data on line seven is of different patterns with other lines. The existence of groundwater basin is not easily identified on this line. This may be due to the location of Line Seven being located in the area of Ciputra Mall, Horison Hotel and Tlogorejo Hospital with higher consumption of water, thus the decrease in groundwater condition. This may cause conditions such as land subsidence. The results of interpretation based on the modeling show the possibility of an unconfined aquifer with groundwater level at 10-15 m depth with varied end of border groundwater depth.

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Application of Comprehensive Geophysical Prospecting Method in the Exploration of Coal Mined‐Out Areas

Cited by 15 publications

References 41 publications

Research on Detection and Safety Analysis of Unfavorable Geological Bodies Based on OCTEM-PHA

Research on Detection and Safety Analysis of Unfavorable Geological Bodies Based on OCTEM-PHA

Mining Exploration with UAV, Low-Cost Thermal Cameras and GIS Tools—Application to the Specific Case of the Complex Sulfides Hosted in Carbonates of Udías (Cantabria, Spain)

Identification Of Unconfined Aquifer Using 3D Resistivity Analysis At Simpang 5 Area, Semarang, Central Java, Indonesia

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