Detection, Location and Assessment of Underground Fires Using Radon Anomalies on the Day Surface

Portola, V.A.; Tailakov, O.V.; Un, Lee Hee; Sobolev, V.V.; Bobrovnikova, A.A.

doi:10.18796/0041-5790-2021-5-47-52

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…Stretch or fault zones have a subvertical position. Previous studies on the migration of gases from the geological environment have given a special role to methane and other gases of the lithosphere in the transport of radon gas to the surface [27,28,45]. This also confirms our conclusion regarding the coincidence of the forms of radon and methane anomalies.…”

Section: Discussionsupporting

confidence: 90%

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Leshukov,

Larionov,

Nastavko

et al. 2023

Earth

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Overburden rock massifs resulting from open-pit coal mining are very common objects in the world’s mining regions. These locations pose a significant challenge as the global mining industry expands. These dumps are capable of self-burning for quite a long time. The displacement and sliding of these massifs can cause catastrophic consequences. In addition, these objects emit a significant amount of greenhouse gases into the atmosphere. Therefore, it is necessary to manage such objects and implement appropriate measures to limit their impact on the environment. In this work, we studied soil radon volume activity (VAR) and radon flux density (RFD) on the surface of the overburden rock massif of coal-bearing mining rocks and also made visual fixation of disturbances in the body of the massif, which appeared in the process of its movement. We found anomalies of VAR and RFD on the surface of the overburden extending from north to south. These anomalies were extended along the strike of the faults found in the body of the massif. Additionally, the radon anomalies coincided with the anomalies of methane gas emission previously measured for this object. Thus, we determined that the exit of gases from the body of the massif is carried out through fault (weakened) zones in the body of the massif. According to the results of the study, we propose to carry out radon monitoring in order to detect the spontaneous ignition process of the massif or the increase of its mobility. This will also allow us to take appropriate measures to stabilize the massif or to extinguish the dump before or simultaneously with the biological stage of reclamation.

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Section: Discussionsupporting

confidence: 90%

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Leshukov,

Larionov,

Nastavko

et al. 2023

Earth

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“…Традиционным способом обнаружения процессов самовозгорания является газоаналитический, предусматривающий контроль содержания в рудничной атмосфере таких образующихся при окислении угля газов, как оксид углерода, водород, углеводороды [3,14]. Повысить эффективность определения месторождения подземных очагов самовозгорания позволяет применение в качестве индикаторного газа радона [15].…”

Section: аннотацияunclassified

“…На момент замеров уровень подземных вод в горных выработках ликвидированной шахты «Центральная» находился на отметке +228 м. Расстояние от поверхности до уровня воды составляло около 50 м. Уровень воды продолжает подниматься. Так, за месяц подъем воды составил 1 м. Одним из признаков подземных очагов является образование на земной поверхности аномалий газа радона [15]. Повышение температуры горных пород приводит к возникновению конвективных потоков воздуха, выносящих радон, образующийся при распаде радия, содержащегося в горных породах, на земную поверхность.…”

Section: аннотацияunclassified

Application of Temperature and Gas Surveys for Detection and Location of Points of Endogenous Fires at Seam Outcrops of the Abandoned Mine

Portola,

Bobrovnikova,

Kovalev

et al. 2023

Vestn. Kuzbasskogo gos. teh. univ.

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ВведениеЭндогенные пожары являются одной из самых распространенных аварий на угольных предприятиях [1]. В подземных условиях очаги самовозгорания представляют угрозу жизни и здоровью шахтеров из-за распространения выделяющихся токсичных газов по горным выработкам на большие расстояния. Основная доля эндогенных пожаров, зарегистрированных в шахтах, возникает в выработанном пространстве, что значительно затрудняет обнаружение очагов и их тушение. В наиболее опасных случаях процессы самовозгорания угля могут

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Environmental monitoring of endogenous fires based on thermal imaging and 3D mapping from an unmanned aerial vehicle

Prosekov

Rada

Kuznetsov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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To reduce environmental damage from mining, it is important to minimize the number of endogenous fires caused by spontaneous combustion of hydrocarbons. However, the existing technical solutions have significant limitations and require large investments. The purpose of the study is to develop technology and software for 3D thermal 3D mapping of coal warehouses and coal mining enterprises, which makes it possible to quickly detect potential foci of fire, carry out their prevention, and also minimize the time to extinguish the fires that have arisen. In the work, unmanned aerial vehicles were used as carriers of a photo camera and a thermal imaging camera, as well as software developed with the participation of the authors for processing thermal imaging images and video materials. The survey data were subjected to computer processing and loaded into the geographic information system. The resulting 3D thermal model was used to identify hot spots where fires are possible, as well as for forecasting. Testing of the hardware and software complex in a coal mine showed that the thermal 3D model correctly displays the temperature of coal seams at a considerable depth (over 3 meters). This allows you to quickly identify foci of fire and eliminate them. Research prospects are associated with replicating the results and building 3D thermal models for a larger number of coal enterprises.

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Detection, Location and Assessment of Underground Fires Using Radon Anomalies on the Day Surface

Cited by 4 publications

References 4 publications

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

Application of Temperature and Gas Surveys for Detection and Location of Points of Endogenous Fires at Seam Outcrops of the Abandoned Mine

Environmental monitoring of endogenous fires based on thermal imaging and 3D mapping from an unmanned aerial vehicle

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