Roof Fall Hazard Monitoring and Evaluation—State-of-the-Art Review

Fuławka, Krzysztof; Stolecki, Lech; Szumny, Marcin; Pytel, Witold; Jaśkiewicz-Proć, Izabela; Jakić, Michel; Nöger, Michael; Hartlieb, Philipp

doi:10.3390/en15218312

Cited by 7 publications

(5 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Polish copper mines, the room-and-pillar mining system with roof deflection is commonly utilised. As it was pointed out in Fuławka et al [ 17 ], the dimensions of rooms and pillars are selected according to the local hardness of the rocks. The specific geologic structure, mainly within the roof stratum, favours the occurrence of geomechanical hazards of high intensity.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Prototype of Instrumented Rock Bolt for Continuous Monitoring of Roof Fall Hazard in Deep Underground Mines

Fuławka

Pytel

Szumny

et al. 2022

Sensors

Self Cite

View full text Add to dashboard Cite

Roof falls are currently one of the most dangerous threats associated with underground mining at great depth. Every occurrence of such an event poses a significant risk to the mining crew and disturbs the continuity of the mining process, which clearly affects the economy of the exploitation process. The development of a reliable monitoring system may significantly reduce the impact of eventual roof failure and will have a positive effect on the sustainability of the extraction process. Within this research study, a prototype of an instrumented rock bolt developed for continuous stress measurement is presented. The procedure of a 4-groove multilevel instrumented rock bolt is described and the calibration process is shown. Then, preliminary results of long-term in situ monitoring are presented. Based on the continuous monitoring of stress distribution within immediate roof strata, it was concluded that the developed instrumented rock bolt provides reliable results and is a very useful device, ensuring the possibility of early warning for miners about increasing roof fall risk.

show abstract

Section: Methodsmentioning

confidence: 99%

“…For these purposes, numerous monitoring systems are utilised in underground mines [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Due to the harsh environment (humidity, dust), most monitoring systems are rather mechanical, such as convergence measuring systems and bed separation gauges [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Prototype of Instrumented Rock Bolt for Continuous Monitoring of Roof Fall Hazard in Deep Underground Mines

Fuławka

Pytel

Szumny

et al. 2022

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is of great significance for many geotechnical engineers to be able to accurately identify and locate the fracture location and range in rock [1]. Early warning of failure through some precursory indicators is conducive to monitoring, early warning, and prevention of engineering disasters like rock bursts [2,3], roof falls [4,5], slope slips [6,7], structure reveals [8,9], and even earthquakes [10,11]. In the process of rock fracture, various energy releases will be generated [12], including thermal energy, kinetic energy, friction energy, stress wave energy, etc.…”

Section: Introductionmentioning

confidence: 99%

Waveform Complexity and Positioning Analysis of Acoustic Emission Events during the Compression Failure Process of a Rock Burst Prone Sample

Zhang,

Yu,

et al. 2024

Buildings

View full text Add to dashboard Cite

The localization results of acoustic emission (AE) events can reflect the location and pattern of burst-prone rock failures. However, event localization heavily depends on the quality of the original waveform of the sensor. Therefore, this study analyzed the AE waveform of a rock sample under compression to evaluate its failure localization and quality. From the research results, it could be seen that the initial failure was relatively calm, with clear take-off points, which can be better used for accurate AE event positioning. However, the later failure was severe, causing the take-off points of most sensors to be very unclear, and positioning methods that rely on take-off points cannot be used for positioning, let alone simply using the positioning results of the built-in software. This research result reminds researchers who use AE signals for event localization to first examine the quality and status of the original waveform, providing a basis for obtaining accurate localization results, in order to further accurately study the subsequent failure patterns. The above facts indicate that the initial failure is small and scattered, while the later failure is large and concentrated, with certain fractal characteristics.

show abstract

“…Mining-induced disasters have been extensively studied by researchers using various methods [18][19][20][21]. Field investigation is crucial for studying the coal/rock failure processes in various conditions.…”

Section: Introductionmentioning

confidence: 99%

Applications of Microseismic Monitoring Technique in Coal Mines: A State-of-the-Art Review

Liu,

Wang,

Kou

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

China’s coal mines have to extend to greater depths for the exploitation of more mineral resources, and they have suffered catastrophic mining-induced disasters, such as rockbursts, water inrushes, coal and gas outbursts, and roof fall accidents. The microseismic monitoring technique is a practical tool for mine safety management, which is extensively utilized in many Chinese coal mines. Microcracks of coal/rock masses are recorded as microseismicities in the field, and the potential mining-induced instabilities can be assessed by in-depth analysis of the microseismic parameters. This study provides a state-of-the-art review of the achievements and developments of the microseismic monitoring technique in coal mines. It also presents some prospects for improving the location accuracy of microseismicity, efficient and intelligent processing of the microseismic data, comprehensive assessment of coal/rock instabilities, and development of new microseismic monitoring equipment. This study is valuable for mine safety management and may contribute to improving the deep mining production.

show abstract

Roof Fall Hazard Monitoring and Evaluation—State-of-the-Art Review

Cited by 7 publications

References 66 publications

Prototype of Instrumented Rock Bolt for Continuous Monitoring of Roof Fall Hazard in Deep Underground Mines

Prototype of Instrumented Rock Bolt for Continuous Monitoring of Roof Fall Hazard in Deep Underground Mines

Waveform Complexity and Positioning Analysis of Acoustic Emission Events during the Compression Failure Process of a Rock Burst Prone Sample

Applications of Microseismic Monitoring Technique in Coal Mines: A State-of-the-Art Review

Contact Info

Product

Resources

About