Results 41 to 50 of about 1,551 (198)

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Research on the intelligent capability maturity and evolution logic of open-pit coal mines

Gong-kuang zidonghua
Existing studies on the construction of intelligent open-pit coal mines have primarily focused on areas such as overall planning, basic architecture, and the evaluation of the completeness of construction content. However, there has been limited research
WANG Zhongxin, TIAN Fengliang, SUN Xin, GUO Xiaosong, HUANG Junting, WANG Lei, ZHANG Zhongwen, ZHAO Guangzhi, SONG Bo, ZENG Xiangyu   +9 more
doaj   +1 more source

Design methods for open pit coal mine footwalls

, 1986
Special design methods are required for footwalls due to the inability to detect problem geometries (rolls, cross faults, pinchout) prior to mining. Application of new analytical methods to different failure modes is discussed together with aspects of monitoring, geometry detection and mitigation.
D S Cavers, G H Baldwin, T Hannah, R K Singhal   +3 more
openaire   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Evolution law of crack propagation in sandstone with holes and fractures under loading

Journal of Safety and Sustainability
To reveal the evolution law of crack propagation in sandstone under the coupling effect of holes and fractures under loading, uniaxial compression tests were carried out on red sandstone specimens prefabricated with different hole diameters (0–20 mm) and
Xuelong Li, Kai Yang, Shumin Liu, Fan Feng   +3 more
doaj   +1 more source

Pollutant emission from fires at open-pit coal mines

IOP Conference Series: Earth and Environmental Science, 2021
Abstract Existing coal mining technologies are associated with significant pollution of the natural environment, especially atmospheric air. On top of this, in the event of an emergency related to the spontaneous combustion of coal, this negative impact significantly increases.
M A Murzin, N V Gorlenko
openaire   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Management plan of geological hazard threats in the fault zone of adjacent open-pit mines

Meitan kexue jishu
In the development of large-scale open-pit coal fields in China, there are often several Coal companies entering the same coal field, and each Coal company is a main body of development, mining coal resources in the state-allocated strip area, and ...
Guangwei LIU, Junxiong TU, Xianshuai MA, Yong YAO, Liang WANG, Meiling ZHAO   +5 more
doaj   +1 more source