Results 71 to 80 of about 7,244 (206)
Mechanism of water inrush in tunnel construction in karst area
With the rapid developing trend of long, large and deep construction characteristics for underground engineering in the world, China has the largest number of karst tunnels with the wide scales and great difficulties.
Liping Li +4 more
doaj +1 more source
Water inrush poses a serious threat to the safety and sustainability of coal mining operations, particularly in arid–semiarid regions where confined aquifers overlie coal seams. Therefore, an accurate assessment of roof water inrush risk is essential to prevent water hazards on the roof.
Sen Xue +7 more
wiley +1 more source
This study is aimed at identifying the ultradeep gas reservoir structure and gas‐rich areas in the middle section of the southern margin of the Junggar Basin. Based on high‐precision microgravity data collected from the complex terrain areas of Huxi and Tudong in the middle section of the southern margin of the Junggar Basin, residual gravity anomalies
Zhihua Song +8 more
wiley +1 more source
To overcome the porosity‐conductivity trade‐off in conductive porous membranes, a conductive nanofibrous membrane bridged by self‐assembled PPy nanowires is constructed, integrating multiscale porosity with continuous electron pathways. This material‐structure‐function strategy achieves low‐resistance and high‐efficiency filtration combined with ...
Xiaoxue Yao +10 more
wiley +1 more source
Application of Water-Plugging Grouting Material in Water-Rich Fracture Zone of Deep-Buried Tunnel
Considering the water inrush disaster occurred in a deep-buried drill-and-blast tunnel passing through the water-rich fracture zone,this paper analyzes the characteristics of the water inrush disaster and the special requirements for the performance of ...
LI Xiaobing
doaj
Multi‐Scale Evolution Mechanism of Water‐Conducting Fracture Zone in Deep‐Mining Hard Roof
ABSTRACT This study addresses the significant discrepancies in traditional methods for predicting the height of water‐conducting fracture zones in deep‐mining hard roofs, which can lead to catastrophic water inrush events. The 110,504 working face of Banji Coal Mine was chosen as the research site to systematically investigate the development ...
Yingfu Li +4 more
wiley +1 more source
Evaluation of the EMC environment generated by a static var compensator [PDF]
Describes an evaluation of the EMC environment generated by a static var ...
Li, Q., Siew, W.H., Wang, W., Zhang, L.
core
Visible camera cryostat design and performance for the SuMIRe Prime Focus Spectrograph (PFS)
We describe the design and performance of the SuMIRe Prime Focus Spectrograph (PFS) visible camera cryostats. SuMIRe PFS is a massively multi-plexed ground-based spectrograph consisting of four identical spectrograph modules, each receiving roughly 600 ...
Barkhouser, Robert +15 more
core +1 more source
ABSTRACT In China, as the mining depth of coal mines increases, the occurrence conditions of coal seams are becoming increasingly complex, leading to a continuous rise in the risk of rock‐burst. The frequent occurrence of such accidents has caused severe losses to the safe production of coal mines.
Shuheng Zhong, Qi Wang, Haoliang Yin
wiley +1 more source
With the ongoing advancement of infrastructure projects, such as highways and railways, in China, karst tunnel construction is increasingly evolving towards longer, larger, and deeper dimensions. The problem of water and mud inrush in tunnels is becoming
Baode GUO +5 more
doaj +1 more source

