Results 211 to 220 of about 112,572 (287)

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source

Influence of the Coal Spontaneous Combustion Process on the Hazardous Area of Gas Explosion in the Goaf under High-Level Borehole Gas Extraction. [PDF]

ACS Omega
Zheng Y, Shi Y, Xue S, Ren B.
europepmc   +1 more source

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 evolution mechanisms and prevention countermeasures behind a large-scale landslide in complicated-geological-structure red beds. [PDF]

Sci Rep
He H, Zheng D, Xu G, Dong X, Liu W, Zou Y, Wang H.   +6 more
europepmc   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

Deep Underground Science and Engineering, EarlyView.
This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

The Impact of Virtual Reality Simulation Training on Earthquake Preparedness Knowledge and Practices Among Rural Volunteers in Indonesia: Quasi-Experimental Repeated-Measures Study.

J Med Internet Res
Calisanie NNP, Sansuwito TB, Dioso RI, Lindayani L.   +3 more
europepmc   +1 more source

Cultivating Disaster Preparedness: Scoping Review of Technology's Contribution to Situational Awareness and Disaster Mindset in Disaster Medicine. [PDF]

Online J Public Health Inform
Khorram-Manesh A, Johannessen MR, Nielsen LR, Carlström E, Berntzen L, Sandberg L, Sørensen JL.   +6 more
europepmc   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Effect of Tabletop Exercises on Nurses' Chemical, Biological, Radiological, and Nuclear Preparedness: A Quasi-Experimental Study. [PDF]

J Med Educ Curric Dev
Nazari P, Parsai-Manesh E, Dejbakht M, Nazari P, Esmaeli M, Soleimani B, Yarmohammadinezhad E, Kazemi Z.   +7 more
europepmc   +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