Results 31 to 40 of about 8,301 (195)

Failure characteristics analysis of the inclined interlayer during water‐soluble cavity construction of underground salt caverns for large‐scale energy storage

Deep Underground Science and Engineering, EarlyView.
In the process of water‐soluble cavern construction of salt cavern energy storage, since the interlayer does not dissolve in water easily, sudden collapse will cause engineering accidents such as bending and damage of the inner tube of the cavern.
Zenghui Zhao, Tianyu Li, Qing Ma, Junlong Shang, Jiaze Du, Ruizhe He   +5 more
wiley   +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

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Combination of multiple cerebral cavernous malformations with a falx meningioma: A clinical case

Кубанский научный медицинский вестник
Introduction. Cerebral cavernous malformations may coexist with various disorders of the central nervous system, including brain tumors. There are few descriptions of combined cavernous malformations and meningiomas in the literature.
L. V. Shagal, A. R. Eremyan, A. I. Berdnik, G. R. Obivalina, G. G. Muzlaev   +4 more
doaj   +1 more source

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source

A cavernous malformation associated with an acute subdural hematoma: case report and literature review

Egyptian Journal of Neurosurgery
Background Acute subdural hematoma secondary to bleeding from a cavernous malformation is uncommon, and few cases are reported in the literature. Case description We describe the case of a 40-year-old woman who had no prior history of significant illness
Dramane Cissé, Daniel Yamba Yamba, Mohammed El Ghabouch, Muhindo Dominique, Oualid Mohammed Hmamouche, Marouane Hammoud, Faycal Lakhdar, Mohammed Benzagmout, Khalid Chakour, Mohammed El Faiz Chaoui   +9 more
doaj   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

[Cavernous malformations].

Der Radiologe, 2008
Cavernomas of the CNS may involve brain parenchyma as well as the spinal cord and belong to those cerebrovascular malformations that have no arteriovenous shunt and thus are generally angiographically occult. Contrary to computed tomography (CT), which is generally suited to reveal calcifications or acute bleeding, magnetic resonance imaging (MRI ...
Ahlhelm, F, Hagen, T, Schulte-Altedorneburg, G, Grunwald, I, Reith, W, Roth, C   +5 more
openaire   +3 more sources

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

Deep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Diagnosis and treatment of cavernous malformations of the spine and spinal cord

Ukrainian Neurosurgical Journal, 2012
Introduction. This study was conducted in order to clarify structural features of cavernous malformations, to develop a technique for their surgical treatment and to analyze treatment outcomes.Methods.
Eugene Slynko, Alexander Zolotoverkh, Vadim Verbov, Ruslan Pishanov   +3 more
doaj   +1 more source