Results 101 to 110 of about 3,180,102 (308)

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

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

Reevaluating historical tsunami hazards from the Makran subduction zone and local seismic sources along the Western Indian margin through numerical modelling

Geoscience Letters
The western coast of India is highly vulnerable to tsunami hazards due to its geographical proximity to the Makran Subduction Zone (MSZ), one of the most seismically active margins of the northern Indian Ocean.
Nayan Sharma, Toshitaka Baba, Kenji Satake, Javed N. Malik, Mahendrasinh Gadhavi   +4 more
doaj   +1 more source

The relation between tectonics and sedimentation along the 'Sillaro line' (Northern Apennines, Italy) [PDF]

, 1979
The transverse 'Sillaro line' is merely the outcrop line of the north-west dipping overthrust plane of the Liguride Complex. The anti-Apenninic strike of this overthrust plane is the result of the 'Sillaro flexure', a large synsedimentarily developed ...
Jager, J. de, IVAU: Instituut voor Aardwetenschappen Utrecht, de Jager, J., Tectonics, Structural geology & tectonics   +4 more
core   +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

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
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

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

Regional seismic topographic effects and seismic landslide hazard assessment during the 2023 Ms 6.2 Jishishan earthquake in Gansu, China

Zhongguo dizhi zaihai yu fangzhi xuebao
On December 18, 2023, the Ms 6.2 Jishishan earthquake in Gansu Province triggered widespread landslides, collapses, and slope failures. Recent seismological studies indicate that the event was caused by an east-dipping fault rupture. The extensive ground
Jiamei LIU, tao WANG, Pengju FAN, Mianshui RONG, Qingxu ZHAO, Yijun LIU, shuai LIU   +6 more
doaj   +1 more source

Active Tectonics and Alluvial Rivers [PDF]

Eos, Transactions American Geophysical Union, 2002
Flying into San Francisco, California, for the AGU Fall Meeting from the east coast of the United States, one sees an ever‐changing pattern of rivers below. From straight channels, the rivers take on a meandering pattern, become braided, and form oxbow lakes.
openaire   +1 more source