Results 231 to 240 of about 219,636 (306)

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Probabilistic analysis of ground settlement induced by soil and rock composite foundation excavation considering spatial variability. [PDF]

Sci Rep
Zhang Y, Zhang Z, Liu S, Gao M, Wang J, Cao J.   +5 more
europepmc   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Tel Shiqmona during the Iron Age: A first glimpse into an ancient Mediterranean purple dye 'factory'. [PDF]

PLoS One
Shalvi G, Sukenik N, Waiman-Barak P, Dunseth ZC, Bar S, Pinsky S, Iluz D, Amar Z, Gilboa A.   +8 more
europepmc   +1 more source

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Autonomous Mobile Inspection Robots in Deep Underground Mining-The Current State of the Art and Future Perspectives. [PDF]

Sensors (Basel)
Konieczna-Fuławka M, Koval A, Nikolakopoulos G, Fumagalli M, Santas Moreu L, Vigara-Puche V, Müller J, Prenner M.   +7 more
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

An innovative determination approach for the support strength of stope roof: a case study. [PDF]

Sci Rep
Li K, Zhang J, Li Y, Fu Z, Xiong Z.
europepmc   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Châtelperronian cultural diversity at its western limits: Shell beads and pigments from La Roche-à-Pierrot, Saint-Césaire. [PDF]

Proc Natl Acad Sci U S A
Bachellerie F, Gravina B, Rigaud S, Dayet L, Thomas M, Lebreton L, Morin E, Lesage C, Falguères C, Bard E, Bahain JJ, Baillet M, Beauval C, Bordes JG, Culioli G, Devièse T, Flas D, Garbé L, Guérin G, Lacrampe-Cuyaubère F, Lahaye C, Mallol C, Marot J, Maureille B, Michel A, Muth X, Regniers O, Tartar E, Teyssandier N, Thibeault A, Todisco D, Tombret O, Rougier H, Crevecoeur I.   +33 more
europepmc   +1 more source