Results 161 to 170 of about 1,448,996 (320)

Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN

Deep Underground Science and Engineering, EarlyView.
A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan, Chenxi Yin, Guangdong Yang, Shengyong Ding, Bin Tian   +4 more
wiley   +1 more source

Evaluation of the influence of freeze-thaw cycles on the joint strength of granite in the Eastern Tibetan Plateau, China. [PDF]

Sci Rep
Qi L, Wang J, Zhang D, Zhang Y, Ma J.
europepmc   +1 more source

Creep properties and constitutive model of diabase in deep water conveyance tunnels

Deep Underground Science and Engineering, EarlyView.
The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao, Pengxiao Guan, Xiaojie Yang, Keyuan Liu, Mingjiu Cai, Hong Yang   +5 more
wiley   +1 more source

Optimization of Shut-In Time for Hydraulic Fracturing-Assisted Oil Displacement in Offshore Low-Permeability Reservoirs. [PDF]

ACS Omega
Duan B, Li Q, Cai Z, Jiang K, Wang F, Liu Y, Chu M, Ren M, Yan Z, Xie Q.   +9 more
europepmc   +1 more source

Failure characteristics and the energy criterion of rock with a through‐going joint under true‐triaxial unloading conditions: Insights from the DEM model

Deep Underground Science and Engineering, EarlyView.
The rock failure mode is significantly influenced by the contributing factors, such as the joint inclination, the initial confining pressure, and the unloading point. We found six typical rock failure modes after a large number of numerical tests. Abstract Excavation unloading damages rock masses, with preferential failure along geological defects in ...
Fei Liu, Changhui Liang, Sijia Liu, Yongjun Zhang, Luo Wang   +4 more
wiley   +1 more source

Experimental investigation of friction reducer effects on the microstructure and permeability of Longmaxi formation gas shale. [PDF]

Sci Rep
Liu Z, Zhang Y, Ma X, Man X, Tong X, Xie X, Wang Y, Ding Z, Pan Y, Zeng S.   +9 more
europepmc   +1 more source

University of Texas Bulletins for 1918, 1919, 1920, 1921 [PDF]

, 1922
University of Texas at Austin
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Phase transitions, Dirac and Weyl semimetal states in Mn_1-xGe_xBi₂Te₄. [PDF]

Sci Rep
Shikin AM, Zaitsev NL, Estyunina TP, Estyunin DA, Rybkin AG, Glazkova DA, Klimovskikh II, Eryzhenkov AV, Kokh KA, Golyashov VA, Tereshchenko OE, Ideta S, Miyai Y, Kumar Y, Iwata T, Kosa T, Kuroda K, Shimada K, Tarasov AV.   +18 more
europepmc   +1 more source

Gels for CO2 geo‐storage and conformance control: A systemic review of behavior and performance

Deep Underground Science and Engineering, EarlyView.
This review provides a systemic evaluation of potential sealants used in CO2 subsurface storage practices. Critical analyses of how external factors like CO2, pH, brine salinity and hardness, rock mineralogy, pressure, temperature, and injectivity could affect the performance of different sealants are provided. Abstract Carbon capture and storage (CCS)
Funsho Afolabi, Iskandar Dzulkarnain, Sunil Kwon, Dmitriy A. Martyushev, Jang H. Lee, Shiferaw R. Jufar, Fahd Al‐Akbari   +6 more
wiley   +1 more source