Results 121 to 130 of about 802,471 (295)

Multiphysics Coupled Response of Stress and Seepage in Coal Under Borehole Disturbance and Optimization of Borehole Parameters

Energy Science &Engineering, EarlyView.
One‐way FLAC3D‐COMSOL coupled modeling and field validation show that a 150 mm borehole radius with 5 m spacing provides the best coordination of plastic‐zone expansion, stress relief, permeability enhancement, and gas‐pressure attenuation, increasing the pure gas drainage rate by 35.4%. ABSTRACT To rationally determine the borehole radius and borehole
Yewu Bi, Yichen Li, Yangyang Guo, Yikai Zhang, Jiazhi Sun, Kangnan Li, Yongpeng Fan, Qixian Li   +7 more
wiley   +1 more source

Study on Roof‐Control Technology for Gob‐Side Entry Retaining Under Composite Roofs

Energy Science &Engineering, EarlyView.
This study develops a roof‐control technology system for gob‐side entry retaining under composite roofs. By integrating field measurements, theoretical analysis, and numerical simulation, it reveals the spatiotemporal evolution of the plastic zone and proposes a targeted support method, providing theoretical and practical guidance for safe and ...
Dong Li, Yujiang Zhang, Yunlou Du, Haodong Zheng, Baoji Yang   +4 more
wiley   +1 more source

Occurrence law and classification prevention of rock burst in coal mines of Shaanxi Province

Meitan kexue jishu
With coal resource extraction areas are constantly shifting towards the west and deeper regions, and the number of rock burst mines in the western region is increasing rapidly.
Junfeng PAN, Shaohong LIU, Wentao MA, Yongxue XIA, Shuwen WANG, Meihua FENG   +5 more
doaj   +1 more source

Prediction of microseismic events in rock burst mines based on MEA-BP neural network. [PDF]

Sci Rep, 2023
Lan T, Guo X, Zhang Z, Liu M.
europepmc   +1 more source

Trojan baseball team from Little Rock University

, 2008
The Trojan baseball team from Little Rock University plays a game.Original held at Ottenheimer Library, University of Arkansas at Little ...
UALR News Bureau (Little Rock, Ark.)
core   +1 more source

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Prevention and Control Method of Rock Burst Strata and Shock Resistance of Shield with TBM in Deep Buried High Stress Tunnels

工程科学与技术
ObjectiveIn order to study the rock burst prevention and control method of open TBM in deep-buried high-stress tunnels and solve the problem of high risk and low efficiency of open TBM construction in rock burst strata, the coping techniques of open TBM ...
LU Yiqiang, HE Fei, WANG Mingyao, XING Yunbo, LIAO Jianxing, FENG Huanhuan, MA Tianhui   +6 more
doaj  

Research on dynamic response characteristics of normal fault footwall working face and rock burst prevention technology under the influence of the gob area. [PDF]

Sci Rep, 2023
Tai L, Li C, Gu S, Yu X, Xu Z, Sun L.
europepmc   +1 more source

Creation of a Landslide Susceptibility Map Using Short‐Term Data From the July 2018 Heavy Rainfall in Southern Hiroshima Prefecture

Geological Journal, EarlyView.
This work advances landslide susceptibility mapping by incorporating short‐term trigger data with landscape susceptibility mapping. We also examine the importance of downsampling, watershed delineation and geospatial correlations in evaluating outcomes.
Kanta Kotsugi, Ting Liu, Toshiro Hata, Rebecca Muenich   +3 more
wiley   +1 more source

Burst-by-Burst Adaptive Decision Feedback Equalised TCM, TTCM and BICM for H.263-Assisted Wireless Video Telephony

, 2006
Decision Feedback Equaliser (DFE) aided wideband Burst-by-Burst (BbB) Adaptive Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM) and Bit-Interleaved Coded Modulation (BICM) assisted H.263-based video transceivers are proposed and ...
Ng, S. X., Chung, J. Y., Cherriman, P., Hanzo, L.   +3 more
core   +1 more source