Results 21 to 30 of about 2,465,153 (198)

Rock burst criteria and control based on an abutment‐stress‐transfer model in deep coal roadways

Energy Science & Engineering, 2020
With the increase in cover depth of the coal seam, more and more rock bursts have occurred in deep coal roadways. The conventionally used passive preventive measures are not sufficient to reduce rock burst hazards in deep coal mines.
Ming Zhang, Fuxing Jiang
doaj   +1 more source

The Deformation, Failure Mechanisms, and Stability Control of the Surrounding Rock of Deep Cross-Measure Roadway: A Case Study

Advances in Civil Engineering, 2023
In view of the difficulty in controlling the surrounding rock stability of deep cross-measure roadways, a deep cross-measure roadway of the Wanfu coal mine, a typical high-stress mine, was monitored on site and analyzed under the original support scheme.
Wenzheng Du, Rui Pan, Hongjin Sun
doaj   +1 more source

Stability Analysis of Roadway Groups under Multi-Mining Disturbances

Applied Sciences, 2021
The roadway stability has been regarded as the main challenging issue for safety and productivity of deep underground coal mines, particularly where roadways are affected by coal mining activities.
Yuantian Sun, Ruiyang Bi, Qingliang Chang, Reza Taherdangkoo, Junfei Zhang, Junbo Sun, Jiandong Huang, Guichen Li   +7 more
doaj   +1 more source

Damage evolution characteristics of coal body in borehole at deep roadway wall and strength weakening mechanism of surrounding rock in borehole

Meitan xuebao
Coal seam drilling pressure relief technology is an important means to prevent and control rock burst disasters. Using the self-developed real-time CT scanning true triaxial loading test system, the force-strain law and internal crack propagation ...
Ke DING, Hualei ZHANG, Lianguo WANG, Jiaxing GUO, Yaoyao MENG   +4 more
doaj   +1 more source

Analog Tensor Processing With Carbon Nanotube In‐Memory Matrix Multiplications for Edge Computer Vision Acceleration

Advanced Materials, EarlyView.
This work prototypes a carbon nanotube‐based analog tensor core that performs in‐memory, parallel visual processing. Integrating non‐volatile memories and compact circuits, the core enables high‐speed analog matrix multiplications and can demonstrate accurate three dimensional (3D) spatial transformation and edge detection. With lightweight design, the
Jingfang Pei, Lekai Song, Songwei Liu, Yingyi Wen, Yaoqiang Zhou, Yang Liu, Pengyu Liu, Wenyu Cui, Xin Lu, Teng Ma, Zegao Wang, Guohua Hu   +11 more
wiley   +1 more source

Clinical neuroanatomy teaching at Peking University Health Science Center: Evolution, current practice, and future direction

Anatomical Sciences Education, EarlyView.
Abstract Neuroanatomy has been considered one of the most challenging subjects in medical education, often leading to “neurophobia” and discouraging students from pursuing neurological specialties. At PKUHSC, the curriculum has evolved from a traditional, discipline‐based model to a technology‐enhanced, integrated “Nervous System” module for ...
Xuan Fang, Man Li, Xiaodan Hu, Chang Su, Shan Ye, Xianzhong Shi, Xiaomei Yang, Changman Zhou, Weiguang Zhang, Chunhua Chen   +9 more
wiley   +1 more source

Roadway Lighting and Safety: Phase II – Monitoring Quality, Durability and Efficiency;TR-601, November 2011 [PDF]

, 2011
This Phase II project follows a previous project titled Strategies to Address Nighttime Crashes at Rural, Unsignalized Intersections. Based on the results of the previous study, the Iowa Highway Research Board (IHRB) indicated interest in pursuing ...

core  

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Roadway Lighting and Safety: Phase II – Monitoring Quality, Durability and Efficiency, November 2011 [PDF]

, 2011
This Phase II project follows a previous project titled Strategies to Address Nighttime Crashes at Rural, Unsignalized Intersections. Based on the results of the previous study, the Iowa Highway Research Board (IHRB) indicated interest in pursuing ...

core  

Research on Permeability Enhancement Model of Pressure Relief Roadway for Deep Coal Roadway Strip

, 2022
Aiming at the problem of permeability enhancement in deep coal roadway strip, it proposed a pressure relief roadway permeability enhancement model, and the model was verified through experiments, theoretical calculations, and field tests.
Chengcheng Li, Zhonghua Wang, Jun Liu, Jianjun Cao   +3 more
core   +1 more source