Results 71 to 80 of about 5,255,039 (212)
Experimental Study of Influence of Karst Aquifer on the Law of Water Inrush in Tunnels
Water inrush is a geological hazard often encountered in tunnel construction. In order to overcome problems encountered when using the existing water-inrush simulation model test, such as single function, low repetition utilization rate, and poor ...
Xueqing Li +9 more
core +1 more source
Dynamics and Mechanisms of Sudden Free Drainage in Saturated Media
Abstract Sudden free drainage in saturated media under gravity is widespread and potentially destructive, yet its controlling mechanisms remain poorly understood. To address this knowledge gap, this study conducted 77 one‐dimensional sudden free drainage experiments covering particle sizes of 2.0–20.0 mm, porosities of 0.40–1, water temperatures of 22 ...
Xiaoxiao Zhou, Qiyou Zhou
wiley +1 more source
This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin +4 more
wiley +1 more source
Water Inrush Hazard in Shijingshan Tunnel during Construction, Zhuhai, Guangdong, China
This short communication reports a water inrush hazard during the construction of the Shijingshan Tunnel in Zhuhai, Guangdong, China. On 15 July 2021, a water inrush accident occurred at the construction site 1.16 km away from the tunnel entrance ...
Lin-Shuang Zhao, Ning Zhang, He-Qi Kong
core +1 more source
Through field observation and theoretical study, we found that the Hanxing mining area has a typical ternary structure in coal mining under high water pressure of the aquifer. This ternary structure is the Ordovician limestone aquifer-aquiclude including
Huichao Yin +5 more
doaj +1 more source
A carbon nanotube field‐effect transistor (NTFET) sensor array is constructed to screen different opioids with machine learning models. Codeine, fentanyl, hydrocodone, and morphine are tested using the NTFET sensor array and classified with both conventional supervised learning models and deep learning models.
Zhengru Liu +7 more
wiley +1 more source
A discrimination method of mine water inrush source
For problems of existing discrimination methods of water inrush source based on hydrochemical characteristics such as complex process, difficulty to distinguish single water inrush point, neglecting the correlation among hydrochemical characteristics, large calculation amount and so on, a discrimination method of mine water inrush source based on Bayes-
JIANG Zihao +4 more
openaire +1 more source
A Novel Digital Twin Platform for Accelerating Power Systems Restoration
Hardware Architecture Design of DT System in Laboratory. ABSTRACT With the global energy structure transforming towards the goal of net zero emissions, the penetration of an inverter‐based resource (IBR) in power systems is increasing. This transformation poses two critical challenges: the system post blackout restoration process becomes extremely ...
Yiliang Fan +8 more
wiley +1 more source
A Forced Union: Exploring the Consequences of India's Removal of Jammu and Kashmir's Special Status
ABSTRACT This article adds to academic literature interested in two core questions: What happens to residents as a result of an annexation? And how do aggressor states maintain control over an annexed territory where there is a history of insurgency and mobilization for independence?
Serena Hussain
wiley +1 more source
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su +4 more
wiley +1 more source

