Results 61 to 70 of about 6,644,658 (260)
Climate‐related exposures and seizures in children: A systematic review
Epilepsia, EarlyView.Abstract Objective Climate‐related exposures, including air pollution, temperature extremes, humidity, and atmospheric conditions, are increasingly recognized as potential seizure triggers. As climate change intensifies, understanding the environmental contributors to pediatric seizure risk has important implications for anticipatory guidance and ...
Caroline Sarpy +5 more
wiley +1 more source
Geofluids, 2022 In order to alleviate the relationship between mining and roadway, the 3204 working face and the 3206 roadway in Shanxi Taitou coal mine are taken as an example, and the width of mining and the support parameters of mining while reversing mining and ...
Jiyu Wang, Fangtian Wang, Xigui Zheng
doaj +1 more source
Design method of synergetic support for coal roadway
Procedia Earth and Planetary Science, 2009 AbstractThis paper presents the concept of synergetic support with a comprehensive design method based on the existing support theories and engineering practices. The synergetic support is different from the common combined support method as it can fully mobilize all the components to bring active support and get the effect of 1＋1≥2.
Gang, Liu +3 more
openaire +1 more source
Study of Soft Rock Roadway Support Technique [PDF]
, 2011 Soft rock prevalent in coal-bearing strata in China, a lot of soft rock is buried deep in the larger role of high stress by the formation, and maintenance of the roadway is very difficult to dig.
Lin, Haifeng
core +1 more source
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT Retaining walls are key geotechnical components of road infrastructure, whose seismic performance directly affects the resilience of transportation networks. Despite their importance, seismic fragility models for retaining walls available in the literature refer only to specific case studies.
Amendola C., Conti R., de Silva F.
wiley +1 more source
Study on deformation characteristics and support technology of roadway in deep complex stress field
Scientific ReportsThe deformation of deep roadway is more severe under the influence of high stress, especially in the complex stress field, which is difficult to support and seriously affects the safety.
Sheng-jun Li +6 more
doaj +1 more source
Presplitting Blasting the Roof Strata to Control Large Deformation in the Deep Mine Roadway
Advances in Civil Engineering, 2020 As the mining depth increases, under the influence of high ground stress, the surrounding rock of deep mine roadways shows soft rock characteristics.
Chaowen Hu +3 more
doaj +1 more source
Web-Based Roadway Geometry Design Software for Transportation Education [PDF]
Traditionally, students use pencil and ruler to lay out lines and curves over contour maps for roadway geometry design. Numerous calculations of stopping sight distance, minimum turning radius, and curve alignments are required during the roadway design ...
Chen-Fu Liao, David Levinson
core
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 +4 more
wiley +1 more source
Shock and Vibration, 2015 This paper presented a case study of the failure mechanisms and support design for deep composite soft rock roadway in the Yangcheng Coal Mine of China. Many experiments and field tests were performed to reveal the failure mechanisms of the roadway.
Bangyou Jiang +4 more
doaj +1 more source