Results 71 to 80 of about 1,470,376 (107)
Energy Science &Engineering, Volume 14, Issue 1, Page 412-427, January 2026.Using the pillarless mining face at Zhaozhuang Coal Mine as a case study, the research objective is to accurately and comprehensively understand the stress distribution and its evolution characteristics in flexible concrete pillars along the hollow support pillars under the influence of secondary mining movements during pillarless coal mining ...
Yanhui Zhu +4 more
wiley +1 more source
Study on the Application of Bolt-Grout Reinforcement in the Deep Soft Rock Roadway
, 2011 With the increasement of mining depth, the strata behavior of the roadway is obvious. As the stress of surrounding rock increases, the bottom of the soft rock roadway becomes deformed easily compressed by its top rock and two sides rock, which leads to ...
Zhi Lin Dun, Da Shuai Ren, Lian Wei Ren
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Frontiers in Built EnvironmentThe effectiveness of roadway support in soft rock under high horizontal stress poses a critical technical challenge in underground engineering. It directly affects mine construction progress and mining safety.
Lingjin Zhu +9 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
, 2023 Aiming at the engineering problem of roadway deformation and instability of swelling soft rock widely existed in Kailuan mining area, the mineral composition and microstructure of such soft rock were obtained by conducting scanning electron microscopy, X-
Yupeng Shen +4 more
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Meikuang AnquanIn order to solve the control problems of deformation and failure in soft and thick coal seam in kilometer-deep coal mine, the gob-side roadway in deep loose and weak thick coal seam is taken as the object. Based on on-site investigation and measurement,
Wenwei MA, Wenxu LIANG
doaj +1 more source
, 2011 Based on the submarine soft rock supporting engineering in Beizao Mine, the physical model tests of four kinds of supports were carried out including high strength (HS) roadway without support, HS soft rock roadway with U-shape steel support (U-S-S-S ...
Li Qian An +2 more
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Large deformations in deep soft rock roadways primarily stem from low rock strength under high in situ stress and intense mining disturbance. This renders stability control a critical challenge in tunneling support engineering.
Minghao Yang +7 more
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Study on support optimization of coal roadway with soft and broken surrounding rock
, 2020 With the increase of mining depth, the geological conditions tend to be complex. The problems of high mine pressure and soft and broken surrounding rock are more serious, and the difficulty of support is significantly increased.
Li Li
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LINEAR STABILITY ANALYSIS ON BED CONFIGURATION OF SOFT ROCK PARTIALLY COVERED WITH SEDIMENT [PDF]
, 2017 近年，軟岩洗掘について多くの研究が進められているが，軟岩洗掘時に現れる河床の形状については十分に明らかにされていない．本研究では，部分的に軟岩が露出した河床を対象として軟岩洗掘時の河床の形状の特性を把握することを目的に検討を行った．被覆率Cを用いて河床を覆う堆積物の分布を表現して線形安定解析を行った結果，被覆率が小さくなるにつれ，中規模河床波の要因である攪乱の波長が大きくなることを，理論的に明らかにした．When the layer of soft rock which exists under a ...
IMORI, Keigo +3 more
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