Results 51 to 60 of about 7,653 (230)
Energy Science &Engineering, EarlyView.Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen +6 more
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Meikuang Anquan, 2020 In view of the working face of coal and gas outburst, adopting the measures of gas drainage and outburst elimination will increase the air leakage in the goaf, and then change the flow field in the goaf, resulting in too long oxidation zone in the goaf,
LI Xin, LIU Dongming, TANG Hui, WANG Bo
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Numerical Simulation of Surface Deformation in Goaf
IOP Conference Series: Earth and Environmental Science, 2020 Abstract Coal mine goaf is a hidden, complex, surface deformation of a large range and easy to cause geological disasters of the bad construction site, the surface engineering construction of great harm. The uneven subsidence, horizontal movement, deformation, collapse and other disasters of the goaf surface have serious potential safety
Dingkang Hu, Nainan He, Debin Gao
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Financial Statement Information and Equity Value: The Role of Real Options Characteristics
Financial Management, EarlyView.ABSTRACT This paper examines whether firm‐specific real options characteristics are equity value‐relevant beyond valuation estimates anchored in financial statements. Using extensive historical data for the United Kingdom, we assess and compare the forecast accuracy and explanatory power for stock prices of equity valuation models based on residual ...
Mingyu (Chandler) Chen +2 more
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Meikuang Anquan, 2023 Aiming at the problem of gas accumulation in upper corner and return air roadway of single U type ventilation mining in early stage of gob-side entry retaining in Mingxin Coal Mine, the mathematical equation of gas convection and diffusion is established
ZHANG Zeyu, QIAO Yonggang, LI Haojun, LUO Tongtong, GUO Qiang, LI Lianghong
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Design of Initial Mining Pressure Relief Scheme for Large‐Size Mining Face: A Case Study
Engineering Reports, Volume 8, Issue 4, April 2026.The numerical simulation analysis method is used to compare the actual mining face (315 m) with the designed mining face (200 m). The results show that the large mining height working face has larger abutment pressure peak and stress concentration factor than the general mining height working face.
Qinghu Wei +3 more
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Design of support system for bord and pillar workings [PDF]
, 2010 The estimation of rock load from the strata and its distribution over the underground mine workings is of prime importance. In Indian coalmines, CMRI- RMR and NGI-Q Systems are mostly used for formulating design of support in rock engineering.
Biswal, Manoj
core
Application of fine-grained binding materials in technology of hardening backfill construction [PDF]
, 2014 The expediency of differential formation of high filling massif chambers based on a developed technology with usage of fine-grained binding materials.
Kuzmenko, O, Petlyovanyy, M
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Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng +7 more
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Zhongguo dizhi zaihai yu fangzhi xuebao, 2021 Taking the investigation of the mined-out area of gypsum mine in Mengxi-Huazhong railway Jingmen-Yueyang section as an example, this paper introduces the comprehensive survey method of the mined-out area by the combination of remote sensing ...
Meng XIE
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