Zobrazeno 1 - 10
of 357
pro vyhledávání: '"XU Yanchun"'
Publikováno v:
Meikuang Anquan, Vol 54, Iss 5, Pp 63-71 (2023)
In order to study the water inrushing mechanism of floor reinforcement working face and the grouting effect in water abundant mining area of North China Coalfield, by means of mechanical formula derivation, hydro-geological characteristics analysis,
Externí odkaz:
https://doaj.org/article/b5f8cd7c7cb440a2934498262abbf4b9
Autor:
XU Yanchun, HUANG Lei
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 1, Pp 369-382 (2023)
To explore the difference of microseismic characteristics in different periods and spaces of the working face and then realize the early warning of water damage, a full-time and space early-warning method for floor water inrush based on microseismic
Externí odkaz:
https://doaj.org/article/a82934898ffe415a8d08da901ef05c73
Publikováno v:
矿业科学学报, Vol 6, Iss 1, Pp 71-81 (2021)
This study is to investigate the influence of slurry viscosity on the diffusion and filling of slurry during grouting reinforcement. Firstly, based on the newly developed test device, the diffusion process of three kinds of viscosity slurry in the aq
Externí odkaz:
https://doaj.org/article/cdbc648c57514a4f9c312affe6342455
Publikováno v:
矿业科学学报, Vol 4, Iss 6, Pp 515-523 (2019)
Water and sand inrush is one of the principal factors that restrict safe and effective production of mining under water body.The threat to soft strata mines with extremely thick coal seam is especially more serious.Caving zone and fissure zone(joint
Externí odkaz:
https://doaj.org/article/09066875166e4deb9fdecf1c28dfc077
Publikováno v:
矿业科学学报, Vol 3, Iss 3, Pp 268-276 (2018)
When the working face passes a non-water filled collapse column，the overlaying strata of the working face can be damaged abnormally owing to the mining influence，which inevitably induces water inrush disaster.To study the abnormal failure laws of
Externí odkaz:
https://doaj.org/article/e98c448f398f42cd86229f5abd631ee5
Publikováno v:
矿业科学学报, Vol 2, Iss 5, Pp 459-466 (2017)
Due to the problem of stress elastic rapid rise of the borehole wall and strain of borehole wall increase when high pressure water injection was stopped, the ventilation shaft of Jining No.3 coal mine was taken as example, through theoretical analysi
Externí odkaz:
https://doaj.org/article/d7f46f30181c4b1eb8e4e9ac0b70ada3
Publikováno v:
In Electric Power Systems Research May 2024 230
Autor:
Xu, Zhe, Bai, Jianyang, Min, Mengru, Cao, Jingyu, Zhang, Yue, Li, Lu, Cao, Jingxin, Ma, Xiaoqian, Xu, Yanchun, Ma, Ling
Publikováno v:
In Pesticide Biochemistry and Physiology February 2024 199
Autor:
Maisog, José M., Li, Wenhong, Xu, Yanchun, Hurley, Brian, Shah, Hetal, Lemberg, Ryan, Borden, Tina, Bandeian, Stephen, Schline, Melissa, Cross, Roxanna, Spiro, Alan, Michael, Russ, Gutfraind, Alexander
Due to escalating healthcare costs, accurately predicting which patients will incur high costs is an important task for payers and providers of healthcare. High-cost claimants (HiCCs) are patients who have annual costs above $\$250,000$ and who repre
Externí odkaz:
http://arxiv.org/abs/1912.13032
Autor:
Lan, Tianming, Li, Haimeng, Yang, Shangchen, Shi, Minhui, Han, Lei, Sahu, Sunil Kumar, Lu, Yaxian, Wang, Jiangang, Zhou, Mengchao, Liu, Hui, Huang, Junxuan, Wang, Qing, Zhu, Yixin, Wang, Li, Xu, Yanchun, Lin, Chuyu, Liu, Huan, Hou, Zhijun
Publikováno v:
In iScience 21 October 2022 25(10)