Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Fengnian Wang"'
Autor:
Di Sun, Zhigang Tao, Hong Yang, Haoche Shui, Xiaotian Lei, Fengnian Wang, Shusen Huo, Hang Shu, Weitong Xia, Zhaoxi Wang, Manchao He
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Tunneling in sandy dolomite strata often faces hazards such as collapse, water inrush, and water–sand inrush, seriously threatening the safety of tunnel construction. There are currently limited studies on the mechanical behaviors of sandy dolomite
Externí odkaz:
https://doaj.org/article/db5967c4052f4146a2fbe627d4dd2c5f
Autor:
Fengnian Wang, Baosheng Li, Dongfeng Niu, Xiaoze Li, Yuejun Si, Peixian Shu, Zhiwen Li, Shuhuan Du, Qiwen Chen, Min Chen
Publikováno v:
Water, Vol 16, Iss 20, p 2901 (2024)
The KLD segment of the Kenweiyuan section in Wenchang, Hainan, China is a set of aeolian sand deposits of the Last Deglaciation. The chemical element and heavy mineral analysis performed in this study reveals the chemical index of alteration (CIA) in
Externí odkaz:
https://doaj.org/article/e0eef506a48a48a9b5d4d801efd144f0
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The stability of the tunnel face is the key problem in shield tunnel construction. This paper focuses on the face stability of a shallow tunnel in sand. Numerical simulation and theoretical analysis are combined to study the limit support pressure an
Externí odkaz:
https://doaj.org/article/480e00c4456a482baf986b16760e500d
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
We present a numerical model for blast-induced seismic waves. This model is based on the transformation mechanism of the seismic wave field, and the process of the seismic wave’s generation is divided into two stages. The first stage is the generat
Externí odkaz:
https://doaj.org/article/a82ad9fdd55d4658870d0d3031e168ff
Publikováno v:
Shock and Vibration, Vol 2023 (2023)
To measure and evaluate the impact of vibration on the surrounding buildings and structures during highway rock burst removal and to formulate scientific and reasonable protective technical measures, the authors used the blasting perilous rock remova
Externí odkaz:
https://doaj.org/article/af7f973a96944b3983bd86213a742dea
Autor:
Fengnian Wang, Yuejun Si, Baosheng Li, Dongfeng Niu, Xiaohao Wen, Zhiwen Li, Min Chen, Chen Wang, Yihua Guo, Zhiying Yang
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 32, Iss 2, Pp 159-169 (2021)
The FGS5c-d segment of the Fanjiagouwan section is located in the Salawusu River Valley on the southeast margin of the Mu Us Desert in China. It contains 17 sedimentary cycles consisting of aeolian dune sands and lacustrine facies during 115000 - 930
Externí odkaz:
https://doaj.org/article/d85e758e830e46dfb3be297ea8203d8d
Publikováno v:
Lithosphere, Vol 2021, Iss Special 4 (2022)
AbstractIn recent years, as a new type of gob-side entry retaining method, roadway automatically formed by roof cutting and pressure releasing (RAFRCPR) has been widely used in China. Under the condition of deep mining, the deformation of the gangue
Externí odkaz:
https://doaj.org/article/5782f2d0583a45c283c6cb0dcc1f0870
Publikováno v:
Geofluids, Vol 2022 (2022)
In view of the high gas pressure and low permeability of deep coal seam, it is difficult to control gas, which affects the safety production of coal mine. The technical scheme of hydraulic fracturing to improve the permeability of coal seam is put fo
Externí odkaz:
https://doaj.org/article/35f8d8227a8745a999fbb1dbfd9847c9
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
According to the force characteristics of the double-row pile supporting structure, two new types of double-row piles are developed: the prestressed strong-constrained double-row piles and the recycling assembled double-row piles. A comparative field
Externí odkaz:
https://doaj.org/article/b9ddf9ab317b4462a194653c3ce0aef7
Publikováno v:
Geofluids, Vol 2021 (2021)
As a representative of cliff-like stone cultural relics, caves are carved on natural mountains and cliffs, which overlap with the influence zone of the geological unloading zone. Cracks in the unloading zone lead to stability issues, including fallin
Externí odkaz:
https://doaj.org/article/289f9da4190d43918714c9867a890a23