Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Jucai CHANG"'
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 6, Pp 1-13 (2024)
This research delves into the mechanical response of surrounding rock in deep coal mine roadways under high static and dynamic loads, utilizing similarity simulation experiments. The focus is on the stress and displacement fields during distinct phas
Externí odkaz:
https://doaj.org/article/24347e5d9c254fb4b3d8d5bfcd768629
Publikováno v:
Case Studies in Construction Materials, Vol 19, Iss , Pp e02514- (2023)
Under the influence of deep high ground stress and strong mining, stress of surrounding rock of gob-side entry increases. The original roadway filling without coal pillar excavation is proposed to cope with the difficult problem of surrounding rock c
Externí odkaz:
https://doaj.org/article/c3b623aae09b46df89d3335bbd0d9724
Publikováno v:
Meitan xuebao, Vol 48, Iss 5, Pp 1996-2007 (2023)
Dynamic stresses severely disrupt and distort deep shaft roadways. It is critical to understand the stress wave propagation and damage characteristics of anchor support body under dynamic loads. On the basis of the SHPB test equipment, the stress wav
Externí odkaz:
https://doaj.org/article/ed810f35b5674f5b8b303e348ba8da79
Publikováno v:
Geofluids, Vol 2023 (2023)
This study is focused on the problem that with the increase of coal seam mining depth, it is difficult to continuously replace mining due to complex roadway layout and unreasonable stope layout. By taking the mining geological conditions of the 62210
Externí odkaz:
https://doaj.org/article/6dfb254a6da34e86898a1e77c42d78d5
Autor:
Lianghuan Yan, Jucai Chang, Longquan Qiao, Wenbao Shi, Tuo Wang, Dongdong Pang, Yuan Li, Yijun Guo
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
The stability control of surrounding rock in deep roadway is becoming more and more difficult, and grouting reinforcement support has become the mainstream of roadway control. In order to obtain the ratio of quasi-sandstone material corresponding to
Externí odkaz:
https://doaj.org/article/3243a73bf2aa47cfa8bf27d4851a17d8
Publikováno v:
Applied Sciences, Vol 13, Iss 10, p 6077 (2023)
To investigate and analyze the influence of different stress environments on the deformation and destabilization of the rocks surrounding laminated roadways under high stress, this study conducted numerical simulations of coal–rock combination unde
Externí odkaz:
https://doaj.org/article/bc36fe65c1ab49ce8efcc6da6995ab9c
Publikováno v:
Applied Sciences, Vol 13, Iss 7, p 4641 (2023)
Soft broken surrounding rock exhibits obvious rheological properties and time-dependent weakening effects under the action of deep high-ground stress, leading to the increasingly prominent problem of sustained large deformation in deep roadways. In t
Externí odkaz:
https://doaj.org/article/0d50fa5759c2400694a5674123c266b9
Publikováno v:
Lithosphere, Vol 2022, Iss Special 11 (2022)
AbstractIn this study, the movement and failure law of working face overburden and the distribution characteristics of mining stress are analyzed using laboratory test and numerical calculation methods to address the problems of large deformation, fa
Externí odkaz:
https://doaj.org/article/f103e3f6083d43f9b0c7a4377b80fb09
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
To study the evolution law of axial force and shear stress of a full-length anchorage bolt in a rectangular roadway during roadway driving and working face mining, based on the stress analysis of the bolt, considering the elastic parameters and geome
Externí odkaz:
https://doaj.org/article/0d3e5bfa93f849d4bbb082744b757b17
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The problem of low digging efficiency and mining imbalance due to outdated digging technology and low degree of equipment intelligence has long existed in coal mine roadway excavation work. Lithology identification is the key to the intelligence of r
Externí odkaz:
https://doaj.org/article/8c7444a0d66a490ca94d46069b488e6d