Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Yanchun YIN"'
Publikováno v:
Meitan xuebao, Vol 49, Iss 1, Pp 367-379 (2024)
With the gradual transfer of shallow coal mining to deep coal mining in China, the rock burst disasters are becoming an increasingly serious problem. In the process of rock burst mechanism cognition to rock burst prevention engineering, the primary t
Externí odkaz:
https://doaj.org/article/d47e691a1c0641779d1e135415d69363
Publikováno v:
Energy Exploration & Exploitation, Vol 42 (2024)
The small-scale roadway model is often used in the fine simulation of mining engineering. The determination of the structure and load conditions of the model has an important influence on the accuracy of the simulation. In this paper, a large-scale s
Externí odkaz:
https://doaj.org/article/c2db9525818f49f29cac8d1ff2543b89
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 11, Pp 23-32 (2023)
Drilling-cutting method is a commonly used coal bump risk detection method in coal seams. The efficient and accurate acquisition of the quality of drilling-cuttings is a technical difficulty in engineering site, which could directly affect the risk d
Externí odkaz:
https://doaj.org/article/f70f67c8930d45e68413093d4411140a
Publikováno v:
Shock and Vibration, Vol 2024 (2024)
In order to study the influence of fissures on the burst tendency of coal, the test and numerical simulation of the burst tendency of coal with different burst angles were carried out. The evolution law of the burst tendency index of coal under the i
Externí odkaz:
https://doaj.org/article/99257cd4c0ff407f8aadc456b537cc6c
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 5, Pp 1662-1670 (2023)
Abstract Drilling cuttings method is a commonly used method to detect the risk of rockburst, which has been widely recognized and applied in coal mines. However, in the current theoretical research on the relationship between drilling cuttings method
Externí odkaz:
https://doaj.org/article/cd1d7549c02343c2844a6f2028a625cb
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 3, Pp 1325-1335 (2023)
Abstract The pressure relief with large‐diameter boreholes is one of the effective methods to prevent coal bumps in deep coal roadway. An unreasonable pressure relief design can cause the rockbolt support failure and aggravate the deformation of th
Externí odkaz:
https://doaj.org/article/178923eb1d5f45c296b406cb95306fe0
Publikováno v:
International Journal of Mining Science and Technology, Vol 31, Iss 3, Pp 495-505 (2021)
Large and super-large section chamber groups in coal mines are frequently affected by dynamic loads resulting from production activities such as roadway driving and blasting. The stability of the surrounding rock is poor, and it is difficult to contr
Externí odkaz:
https://doaj.org/article/46aabcd6a8194b7f897db01097cf1358
Publikováno v:
Energy Science & Engineering, Vol 8, Iss 8, Pp 2831-2840 (2020)
Abstract Large‐diameter borehole destressing technology is one of the main technical measures for the prevention and control of coal mine rock burst. In engineering practice, there is generally a contradicting problem due to the presence of excess
Externí odkaz:
https://doaj.org/article/c264eacc35ee43bc84506473f1fd4831
Publikováno v:
Shock and Vibration, Vol 2022 (2022)
Hydraulic fracturing is an effective mean to prevent coal bumps in deep coal mining. The calculation of stress redistribution of coal sidewall after hydraulic fracturing can evaluate the fracturing effect and provide a reference for the hydraulic fra
Externí odkaz:
https://doaj.org/article/ab927608e86f4896962750bd7bd079f4
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
Based on the similarity theory, sandstone was taken as the prototype, and rock-like specimens were made with the strength ratio of 1 : 1. Single “X” fracture and double “X” fractures were prefabricated in rock-like specimen, and crack propaga
Externí odkaz:
https://doaj.org/article/ade64385300e49f297f6336a1b5817dc