Zobrazeno 1 - 10
of 2 243
pro vyhledávání: '"pressure relief"'
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 12, Pp 5493-5503 (2024)
ABSTRACT As an effective means of coal burst prevention, large‐diameter drilling pressure relief technology have been widely used in coal burst mines in China. Engineering practice shows that drilling pressure relief has obvious time‐effect. Thro
Externí odkaz:
https://doaj.org/article/05fd133b77814d458f30fcd69bcfaccf
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 153-160 (2024)
In order to study the deformation law of roadway roof in the reuse retaining roadway stage of “110” construction method and determine the reasonable roadway support load, and to solve the safety hazards of the reuse of the retained roadway, takin
Externí odkaz:
https://doaj.org/article/a665a15735c34d268c4150fbed0e1828
Autor:
Shankun ZHAO, Bingqin WANG, Zhenguo SU, Shaogang LI, Yue SHI, Xincheng SANG, An LIU, Weige HAN
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 10-21 (2024)
With the extensive development of coal resources in Shaanxi and Mongolia, rock burst phenomenon has gradually become an important problem affecting the safety production of coal mines. Aiming at the problem of uniform pressure relief of hard thick ro
Externí odkaz:
https://doaj.org/article/d03f22d48b97420f80c22114bda22d7a
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract To address the issues of uncertain pressure relief effectiveness and poor control of surrounding rock caused by the composite nature of the roof strata in the gob-side entry retained (GER), as well as significant changes in strata’s thickn
Externí odkaz:
https://doaj.org/article/461b090bf0184bea844726dc96ea88f9
Publikováno v:
Taiyuan Ligong Daxue xuebao, Vol 55, Iss 6, Pp 989-999 (2024)
[Purposes] This research is conducted to exploret the roof movement law of double roadway arrangement in thick coal seam and the abutment pressure distribution mechanism of surrounding rock. [Methods] The roof cuttings of single roadway in belt chann
Externí odkaz:
https://doaj.org/article/53c38fa004a44b70b9900cd38c5c538b
Autor:
Wang Hongwei, Feng Li, Zhao Zhouyan, Li Yanjun, Cao Peipei, Jiao Jianqiang, Jiang Baolin, Liu Yong
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 11, Pp 5105-5118 (2024)
Abstract In mining, the roof structure of a working face with a large mining height in a shallow‐buried coal seam is prone to cutting instability in front of the support, which causes support crushing and coal‐wall spalling. This study analyzes 2
Externí odkaz:
https://doaj.org/article/96eda438a8884ddcb1978bb38f6e387b
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 11, Pp 5230-5244 (2024)
Abstract A nonexplosive expansion method is proposed to apply in the field of rock burst prevention and control in coal mine. The principle of the expansive agent reaction was analysed and specimens with one hole and two holes were tested with and wi
Externí odkaz:
https://doaj.org/article/e60af1d2242549aeaf892506abdba50d
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract In order to effectively control the large deformation of coal pillar and roadway during entry retained along gob side with small coal pillar, taking 1311 and 1312 working faces of a coal mine in Shanxi Province as engineering background, the
Externí odkaz:
https://doaj.org/article/21e6662a839641e6b8e7e28addeb6e7c
Autor:
Wulin Lei, Xuanhong Du, Dingding Zhang, Jian Wang, Rili Yang, Chao Zheng, Xu Huang, Siyang Wang, Jian Zhao, Juheng Cao
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 10, Pp 4703-4719 (2024)
Abstract To study the influence of different geological and mining factors on the decompression effect of protective layer mining, a numerical simulation was carried out using FLAC3D numerical software. Taking the Hulusu coal mine as the engineering
Externí odkaz:
https://doaj.org/article/cc69d7a2d92642d5813a582fdd8460ae
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 137-149 (2024)
The surrounding rock of the impact hazard roadway is often disturbed by external dynamic loads, which often leads to the occurrence of impact ground pressure. In order to explore the anti impact and pressure relief effects of large-diameter pre relie
Externí odkaz:
https://doaj.org/article/f4677e23e78047baa45555c06c5ac025