Zobrazeno 1 - 10
of 1 525
pro vyhledávání: '"Rock breaking"'
Publikováno v:
Jin'gangshi yu moliao moju gongcheng, Vol 44, Iss 5, Pp 599-606 (2024)
Objectives: With the depletion of easily recoverable oil reservoirs, the focus of oil and gas exploration and development in China has shifted to "two deeps and non-conventional" oil and gas fields. This transformation is not only accompanied by a si
Externí odkaz:
https://doaj.org/article/5671a93b2ac849baaf883d7cfec966b2
Autor:
Dongdong Song, Mingmin He, Jian Wang, Heyi Yuan, Ke Liu, Zijie Li, Heng Yin, Jun Yan, Yingxin Yang, Zhen Liu
Publikováno v:
Natural Gas Industry B, Vol 11, Iss 5, Pp 543-552 (2024)
To master changes in rock mechanical properties and the impact of high temperature on rock-breaking efficiency, the rock mechanical properties of granite, limestone, and sandstone under different temperatures and single-tooth static-pressure experime
Externí odkaz:
https://doaj.org/article/7d65ab7e2d764602ad542c51037f4e97
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-13 (2024)
Abstract Rock-breaking specific energy model of bit is the key foundation of evaluation and optimization of downhole drilling condition, while some necessary parameters for the existing models is difficult to measure directly while drilling. Aiming t
Externí odkaz:
https://doaj.org/article/95b1cb0d30b6433bae8a7579a5467256
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-20 (2024)
Abstract Understanding the distribution of cutting force provides a foundation for the design and optimization of cutterhead layout. The simulation of rotary cutting with a large cutting radius remains a challenge for laboratory tests. In this study,
Externí odkaz:
https://doaj.org/article/a1fbc314723f4232936b3db7deaa4d32
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 1-17 (2024)
In view of the energy occurrence structure of “rich coal, poor oil and little gas” in China, and the situation that coal will occupy the dominant position of energy consumption for a long time,The development history of frozen shaft mechanized dr
Externí odkaz:
https://doaj.org/article/4286e711d910454f9bae01ebcb487ce6
Autor:
Junjun Liu, Chuo Zhang, Lei Yang, Xuemin Zhou, Jing Xie, Bengao Yang, Zhiqiang He, Mingzhong Gao
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-33 (2024)
Abstract In order to explore the damage characteristics and crack development laws of hard rock under laser irradiation, laser irradiation experiments on sandstone were conducted considering the interaction of three laser parameters: spot diameter, l
Externí odkaz:
https://doaj.org/article/09006f1898094c81a796df2897dc8a21
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-21 (2024)
Abstract Revealing the influence of confining pressure on the propagation and formation mechanism of rock cracks under particle impact is significant to deep rock excavation. In this study, the three-dimensional fracture reconstruction of the rock af
Externí odkaz:
https://doaj.org/article/74cda15fc7924cfaa1d5b4e39e29747b
Autor:
Chunliang Zhang, Xin Yang, Zhaoliang Zhu, Xiaohua Ke, Zhaofeng Zhang, Hua Luo, Yong Ma, Dongdong Song
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-18 (2024)
Abstract To enhance the drilling efficiency and extend the service life of PDC (Polycrystalline Diamond Composite) bits in shale formations, this study delves into the rock-breaking mechanisms of special-shaped cutters through a comprehensive experim
Externí odkaz:
https://doaj.org/article/ae135d321f7a4a1194c7e8702185b4c2
Autor:
Ying Jiang, Bai-Xin Dong, Jun Fan, Feng Qiu, Hong-Yu Yang, Shi-Li Shu, Fang Chang, Qi-Chuan Jiang, Lai-Chang Zhang
Publikováno v:
Journal of Materials Research and Technology, Vol 31, Iss , Pp 2328-2354 (2024)
Rock breaking has always been a challenging problem that must be solved in projects such as excavating mountains, drilling wells, and constructing railways. Among the rock-breaking cutter steels, AISI H13 steel and wear-resistant high manganese steel
Externí odkaz:
https://doaj.org/article/af5eae70bc284bed9793035ef9b1822e
Publikováno v:
Meitan kexue jishu, Vol 52, Iss S1, Pp 259-268 (2024)
Rapid excavation of hard rock tunnels was a crucial aspect in achieving intelligent and efficient coal mining. Cantilever roadheaders, TBMs, and bottom cutting equipment are all attempting to address this challenge. The development of excavation tech
Externí odkaz:
https://doaj.org/article/409848a9e98e43fe9a97d85c8833dc7e