Results 201 to 210 of about 3,271 (259)

Research on blasting technology for thick and hard roof fracturing in isolated island coal mine working face. [PDF]

Sci Rep
Huang W, Jing G, Ma L, Zhao L, Wang S.
europepmc   +1 more source

Annual Reports to the ESA Council ESA 110th Annual Meeting July, 2025

The Bulletin of the Ecological Society of America, EarlyView.
wiley   +1 more source

Study on mining deformation and fracture response mechanism and rock pressure law of super thick composite key roof. [PDF]

Sci Rep
Lei W, Shang Y, Lu X, Zhang D, Gong H, Yi W, Zhou H, Yuchi X, Qin B, Du X.   +9 more
europepmc   +1 more source

Numerical simulation study on the mining pressure law and collaborative failure of soft-hard interlayer working face. [PDF]

Sci Rep
Hou Z, Li H, Liu G, Xie K, Wu P, Yang Z.
europepmc   +1 more source

Research on the failure law and actual measurement of floor in extremely close distance thick coal seam mining. [PDF]

Sci Rep
Deng Y, Pan W, Ma C, Liu S, Zhao Z, Deng C, Li M.   +6 more
europepmc   +1 more source

Development rule of ground fissure and mine ground pressure in shallow burial and thin bedrock mining area. [PDF]

Sci Rep
Cunhan H, Lili S, Cao Z, Feng D, Zhenhua L, Yongqiang Y.   +5 more
europepmc   +1 more source

Analysis of key geological structures and rockburst prediction method. [PDF]

Sci Rep
Ma C, Yuan Y, Ji X, Peng F, Chen Z, Zhang H.   +5 more
europepmc   +1 more source

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Characteristics of Conicl Diamond Tooth for Breaking Hard Rock Under Vibratory Percussion

57th U.S. Rock Mechanics/Geomechanics Symposium, 2023
ABSTRACT The application of conicl PDC teeth to vibratory percussion drilling technology is expected to break deep hard rock efficiently and improve drilling efficiency. In this paper, the characteristics of conicl diamond tooth cutting and hard rock under percussion are investigated.
Ran Ji, Huaizhong Shi, Zhaowei Sun, Han Chen, Chao Xiong, Hengyu Song   +5 more
openaire   +1 more source

The Development of Microwave Assisted Machineries to Break Hard Rocks

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC), 2011
Novel rock breakage techniques are becoming more viable. According to a major research report on explosive free rock breakage (EFRB) completed by the authors and others, the use of microwave energy was highlighted as a high potential technique in assisting the breaking of hard rocks.
Ferri Hassani, Pejman Nekoovaght
openaire   +1 more source