Results 241 to 250 of about 143,249 (287)

Dynamic simulation and intelligent control technology for cutting head load of coal mine roadheader. [PDF]

PLoS One
Feng J, Zhang Y, He Y, Tian M.
europepmc   +1 more source

Experimental study on the performance of concrete linear cutting by high pressure water jet. [PDF]

Sci Rep
Zhang L, Lu J, Li H, Li B.
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Stress wave propagation and crushing mechanism of soft-hard composite coal under water-jet impact load. [PDF]

Sci Rep
Li X, Wu R, Cheng L, Qi Y, Wang H, Shen P.   +5 more
europepmc   +1 more source

Thermal characteristics and removal mechanism of high energy plasma jet rock-breaking

Petroleum Science
Yan-Cong Han, Chao Zheng, Yong-Hong Liu, Xin-Lei Wu, Ren-Peng Bian, Peng Liu   +5 more
openaire   +1 more source

Research on an intelligent drilling parameter optimization method using sliding window segmentation based on the hydraulic-mechanical specific energy model. [PDF]

PLoS One
Li W, Liu Y, Li X, Deng B, Zhao H, Zhu L, Zain U.   +6 more
europepmc   +1 more source

Probing rock rupture with naturally occurring nuclide signals. [PDF]

Proc Natl Acad Sci U S A
Zhou JQ, Mao R, Luo X, Cardenas MB, Chen YF, Gan FS, Zhou CB, Li C, Tang H, Hu R, Yang Z, Manga M.   +11 more
europepmc   +1 more source

Evolution of Overburden Fractures and the Water-Conducting Fracture Zone in Closely Spaced Coal Mine Seams under Highly Water-Rich Aquifers. [PDF]

ACS Omega
Liu X, Zheng L, Liu H, Zuo Y, Ren W, Zhu X, Zhou X.   +6 more
europepmc   +1 more source

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On the rock-breaking mechanism of plasma channel drilling technology

Journal of Petroleum Science and Engineering, 2020
Abstract Plasma channel drilling (PCD), which is also known as high-voltage electric pulse drilling, is a highly efficient rock-breaking drilling technology with great development potential. This paper presents a method to study the rock-breaking mechanism of PCD technology.
Xiaohua Zhu, Yunxu Luo, Weiji Liu
openaire   +3 more sources

Research on rock-breaking mechanism of cross-cutting PDC bit

Journal of Petroleum Science and Engineering, 2018
Abstract Cross-cutting PDC (Polycrystalline Diamond Compact) bit is an efficient drilling technology that increases the rock-breaking efficiency and prolongs the service life of the bit through forming mesh-like pattern in the bottom-hole. This paper studies the rock-breaking mechanism of the cross-cutting PDC bit with the combination of both ...
Yingxin Yang, Chunliang Zhang, Min Lin, Lian Chen   +3 more
openaire   +3 more sources