Numerical Simulation Analysis Based on the Study of the Slag discharge Mechanism of the Triangular-shaped Drill Pipe [PDF]
E3S Web of Conferences, 2021 According to the characteristics of high efficiency and high hole forming rate of the triangular-shaped drill pipe in the process of drilling in soft outburst coal seam, the slag discharge model of annular gap between the triangular-shaped drill pipe and
Tang Dayong +5 more
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Design of Energy-efficient and Energy-efficient Slag Discharge Device for Large-bore Drilling Rigs
Journal of Physics: Conference Series, 2023 Abstract Micro pile hole is a kind of bored pile with a diameter of 100~400mm, which has been widely used in the field of transmission line engineering in recent years, and its hole formation usually uses DTH (Down-the-Hole) drilling rig.
Ruijun Liu +4 more
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Study on un-sticking mechanism of near horizontal hole in soft coal seam
Meikuang Anquan, 2023 In order to reduce the occurrence of drilling accidents in soft coal seams, this paper analyzes the causes of near-horizontal hole drilling under the coal mine and the formation process of jamming, and establishes a drilling mechanical model for each ...
ZHANG Yu
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Meitan kexue jishu, 2023 The shaft is a key project, including the mining of shaft engineering minerals and the development and utilization of underground space. As the lower part of the proposed shaft has the advantage of a production system, the use of gravity slag removal is ...
LIU Zhiqiang +6 more
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International Journal of Electrochemical Science, 2021 To further reduce the production cost of LiFePO4 cathode material and promote the resource utilization of titanium dioxide slag solid waste, this paper chose titanium dioxide slag rich in iron(II) sulfate as raw material.
Ju Guo +3 more
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Research on Optimization of Large Flow Hydraulic Punching Process in Zhaozhuang Mine
Geofluids, 2022 Taking hydraulic punching test of Zhaozhuang Mine as engineering background, by comparing the field application effects of different hydraulic punching processes, the relationship between coal moisture content around the borehole blockage and gas ...
Jiabao Zhang, Dingqi Li
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Research and practice of high speed spiral compound drilling technology in complex weak coal seam
Meikuang Anquan, 2022 In view of the difficult problems of drilling and discharging slag and low hole forming rate in complex weak coal seam of Wangpo Coal Mine, the high speed spiral compound drilling technology is studied, and the performance characteristics of ZDY6000LR ...
LI Yingxi
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Structure Optimization of Rib Drill Pipe Based on Gas-Solid Coupling and Orthogonal Experiment
Shock and Vibration, 2020 At present, drilling rig is a common equipment for controlling gas outburst generated in underground coal mine, and rib drill pipe is an important component of drilling rig.
Jia Li +5 more
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Cleaner Engineering and Technology, 2021 Prevailing alternative technologies of vanadium extraction from vanadium slag that suffer from high production costs, energy consumption and serious environmental pollution due to the large production of toxic solid-liquid-gaseous effluents are that non ...
Jin Wang +5 more
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Environmental Effects of Volcanic Volatile Fluxes From Subaerial Large Igneous Provinces
Geophysical Monograph Series, Page 103-116., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Tamsin A. Mather, Anja Schmidt
wiley +1 more source