Results 41 to 50 of about 955 (135)

Research and application of intelligent perception while drilling in coal mine

Meitan kexue jishu
To address the urgent demand for transparency in geological support amid the intelligent construction of coal mines, and targeting the problems of difficult information acquisition, low recognition accuracy, and insufficient intelligence in existing ...
Youzhen ZHANG, Quanxin LI, Wangnian LI, Zicheng ZHONG, Long CHEN, Dongdong YANG, Tao CHEN   +6 more
doaj   +1 more source

Automatic rod changing system for the rear section of horizontal directional drilling machines in coal mines

Journal of Physics: Conference Series
Abstract To address challenges such as manual rod changing in long-distance horizontal directional gas extraction wells and large-diameter roof drilling operations, an automatic rear rod-changing system for coal mine horizontal directional drilling rigs was developed, incorporating the rigging and derigging characteristics of ...
Qi Liu, Dongsheng Li
openaire   +1 more source

Machine learning-based prediction of standpipe pressure using operational parameters from offshore directional gas wells in the Nile Delta

Journal of Engineering and Applied Science
The Standpipe Pressure (SPP) is one of the most important drilling parameters as it reflects to wellbore stability and loss circulation. Monitoring SPP values are still challenging due to complex and uncertain downhole changes while drilling.
Ahmad Atef Husseiny, Attia M. Attia, Ahmed G. Hagag   +2 more
doaj   +1 more source

Intelligent drilling system and key technologies for geological assurance in deep coal mining

Meitan xuebao
Drilling engineering serves as a crucial guarantee for the safe and efficient extraction of deep coal resources in underground coal mine, directly serves the construction of the mine geological transparency system and the advanced exploration and precise
Quanxin LI, Fei LIU, Hongbo DONG, Jun FANG, Peng FANG, Jian HAN, Long CHEN, Qiang FAN, Gang ZHANG, Gang CHEN, Guiqin LIU, Zhiwei CHU   +11 more
doaj   +1 more source

Research on Obstacle-Avoidance Trajectory Planning for Drill and Anchor Materials Handling by a Mechanical Arm on a Coal Mine Drilling and Anchoring Robot

Sensors
At present, China’s coal mine permanent tunneling support commonly uses mechanized drilling and anchoring equipment; there are low support efficiency, labor intensity, and other issues.
Siya Sun, Sirui Mao, Xusheng Xue, Chuanwei Wang, Hongwei Ma, Yifeng Guo, Haining Yuan, Hao Su   +7 more
doaj   +1 more source

Tracking of horizontal alignment of the long and large diameter uncharged hole in NATM tunnel

Underground Space
The long and large diameter uncharged hole boring (LLB) method is a cut blasting method that minimizes blast-induced vibrations by creating long and large diameter uncharged holes at the excavation face of tunnels prior to tunnel excavation.
Min-Seong Kim, Sean Seungwon Lee
doaj   +1 more source

Application of long-distance tunneling and detection for advance detection in excavation using shield tunneling machines

Meitian dizhi yu kantan
Objective and MethodDuring the rapid excavation process using shield tunneling machines in coal mines, the advance detection of concealed geological anomalies encounters challenges of limited space and insufficient accuracy.
Chao CHEN, Ping LI, Wei LI, Rong WEI
doaj   +1 more source

DEVELOPMENT OF THE HUMAN-MACHINE INTERFACE OF THE DIRECTIONAL DRILLING SIMULATOR

Problems of Gathering, Treatment and Transportation of Oil and Oil Products, 2020
I.D. Mukhametgaliev, Z.V. Agzamov
openaire   +1 more source

Advances in research on borehole geophysical exploration and associated equipment for advance detection of underground water hazards in coal mines

Meitian dizhi yu kantan
BackgroundDeep coal mining is facing increasingly complex hidden disaster-causing factors, including faults, collapse columns, water accumulation in goaves, confined water in coal seam floors, and hydraulically conductive fracture zones. In this context,
Qiang WU, Xianhui WANG, Donghui YANG, Wenhao XIAO, Zhuangjie CUI, Han CHEN, Zhen SHENG, Yifan ZENG   +7 more
doaj   +1 more source

Effect of Stiffness of Bearings and Gearbox Housing on the Dynamic characteristic of Drive System

Jixie chuandong, 2015
The dynamic characteristic simulation analysis model of a directional drilling machine power head gearbox for different levels of complex is established based on the detailed introduction of the modeling method of main components in gearbox,the influence
Xu Liang, Shi Chunbao, Long Wei
doaj