Ngā hua rapu - Ningping YAO

A drilling-punching-hole protection integrated hydraulic caving technology for broken soft and low-permeability coal seams mā Ningping YAO, Shijun HAO, Jinbao ZHANG, Hongchao WEI, Chao NIE

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Development and prospects of underground intelligent drilling rigs for coal mines mā Ningping YAO, Quanxin LI, Qianhai LU, Guangyu PENG, Gang ZHANG, Youzhen ZHANG

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Structural design and parameter optimization of a vibration absorber for rescue casing-while-drilling rigs mā Pu LIU, Ningping YAO, Zujie ZOU, Dong FAN, Hongchao WEI, Binjie HE

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Influence of Matrix Hardness and Diamond Parameters on the Performance of Impregnated Diamond Bits During Rotary-Percussive Drilling mā Zhiming Wang, Ningping Yao, Quanxin Li, Songcheng Tan, Longchen Duan, Jun Fang

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Key technologies for drilling with pneumatic PDM drill in underground coal mine rock boreholes mā Hao LI, Ningping YAO, Li WANG, Hongyan CHEN, Jianqiang WANG, Tianzhu CHEN

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Rotational speed control system of coal mine automatic drilling rig based on extended state observer mā Youzhen ZHANG, Ningping YAO, Quanxin LI, Haitao SONG, Wangnian LI, Guangyu PENG

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Critical technical parameters of large-diameter multi-stage casing drilling for mine rescue mā Chao XU, Ningping YAO, Lei JIANG, Hongjie TIAN, Zhi LIU, Ning ZHU

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Parameter characteristics and rock-breaking mechanisms of horizontal drilling of underground collapsed bodies in coal mines mā Ningping YAO, Xuqian DOU, Zhaoyang HAN, Guohua ZHANG, Yuchen SUN, Hao LI, Li WANG

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A temporal fusion method for modeling the rate of penetration during deep geological drilling mā Yang ZHOU, Chengda LU, Min WU, Xin CHEN, Ningping YAO, Haitao SONG, Youzhen ZHANG

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A model predictive control method for directional borehole trajectories in underground coal mines mā Hao LI, Ningping YAO, Chengda LU, Jinbao ZHANG, Hongchao WEI, Jiajun WU, Jinyu LI

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Real-time lithology identification while drilling based on drilling parameters analysis with machine learning mā Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Chunmiao Liang

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Technologies and equipment for efficient drilling rescue mā Ningping YAO, Zujie ZOU, Zhonghai ZHANG, Jiyun ZHAO, Shijun HAO, Dong FAN, Bin DOU

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Key technology and application of gas regional governance by horizontal well for deep strong outburst coal seam group in Huainan mā Shisen WANG, Ningping YAO, Dianshang LI, Ping LI, Huazhong DING, Fasong BAI, Tongfu DING, Benliang CHEN, Lei SU, Shengfeng JIA, Xinfeng DU

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