Haifeng Ma

Assessment of Blasting‐Induced Ground Vibration in an Open‐Pit Mine under Different Rock Properties

Zhiqiang Yin, Zuxiang Hu, Ze-di Wei et al. · Advances in Civil Engineering · 2018 · 51 citations · Full text

Rock Testing, Engineering, Blasting +23

Experimental Research on Dynamic Evolution Characteristics of Roof Movement and Mining-Induced Stress of Superimposed Mining in a Close Distance Coal Seam Group

Zhiheng Cheng, Haifeng Ma, Cong Sang et al. · Geotechnical and Geological Engineering · 2019 · 22 citations

Geotechnical Engineering, Mining Environment, Engineering +8

Permeability enhancement mechanism of sand‐carrying hydraulic fracturing in deep mining: A case study of uncovering coal in cross‐cut

Shuaifeng Yin, Haifeng Ma, Zhiheng Cheng et al. · Energy Science & Engineering · 2019 · 18 citations · Full text

Rock Testing, Engineering, Mechanical Engineering +19

17.1 An integrated 80V 45W class-D power amplifier with optimal-efficiency-tracking switching frequency regulation

Haifeng Ma, Ronan van der Zee, Bram Nauta · 2014 · 15 citations · Full text

Class-d Power Amplifier, Engineering, Noise Control +16

Experimental Study on Desorption Characteristics of Coalbed Methane under Variable Loading and Temperature in Deep and High Geothermal Mine

Haifeng Ma, Lingjie Wang, Housheng Jia et al. · Advances in Civil Engineering · 2020 · 13 citations · Full text