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Dive into the research topics where Feng Chun is active.

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Featured researches published by Feng Chun.


Geosystem Engineering | 2015

Strength characteristics of soil rock mixture under equal stress and cyclic loading conditions

Fan Yongbo; Oyediran Ibrahim Adewuyi; Feng Chun

Soil rock mixture (SRM) is a special geological material with non-uniform rock distribution, non-continuous cementation between rock and soil, and size effect structural characteristics, hence, possessing mechanical properties different from rock or soil. Field survey indicated that the surface layer of SRM above the rock slope was almost unstable under cyclic loading; however, at the same time, the slope itself was stable. This phenomenon exceeded initial judgments, thus it was important to study the mechanical characteristics of SRM under cyclic loading. Numerical simulation using continuum-based discrete element method was employed to study the strength degradation and failure mechanism of SRM under different frequencies, dynamic stress amplitudes and durations. Results show that the peak stress gradually increased with the increasing dynamic stress amplitude and frequency, but decreased with the increasing percentage of rock because the stiffness decreased greatly under cyclic loading. At the same time, the elasticity modulus decreased gradually with the dynamic stress amplitude and increasing frequency.


Archive | 2016

High pressure gas fragmentation iron ore test device

Li Shihai; Fan Yongbo; Feng Chun; Qiao Jiyan; Fang Zhou; Guo Rukun


Archive | 2016

Device and method for crushing ironstone by high-pressure liquid CO2

Fan Yongbo; Li Shihai; Qiao Jiyan; Feng Chun; Guo Rukun; Zhou Yang


Archive | 2016

Method for preparing ceramic powder through liquid-state CO2

Fan Yongbei; Li Shihai; Qiao Jiyan; Duan Wenjie; Feng Chun


Archive | 2016

Method for utilizing drop hammer in hole to detect equivalent elastic modulus of rock mass

Xiong Hongqi; Sun Houguang; Feng Chun; Han Zhonghe; Luan Hui; Qiao Jiyan; Guo Rukun; Li Shihai


Archive | 2017

Carbon dioxide pulverizing and mining apparatus and method for shale gas exploration

Li Shihai; Zhou Dong; Fan Yongbo; Feng Chun


Archive | 2017

Method for preparing cement powder by liquid CO2

Li Shihai; Fan Yongbo; Qiao Jiyan; Duan Wenjie; Feng Chun


Archive | 2017

Low-temperature high-pressure liquid state CO2 replacement device and using method thereof

Duan Wenjie; Li Shihai; Fan Yongbo; Qiao Jiyan; Feng Chun


Archive | 2017

Method and device for testing rock mass strength through technology of monitoring during drilling

Li Shihai; Feng Chun; Guo Rukun; Qiao Jiyan; Zheng Bingxu; Li Zhanjun; Cui Xiaorong


Archive | 2017

Efficient and energy-saving device and method for preparing iron ore powder through liquid CO2

Fan Yongbo; Li Shihai; Duan Wenjie; Qiao Jiyan; Feng Chun; Zhang Li; Zhang Dongshuang

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Li Shihai

Chinese Academy of Sciences

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Qiao Jiyan

Chinese Academy of Sciences

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Fan Yongbo

Chinese Academy of Sciences

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Duan Wenjie

Chinese Academy of Sciences

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Zhou Yang

Chinese Academy of Sciences

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