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Yongzhen Ma

China University of Mining & Technology

SCHOLARLY PAPERS

2

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114

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Scholarly Papers (2)

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1.

A Safety Evaluation System for Urban Metro and its Applications

Number of pages: 28 Posted: 05 Dec 2022
Jianwei Cheng, Yongzhen Ma, Chang Qi, Shuping Sheng and Dezhi Ran
affiliation not provided to SSRN, China University of Mining & Technology, affiliation not provided to SSRN, affiliation not provided to SSRN and affiliation not provided to SSRN
Downloads 79 (837,727)

Abstract:

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metro operational safety, evaluation index system, safety system engineering, analytic hierarchy process, semi-quantitative safety evaluation table method

2.

Performance and Application of New Inorganic Retarding Sealing Material Suitable for Multi-Scale Fractures

Number of pages: 42 Posted: 06 Feb 2023
Jianwei Cheng, Ma Zhiyuan, Wang Yu, Fu Qiang, Dezhi Ran, Yongzhen Ma, Yang Chengtao, Xincheng Hu and Tingxiang Chu
China University of Mining & Technology, China University of Mining & Technology, China University of Mining & Technology, China University of Mining & Technology, China University of Mining & Technology, China University of Mining & Technology, Henan Energy and Chemical Industry Group Research Institute Co. Ltd., Guizhou University and North China Institute of Science & Technology
Downloads 35 (1,263,436)

Abstract:

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gas extraction, sealing material, Diffusivity, Rheology, applications in the field