Meiqiang Dong
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Meiqiang Dong has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Jun Yang
State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing, China
1 shared publication - Kexue Wang
State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing, China
1 shared publication - Shuyi Zhao
School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
1 shared publication - Wenhui Bian
Department of Hydraulic Engineering, Tsinghua University, Beijing, China
1 shared publication - Zhicheng Sun
School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
1 shared publication - Ziniu Wang
School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
1 shared publication
Latest Publications
- Open Access
Performance Evolution and Formulation Improvement of Resin-Based Anchoring Materials for Hydrochemical Environments
The performance of resin anchoring agents in deep coal mine roadways is significantly compromised by water-bearing and chemically aggressive conditions, posing a major threat to support system reliability. This study aims to systematically quantify this performance deterioration and develop a more resilient material solution for these challenging environments. A comprehensive experimental program was conducted, including uniaxial compression, pull-out, and interface shear tests, accompanied by the systematic improvement of the resin formulation and microstructural analysis via Scanning Electron Microscopy (SEM). The results showed that increasing borehole water content to 30% reduced the compressive strength of conventional resin by over 40%, while acidic environments (pH = 5) caused a 70% drop in its interfacial shear strength. In contrast, an improved formulation incorporating hydroxypropyl acrylate and a super absorbent polymer (SAP) exhibited a 20% higher initial strength, maintained over 85% of its strength under water saturation, and retained functional residual strength in acidic conditions. SEM analysis confirmed that the improved resin’s denser microstructure suppressed interfacial microcrack formation. The findings demonstrate that the improved formulation provides a robust material basis for enhancing the long-term durability and safety of anchorage support systems in extreme underground engineering environments.
Open AccessPerformance Evolution and Formulation Improvement of Resin-Based Anchoring Materials for Hydrochemical Environments
The performance of resin anchoring agents in deep coal mine roadways is significantly compromised by water-bearing and chemically aggressive conditions, posing a major threat to support system reliability. This study aims to systematically quantify this performance deterioration and develop a more resilient material solution for these challenging environments. A comprehensive experimental program was conducted, including uniaxial compression, pull-out, and interface shear tests, accompanied by the systematic improvement of the resin formulation and microstructural analysis via Scanning Electron Microscopy (SEM). The results showed that increasing borehole water content to 30% reduced the compressive strength of conventional resin by over 40%, while acidic environments (pH = 5) caused a 70% drop in its interfacial shear strength. In contrast, an improved formulation incorporating hydroxypropyl acrylate and a super absorbent polymer (SAP) exhibited a 20% higher initial strength, maintained over 85% of its strength under water saturation, and retained functional residual strength in acidic conditions. SEM analysis confirmed that the improved resin’s denser microstructure suppressed interfacial microcrack formation. The findings demonstrate that the improved formulation provides a robust material basis for enhancing the long-term durability and safety of anchorage support systems in extreme underground engineering environments.