Force Analysis and Strength Determination of the Cemented Paste Backfill Roof in Underhand Drift Cut-and-Fill Stopping
Abstract
:1. Introduction
2. Field Measurements
2.1. Introduction to the Case Study
2.2. Measurement Equipment and Solutions
2.2.1. Measurement Equipment
2.2.2. Measurement Solutions
3. Results and Analysis
3.1. Distribution Pattern of the Load on the CPB Roof during the Mining Process
3.2. Stress–Strain Evolution Pattern of CPB Roof during Mining
3.3. Theoretical Analysis
3.3.1. Calculation of Overlying Load of CPB Roof
3.3.2. Evaluation of the Applicability of the Model
3.3.3. Analysis of Stresses on CPB Roof
3.3.4. Evaluation of the Applicability of the Model
3.3.5. Examination of the Mechanical Model of the Filling Body
4. Discussion
4.1. Engineering Application
4.2. Stability Monitoring
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Type | Appearance | Model Number | Measurement Range | Resolution | Precision/%FS |
---|---|---|---|---|---|
Strain gauge | YHZ-0130 | ±1500 με | 1 με | ±0.5 | |
Pressure sensor | YHZ-0701 | 1 MPa | 0.1 KPa | ±0.5 |
Stope | Size/m (Length × Width × Height) | Measurement Solutions | |||
---|---|---|---|---|---|
Type | Buried Depth/m | Type | Buried Depth/m | ||
48# | 35 × 5.0 × 4.5 | Load | 1.0/2.0/3.0 | Stress/Strain | 0.5/1.0/2.0 |
40# | 40 × 5.0 × 4.5 |
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Hu, Y.; Han, B.; Zhang, B.; Li, K. Force Analysis and Strength Determination of the Cemented Paste Backfill Roof in Underhand Drift Cut-and-Fill Stopping. Appl. Sci. 2023, 13, 855. https://doi.org/10.3390/app13020855
Hu Y, Han B, Zhang B, Li K. Force Analysis and Strength Determination of the Cemented Paste Backfill Roof in Underhand Drift Cut-and-Fill Stopping. Applied Sciences. 2023; 13(2):855. https://doi.org/10.3390/app13020855
Chicago/Turabian StyleHu, Yafei, Bin Han, Bo Zhang, and Keqing Li. 2023. "Force Analysis and Strength Determination of the Cemented Paste Backfill Roof in Underhand Drift Cut-and-Fill Stopping" Applied Sciences 13, no. 2: 855. https://doi.org/10.3390/app13020855
APA StyleHu, Y., Han, B., Zhang, B., & Li, K. (2023). Force Analysis and Strength Determination of the Cemented Paste Backfill Roof in Underhand Drift Cut-and-Fill Stopping. Applied Sciences, 13(2), 855. https://doi.org/10.3390/app13020855