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Related Concept Videos

Microcracking in Concrete01:20

Microcracking in Concrete

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Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
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Yield Criteria for Ductile Materials under Plane Stress01:25

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In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
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Related Experiment Video

Updated: May 21, 2025

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation
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A prediction method for mining-induced surface cracks in Yushenfu mining area.

Zhao Bingchao1,2,3, Feng Xinyi4, Zhao Yang1

  • 1College of Energy Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China.

Scientific Reports
|March 23, 2025
PubMed
Summary

High-intensity coal mining in Yushenfu can cause surface cracks. This study developed a new method using horizontal deformation to accurately predict the location and depth of these mining-induced surface cracks.

Keywords:
Ground cracksHorizontal deformationMining subsidencePrediction methodSurface loose layer

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Area of Science:

  • Geotechnical Engineering
  • Mining Engineering
  • Environmental Science

Background:

  • High-intensity coal mining in the Yushenfu area poses risks of surface cracks and ecological damage due to unique geological conditions.
  • Predicting mining-induced surface cracks is crucial for mitigating environmental and infrastructural impacts.

Purpose of the Study:

  • To develop and validate an accurate method for predicting the location and depth of surface cracks caused by coal mining.
  • To incorporate stress-deformation characteristics of the loose geological layer into the prediction model.

Main Methods:

  • Selected the Yushenfu mining area for study and optimized a horizontal deformation prediction formula.
  • Classified the active subsidence phase into two stages and developed a mechanical model for wedge-shaped loose layers.
  • Integrated the mechanical properties of the surface loose layer and considered seasonal rainfall's effect on soil strength.

Main Results:

  • The optimized horizontal deformation formula demonstrated superior performance over traditional calculation methods.
  • The proposed prediction method accurately determined the location and depth of surface cracks.
  • On-site observations validated the accuracy and effectiveness of the developed method.

Conclusions:

  • The study provides an effective approach for predicting mining-induced surface cracks in the Yushenfu mining area.
  • The method enhances the ability to manage and mitigate the environmental consequences of coal mining activities.
  • Accurate prediction of surface crack parameters is vital for sustainable mining practices.