特厚煤层综放采场矿压特征的埋深效应

Buried Depth Effect of Pressure Characteristics of Fully-mechanized Caving Stope in Super High Seam

摘要: 基于理论分析和数值模拟技术，对特厚煤层大采高综放采场矿压特征的埋深效应进行了系统的研究。研究结果表明：地应力、煤体的支承压力、顶板岩层进入塑性屈服状态的高度和范围，底煤、顶煤和顶板超前破坏距离与范围，垂直应力峰值以及应力峰值超前工作面距离等均会随着埋深增加而逐渐增大；同时，控顶区内顶煤下沉量随埋深的增大呈对数规律增大。
- 采矿工程 /
- 特厚煤层 /
- 综放开采 /
- 矿压特征 /
- 埋深效应
Abstract: Based on theoretical analysis and numerical simulation technology, we systematically study the buried depth effect of pressure characteristics of full-mechanized caving stope in special thick coal seam with large mining height. The results show that in-situ stress, coal bearing pressure, the height and scope of roof strata entering into plastic yielding state, the advancing damage distance and range of bottom coal, top coal and roof, the vertical stress peak and the distance of peak stress ahead of working face will increase with the increase of buried depth gradually; at the same time, the sinking amount of top coal in the roof control area increases in logarithmic regularity with the increase of the buried depth.
- mining engineering /
- thick coal seam /
- fully-mechanized top coal-caving mining /
- underground pressure characteristics /
- buried depth effect

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