千米深井工作面推进步距与采动应力分布影响规律分析

The Analysis of Effect Regularity Between Advance Step Distance and Mining - induced Stress Distribution in Kilometer Deep Shaft Working Face

摘要: 以开滦矿业集团赵各庄煤矿为工程背景,采用理论分析、数值模拟和现场实测等方法对埋深在-1 100 m以下的2337E工作面的采动应力分布规律进行了对比研究和分析,得到了千米深井条件下采动应力变化与工作面推进步距的"有限协同效应",即随工作面推进步距的增加,超前支承压力峰值、影响范围、峰值位置距煤壁距离都会相应增加,但不会超过一个稳定值。
- 千米深井 /
- 数值模拟 /
- 支承压力 /
- 推进步距 /
- 有限协同效应
Abstract: Basing on the engineering condition of Zhaogezhuang coal mine of Kailuan mining group,adopting theoretical analysis,numerical simulation and field measurement method,the mining stress distribution in the 2337E working face buried under 1 100 m comparatively was researched and analyzed.By doing this research,the " limited-synergy effect" which explains the relationship between mining stress change and working face advancing step distance under the condition of kilometer deep shaft was got.With the increase of advancing step distance in the working face,the advanced support pressure peak,influence area and the distance of peak position to coal-wall will have corresponding increase while the increase will not surpass a stable value.
- kilometer deep shaft /
- numerical simulation /
- support pressure /
- advancing step distance /
- limited-synergetic effect

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