Fracture Characteristics of Floor Strata due to Double Longwall Mining on Confined Aquifer
-
摘要: 以淮北楊莊礦承壓水體上對拉工作面開采為背景,通過現場實測、相似模擬實驗和數值分析,揭示了承壓水體上對拉工作面開采底板巖層應力分布和底板破壞規律,重新認識了對拉面不同開采參數對底板巖層力學行為的影響.提出了承壓水體上對拉面安全開采的合理技術參數和預防底板突水的工程對策.Abstract: Based on double longwall mining on confined aquifer in Yangzhuang colliery, the stress dis-tribution and fracture characteristics in floor strata are investigated by means of in-situ measurement, physical modeling and numerical analysis. The influence of different mining parameters on the mechanical behavior of floor strata is recognized. The rational technical parameters and engineering measures are proposed through the study for safe mining on confined aquifer.
-
Key words:
- confined aquifer /
- double longwall mining /
- failure of floor strata
-

計量
- 文章訪問數: 152
- HTML全文瀏覽量: 34
- PDF下載量: 6
- 被引次數: 0