π型钢梁放顶煤技术在急倾斜厚煤层的应用

The Application of π Steel Beam Caving Mining Technology in Inclined Thick Coal Seam

π型钢梁放顶煤开采技术在倾斜煤层已获得成功,但在急倾斜煤层中的运用尚未见报道。本文论述了π型钢梁放顶煤开采技术在急倾斜煤层中的实验过程与具体措施。通过实验表明,急倾斜煤层在采取一定措施后可采用放顶煤工艺一次采全高,技术优势明显,经济效益可观,安全保障可靠。

π -shaped steel beam caving mining technology has been successful in inclined coal seam, but not yet tried in steep seam. This article discusses the π-shaped steel beam caving mining technology in the steep coal seam in the experiment and its concrete measures. Results showed that certain measures can be taken to use caving mining technology to take full height. Technological advantages were clear, economic considerable benefits can be made, and it is secure and reliable.