单体液压支柱、铰接顶梁配“π”型梁放顶煤技术是单放中的特殊工艺之一 ,具有一定的代表性 ,特别适用于煤层赋存不稳定、工作面不正规的矿井 ,与传统采煤工艺相比 ,具有高产、高效、低耗、机动、灵活、易于生产管理等优点 ,有较强的推广使用价值。 Single hydraulic prop and articulated roof beam with “π” beam top coal caving technology is one of the special techniques in single release. It has certain representativeness and is especially suitable for the mine with unstable coal seam and irregular working face, Compared with the traditional coal mining technology, with high yield, high efficiency, low consumption, mobility, flexibility, ease of production and management advantages, there is a strong promotion of the use of value.