复合顶板炮采放顶煤支架防推措施

The measures of anti-trundling support down under complex roof using blasting top-coal-caving method

根据复合顶板推跨型冒顶事故的机理，通过在郑煤团超化矿应用倒拉杆、对接抬棚和提高支柱初撑力措施，成功地解决了复合顶板下炮采放顶煤工作面支架稳定性问题，并提出要根据现场空间、回采工艺。

Abstract The paper analyzes the mechanism of roof-fall due to support trundling down under complex roof. It proposes several methods to increase the roof stability of mining face using blasting top-coal-caving such as using special bars connecting supports, jointing support bedplate together and increasing prop setting load.