结合哈拉沟煤矿22402工作面初采期煤层覆岩结构特征,对该工作面溃水溃沙事故的原因进行了分析,并提出了对应的防治措施。结果表明,22402工作面初采期煤层覆岩属单一关键层结构,关键层破断发生滑落失稳导致其上覆岩层整体断裂下沉,导水裂隙带导通了含水层与工作面,含水层水带动其上部沙粒溃入工作面而发生溃水溃沙事故。据此从开采前、开采期间和事故应急抢救3个方面,提出了工作面溃水溃沙事故的防治技术。 Combined with the characteristics of overburden strata in the initial mining period of 22402 working face in Halagou coal mine, the causes of collapsible and collapsible sand collapse on the working face were analyzed and the corresponding control measures were put forward. The results show that the overburden strata in the initial mining period of 22402 is a single key stratum, and the failure of the key stratum is caused by the slippage and failure of the overlying strata. The aqueduct and aqueduct lead to the aquifer and aqueduct Water led the upper part of the sand into the work surface collapses and collapses. Based on this, three prevention and cure technologies of collapsible and collapsible surface accident are put forward from the aspects of pre-mining, mining and emergency rescue.