Sequential mining is utilized in the fully-mechanized face in Sihe mine.7200/23/38A chock support is used in entry,some problems on its usage and related improvement opinions are put foreward.

• 寺河矿综采工作面巷道采用顺序开采的回采方式。选用7200/23/38A型垛式支架对巷道进行超前支护,实践中提出了支护过程中存在的几点问题并提出了改进意见。