从安装、组对、焊材选用、焊接顺序、坡口形式到焊接检验、验收标准均进行了详细叙述。
The inspecting standards from installation, selection of materials, welding sequence and groove shapes to the welding check are given a minute description.
寺河矿综采工作面巷道采用顺序开采的回采方式。选用7200/23/38 A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。
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.
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