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叙述了淮南矿业集团丁集煤矿风井井筒地面预注浆工程施工工艺 ,介绍了钻探施工技术措施及高压注浆工艺 ,最后阐述了施工中的一些认识与体会
Describes the construction technology of pre-grouting in the well shaft of Dingji coal mine in Huainan Mining Group, introduces the technical measures of drilling construction and high-pressure grouting process, and finally expounds some understanding and experience in construction