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1篇 您的检索式：作者名="Oldham Robin"

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		题名	作者	年代	出处	被引量
	1	Void fill techniques for stabilizing roof conditions during longwall recovery显示文摘It has been proven that longwall faces can be moved safely and efficiently. However,abutment pressures and poor ground control conditions can halt operations and be hazardous to coal miners. Recently at a mine in Southwestern Pennsylvania,roof material collapsed above shields that created two large voids and caused major challenges for shield recovery. A unique,engineering solution was developed that utilized a modified concrete material to fill the voids,creating stability in the affected area. The many phases of this project included the construction phase,void pumping,cutting out,and bolting of the concrete material. This project eliminated the hazards associated with bolting the recovery face and removing shields in adverse conditions,making it possible for the mine operator to safely complete the longwall move.	Oldham Robin Dickerson Craig Mc Henry Rusty	2016	International Journal of Mining Science and Technology2016，26，1：	2

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