LongKou Beizao coal mine is the first mine which can excavate coal under the sea in our country. The sea area coal measure strata in Beizao coal mine is soft and cracked and the deformation of roadway is difficult to be controlled. This paper analyse deformation rule and stress field distributing rule of sea area soft roadway, through indoor experiment, local data observation and numbered analogue. The research result have important reference value to the settling the support problem of sea area roadway.
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