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2. 发明专利

JP5319618B2 Ground situation prediction method and the tunnel excavation method 有权
公开(公告)号：JP5319618B2
公开(公告)日：2013-10-16
申请号：JP2010145208
申请日：2010-06-25
申请人：大成建設株式会社
发明人：智幸青木 , 一雄坂井
IPC分类号： E21D9/00 , G01C15/00
摘要： PROBLEM TO BE SOLVED: To provide methods for predicting natural ground and drilling a tunnel capable of drilling a tunnel by simply predicting natural ground situation ahead of a working face through a daily construction management. SOLUTION: The present invention includes the works of: installing an inclinometer 11, after drilling a tunnel T to a first working face K1, on a top end section of the tunnel with a distance a in a direction from the first working face K1 toward a tunnel entrance side; measuring a first inclination angle θ 1 at the top end section of the tunnel with the inclinometer 11 after drilling for a distance b ahead of the first work face K1; installing a second inclinometer 12, after drilling to a second working face K2 further ahead of the first work face K1, on the top end section of the tunnel with a distance a in the direction from the second working face K2 toward the tunnel entrance; and measuring a second inclination angle θ 2 at the top end section of the tunnel with the inclinometer 12 after drilling the distance b ahead of the second work face K2. Then, natural ground situation ahead of the second work face K2 is predicted by comparing the first inclination angle θ 1 and the second inclination angle θ 2 . COPYRIGHT: (C)2012,JPO&INPIT

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