SURROUNDING ROCK PRETREATMENT METHOD FOR TBM PASSING THROUGH ROUND TUNNEL SECTION WITH HIGH ROCK-BURST RISK
作者： Chen Pingzhi , Zhang Chunsheng , Chu Weijiang , Zhou Yong , Hou Jing
DOI:
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摘要: The present invention relates to a surrounding rock pretreatment method for TBM (tunnel boring machine) passing through round tunnel section with high rock-burst risk. A technical solution of the is as follows: includes following steps: 1. determining area, wherein an area in which clear spacing between to-be-constructed and adjacent existing tunneling direction less than 2 times that diameter area: 2. performing controlled blasting; 3. injecting pressure water, selecting part blast holes I perform cyclic water injection pressurizing; 4, normal by TBM.
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