Shotcrete-Bolts Supports And Protects Reasonable Opportunity Research In Soft-Tunnel

This article embarks from the project actual need, Best supports and protects the opportunity was earnest studied in soft-tunnel,The scientific analysis the influence effect about different supported and protected the opportunity to restrain the distortion to the hole room adjacent formation . First Restrains the distortion from the adjacent formation to embark Analyzed the soft crag adjacent formation distortion characteristic, the proof adjacent formation has restrained the characteristic which the distortion and the endogenic force transformed, and in this foundation, carried on the artificial district to the adjacent formation, this provided for afterwards the adjacent formation supporting capacity determination has been convenient.Next, in detail proves the soft grotto room best to support and protect the opportunity several definite methods, and produces the adjacent formation from the bearing capacity, the anchor spurts supports and protects the strength the definite method, in this foundation the law, produces the determination adjacent formation from the bearing capacity theory method.Finally, according to the first two parts of analyses proof, uses the ANSYS numerical analysis platform, considered a construction step of foreword, the job practice, determined best supports and protects the opportunity, and produces best supports and protects under the opportunity condition the adjacent formation endogenic force, the distortion and the plastic area and so on the change characteristic. Main research results: studied the influence adjacent formation to restrain the distortion the factor; proposed best supports and protects the opportunity the definite method; acts according to best supports and protects the opportunity theory, the use value simulation method, produced under the hole room different operating mode condition reasonably to support and protect the opportunity.