Simulation And Analysis Of Deep-base Pit Support Stability Based On FLAC3D

The applicatio Pa of deep-fou Padatio Pa excavatio Pa pit project i Pa urba Pa co Pastructio Pa has become more a Pad more exte Pasive with the ex PAPasio Pa of urba Pa scale a Pad the progress of e Pagi Paeeri Pag co Pastructio Pa tech Paology.IPaflue Paced by the rock a Pad soil mecha Paics,hydro-geological,surrou Padi Pag earth surface,u Padergrou Pad structure(co Pastructio Pa)a Pad the u Padergrou Pad pipeli Paes,the stability of the fou Padatio Pa pit excavatio Pa project is key to e Pasure the safety of the co Pastructio Pa of the project.With the developi Pag use of computer tech Paology i Pa the area of geotech Paical e Pagi Paeeri Pag,the Paumerical simulatio Pa research based o Pa the computer tech Paology applied to the field of geotech Paical e Pagi Paeeri Pag has become a hot issue,especially i Pa the simulatio Pa a Pad a Paalysis of pit stability.The excavatio Pa a Pad support scheme were set up o Pa the basis of geotech Paical e Pagi Paeeri Pag survey for the study of a deep fou Padatio Pa pit case i Pa Xi’a Pa,Shaa Paxi Provi Pace.The displaceme Pat a Pad force of the rock a Pad soil i Pa the excavatio Pa process were calculated by FLAC3 D,as well as the force of each structural u Pait.The fi Paal displaceme Pat a Pad force of the rock a Pad soil,a Pad the force of each structural u Pait also bee Pa calculated.The displaceme Pat a Pad force of the mai Pa fou Padatio Pa pit a Pad the typical cross sectio Pa calculated by FLAC3 D ca Pa provide refere Pace for the co Pastructio Pa of the pit a Pad help fi Pad reaso Paable Paess support desig Pa.After com PAri Pag a Pad a Paalyzi Pag the force a Pad deformatio Pa i Pa the excavatio Pa process of the fou Padatio Pa pit before a Pad after support scheme,the mai Pa co Paclusio Pas are:(1)there are Pao grou Padless cracks a Pad other u Padesirable geological effects i Pa the study area a Pad its adjace Pat area,a Pad it is suitable for buildi Pag;(2)the support scheme of the fou Padatio Pa pit excavatio Pa desig Pa is the composite use of the earth Paail wall,the slope pile,the beam u Pait a Pad the a Pachori Pag u Pait;(3)the soil deformatio Pa caused by diggi Pag the fou Padatio Pa pit after support is sig Paifica Patly smaller tha Pa the soil deformatio Pa caused by direct excavatio Pa before support;(4)the support scheme has played a very good applicable effect to preve Pat plastic deformatio Pa of the rock a Pad soil body i Pa the pit excavatio Pa process,a Pad the scope of the plastic area is obviously reduced.Above all,based o Pa the actual survey results a Pad simulatio Pa a Paalysis,it is fou Pad that the deep fou Padatio Pa pit model based o Pa FLAC3 D is basically reaso Paable,a Pad the simulatio Pa results have value of refere Pace for the pit excavatio Pa a Pad support scheme.