| With the construction of high speed railway,highway,submarine tunnel and larg-scale underground engineering of oil storage or gas storage in coast,geologic disaster always plays the main part of influencing construction and operation safty of tunnel and underground engineering,among this geologic disaster,underground water is one of the main factors,for example, karst cave,underground river,karst sink hole,karst muddy belts,water-saturated fracture zone and so on,all this can bring on difficulty and harm to construction and operation of tunnel and underground engineering .By all appearance,tunnel geological hazard forecasting plays an important part in avoiding this geological hazards,this is also a problem to tunnel construction. So,combination with the BP second expand gas-storage engneering of Zhuhai,deploy study on the whole-space Tem of detecting underground water.This thesis adopts the ansys as compute tool and consider whole-space effect to inversion.Because of the limited work face, only three spots are layed. Firstly,correctly parameter is confirmed according to compare data between survey and numerical simulation,then,adjust the distance from fracture zone to work face and compare data,when two data are consistent,the distributing of fracture zone is confirmed.Furthermore,this thesis compare and analyse the data between half-space and whole-space Tem by the ways of numerical simulation.the result show that the influence of the conductor behind work face cann't be ignored,and the whole-space inversion must be used when Tem is used for detecting in underground.
|
PDF Full Text Request