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Forward Modelling Method For The Subsidence Process Of A Foreland Basin Under A Point Load Condition With Inversion Constraints
Forward Modelling Method For The Subsidence Process Of A Foreland Basin Under A Point Load Condition With Inversion Constraints
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机译：具有反演约束的点载荷条件下前陆盆地沉降过程的正演模拟方法
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#$%^&*AU2020102157A420201015.pdf#####Abstract The present invention discloses a forward modelling method for the subsidence process of a foreland basin under a point load condition with inversion constraints, which comprises the following steps: establishing a general deflection equation of flexural deflection of a twodimensional elastic thin plate; optimizing boundary conditions; calculating extreme values of symmetric deflection and fractured deflection of the plate under the point load condition, including basin width, fore-bulge location and fore-bulge height; obtaining maximum deflection; using forward modelling and inversion in combination and for mutual verification, adjusting the parameters and establishing a final model for simulating the subsidence process of the foreland basin. The method provided by the present invention solves the problems that it is difficult to obtain the existing parameters in the model and a fourth-order differential equation has multiple solutions and is uncertain, provides a forward modelling method for the subsidence process of a foreland basin under a point load condition with inversion constraints, and obtains a forward model that is more in line with the real geological conditions, thereby simulates the subsidence process of a foreland basin more accurately.Drawings Accompanying the Description Effetiveelatic hickess Fleuaigdt elcin DelcinWa -oTz p___ o 2 1 mt aany oin 1.~~ ~Fg I'____1 1t -2-.- -1. 25 1,7t O21.7 2.1.00 2 1.25 2. .... 00 0.0 50.0 1 D0,0 150.0 200.0 25C.0 300.0 350.0 400 Flexural deflection of the basin under tectonic load Fig. 2 1/4
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