Issued The Maximum Potential Earthquake Seismogenic Structure Determined

In recent years, boosting country's economy raised the scarce of electric power supply. Implementsof new energy and technology brought a stride of nuclear plant constructions. For attachingimportance to nuclear safety, government forcedly regulated that earthquake hazard assessment(SHA) was needed in nuclear plant feasibility study. Accordingly, attentions were being paid tomaximum potential earthquake (M_max) which was a important parameter in determination method inSHA.Focus on how to make sure the parameter; author did some researches as follows:Firstly, investigations about M_max status quo have been completed. Based on available nuclear plantsSHA reports, two major issues were extracted: 1, expert experience dominated M_max judgment,especially in lower magnitude steps, but experts' knowledge can hardly be saved and describedquantity ,so may bring confuse to other consulters. 2, the elements which influenced result wereabused to some extent. No a series of flawless index system existed.Secondly, through paper, some confirmed factors relative to M_max magnitude were found out,combined with project practice, author established the M_max index system. Because of so manyelements worked on M_max, multi-considering entire index was important. These indexes weredivided into tow sorts according to their variable property—quantity able or quality able;Simultaneously, index comments set was build.Thirdly, we researched some methods to weight index, eventually choose Analytic Hierarchy Process(AHP) as our model, and computed the weightings by inquiring experts. Making use of evaluationmodel mentioned by this paper, Binhai earthquake structure was evaluated on its M_max,At last, a new statistical relationship used in M_maxjudgments was build for we got some new data.Major achievements in this article:◆Review nuclear plant reports done in past twenty years, list M_max information, provide afoundation for later researchers into this field, and discuss characters of variable M_maxmagnitude steps.◆Build the M_max index system: chosen indexes possess of both science and projects backgroundwhich can be applied in future SHA projects. Through them, consulters also enable to revisetheir evaluations, missing or weakening some important M_max factors will become visible.◆Present application of AHP into M_max, and analysis its theory and process detailedly. The ideacan also be used in other parts of SHA.◆Upgrade magnitude to fault length relationship which has extensive utility in SHA.