| In the past 20 years, especially since"activity of 10 years that world reduced natural disasters "is launched, in the world to come down research and prevention and cure of calamity unprecedentedly active, the calamity prevent and cure technology get considerable development. In landslide mechanism, prevent and cure measure,etc. respect go on and further investigate, adopt a lot of new theory, new method and new technology, It include collateral, feedback, intelligent and green,etc. four major characteristics. Prevention and cure project measure got further development on the basis of previously measures to perfecting too, Concrete to display in heavy, anchor and miniature, namely large anti-slide pile, anchor cable and mini-pile.Project practice indicate , anti-slide pile solve some difficult project rapidly, security, economy, so develop very fast. Our country in middle period the sixties the 20th century, in Chengdu-Kunming Railway Line construction, study and design big section anti-slide pile of success at first, Because it resist slide heavy ability, destroy slide body stability little , it is convenient to construct, soon in managing extensive application. Anti-slide pile known as " heavy- duty weapon" , make it possible to control large-scale landslide. In consult a large amount of documents and materials both at home and abroad relevant to landslide controlling, find the document of economic appraisal of anti-slide pile very little, analysis of anti-pile costs and relevant factors did not see reports yet. On the basis of investigate a large number of project, selected representative 12 application anti-slide pile instance. Z and relevant factors are analyzed . Relevant factors is (the rock soil unit weight of the slide body); C and ( cohesive force and interior friction angle of slide surfaces); ', ' and m( slide rock soil unit weight, interior friction angle and proportion coefficient of coefficient of slide bed); H( discrepancy in elevation of front edge and back edge of landslide); H/L(ratio of H and slide surface projection length); 9 and 1( slope gradient and the length of platform of back edge); h1(length of bear the weight of anti-slide pile); h2/h1 (ratio of anchor portion length and h1); S and h(anti-slide pile interval and height of anti-slide pile section); b/h(ratio of anti-slide pile wide and height). And with mathematical statistics method set up mathematical model of economic evaluation of anti-slide pile. For confirm project and fast to appraise economy their offer scientific basis rationally. Through the correlation analysis of Z and it's relevant factors , arrange in an order and can know according to related degree each related factor impact on Z size successively: h1 > >C>h2/h1> '> > ' >S>h>H > >b/h>H/L>m>l.Adopt the way of regression progressively and analyse Z and its influence factor , offer numerical value of F, for 4.54, set up mathematical model of economic evaluation of anti-slide pile.: Z=5.78762-0.06248C-0.74356 - 0.11192 '+0.04569 + 1.79570 h1-0.02199h2/h1. Partial correlation coefficient of Z to C, , ', , h1 and h2/h1 are respectively: -0.954, -0.988, -0.875,0.826,0.999,0948. Can see Z and C, , ' we negetive correlation ; Analysis result show slide surface mechanics index C, that bring exert a tremendous influence. Propose and according to characteristic and stage of landslide, adopt different tests, combine the result of the test, inverse analysis and experience data to fix synthetically.Because the computing method of anti-slide pile interval S yet raw, design main basis experience make at present, Propose that can regard it as an interval to can form the span joined naturally while soil and stone surveyed becomes and joins the function materials naturally . Clarify that the critical interval still need to carry on a large number of observings and model experiment of scene. Propose and go on in fact testing cards to various kinds of landslide thrust distribution map type of body, Fix the distribution map type of corresponding to reality...
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