FIELD: construction.;SUBSTANCE: invention relates to construction, namely to tongue-and-groove enclosures or retaining walls, erected on sites with gravity free flow of ground water, in particular, and can be used to create sheet piling enclosures in trenches during repair works on main pipelines. Method of sheet piling erection during operations on main pipeline includes creation in soil of vertical guard elements in form of sheet piles with their arrangement along enclosed object in one row, series connection of adjacent vertical elements to each other by links, fixation of enclosure in soil and excavation of soil under protection guard to required depth, wherein vertical elements are made with length depending on depth of soil excavation. First, guide frame is assembled and fixed in place of sheet piling erection by racks clamping, installation of guide frame on them. Edging of enclosure is started with formation of one of angular sections of enclosure perimeter, adjoining vertical elements are arranged next to each other and interconnected detachably by means of locking elements "comb-holder" with closure of guard perimeter and forming perimeter of excavation by combination of vertical elements of row outside on perimeter of guide frame. Securing of enclosure in soil is performed by strictly vertical vibration dumping to dense soil, in front of which inner frame of required size is assembled, which is installed above axis of pipe. Required length of vertical elements depending on depth of recess is provided by their build-up in vertical, which is performed using dismountable connection by means of eye lugs fixed on sheet tongues, fixed by pin with cotter pins.;EFFECT: technical result consists in improvement of sheet piling safety, simplification of sheet piling assembly and disassembly.;2 cl, 11 dwg
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