Porotnikov V. Substantiation of strengthening parameters by tubular anchors of weak rocks of underground working.

The dissertation is devoted to the question of increase of strengthening efficiency of weak rocks by anchor fastening. The established laws of manage-ment in parameters of power interaction of tubular anchors TA2 with rock walls of bolt hole are protected by regulation of mechanical characteristics of a mate-rial of a filler of internal emptiness of a metal pipe. On the basis of the devel-oped method of calculation of tensely - deformed conditions (TDC) of system "tubular anchor - walls of hole" are established new laws of field of pressure communication in system with mechanical characteristics of a filler. Criteria of TDC optimization of system are formulated and dependences by calculation of necessary parameters of filler, which provide achievement of a highly effective operating mode of anchor TA2 in weak rocks, are revealed. The scientific sub-stantiation of expediency application is carried out as a filler of the sand-cement mix with addition extending Portland cement (EPC), on a basis of experimen-tally established dependences of mechanical characteristics of a filler from struc-ture of a mix and the developed method of a choose of its rational compounding. The lead complex of mine researches of the tension power characteristic of tubu-lar anchors that confirms adequacy to real conditions of the offered model of in-teraction of anchor TA2 with weak rocks. The developed design procedure of rational parameters of anchor TA2 and a complex schedule concerning operative calculation performance. The basis of work displayed in one monograph, six ar-ticles and 3 report on the international symposiums and conferences.