B.V. Laptev, Dr. Sci. (Eng.), Senior Researcher, laptevbv@mail.ru STC «Industrial Safety» CJSC, Moscow, Russia
According to the methods stated in the Methodological basis of calculation of separation pillars and identification of the bump hazardous situations when developing blanket deposits, two mining situations are considered, and the degree of hazard of the separation (barrier) pillars, and the pillars adjoining the frontal line of the second working is assessed. With regard to the considered conditions, for example, of the Verkhnekamsk potash mines, the required assumption (condition) is that all the other pillars, except for the considered, in the developed space at a certain section have to transfer to an out-of-limit state, they shall not have the bearing capacity, and the roof rocks over the developed bed — hang.
1. Trubeckoj K.N., Bronnikov D.M., Kuznecov S.V., Trofimov V.A. Methodological basis of calculation of separation pillars and identification of the bump hazardous situations when developing blanket deposits. Gornyj vestnik = Mining Bulletin. 1995. № 4. pp. 12–21.
2. Petuhov I.M., Linkov A.M. Mehanika gornyh udarov i vybrosov (Mechanics of Rock Bumps and Outbursts). Moscow: Nedra, 1983. 175 p.
3. Glushko V.T., Vinogradov V.V. Razrushenie gornyh porod i prognozirovanie projavlenij gornogo davlenija (Destruction of Rocks and Forecasting of Manifestations of Rock Pressure). Moscow: Nedra, 1982. 193 p.
4. Laptev B.V. On the rock-bump hazard of the saliferous rocks at the Verkhnekamsk deposit. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2001. № 5. pp. 29–31.
