Study: The faculty of geotechnology and management of enterprise

Speciality: Mining of mineral deposits

The theme of master's thesis: Research of features of co-operation of fastening of the mountain making of deep mines with a containing array at forming round making of area of the blasted breeds.

Scientific leader: Petrenko Yurij. He is doctor of technical sciences, professor.

          Accepted by Supreme Soviet of Ukraine the National power program attaches special significance to development of coal industry (the general volume of mining to 2010 year must attain 170 million tons in a year). Building is foreseen 20 new mines, completion of building of the second turn on 15 enterprises, reconstruction of 63 mines.

         Development of coal industry in Donbasse is accompanied by the increase of depth of mountain works, sections and general extent of the supported making. Only for the last 20 years mining volume on mines with in depth developments more than 700 meters grew in 2 times. For the same period middle bearing ability of krepy grew in 2,5 time, fastening cost in 2,3 time, and labour intensiveness in 3,7 time. However fasten attempts to provide maintenance-free maintenance of making for the account increase bearing capabilities positive results were not given. Annually extent of making being in the unsatisfactory state, is increased on the mines of Donbassa on 2-3%.

         At Remonte of making, related to replacement of elements fasten, the issues of breed are fixed in 92% cases. In a 55% weight of the produced breed on 20 – 250% exceeds bearing ability of permanent krepy. In this connection supposition is fully grounded, that exactly mass of the breed produced at repair is reason of violation of the operating state of the mountain making.

         Thus, perfection of methods of calculation of loading on arched pliable krep' taking into account influence on her of goafed breeds is a very actual task.

         Research of features of co-operation of fastening of the mountain making of deep mines was the purpose of this work with a containing array at forming round making of area of the blasted breeds.
For achievement of the put purpose the following tasks decided in-process:
1. Establishment of principal reasons of deformation of arched pliable krepy in the conditions of deep mines of Donbassa.
2. Establishment of dependence of parameters of vault of bringing down from the sizes of area of unresilient deformation around vyrabocurrent.
3. Development of method of calculation of loading on arched pliable krep' in the conditions of intensive collapsing pedigree array containing the mountain making.

         The practical value of this work consists in that the use of the developed method at the choice of parameters of krepy will allow substantially to reduce expenses on maintenance of making due to reduction of amount of repairs.