Surveyor observations of surface displacement under the influence of mining in the conditions of the Cheremkhovo coal deposit

Abstract

The Cheremkhovo deposit, both in terms of geological and mining operational conditions, differs significantly from other coal deposits of the USSR. In view of this, in relation to the specified conditions, it is not possible without special observations to make a confident conclusion about the nature of the process of surface displacement under the influence of mining. However, such issues as the speed of the subsidence process, the amount of surface subsidence, the size of subsidence angles, etc., are practically important issues, the clarification of which is necessary not only for the correct construction of safety pillars and the solution to the question of the possibility of building up previously undermined areas, but also for choosing a method for managing the roof and establishing a rational sequence for mining the lower and upper layers of the main formation of the Cheremkhovo field. In accordance with the above characteristics of the rate of attenuation of the process of surface displacement in the conditions of the Cheremkhovo deposit, it was recommended: 1. Allow the construction of wooden buildings in areas undermined by longwalls one year after the extraction of coal. 2. The construction of stone buildings is allowed after 1-2 years (depending on the capital of the building) after the excavation of coal under the site.