CHANGING IN THE PHYSICAL PARAMETERS OF DUMPS OF THE COAL-MINING INDUSTRY OF KANSK-ACHINSK (SIBERIAN) COAL FIELD AND POSSIBILITY OF THEIR REMEDIATION

摘要

While opencast mining of coal a large amount of dumps consisting of surface rocks, coal and other materials are formed. In the Kansk-Achinsk brown coal field the disposal areas occupy a large territory. The result of this is the loss of the agricultural and forest lands. The dumps consist of technogenic rocks, whose properties are differed from the properties of natural rocks. Further use of such disturbed lands is impossible without their remediation with the use of different plant species. The remediation of dumps cannot be successful without accounting changes in their physical properties in time. Our studies showed that the properties of technogenic rocks change in a similar way independently of the way of their formation. The following parameters change: skeleton density, humidity, the angle of internal friction, cohesion, the modulus of deformation. For the technogenic rocks of dumps it is possible to distinguish the stage of progressive lithogenesis (about 5 years) and then the stage of regressive lithogenesis (about 20 years).