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Influence of mining operations on road pavement and sewer system selected case studies

Grygierek M., Kalisz P.

Journal of Sustainable Mining

2018

Vol. 17, iss. 2

56--67

Underground mining operations cause surface deformations which influence structures. A particular group of structures which are susceptible to the influence of mining operations are so-called “linear objects”, whose characteristic parameter is their length. Linear objects consist of, for example: roads, rails, sewers and water supply systems. Changes in the length of measurement bases (deformations) accompanying mining deformations and changes in ordinates, including the difference in subsidence (inclination), to a large extent determine the utility properties of the structures and create a significant nuisance when using them and even causing them to fail completely. It is worth emphasising that when applying proper preventive measures once continuous deformations have begun, it is possible to use the objects for a relatively long period of time. In the case of discontinuous deformations, the utility properties are significantly deteriorated, which most often leads to failures, significantly hastening the decision to conduct repair works. This article presents selected cases of the continuous influence of mining operations on a sewer system and of discontinuous deformations on a road pavement. The presented research and in situ observations may be useful in assessing, designing or re-building such structures in areas where mining operations are planned.

Numerical modelling of the impact of underground mining on pipelines. Part I – impact of continuous deformations

Kliszczewicz B.

Architecture Civil Engineering Environment

2014

Vol. 7, no. 2

51--60

Underground infrastructure systems located on the areas of mining impact are exposed to additional impacts related to continuous land deformation resulting from underground exploitation. Such impacts increase the failure rates of the systems. The work discusses the impact of respective deformation indicators on various types of systems, taking into account diverse material solutions for pipelines. The assumptions, scope and results of a 3D numerical analysis of a pipe-soil system model are also presented (Z_Soil acad. ver. 11.03). The analysis is considering a case where a piping is situated parallel to and perpendicular to the front of mining exploitation.

Sieci infrastruktury podziemnej zlokalizowane w rejonach wpływów górniczych narażone są na dodatkowe oddziaływania, związane z ciągłą deformacją terenu, będącą skutkiem podziemnej eksploatacji. Oddziaływania te wpływają na wzrost awaryjności sieci. W pracy omówiono wpływ poszczególnych wskaźników deformacji na różne rodzaje sieci, z uwzględnieniem zróżnicowanych rozwiązań materiałowych rurociągów. Przedstawiono także założenia, zakres i wyniki numerycznej analizy modelu układu rura-grunt (Z_Soil acad. ver. 11.03). W analizie tej rozpatrzono przypadek usytuowania rurociągu równolegle oraz prostopadle do frontu eksploatacji górniczej.