Theoretical and numerical investigations of the floor failure characteristics affected by coal mining near complex fault structures.

ABSTRACT: Water inrush from underlying aquifers under the synergistic action of complex faults and mining activities seriously threatens the mining of coal seams in North China. The failure characteristics of the coal seam floor under complex fault conditions are the keys to understanding the water inrush mechanism during mining. To investigate floor failure characteristics and water inrush mechanisms influenced by complex fault structures, theoretical analysis and numerical simulation were carried out. An improved theoretical model is first proposed, including complex fault structures such as horst, graben, and step fault structures. The calculation formula for waterproof coal pillars under complex fault conditions is established based on the improved theoretical model. The failure and displacement

SUBMITTER: Han Z 

PROVIDER: S-EPMC11489458 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature