Nappe structure＇s kinetic features and mechanisms of action to coal and gas outburst
Abstract：The common character of thrust structure and gravity sliding is that there has a detachment plane with low strength and high shearing strain, which separates the upper wall and footwall which with different mechanical property and strain characteristic. The role of nappe structure for coal and gas outburst is thought 2 ways：（!） the compression during nappe structure formation makes the coal structure destroyed, some time is whole layer included, and other is at structural plane. So the soft coal is extensively developed;（~） the compressive stress environment and strata thicken effect make a good condition for gas storage. Low-angle main slide fracture （most is reverse fault or overthrust fault） always forms a better gas closed system and it controlls gas storage. Structural with compression character derived by nappe structure form gas closed system, too. So the mechanisms of action of nappe structure to coal and gas outburst is that creating the material foundation：large quantity gas and soft coal for coal and gas outburst.
Keywords：nappe structurecoal and gas outburstkinetic modeltectonic coal
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 247-252 )