Effect of little fault in working face on water conducted fissure height
HUANG Bing-xiang
LIU Chang-you
XU Jia-lin
Abstract：Overlying strata fracture law and evolutionary process of water conducted fissure in little fault (fault throw less-than 5m) zone were researched by similar simulation experiment. The effect law of little fault in working face to water conducted fissure height was obtained. When working face advances near to normal fault from lower plate to upper plate, rotating deformation of lower plate strata induces fault surface in the ahead upward side of wall closing, and fault surface in the rear upward side of wall opening. Fault fissure experience the process of opening-closing-opening-closing along face advancing. Water conducted fissure height of normal fault face individual increase 40% and 61% than that of upper and lower plates. When working face through reversed fault from upper plate to lower plate, the pressure and pushing force of upper strata should be major controlled. Periodic fracture distance of roof strata becomes short after face enter lower plate, and roof weighting become frequent. Upper plate mainly presents slipping along fault surface. Water conducted fissure height of reversed fault is basic equal to that of upper and lower plates.
Keywords：working facelittle faultwater conducted fissure heightsimilar simulation
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1316-1321 )