Method for determining width of half-coal-rock gob-side entry driving coal pillar based on basic roof fracture position

• Main Authors: GAO LIN, XU SHUAI, WANG YONGYIN, LIU PING, LIU PENGZE, YAN LING, MA ZHENQIAN, ZHAN XINYU
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention provides a method for determining the width of a half-coal-rock gob-side entry driving coal pillar based on a basic roof fracture position, and the method comprises the steps: carrying out a physical similar simulation test of a fracture position of an overlying basic roof of a gob-side half-coal-rock roadway of a gently inclined coal seam based on geological condition parameters; a mechanical model of the overlying strata structure of the gob-side half coal-rock roadway of the gently inclined coal seam is established, a theoretical calculation formula of the fracture position of the overlying basic roof of the gob-side half coal-rock roadway of the gently inclined coal seam is determined through mathematical analysis, field actual measurement is carried out, theory and practice are combined, actual measurement is combined, the theoretical formula is perfected, and the fracture position of the overlying basic roof of the gob-side half coal-rock roadway is determined. The fracture position of the