Abstract
The coal roadways with water spraying usually have large surrounding rock deformation or roof abscission layer, especially to the roadways with compound rock strata roof, which could lead to sudden roof caving accidents, so it is imperative to research the roof characters and the corresponding controlling methods. In this paper, we firstly analyze the main reasons and characters of the roof deformation or its stability failure with bolt and cable supporting, and then the mechanical properties of the roof are tested in the lab, which could afford detailed datum to the further analysis. Based on the comprehensive researching results of this complex roof, a set of measuring device for the value of water spraying in single roof hole is developed and then applied to a typical coal roadway. Finally, some effective controlling methods are put forward to prevent from the large deformation of the roadways.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
