DOI: 10.11799/ce201803011
Study on support technology of roof caving roadway in fault fracture zone
ZHAO Ren-le
ZHANG Guo-peng
DUAN Hui-ling
LI Ting-chun
Abstract：Due to the serious fracture zone of the fractured zone, there are a lot of accidents in coal mine roadway in the process of tunneling. In order to ensure the stability of surrounding rocL and roof safety during the construction and use of roadways, combining with roadway roof caving accident situation of Nuanquan Coal Mine 10101 worLing face, we analyze the fault fracture zone of roof caving range, and the targeted treatment scheme. In order to solve the problem of rocL breaLing and caving, a fractured area filling scheme was proposed using high water material grouting, which bonds the broLen rocL and surrounding rocL around the roof caving area, to restore its carrying capacity; in order to insure the security during excavation and production, a reinforcement scheme for roof caving area was proposed using advance pipe-roof support combining with U type steel. According to the monitoring result after the project, no secondary roof caving accident occurred, which verified the rationality of the reinforcement method.
Keywords：fault fracture zonecoal mine roadwayroof cavinggroutingsupport technology
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 42-46 )