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- W2997806954 abstract "The pre-splitting blasting technology is the core of the roof-cutting pressure relief technology(RPRT), which is the key to achieve the transformation from the long beam to the short beam roof structure. And determining the reasonable charge is the key to the successful implementation of pre-splitting blasting. Under the condition of composite roof, the charge control is difficult due to the complexity of strata structure: too little charge will easily induce bed separation in the working face, and the deformation and instability of roadway surrounding. On the other hand, the roof strata in the roadway will be damaged by over-charging, which will result in roof caving potential. In order to ensure the stability of roadway surrounding rock, the roof rock properties were analyzed to determine the reasonable charge under different roof rock conditions. Combined with the field monitoring of a case study with optimized charge, the maximum roof-to-floor convergence and ribs convergence is 259 mm and 191 mm, by applying the reasonable charge, and the filed test showed good ground controlling effect." @default.
- W2997806954 created "2020-01-10" @default.
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- W2997806954 date "2019-10-01" @default.
- W2997806954 modified "2023-09-24" @default.
- W2997806954 title "Study on the Charge of Pre-splitting Blasting Under the Condition of Composite Roof" @default.
- W2997806954 doi "https://doi.org/10.1109/phm-qingdao46334.2019.8943019" @default.
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