کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4675471 | 1347675 | 2009 | 6 صفحه PDF | دانلود رایگان |

Despite a slow beginning, coalmine bolting in China has got a rapid development in the past twenty years for pressing demand of deep mining, which has provided a sound technical support for safe and efficient coal production. In terms of technical characteristics, this process can be divided into three stages: “one- high” stage (high strength bolting), “two-high” stage (high strength and high pretension force bolting) and “three-high” stage (combination of high strength, high pretension force and high system stiffness bolting). Studies show that rational match of the “three- high” is safeguard to deal with the increasingly complicated deep mining situation. A whole set of strengthening bolting technology based on the “three-high” is put forward. The feasibility of its application under the most support-challenging condition-retained roadways is well tested by a typical engineering case.
Journal: Procedia Earth and Planetary Science - Volume 1, Issue 1, September 2009, Pages 41-46