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| The application of Pre-splitting blasting technology in the end of mining at fully mechanized caving coal face |
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Received:February 21, 2017
Revised:March 02, 2017
Accepted:March 03, 2017
Published Online:August 22, 2017
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| DOI： |
| KeyWord:the end of mining at Fully mechanized caving coal face;mine pressure behavior;Pre-splitting blasting technology;strata control |
| Author | Institution |
| LIU Hui-jie |
China Coal Technology and Engineering Group Chongqing Research Institute |
| HU Qiang-qiang |
Shandong Coal Technology Services Ltd |
| SUN Kai |
Shandong coal Taishan sanatorium |
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| Abstract: |
| To avoid large roof falling at the same time in the end of mining at fully mechanized caving coal face,we predicted the motion law of the roof on the basis of summarizing the previous mine pressure regularity,then applied Pre-splitting blasting technology in working face roof,then studied the effect of pre-splitting blasting methods on strata control.The results showed that the study had achieved the expected goals ,the roof falled at three times and was divided into five pieces after the application of Pre-splitting blasting technology. |
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