COAL GEOLODY&EXPLORATION

2009, v.37;No.211(01) 78-80

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The sampling technique analysis and improvement of drilling crumbs

XU Wenquan;ZHAO Enlai;MA Yankun;SONG Dazhao;BAI Huimin;XU Xiaoyang(Faculty of Safety Engineering;

Abstract:

As result of backward equipment and wrong operation,the forecast results become unreliable when the index of drilling yields is used in forecasting coal or rock outburst.The paper analyzed the main reason for those mistakes in the aspect of actual operation and proposed technological improvement on the basis of present equip-ment,and verification by experiments.Experiment showed that improved anti-burst sampling drilling rig improved significantly accuracy and efficiency.

Key Words: volume of drilling yields;index of drilling yields;multiple of drilling yields

Abstract:

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Foundation: 国家自然科学基金项目(50427401);; 国家重点基础研究发展计划(973计划)项目(2005CB221505);; 国家高技术研究发展计划(863计划)项目(2006AA06Z119);; 国家科技攻关计划项目(2005BA813B-3-09);; 教育部新世纪优秀人才支持计划项目(NCET-06-0477)

Author: XU Wenquan;ZHAO Enlai;MA Yankun;SONG Dazhao;BAI Huimin;XU Xiaoyang(Faculty of Safety Engineering;

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