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| NUMERICAL EXPERIMENTS OF DYNAMIC RESPONSE CHARACTERISTICS OF ROCK DRILLING ON STRATIFIED ROOF IN COAL ROADWAY |
| LIU Shaowei，FENG Youliang，LIU Dongliang |
| (School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo，Henan 454003，China) |
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Abstract Horizon combination as well as physico-mechanical characteristics severely influence the stability of rock bolting roof in coal roadway，and the drilling device of anchoring holes has different responses to different types of rock，which provides information of thickness and strength on rock. In order to overcome concealment problems of roof in coal roadway，design bolting parameters reasonably and prevent roof falling，numerical experiments about drilling characteristics on roof in coal roadway were carried out. Study shows that the drilling on roof in coal roadway is discontinuous and anchoring holes are deepened step by step like jump. Under the condition of homogeneous rock，the drilling speed from high to low is sandy mudstone，siltstone，mudstone and sandstone，while the resistance of bore bit from large to small is siltstone，sandstone，mudstone and sandy mudstone. Above indices are monitored by related instruments during drilling anchoring holes，which are very significant to distinguish the type and thickness of roof rock within the scope of anchoring holes in coal roadway.
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Received: 24 May 2013
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| [1] 李青锋，朱川曲，段 瑜. 预应力锚杆支护系统动力特征的数值模拟[J]. 煤炭学报，2008，33(7)：727–731.(LI Qingfeng，ZHU Chuanqu，DUAN Yu. The numerical simulation of prestress rockbolt supporting system dynamical characteristics[J]. Journal of China Coal Society，2008，33(7)：727–731.(in Chinese))
[2] 刘少伟. 锚杆支护煤巷冒顶危险的应力影响及工程应用[J]. 采矿与安全工程学报，2007，24(2)：239–242.(LIU Shaowei. Effect of stress on roof falling in coal drift supported by bolts and its engineering application[J]. Journal of Mining and Safety Engineering，2007，24(2)：239–242.(in Chinese))
[3] 贾明魁. 锚杆支护煤巷冒顶成因分类新方法[J]. 煤炭学报，2005，30(5)：568–570.(JIA Mingkui. A new way of genetic classification on roof falling of bolt supporting roadway[J]. Journal of China Coal Society，2005，30(5)：568–570.(in Chinese))
[4] 孟召平. 煤层顶板沉积岩体结构及其对顶板稳定性的影响[硕士学位论文][D]. 北京：中国矿业大学，1999.(MENG Zhaoping. Sedimentary rock structure of coal seam roof and its influences to stability[M. S. Thesis][D]. Beijing：China University of Mining and Technology，1999.(in Chinese))
[5] 贾明魁. 岩层组合劣化探测技术研究[J]. 中国矿业大学学报，2006，35(1)：44–48.(JIA Mingkui. Research on detecting technique for inferior strata combination[J]. Journal of China University of Mining and Technology，2006，35(1)：44–48.(in Chinese))
[6] 祝效华，罗 衡，贾彦杰.考虑岩石疲劳损伤的空气冲旋钻井破岩数值模拟研究[J]. 岩石力学与工程学报，2012，31(4)：754–761.(ZHU Xiaohua，LUO Heng，JIA Yanjie. Numerical analysis of air hammer bit drilling based on rock failure model[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(4)：754–761.(in Chinese))
[7] 孙金山，陈 明，陈保国，等. TBM滚刀破岩过程影响因素数值模拟研究[J]. 岩土力学，2011，32(6)：1 891–1 897.(SUN Jinshan，CHEN Ming，CHEN Baoguo，et al. Numerical simulation of influence factors for rock fragmentation by TBM cutters[J]. Rock and Soil Mechanics，2011，32(6)：1 891–1 897.(in Chinese))
[8] 步玉环，王瑞和，周卫东. 旋转射流破岩成孔规律研究[J]. 岩石力学与工程学报，2003，22(4)：664–668.(BU Yuhuan，WANG Ruihe，ZHOU Weidong. Study on rock drilling by swirling jet[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(4)：664–668.(in Chinese))
[9] 鄢泰宁. 岩石钻掘工程学[M]. 武汉：中国地质大学出版社，2009：17–33.(YAN Taining. Rock drilling and digging engineering[M]. Wuhan：China University of Geosciences Press，2009：17–33.(in Chinese))
[10] 屠厚泽，高 森.岩石破碎学[M]. 北京：地质出版社，1990：1–71.(TU Houze，GAO Sen. Theory of rock fragmentation[M]. Beijing：Geological Publishing House，1990：1–71.(in Chinese))
[11] 张 珂，王腾跃，孙 红，等. 全断面岩石掘进机盘形滚刀破岩模拟[J]. 沈阳建筑大学学报：自然科学版，2010，26(6)：1 209–1 218. (ZHANG Ke，WANG Tengyue，SUN Hong，et al. Simulation study on disc cutter of full face rock tunnel boring machine[J]. Journal of Shenyang Jianzhu University：Natural Science，2010，26(6)：1 209– 1 218. (in Chinese))
[12] 杨春雷. 钻头齿圈复合运动破岩系统仿真研究[硕士学位论文][D].成都：西南石油大学，2006.(YANG Chunlei. Simulation research on the rock breaking system of bit tooth-row composite locomotion[M. S. Thesis][D]. Chengdu：Southwest Petroleum University，2006.(in Chinese))
[13] ABAQUS Standrad version 6.5. User manual，theory manual[R]. Pawtucket：Hibbitt，Karlsson and Sorensen Incorporated，2005：15–28.
[14] 林铁军，练章华，孟英峰，等. 空气钻井中动态破岩有限元仿真研究[J]. 岩石力学与工程学报，2008，27(Supp.2)：3 592–3 597.(LIN Tiejun，LIAN Zhanghua，MENG Yingfeng，et al. Finite elements method study on dynamic rock breaking in air drilling[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 592–3 597.(in Chinese))
[15] 马德坤. 岩石与钻头的相互作用与井斜[J]. 西南石油学院学报，1983，5(3)：51–58.(MA Dekun. Mutual actions between rock and nit and wellborn deviation[J]. Journal of Southwest Petroleum Institute，1983，5(3)：51–58.(in Chinese)) |
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2014, Vol. 33 
