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| Research of supporting technology of concrete-filled steel tubular composite support at intersection point of soft rock roadways |
| WANG Jun1，2，3，LU Wenyan1，4，XING Luyi1，YANG Guang1，WANG Zhikang2 |
(1. School of Civil Engineering，Shandong Jianzhu University，Jinan，Shandong 250101，China；2. China Railway 14th Bureau Group Co.，Ltd.，Jinan，Shandong 250101，China；3. Key Laboratory of Structural Reinforcement and Underground Space Engineering，Ministry of Education，Jinan，Shandong 250101，China；4. Shandong Rail Transit Survey and Design Institute
Co.，Ltd.，Jinan，Shandong 250001，China) |
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Abstract In order to solve the problem of intersection support of expansive soft rock roadways，taking the intersection point of the main inclined shaft and #2 coal feeder maintenance connecting roadway of Qingshuiying coal mine as the engineering background，and based on the analysis of the geological characteristics and deformation causes of the intersection，the repairing support design based on rectangular concrete-filled steel tube composite support is proposed. Through the numerical simulation analysis of the support bearing capacity，it is found that the flexural bearing capacity of the straight beam section of the composite support is insufficient，which affects the overall support effect. The bending test of the concrete-filled steel tubular straight beam is carried out. The results show that the welding bending round steel in the tensile area of the straight beam can effectively improve the bearing capacity of the concrete-filled steel tubular straight beam. The structure of the rectangular composite support is optimized with f50 mm bending round steel. The simulation analysis shows that the overall
bearing capacity of the optimized composite support is increased by 36%. In engineering practice，the support scheme based on the rectangular concrete-filled steel tube composite support has no obvious deformation in three years of using，and the intersection point of the expansion soft rock roadway remains stable for a long time. The research has an important guiding significance for the intersection point support under similar conditions.
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[1] 程 桦，蔡海兵，荣传新，等. 深立井连接硐室群围岩稳定性分析及支护对策[J]. 煤炭学报，2011，36(2)：261–266.(CHENG Hua，CAI Haibing，RONG Chuanxin，et al. Rock stability analysis and support countermeasure of chamber group connected with deep shaft[J]. Journal of China Coal Society，2011，36(2)：261–266.(in Chinese))
[2] 王 岩，梁 冰，高 宏. 小凌河矿回采巷道交岔点支护技术研究[J]. 安全与环境学报，2015，15(2)：83–87.(WANG Yan，LIANG Bing，GAO Hong. Research on the support technique of mining gateway intersection in Xiaolinghe mine[J]. Journal of Safety and Environment，2015，15(2)：83–87.(in Chinese))
[3] 孙晓明，王 冬，缪澄宇，等. 南屯煤矿深部泵房硐室群动压失稳机制及控制对策[J]. 煤炭学报，2015，40(10)：2 303–2 312.(SUN Xiaoming，WANG Dong，MIAO Chengyu，et al. Research on dynamic pressure instability mechanism and control countermeasure of deep pump room and chamber group in Nantun coal mine[J]. Journal of China Coal Society，2015，40(10)：2 303–2 312.(in Chinese))
[4] 林惠立，石永奎. 深部构造复杂区大断面硐室群围岩稳定性模拟分析[J]. 煤炭学报，2011，36(10)：1 619–1 623.(LIN Huili，SHI Yongkui. Simulation on stability of surrounding rock of large section chambers in deep structural complex areas[J]. Journal of China Coal Society，2011，36(10)：1 619–1 623.(in Chinese))
[5] 郭志飚，王 炯，蔡 峰，等. 煤矿深部Y型大断面交岔点双控锚杆支护技术及工程应用[J]. 岩石力学与工程学报，2010，29(增1)： 2 792–2 798.(GUO Zhibiao，WANG Jiong，CAI Feng，et al. Application and double-direction control bolt support technology of large spany-type intersection in deep coal mine[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：2 792–2 798.(in Chinese))
[6] 杨仁树，薛华俊，郭东明，等. 复杂岩层大断面硐室群围岩破坏机制及控制[J]. 煤炭学报，2015，40(10)：2 234–2 242.(YANG Renshu，XUE Huajun，GUO Dongming，et al. Failure mechanism of surrounding rock of large section chambers in complex rock forma-tions and its control[J]. Journal of China Coal Society，2015，40(10)：2 234–2 242.(in Chinese))
[7] 孟益平，祝金龙，郭家标. 复杂条件下交岔点巷道支护技术研究[J]. 地下空间与工程学报，2015，11(增2)：585–590.(MENG Yiping，ZHU Jinlong，GUO Jiabiao. Research on the support technology of crossing roadways in complicated conditions[J]. Chinese Journal of Underground Space and Engineering，2015，11(Supp.2)：585–590.(in Chinese))
[8] 郭志飚，张跃林，王 炯. 深部立体交叉巷道破坏机制及控制对策研究[J]. 中国矿业，2015，24(3)：150–153.(GUO Zhibiao，ZHANG Yuelin，WANG Jiong. Study on failure mechanism and control measure of deep intersecting roadway[J]. China Mining Magazine，2015，24(3)：150–153.(in Chinese))
[9] 何满潮，李国峰，刘 哲，等. 兴安矿深部软岩巷道交岔点支护技术[J]. 采矿与安全工程学报，2007，(2)：127–131.(HE Manchao，LI Guofeng，LIU Zhe，et al. Countermeasures aiming at the support for crossing roadway of deeply buried soft rocks in Xing¢an coal mine[J]. Journal of Mining and Safety Engineering，2007，(2)：127–131.(in Chinese))
[10] 高延法，王 军，王 波. 深井软岩巷道钢管混凝土支架支护技术[M]. 北京：科学出版社，2017：214–215.(GAO Yanfa，WANG Jun，WANG Bo. Supporting technology of steel tubular concrete support for deep soft rock roadway[M]. Beijing：Science Press，2017：214–215.(in Chinese))
[11] 曲广龙. 钢管混凝土支架结构抗弯性能研究及应用[博士学位论文][D]. 北京：中国矿业大学，2013.(QU Guanglong. Research on flexural performance of concrete-filled steel tubular support and its application[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology(Beijing)，2013.(in Chinese))
[12] 孟德军. 杨庄矿软岩巷道钢管混凝土支架支护理论与技术研究[博士学位论文][D]. 北京：中国矿业大学(北京)，2013.(MENG Dejun. Research on support theory and support technology of concrete-filled steel tubular support of soft rock roadway in Yang Zhuang coal mine[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology(Beijing)，2013.(in Chinese))
[13] 王 军. 钢管混凝土圆弧拱的抗弯力学性能实验研究与工程应用[博士学位论文][D]. 北京：中国矿业大学(北京)，2014.(WANG Jun. Research on mechanical properties of anti-bendingt for Concrete filled Steel Tube circular arch and its application[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology(Beijing)，2014.(in Chinese))
[14] 王 军，胡存川，左建平，等. 断层破碎带巷道底臌作用机制与控制技术[J]. 煤炭学报，2019，44(2)：397–408.(WANG Jun，HU Cunchuan，ZUO Jianping，et al. Mechanism of roadway floor heave and control technology in fault frac-ture zone[J]. Journal of China Coal Society，2019，44(2)：397–408.(in Chinese))
[15] LIU D，ZUo J，WANG J，et al. Bending failure mechanism and strengthening of concrete-filled steel tubular support[J]. Engineering Structures，2019，198(Nov.1)：109449.1–109449.20.
[16] LIU D J，ZUO J P，WANG J，et al. Large deformation mechanism and concrete-filled steel tubular support control technology of soft rock roadway—A case study[J]. Engineering Failure Analysis，2020，116：104721.
[17] 何晓升，刘珂铭，张 磊，等. 极软岩巷道交岔点钢管混凝土支架结构设计与应用[J]. 煤炭学报，2015，40(9)：2 040–2 048.(HE Xiaosheng，LIU Keming，ZHANG Lei，et al. Structural design and application of concrete-filled steel tube support at extremely soft rock roadway intersection[J]. Journal of China Coal Society，2015，40(9)：2 040–2 048.(in Chinese))
[18] 王 军，黄万朋，左建平，等. 深井交岔点围岩流变扰动效应及钢管混凝土组合支架支护技术研究[J]. 岩石力学与工程学报，2018，37(2)：461–472.(WANG Jun，HUANG Wanpeng，ZUO Jianping，et al. Rheological perturbation effect of rock and combined support of concrete filled steel tubes in deep coal mine roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(2)：461–472.(in Chinese))
[19] 中华人民共和国国家标准编写组GB50017—2017 钢结构设计规范[S]. 北京：中国建筑工业出版社，2017.(The National Standards Compilation Group of People¢s Republic of China. GB50017—2017 Design code for steel structures[S]. Beijing：China Architecture and Building Press，2017.(in Chinese))
[20] 蔡绍怀. 现代钢管混凝土结构[M]. 修订版. 北京：人民交通出版社，2007：15–26.(CAI Shaohuai. Modern steel tube confined concrete structures[M]. Revised ed. Beijing：China Communications Press，2007：15–26.(in Chinese))
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2022, Vol. 41 
