钻井法快速凿井高强井壁结构设计优化与应用
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摘要
基于高强井壁结构设计参数在深厚冲积层钻井法快速凿井中的重要性,探讨了双层钢板高强混凝土复合井壁的设计优化方法.采用相似理论设计模型试验,实测得到了井壁变形和极限承载力,研究了该种井壁结构的受力机理.结果表明:混凝土在井壁结构中处于三轴受压应力状态,其抗压强度提高了2.53～2.72倍.根据模型试验结果和现行混凝土结构设计规范中关于多轴强度验算的要求,提出了该种井壁结构的设计优化方法,并应用于朱集西煤矿矸石井钻井井筒,井壁厚度减少16.7%,使得该井能够采用"一钻成井"工艺快速施工.工程实测表明井壁结构中混凝土环向应变最大值为-463.1×10~(-6),远小于混凝土极限应变值,说明设计优化后的井壁结构安全可靠.
Based on the importance of high strength shaft lining structural design parameters in rapid drilling of deep alluvial drilling methods, the design optimization method of double-layer steel plate high strength concrete composite shaft lining structure was discussed. The similarity theory design model test was used to obtain deformation and ultimate bearing capacity of the shaft lining, and the stress mechanism of the shaft lining structure was studied. The results show that concrete is in three axis compression stress state in shaft lining structure, and its compressive strength is increased by 2.53—2.72 times. According to the results of model test and the requirements for checking calculation of multiaxial strength in concrete structure design code, an optimization method for design of the shaft lining structure is proposed and applied to drilling shaft of Zhujixi gangue shaft. The thickness of shaft lining is reduced by 16.7%, which ensured that shaft can be quickly constructed using the one drilling and forming process. Engineering actual measurement shows that the maximum circumferential strain of concrete in shaft lining structure is-463.1×10~(-6), which is much smaller than limit strain value. It shows that the optimized shaft lining structure is safe and reliable.
Based on the importance of high strength shaft lining structural design parameters in rapid drilling of deep alluvial drilling methods, the design optimization method of double-layer steel plate high strength concrete composite shaft lining structure was discussed. The similarity theory design model test was used to obtain deformation and ultimate bearing capacity of the shaft lining, and the stress mechanism of the shaft lining structure was studied. The results show that concrete is in three axis compression stress state in shaft lining structure, and its compressive strength is increased by 2.53—2.72 times. According to the results of model test and the requirements for checking calculation of multiaxial strength in concrete structure design code, an optimization method for design of the shaft lining structure is proposed and applied to drilling shaft of Zhujixi gangue shaft. The thickness of shaft lining is reduced by 16.7%, which ensured that shaft can be quickly constructed using the one drilling and forming process. Engineering actual measurement shows that the maximum circumferential strain of concrete in shaft lining structure is-463.1×10~(-6), which is much smaller than limit strain value. It shows that the optimized shaft lining structure is safe and reliable.
引文
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[22] 任彦龙,杨维好,韩涛.基于不同强度准则的井壁极限承载力研究[J].中国矿业大学学报,2011,40(4):540-543.REN Yanlong,YANG Weihao,HAN Tao.Study of the ultimate bearing capacity of a shaft lining based on different failure criteria[J].Journal of China University of Mining & Technology,2011,40(4):540-543.
[23] 韩涛,杨维好,任彦龙,等.钢骨钢纤维高强砼井壁水平承载特征的计算和试验[J].中国矿业大学学报,2012,41(2):205-211.HAN Tao,YANG Weihao,REN Yanlong,et al.Numerical and experimental model studies of the horizontal bearing properties of shaft linings of encased steel or steel fiber reinforced,high strength concrete[J].Journal of China University of Mining & Technology,2012,41(2):205-211.
[24] YAO Z S,CHENG H,RONG C X.Research on stress and strength of high strength reinforced concrete drilling shaft lining in thick top soils[J].Journal of China University of Mining & Technology,2007,17(3):432-435.
[25] O’SHEA M D,BRIDGE R Q.Design of circular thin-walled concrete filled steel tubes[J].Journal of Structural Engineering,ASCE,2000,126(11):1295-1303.
[26] 罗丹旎,李庆斌,胡昱,等.基于统一强度理论的高强混凝土强度准则[J].水利学报,2015,46(1):74-82.LUO Danni,LI Qingbin,HU Yu,et al.Strength criterion for high-strength concrete based on the unified strength theory[J].Shuili Xuebao,2015,46(1):74-82.
[27] 中华人民共和国国家标准编写组.混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2015:216-220.The National Standards Compilation Group of People’s Republic of China.Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture & Building Press,2015:216-220.
[28] 杨海朋,白冰,聂庆科.竖井井壁竖向附加力的理论计算方法[J].北京交通大学学报,2014,38(6):100-105.YANG Haipeng,BAI Bing,NIE Qingke.Theoretical study on shaft wall of vertical additional force[J].Journal of Beijing Jiaotong University,2014,38(6):100-105.
[2] 杨仁树,陈骏.立井施工装备与技术发展现状和展望[J].建井技术,2015,36(2):1-4.YANG Renshu,CHEN Jun.Development status and prospects of mine shaft construction equipment and technology[J].Mine Construction Technology,2015,36(2):1-4.
[3] 刘志强.机械井筒钻进技术发展及展望[J].煤炭学报,2013,38(7):1116-1122.LIU Zhiqiang.Development and prospect of mechanical shaft boring technology[J].Journal of China Coal Society,2013,38(7):1116-1122.
[4] 陈远坤,刘志强,赵时运,等.“一扩成井”钻井法凿井新技术在袁店二矿的应用[J].建井技术,2011,32(2):21-23.CHEN Yuankun,LIU Zhiqiang,ZHAO Shiyun,et al.Application of the new drilling technique for drilling of "One expansion well" in Yuandian two mine[J].Mine Construction Technology,2011,32(2):21-23.
[5] 刘志强,吴玉华,王从平,等.钻井法凿井“一钻成井”工艺[J].建井技术,2011,32(2):8-10.LIU Zhiqiang,WU Yuhua,WANG Congping,et al.The new drilling technique of "One expansion well"[J].Mine Construction Technology,2011,32(2):8-10.
[6] WERNER B,MARTIN R.Mechanised shaft sinking methods for hard and medium strength rock[C]//3rd International Conference on Shaft Design and Construction.London:T&T the Official Publication of the British Tunneling Society,2012:15-17.
[7] 丁明,栾振辉.钻井法凿井快速钻进系统[J].建井技术,2015,36(4):51-55.DING Ming,LUAN Zhenhui.Rapid drilling system of mine shaft sinking with mine shaft full face drilling method[J].Mine Construction Technology,2015,36(4):51-55.
[8] 刘志强.矿山竖井掘进机凿井工艺及技术参数[J].煤炭科学技术,2014,42(12):79-83.LIU Zhiqiang.Mine shaft sinking technique and technical parameters of mine shaft excavator[J].Coal Science and Technology,2014,42(12):79-83.
[9] 王新,荆国业,武士杰,等.新型破岩滚刀高压密封结构设计及应用[J].建井技术,2011,32(2):11-14.WANG Xin,JING Guoye,WU Shijie,et al.Design and application of high pressure sealing structure for new rock breaking hob[J].Mine Construction Technology,2011,32(2):11-14.
[10] 蔡鑫,孙建荣,李文增.钻井法凿井废弃泥浆处理技术[J].建井技术,2011,32(2):75-77.CAI Xin,SUN Jianrong,LI Wenzeng.Waste mud treatment technology for drilling shaft[J].Mine Construction Technology,2011,32(2):75-77.
[11] 赵晨德,孙建荣.煤矿立井钻井泥浆存在的问题及引进石油钻井泥浆技术的必要性[J].建井技术,2014,35(3):42-45.ZHAO Chende,SUN Jianrong.Problems existed in drilling mud of mine shaft drilling and necessity to introduce drilling mud technology from petroleum industry[J].Mine Construction Technology,2014,35(3):42-45.
[12] 牛学超,洪伯潜,杨仁树.非满配重水钻井井壁筒竖向结构稳定的理论研究[J].岩土力学,2006,27(11):1897-1901.NIU Xuechao,HONG Boqian,YANG Renshu.Study on vertica structural stability of bored shafts filled part of water[J].Rock and Soil Mechanics,2006,27(11):1897-1901.
[13] 程荷兰,王梦恕,聂庆科,等.竖井井壁漂浮下沉过程的力学行为[J].北京交通大学学报,2012,36(1):48-51.CHENG Helan,WANG Mengshu,NIE Qingke,et al.Study on mechanical behavior of shaft drilling liner during floating and dropping[J].Journal of Beijing Jiaotong University,2012,36(1):48-51.
[14] 洪伯潜.约束混凝土结构在井筒支护中的研究与应用[J].煤炭学报,2002,25(2):150-154.HONG Boqian.The research and application of confined concrete structure in shaft lining[J].Journal of China Coal Society,2002,25(2):150-154.
[15] 姚直书,薛维培,程桦,等.内层钢板高强钢筋混凝土复合井壁在冻结井筒应用研究[J].采矿与安全工程学报,2018,35(4):663-669.YAO Zhishu,XUE Weipei,CHENG Hua,et al.Research and application of composite shaft with inner steel plate and high strength reinforced concrete in frozen wellbore[J].Journal of Mining & Safety Engineering,2018,35(4):663-669.
[16] 洪伯潜,臧桂茂,谭杰.龙固矿近600 m深钻井井壁设计与安装[J].中国煤炭,2004,30(6):9-12.HONG Boqian,ZANG Guimao,TAN Jie.Design and installation of sidewall of 600 m deep well in Longgu mine[J].China Coal,2004,30(6):9-12.
[17] 姚直书,荣传新.双层钢板高强混凝土复合井壁强度的数值模拟[J].辽宁工程技术大学学报,2004,23(3):321-323.YAO Zhishu,RONG Chuanxin.Numerical simulation on strength of composite shift lining of high strength concrete and double steel cylinder[J].Journal of Liaoning Technical University,2004,23(3):321-323.
[18] 张驰,王新强,和锋刚,等.双层钢板约束混凝土钻井井壁力学性能数值模拟研究[J].建井技术,2008,29(5):22-24.ZHANG Chi,WANG Xinqiang,HE Fenggang,et al.Numerical simulation on mechanical characteristics of confined concrete drilling shift lining of double steel plate[J].Mine Construction Technology,2008,29(5):22-24.
[19] 张荣立,何国纬,李铎.采矿工程设计手册[M].北京:煤炭工业出版社,2002:1743-1751.ZHANG Rongli,HE Guowei,LI Duo.Designing guidebook of coal mining[M].Beijing:China Coal Industry Press,2002:1743-1751.
[20] 中华人民共和国国家标准编写组.煤矿立井井筒及硐室设计规范:GB 50384—2007[S].北京:中国计划出版社,2007:37-42.The National Standards Compilation Group of People’s Republic of China.Code for design of coal mine shaft and chamber:GB 50384—2007[S].Beijing:China Planning Press,2007:37-42.
[21] 杨俊杰.相似理论与结构模型试验[M].武汉:武汉理工大学出版社,2005:15-26.YANG Junjie.The similarity theory and structural model test[M].Wuhan:Wuhan University of Science and Technology Press,2005:15-26.
[22] 任彦龙,杨维好,韩涛.基于不同强度准则的井壁极限承载力研究[J].中国矿业大学学报,2011,40(4):540-543.REN Yanlong,YANG Weihao,HAN Tao.Study of the ultimate bearing capacity of a shaft lining based on different failure criteria[J].Journal of China University of Mining & Technology,2011,40(4):540-543.
[23] 韩涛,杨维好,任彦龙,等.钢骨钢纤维高强砼井壁水平承载特征的计算和试验[J].中国矿业大学学报,2012,41(2):205-211.HAN Tao,YANG Weihao,REN Yanlong,et al.Numerical and experimental model studies of the horizontal bearing properties of shaft linings of encased steel or steel fiber reinforced,high strength concrete[J].Journal of China University of Mining & Technology,2012,41(2):205-211.
[24] YAO Z S,CHENG H,RONG C X.Research on stress and strength of high strength reinforced concrete drilling shaft lining in thick top soils[J].Journal of China University of Mining & Technology,2007,17(3):432-435.
[25] O’SHEA M D,BRIDGE R Q.Design of circular thin-walled concrete filled steel tubes[J].Journal of Structural Engineering,ASCE,2000,126(11):1295-1303.
[26] 罗丹旎,李庆斌,胡昱,等.基于统一强度理论的高强混凝土强度准则[J].水利学报,2015,46(1):74-82.LUO Danni,LI Qingbin,HU Yu,et al.Strength criterion for high-strength concrete based on the unified strength theory[J].Shuili Xuebao,2015,46(1):74-82.
[27] 中华人民共和国国家标准编写组.混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2015:216-220.The National Standards Compilation Group of People’s Republic of China.Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture & Building Press,2015:216-220.
[28] 杨海朋,白冰,聂庆科.竖井井壁竖向附加力的理论计算方法[J].北京交通大学学报,2014,38(6):100-105.YANG Haipeng,BAI Bing,NIE Qingke.Theoretical study on shaft wall of vertical additional force[J].Journal of Beijing Jiaotong University,2014,38(6):100-105.
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