3D打印技术在节理岩体试样制备中的应用与研究
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摘要
岩石节理面的粗糙度对岩体的形变、位移和强度均有显著影响。为了研究岩石节理面粗糙度的测量问题,以巴顿(Barton)公式[1]为基础,利用3D打印技术制作模具并以此制备模拟岩石试样。选取10组不同粗糙度的节理面,以相同的法向应力进行直剪试验,研究恒定的法向应力下节理面抗剪峰值与粗糙度的定性关系。将试验结果与巴顿公式进行对比分析,验证其数据的合理性。试验结果表明:3D打印技术应用于节理面试样制备中的模具制作可行且高效。
The roughness of rock joints has a significant effect on the deformation,displacement and strength of rock mass. In order to research the measurement of the roughness of the rock joint surface,based on the Barton formula,the mold was fabricated by 3 D printing technology and the simulated rock sample was prepared. Choose10 groups of joints with different roughness and the direct shear test was carried out with the same normal stress to study the qualitative relationship between the shear peak and the roughness of the joint under constant normal stress. Compare the test results with the Barton formula and analyze them to verify the rationality of the data. The test results show that the application of 3 D printing technology in the preparation of joint surface samples is feasible and efficient.
The roughness of rock joints has a significant effect on the deformation,displacement and strength of rock mass. In order to research the measurement of the roughness of the rock joint surface,based on the Barton formula,the mold was fabricated by 3 D printing technology and the simulated rock sample was prepared. Choose10 groups of joints with different roughness and the direct shear test was carried out with the same normal stress to study the qualitative relationship between the shear peak and the roughness of the joint under constant normal stress. Compare the test results with the Barton formula and analyze them to verify the rationality of the data. The test results show that the application of 3 D printing technology in the preparation of joint surface samples is feasible and efficient.
引文
[1]N.Barton,V.Choubey.The shear strength of rock joints in theory and practice[J].Rock Mechanics FelsmechanikMécanique des Roches,1978,10(1-2).
[2]蔡毅.岩体结构面粗糙度评价与峰值抗剪强度估算方法研究[D].北京:中国地质大学,2018.
[3]江权,宋磊博.3D打印技术在岩体物理模型力学试验研究中的应用研究与展望[J].岩石力学与工程学报,2018,37(1):23-37.
[4]汪冲浪,祁生文.3D打印技术在岩石试验中的应用现状与展望[J].地球物理学进展,2018,33(2):842-849.
[5]肖维民,黄巍,丁蜜,等.基于3D打印技术的模拟柱状节理岩体试样制备方法[J].岩土工程学报,2018,40(S2):256-260.
[6]姜涛,程筱胜,崔海华,等.3D打印相关技术的发展现状[J].机床与液压,2018,46(3):154-160,146.
[7]李荣林.金属模具快速制造技术发展研究[J].河南科技,2014(6):128.
[8]杨威,侯奥林,吕少茵,瞿金平.体积拉伸流变挤出机制备PLA/ABS复合材料及其结构性能研究[J].塑料工业,2017,45(10):96-101.
[9]N.Barton,V.Choubey.The shear strength of rock joints in theory and practice[J].Rock Mechanics FelsmechanikMécanique des Roches,1978,10(1-2).
[10]严家汲.道路建筑材料(第三版)[M].北京:人民交通出版社,2002.
[11]杨洁,荣冠,程龙,等.节理峰值抗剪强度试验研究[J].岩石力学与工程学报,2015,34(5):884-894.
[12]彭玉龙,张雪梅,戴丽.3D打印技术在土木工程中的发展[J].住宅与房地产,2018(16):203.
[13]刘泉声,雷广峰,彭星新,等.节理岩体中锚杆剪切力学模型研究及试验验证[J].岩土工程学报,2018,40(5):794-801.
[14]N.Barton,V.Choubey.The shear strength of rock joints in theory and practice[J].Rock Mechanics FelsmechanikMécanique des Roches,1978,10(1-2).
[15]田威,裴志茹,韩女.基于CT扫描与3D打印技术的岩体三维重构及力学特性初探[J].岩土力学,2017,38(8):2297-2305.
[16]王培涛,刘雨,章亮,等.基于3D打印技术的裂隙岩体单轴压缩特性试验初探[J].岩石力学与工程学报,2018,37(2):364-373.
[2]蔡毅.岩体结构面粗糙度评价与峰值抗剪强度估算方法研究[D].北京:中国地质大学,2018.
[3]江权,宋磊博.3D打印技术在岩体物理模型力学试验研究中的应用研究与展望[J].岩石力学与工程学报,2018,37(1):23-37.
[4]汪冲浪,祁生文.3D打印技术在岩石试验中的应用现状与展望[J].地球物理学进展,2018,33(2):842-849.
[5]肖维民,黄巍,丁蜜,等.基于3D打印技术的模拟柱状节理岩体试样制备方法[J].岩土工程学报,2018,40(S2):256-260.
[6]姜涛,程筱胜,崔海华,等.3D打印相关技术的发展现状[J].机床与液压,2018,46(3):154-160,146.
[7]李荣林.金属模具快速制造技术发展研究[J].河南科技,2014(6):128.
[8]杨威,侯奥林,吕少茵,瞿金平.体积拉伸流变挤出机制备PLA/ABS复合材料及其结构性能研究[J].塑料工业,2017,45(10):96-101.
[9]N.Barton,V.Choubey.The shear strength of rock joints in theory and practice[J].Rock Mechanics FelsmechanikMécanique des Roches,1978,10(1-2).
[10]严家汲.道路建筑材料(第三版)[M].北京:人民交通出版社,2002.
[11]杨洁,荣冠,程龙,等.节理峰值抗剪强度试验研究[J].岩石力学与工程学报,2015,34(5):884-894.
[12]彭玉龙,张雪梅,戴丽.3D打印技术在土木工程中的发展[J].住宅与房地产,2018(16):203.
[13]刘泉声,雷广峰,彭星新,等.节理岩体中锚杆剪切力学模型研究及试验验证[J].岩土工程学报,2018,40(5):794-801.
[14]N.Barton,V.Choubey.The shear strength of rock joints in theory and practice[J].Rock Mechanics FelsmechanikMécanique des Roches,1978,10(1-2).
[15]田威,裴志茹,韩女.基于CT扫描与3D打印技术的岩体三维重构及力学特性初探[J].岩土力学,2017,38(8):2297-2305.
[16]王培涛,刘雨,章亮,等.基于3D打印技术的裂隙岩体单轴压缩特性试验初探[J].岩石力学与工程学报,2018,37(2):364-373.