Software LDEAS2.0 on large deformation mechanical analysis for deep soft rock engineering and its engineering application" />
深部软岩工程大变形力学分析软件LDEAS2.0及工程应用
Software LDEAS2.0 on large deformation mechanical analysis for deep soft rock engineering and its engineering application
CHEN Xin1, ZHU Yi1, ZHOU Yongfa2, DU Jingna3, JIANG Bei1, HE Manchao1*
(1. State Key Laboratory of Tunnel Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
2. Element Computing Technology Co., Ltd., Tianjin 300450, China; 3. School of Urban Railway Engineering, Shaanxi Railway Institute, Weinan, Shaanxi 714000, China)
Abstract：The Large Deformation Engineering Analysis System (LDEAS) is a specialized finite element software designed for analyzing large deformation mechanics, supporting design, and evaluating stability in deep soft rock engineering. The first version of the software, LDEAS 1.0, was developed in 2007, and its main features include: (1) the capability to perform both polar and additive decomposition analyses for large deformations, as well as the ability to solve three types of nonlinear problems—geometric, physical, and contact nonlinearities; (2) the inclusion of rock mass, joint, and support structure elements, enabling calculations for initial in-situ stresses and dynamic simulations for construction and support; (3) the development of the computation program via the Finite Element Program Generator (FEPG) based on low-code programming technology. To address the limitations of the first version and enhance the software, development of the second version, LDEAS 2.0, commenced in 2020. The main improvements and upgrades encompass three key aspects: (1) the introduction of the NPR bolt/anchor element and an implicit damping iteration algorithm for the renewal of elastoplastic stresses, enriching the variety of support structure elements and improving convergence and iteration speed for elastoplastic calculations; (2) an upgrade of the source code for the finite element computing program from Fortran to C language, enhancing fluency, efficiency, and readability; (3) the development of a new integrated interactive user interface and the inclusion of parallel computing, significantly improving user experience and the efficiency of large-scale computations. Test examples and typical engineering cases have validated the correctness, reliability, and practicality of LDEAS 2.0. The upgrades and development of both versions of LDEAS facilitate comparative studies of two major finite deformation theories and investigations of the rock-bolt coupling effects of NPR bolts/cables, providing reliable software for research on deep rock mechanics issues in China, which holds significant theoretical and engineering application value.
[1] 何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J]. 岩石力学与工程学报，2005，24(16)：2 803–2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803–2 813.(in Chinese))
[2] 何满潮，郭志飚. 恒阻大变形锚杆力学特性及其工程应用[J]. 岩石力学与工程学报，2014，33(7)：1 297–1 308.(HE Manchao，GUO Zhibiao. Mechanical property and engineering application of anchor bolt with constant resistance and large deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 297–1 308.(in Chinese))
[3] 陶志刚，罗森林，康宏伟，等. 公路隧道炭质板岩变形规律及蠕变特性研究[J]. 中国矿业大学学报，2020，48(5)：898–906.(TAO Zhigang，LUO Senlin，KANG Hongwei，et al. Analysis of deformation law and creep characteristics of carbonaceous slate in highway tunnel[J]. Journal of China University of Mining and Technology，2020，48(5)：898–906.(in Chinese))
[4] JING L. A review of techniques，advances and outstanding issues in numerical modelling for rock mechanics and rock engineering[J]. International Journal of Rock Mechanics and Mining Sciences， 2003，40：283–353.
[5] ZHOU X P，WANG Y T. State-of-the-art review on the progressive failure characteristics of geomaterials in peridynamic theory[J]. Journal of Engineering Mechanics，2021，147(1)：03120001.
[6] LIU Y R， WU Z S， YANG Q， et al. Dynamic stability evaluation of underground tunnels based on deformation reinforcement theory[J]. Advances in Engineering Software，2018，124：97–108.
[7] 唐春安，赵 文. 岩石破裂全过程分析软件系统RFPA2D[J]. 岩石力学与工程学报，1997，16(5)：109–110.(TANG Chun′an，ZHAO Wen. Rock fracture full process analysis software system[J]. Chinese Journal of Rock Mechanics and Engineering，1997，16(5)：109–110.(in Chinese))
[8] 何满潮，陈 新，梁国平，等. 深部软岩工程大变形力学分析设计系统[J]. 岩石力学与工程学报，2007，26(5)：934–943.(HE Manchao，CHEN Xin，LIANG Guoping，et al. Software system for large deformation mechanical analysis of soft rock engineering at great depth[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：934–943.(in Chinese))
[9] FENG X T，WANG Z，ZHOU Y，et al. Modelling three-dimensional stress-dependent failure of hard rocks[J]. Acta Geotechnica，2021，16(6)：1 647–1 677.
[10] 冯 春，李世海，郑炳旭，等. 基于连续–非连续单元方法的露天矿三维台阶爆破全过程数值模拟[J]. 爆炸与冲击，2019，39(2)：110–120.(FENG Chun，LI Shihai，ZHENG Bingxu，et al. Numerical simulation on complete process of three-dimensional bench blasting in an open-pit mine based on CDEM[J]. Explosion and Shock Waves，2019，39(2)：110–120.(in Chinese))
[11] GUO H Y，CHEN X，HE M C，et al. Frictional contact algorithm study on the numerical simulation of large deformations in deep soft rock tunnels[J]. Mining Science and Technology，2010，20(4)：524–529.
[12] 何满潮，郭宏云，陈 新，等．基于和分解有限变形力学理论的深部软岩巷道开挖大变形数值模拟分析[J]. 岩石力学与工程学报，2010，29(Supp.2)：4 050–4 055.(HE Manchao，GUO Hongyun，CHEN Xin，et al. Numerical simulation analysis of large deformation of deep soft rock engineering based on solar decomposition theorem[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp. 2)：4 050–4 055.(in Chinese))
[13] CHEN X，GUO H Y，ZHAO P，et al. Numerical modeling of large deformation and nonlinear frictional contact of excavation boundary of deep soft rock tunnel[J]. Journal of Rock Mechanics and Geotechnical Engineering，2011，3(Supp.)：421–428.
[14] HE M C，SOUSA R L，MÜLLER A，et al. Analysis of excessive deformations in tunnels for safety evaluation[J]. Tunnelling and Underground Space Technology，2015，45：190–202.
[15] 何满潮，陈 新， 周永发，等. 软岩工程大变形力学分析：原理、软件、实例[M]. 北京：科学出版社，2014：79–87.(HE Manchao，CHEN Xin，ZHOU Yongfa，et al. Large deformation mechanical analysis of soft rock engineering：principles，software，and case studies[M]. Beijing：Science Press，2014：79–87.(in Chinese))
[16] 陈至达. 连续介质有限变形力学几何场论[J]. 力学学报，1979，15(2)：107–117.(CHEN Zhida. Geometric field theory of finite deformation mechanics in continuum media[J]. Chinese Journal of Theoretical and Applied Mechanics，1979，15(2)：107–117.(in Chinese))
[17] 陈至达. 有限变形力学基础[M]. 徐州：中国矿业大学出版社，2000：150–155.(CHEN Zhida. Fundamentals of finite deformation mechanics[M]. Xuzhou：China University of Mining and Technology Press，2000：150–155.(in Chinese))
[18] 马怀发，梁国平，周永发. 弹塑性隐式阻尼迭代法[J]. 工程力学，2012，29(10)：57–62.(MA Huaifa，LIANG Guoping，ZHOU Yongfa. Implicit damping iteration algorithm for elastoplastic equations[J]. Engineering Mechanics，2012，29(10)：57–62.(in Chinese))
[19] 谷兆祺，彭守拙，李仲奎. 地下洞室工程[M] . 北京：清华出版社，1994：7.(GU Zhaoqi，PENG Shouzhuo，LI Zhongkui. Underground cavern engineering[M]. Beijing：Tsinghua University Press，1994：7.(in Chinese))
[20] 张 博. 昌宁隧道软岩变形机理及NPR锚索开挖补偿支护技术研究[博士学位论文][D]. 北京：中国矿业大学(北京)，2022.(ZHANG Bo. Study on soft rock deformation mechanism and NPR anchor cable excavation compensation support technology of Changning tunnel[Ph.D. Thesis] [D]. Beijing：China University of Mining and Technology(Beijing)，2022.(in Chinese))
2026, Vol. 45 
