摘要
Rocks are composed of mineral particles and micropores between mineral which has a great influence on the mechanical properties of rocks. In this paper, based on the theory of locked-in stress developed by academician Chen Zongji, the locked-in stress problem in underground rock is simulated by the thermal expansion of hard rubber particles. The pore inclusion in rock is assumed to be uniformly distributed spherical cavities. Using the thermal stress theory, the stress of rock with a spherical pore inclusion is equivalent to the thermal stress generated by the spherical hard rubber inclusion. The elastic theory formula of the temperature increment and the equivalent pore pressure of the spherical hard rubber inclusion is derived. The numerical simulation of the rock mass model with a spherical hard rubber inclusion is carried out and compared to the theoretical calculation results<span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"="">;</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"=""> the results show that they are consistent. The method proposed by this paper for simulating stress distribution in rock by thermal stress is reasonable and feasible</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"="">;</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-a
Rocks are composed of mineral particles and micropores between mineral which has a great influence on the mechanical properties of rocks. In this paper, based on the theory of locked-in stress developed by academician Chen Zongji, the locked-in stress problem in underground rock is simulated by the thermal expansion of hard rubber particles. The pore inclusion in rock is assumed to be uniformly distributed spherical cavities. Using the thermal stress theory, the stress of rock with a spherical pore inclusion is equivalent to the thermal stress generated by the spherical hard rubber inclusion. The elastic theory formula of the temperature increment and the equivalent pore pressure of the spherical hard rubber inclusion is derived. The numerical simulation of the rock mass model with a spherical hard rubber inclusion is carried out and compared to the theoretical calculation results<span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"="">;</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"=""> the results show that they are consistent. The method proposed by this paper for simulating stress distribution in rock by thermal stress is reasonable and feasible</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold;"="">;</span><span lang="EN-US" style="font-family:;" minion="" pro="" capt",serif;font-size:10pt;mso-fareast-font-family:宋体;mso-bidi-font-family:"times="" new="" roman";mso-a
作者
Lu Dong
Hansheng Geng
Hongfa Xu
Yinhao Yang
Lu Dong;Hansheng Geng;Hongfa Xu;Yinhao Yang(State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, National Defense Engineering College, Army Engineering University of PLA, Nanjing, China)
