Editorial highlights
特邀综述|康红普院士团队DUSE开年巨献—深部巷道裂隙煤岩体注浆加固理论与技术
发布时间：2023-04-06
Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways
特邀综述|康红普院士团队DUSE开年巨献—深部巷道裂隙煤岩体注浆加固理论与技术
Hongpu Kang, Wenzhou Li, Fuqiang Gao, Jianwei Yang
发布时间：2023-02-21
关键词：deep roadways, development direction,field study, fractured rocks, grouting materials, groutingmethods, high‐pressure grouting
摘要：随着浅部资源日益匮乏，煤矿开采深度逐渐增加，安全问题日益突出，深部巷道裂隙煤岩体的注浆技术是深部资源安全开采的关键技术之一。中国工程院康红普院士团队的这篇文章，全面总结和分析了深部巷道裂隙煤岩体注浆加固技术的理论、设计、材料、工艺和设备等方面的研究成果。并结合口孜东煤矿掘进工作面注浆现场应用实例，总结了对注浆加固效果的评价方法。
阅读全文 PDF 引用The mechanism of inward and outward expansion of multiscale dynamic permeability of coalbed methane at different temperatures
Zhiqiang Li, Xiaoqiang Hao, Yanwei Liu, Lin Li
发布时间：2023-04-06
关键词：diffusion, dynamic, gas, permeability, seepage, temperature
摘要：AbstractThe multiscale micro-nano pores in coal can result in the ultra-low permeability of coal, which restricts the efficiency of gas extraction. It is difficult for the conventional seepage-enhancement measures to affect the nanoscale pores within the coal matrix. Thermal stimulation can reach deep into the micro-nano pores within coal matrix to improve the permeability. Therefore, it is imp...
阅读全文 PDF 引用Experimental study on 3D internal penny-shaped crack propagation in brittle materials under uniaxial compression
Jiyun Xu, Hanzhang Li, Haijun Wang, Lei Tang
发布时间：2023-04-06
关键词：3D‐ILC, brittle materials, internal crack, penny‐shaped crack, rock fracture, uniaxial compression
摘要：AbstractFractures are widely present in geomaterials of civil engineering and deep underground engineering. Given that geomaterials are usually brittle, the fractures can significantly affect the evaluation of underground engineering construction safety and the early warning of rock failure. However, the crack initiation and propagation in brittle materials under composite loading remain unknow...
阅读全文 PDF 引用Numerical investigation on the spewing mechanism of earth pressure balance shield in a high-pressure water-rich sand stratum
Zhiyong Yang, Weiqiang Qi, Yanjie Ding, Yusheng Jiang, Xinkang Yang, Xing Yang, Xiaokang Shao
发布时间：2023-03-15
关键词：Numerical investigation on the spewing mechanism of earth pressure balance shield in a highpressure waterrich sand stratum
摘要：AbstractThe spewing of a screw conveyor easily occurs from the earth pressure balance (called EPB) shield in a water-rich sand stratum. This may lead to the collapse of the tunnel face and even serious subsidence of the ground surface. To understand the spewing mechanism of the shield screw conveyor and explore the critical hydraulic condition of soil spewing in a shield–soil chamber, a simpli...
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