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Research on the failure process and stability control technology in a deep roadway: Numerical simulation and field test
Energy Science & Engineering ( IF 3.8 ) Pub Date : 2020-02-26 , DOI: 10.1002/ese3.664
Chuanwei Zang 1 , Miao Chen 1 , Guangchao Zhang 1 , Kun Wang 1 , Dongdong Gu 1
Affiliation  

With the increase in mining depth and the deterioration of surrounding rock conditions, large deformation failure of deep roadway surrounding rock is still very common. To solve the support problem, it is necessary to understand the deformation and failure mechanism of the deep roadway. This paper presents a case study on the deformation failure behavior and support design of a deep roadway in the Tangyang mine by field tests and numerical simulations. The rock mass properties were first evaluated based on field data and the mechanical parameters of rock specimens. Then, the numerical model of the deep roadway surrounding rock was established based on the calibrated microparameters. The deformation features and cracking behavior of the roadway were investigated in detail. The results show that the cracking process of crack initiation, crack propagation, and rock separation in the surrounding rock of this kind of roadway is a gradual process developing from a shallow to deep depth. A combined support “bolt‐cable‐mesh‐steel ladder” was proposed based on the failure characteristics of the roadway. Finally, a numerical simulation and field experiment were conducted to evaluate the rationality of the proposed support scheme, and the results show that the new support method can effectively control the surrounding rock. This study can provide valuable references for support design in deep underground engineering.

中文翻译:

深巷道破坏过程与稳定控制技术研究:数值模拟与现场试验

随着开采深度的增加和围岩条件的恶化,深部巷道围岩大变形破坏仍然很普遍。为了解决支护问题,有必要了解深部巷道的变形和破坏机理。通过现场试验和数值模拟,对唐阳矿深巷道的变形破坏行为和支护设计进行了案例研究。首先根据现场数据和岩石标本的力学参数评估岩体性质。然后,基于标定的微参数,建立了深巷道围岩的数值模型。详细研究了巷道的变形特征和开裂行为。结果表明,裂纹萌生的开裂过程,裂缝的扩展,这种巷道围岩的分离是一个由浅到深的逐步发展过程。根据巷道的破坏特征,提出了组合式“锚索网状钢梯”。最后,通过数值模拟和野外试验,评价了所提出的支护方案的合理性,结果表明,新的支护方法可以有效地控制围岩。该研究可为深层地下工程的支护设计提供有价值的参考。进行了数值模拟和野外试验,评价了所提出的支护方案的合理性,结果表明,新的支护方法可以有效地控制围岩。该研究可为深层地下工程的支护设计提供有价值的参考。进行了数值模拟和野外试验,评价了所提出的支护方案的合理性,结果表明,新的支护方法可以有效地控制围岩。该研究可为深层地下工程的支护设计提供有价值的参考。
更新日期:2020-02-26
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