Research on Failure Mechanism and Parameter Sensitivity of Zonal Disintegration in Deep Tunnel

المؤلفون المشاركون

Zhang, Xutao
Gao, Qiang
Cui, Shicai
Duan, Changrui

المصدر

Advances in Civil Engineering

العدد

المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-10، 10ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2019-01-03

دولة النشر

مصر

عدد الصفحات

10

التخصصات الرئيسية

هندسة مدنية

الملخص EN

With the increase of excavation depth, the zonal disintegration phenomenon appears in the deep rock mass, which is quite different from the failure mode of shallow tunnel.

In order to analyse the failure mechanism of this phenomenon, an elastoplastic softening damage model was put forward based on the softening damage characteristics of deep rock mass.

The constitutive equations, the equilibrium equations, and the failure criterion were deduced.

The theoretical solutions of radial displacement and radial stresses and tangential stresses of deep surrounding rock mass were calculated.

The distribution law of zonal disintegration in deep tunnel was obtained.

The theoretical solutions presented an oscillating mode.

The theoretical calculated widths of fracture zones were in good agreement with the in situ test data.

Besides, the sensitivity of different parameters to fracture morphology was calculated and analysed.

The results show that the relative loading strength has a controlling role in the zonal disintegration morphology, followed by the cohesion force and deformation modulus, and the internal friction angle is the least.

This study reveals the morphological characteristics and influencing factors of zonal disintegration, which provides a basis for the prediction and support control of fracture modes.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Zhang, Xutao& Gao, Qiang& Cui, Shicai& Duan, Changrui. 2019. Research on Failure Mechanism and Parameter Sensitivity of Zonal Disintegration in Deep Tunnel. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1116535

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Zhang, Xutao…[et al.]. Research on Failure Mechanism and Parameter Sensitivity of Zonal Disintegration in Deep Tunnel. Advances in Civil Engineering No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1116535

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Zhang, Xutao& Gao, Qiang& Cui, Shicai& Duan, Changrui. Research on Failure Mechanism and Parameter Sensitivity of Zonal Disintegration in Deep Tunnel. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1116535

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1116535