Study on Deformation Mechanism and Supporting Countermeasures of Compound Roofs in Loose and Weak Coal Roadways

المؤلفون المشاركون

Wang, Weijun
Yuan, Chao
Fan, Lei
Cui, Jianfeng
Cao, Liming
Guo, Yuning

المصدر

Advances in Civil Engineering

العدد

المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-13، 13ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2020-11-12

دولة النشر

مصر

عدد الصفحات

13

التخصصات الرئيسية

هندسة مدنية

الملخص EN

This paper considers the 333 return airway of the Gaokeng Coal Mine to analyze the deformation characteristics and failure mechanism of the surrounding rock of the composite roof for a loose and weak coal roadway.

The reasons for the large deformation are explored and the superiority of the prestressed truss and anchor rope is compared to ordinary anchor cables from the perspective of mechanics to propose a targeted coal roadway support method.

Sinking of the composite roof in the coal roadway is accompanied with a release and transfer of the surrounding rock stress.

The pressure of the composite roof transfers to the roadway sides and intensifies the fracture process of the coal body.

As a result, the ability to support the composite roof is weakened, and it further bends and sinks to form a vicious cycle that repeats itself.

Therefore, the support of the composite roof in the coal roadway should consider the roof, roadway sides, and floor as a single unit to achieve the support goal of reinforcing the roadway sides and roof.

Based on the above analysis, a comprehensive control technology with a truss and anchor rope is proposed as the main body and a bolt + anchor cable + metal network as the auxiliary.

This technology can improve the integral bearing capacity of the composite roof, strengthen the roadway side structures, and reinforce the roadway sides and roof.

Numerical simulation and field application results show that the support scheme can effectively realize safe control of the composite roof in coal roadways.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Cui, Jianfeng& Wang, Weijun& Yuan, Chao& Cao, Liming& Guo, Yuning& Fan, Lei. 2020. Study on Deformation Mechanism and Supporting Countermeasures of Compound Roofs in Loose and Weak Coal Roadways. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1123426

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Cui, Jianfeng…[et al.]. Study on Deformation Mechanism and Supporting Countermeasures of Compound Roofs in Loose and Weak Coal Roadways. Advances in Civil Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1123426

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Cui, Jianfeng& Wang, Weijun& Yuan, Chao& Cao, Liming& Guo, Yuning& Fan, Lei. Study on Deformation Mechanism and Supporting Countermeasures of Compound Roofs in Loose and Weak Coal Roadways. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1123426

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1123426