A Study of Safety Coefficient Determination and Support Parameter Optimization Based on Vulnerability Preevaluation | Zendy

Minglei Zhang | Zendy; Linsheng Gao | Zendy; Yue Yang | Zendy; Yidong Zhang | Zendy; Ming Ji | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

A Study of Safety Coefficient Determination and Support Parameter Optimization Based on Vulnerability Preevaluation

Author(s) -

Minglei Zhang,

Linsheng Gao,

Yue Yang,

Yidong Zhang,

Ming Ji

Publication year - 2021

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2021/6629888

Subject(s) - roof , vulnerability (computing) , coal mining , structural engineering , foundation (evidence) , coal , stress (linguistics) , stability (learning theory) , civil engineering , engineering , mining engineering , geotechnical engineering , reliability engineering , computer science , law , linguistics , philosophy , computer security , machine learning , political science , waste management

The preevaluation to the vulnerability of the surrounding rocks is proposed as one of the reliable indicators of the safety coefficient of gateway support and a foundation to optimize the support design parameters. In this study, taking the surrounding rocks, stress, geological environment, and service time into consideration, the safety coefficient is determined based on the vulnerability scores calculated by the vulnerability preevaluation model of the surrounding rock. Applying the safety coefficient to the instability evaluation of the composite rock-bolt bearing structure, the strength required to maintain the stability of the gateway is calculated, which further provides references and guidance to the optimization of the anchor support parameters. This method has been successfully adopted by the GuCheng coal mining project in N1303 tailgate to strengthen the anchor-bolt structure in the roof watering area especially the main inclined shaft. Applying more accurately calculated strength to the anchor-bolt structure can effectively avoid the issue of overcompensation, thus reducing the cost and increasing the driving speed. Furthermore, this method provides insights into optimizing design parameters of the gateway. This method provides a reliable basis for the optimization design of bolt support parameters in coal mine gateway.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research