Analyzing method to evaluate effect of roadway pressure relief

• Autorzy: Fan Lei , Wang Weijun , Yuan Chao

Identyfikatory

DOI

10.37190/msc202719

• Języki publikacji: EN

Abstrakty

EN

Based on the theory of matter–element extension, this paper uses the calculation results of FLAC 3D (Fast Lagrangian Analysis of Continua) as raw data to systematically evaluate the effects of roadway pressure relief under different pressure relief options. The results show that: 1) Pressure relief can reduce rock stress on the mining roadway to a certain extent by arranging the pressure relief roadway above or on one side of it. However, the low-stress area formed by the former is larger than that created by the latter. Moreover, appropriately increasing the width of the pressure relief roadway above the mining roadway can effectively improve the stress environment of the mining roadway. 2) The excavation sequence of the pressure relief roadway and the mining roadway has a greater impact on the pressure relief effect. Adopting the method of "excavating the pressure relief roadway first, and after the stress of the surrounding rock of the pressure relief roadway is stabilized, then excavating the mining roadway" can greatly reduce or avoid the disturbance effect caused by the pressure relief roadway excavation. This sequence of excavation can significantly reduce or avoid the effects of disturbances caused by the excavation of the pressure relief roadway. 3) Excavating the pressure relief roadway on one side of the mining roadway can effectively reduce the deformation of its roof, and arranging the pressure relief roadway above the mining roadway can effectively control the deformation of its two sides. Appropriately increasing the width of the pressure relief roadway above the mining roadway can improve the effect of pressure relief.

Słowa kluczowe

EN

matter element extension; roadway pressure relief; effect evaluation; method of analysis

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2020
• Tom: Vol. 27
• Strony: 283--302
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Fan Lei

• School of Resources, Environment, and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China

autor

Wang Weijun

• School of Resources, Environment, and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China

autor

Yuan Chao

• School of Resources, Environment, and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China

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