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Theoretic Study on Room Mining with Backstowing in Yubujie Coal Mine

Author: CuiFeng
Tutor: ZhangHuaXing
School: CCRI
Course: Mining engineering
Keywords: Room -filling mining Aeolian sand Griffith strength criterion Filling body strength Full rate
CLC: TD823.7
Type: Master's thesis
Year: 2009
Downloads: 161
Quote: 1
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Abstract


In this thesis, Yulin Yuyang elm BU boundary mine engineering background to study the structure of the overlying strata under the conditions of the mining -room room and pillar dimensions , and traditional room , the size of the column design formulas corrected . The aeolian sand characteristics are widely distributed in northern Shaanxi proposed the use of aeolian sand filling the room fill mining ideas . The room -filling mining ideas different from the pure the mining -room design ideas , it will be more liberated underground coal resources and to achieve the purpose of the control of strata movement . In this paper, the mathematical calculation and analysis of the full rate through mechanical means , Coal the housing coal pillar size range , and lists the program by means of numerical simulation analysis of the strength of the filling body , full rate , recovery rate of the overlying strata control , Finally partial filling of the overlying strata control . Selection of room -filling mining parameters , the preliminary study of this paper provides a theoretical ideas, Yuyang room mining has practical significance .

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CLC: > Industrial Technology > Mining Engineering > Mining > Coal mining > Underground mining methods > Packed and mining method
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