矿冶工程
礦冶工程
광야공정
2010年
1期
1-4,8
,共5页
采空区%塌陷%颗粒流%数值模拟%复合应力拱
採空區%塌陷%顆粒流%數值模擬%複閤應力拱
채공구%탑함%과립류%수치모의%복합응력공
goaf%collapse%particle flow%numerical simulation%complex stress arch
分析了顶板暴露面积、矿柱留设尺寸、开采深度、围岩性质、地质构造、工程扰动等因素对采空区稳定性的影响.提出了基于"复合应力拱"的采空群稳定性分析模型,并采用颗粒流数值模拟方法对具体工程案例进行了计算验证,结果与复合应力拱理论具有良好的符合性,表明这一方法适用于分析采空塌陷等复杂的、不连续体的力学过程,对矿山的安全生产具有一定的指导意义.
分析瞭頂闆暴露麵積、礦柱留設呎吋、開採深度、圍巖性質、地質構造、工程擾動等因素對採空區穩定性的影響.提齣瞭基于"複閤應力拱"的採空群穩定性分析模型,併採用顆粒流數值模擬方法對具體工程案例進行瞭計算驗證,結果與複閤應力拱理論具有良好的符閤性,錶明這一方法適用于分析採空塌陷等複雜的、不連續體的力學過程,對礦山的安全生產具有一定的指導意義.
분석료정판폭로면적、광주류설척촌、개채심도、위암성질、지질구조、공정우동등인소대채공구은정성적영향.제출료기우"복합응력공"적채공군은정성분석모형,병채용과립류수치모의방법대구체공정안례진행료계산험증,결과여복합응력공이론구유량호적부합성,표명저일방법괄용우분석채공탑함등복잡적、불련속체적역학과정,대광산적안전생산구유일정적지도의의.
Factors affecting goaf stability, such as exposed roof area, pillar size, mining depth, wall rock properties, geological structure, disturbance of engineering activities, were analyzed. A model was proposed for analyzing goaf group stabilities based on the theory of complex stress arch, and it was validated by a real case with the method of particle flow simulation. The simulation results showed a good coherence with the complex stress arch theory. This method is proven to be applicable for analyzing the mechanic process of goaf collapse with complexity and discontinuity, which is of great significance for guiding safety production in mines.
