煤矿现代化
煤礦現代化
매광현대화
COAL MINE MODERNIZATION
2014年
4期
100-103
,共4页
极薄煤层%综采%支架选型%顶板控制
極薄煤層%綜採%支架選型%頂闆控製
겁박매층%종채%지가선형%정판공제
thin seams%fully-mechanized mining%support selection%roof control
极薄煤层开采，顶板控制十分重要，采场支护强度不仅要保证采场顶板完整，更重要的是控制顶板大量下沉，尽可能提高极薄煤层采场有效空间[1]，采场支架与围岩的关系是双曲线关系，即随着支护强度的增加，顶板下沉量将减少，但支护强度增加到一定程度后，顶板的下沉量增加有限，而支护强度的增加，势必造成支架重量、厚度的增加，这又影响了极薄煤层有效空间的增加。因此，研究具体工程地质条件下支架与围岩的定量关系，确定支架限定顶板变形的程度，控制顶板的下沉量是极薄煤层综合机械化开采非常重要的课题[1-5-6]。
極薄煤層開採，頂闆控製十分重要，採場支護彊度不僅要保證採場頂闆完整，更重要的是控製頂闆大量下沉，儘可能提高極薄煤層採場有效空間[1]，採場支架與圍巖的關繫是雙麯線關繫，即隨著支護彊度的增加，頂闆下沉量將減少，但支護彊度增加到一定程度後，頂闆的下沉量增加有限，而支護彊度的增加，勢必造成支架重量、厚度的增加，這又影響瞭極薄煤層有效空間的增加。因此，研究具體工程地質條件下支架與圍巖的定量關繫，確定支架限定頂闆變形的程度，控製頂闆的下沉量是極薄煤層綜閤機械化開採非常重要的課題[1-5-6]。
겁박매층개채，정판공제십분중요，채장지호강도불부요보증채장정판완정，경중요적시공제정판대량하침，진가능제고겁박매층채장유효공간[1]，채장지가여위암적관계시쌍곡선관계，즉수착지호강도적증가，정판하침량장감소，단지호강도증가도일정정도후，정판적하침량증가유한，이지호강도적증가，세필조성지가중량、후도적증가，저우영향료겁박매층유효공간적증가。인차，연구구체공정지질조건하지가여위암적정량관계，학정지가한정정판변형적정도，공제정판적하침량시겁박매층종합궤계화개채비상중요적과제[1-5-6]。
Roof control is very important for thin seam mining. The support strength of the mining area must ensure complete roof, and more importantly, must control substantial roof subsidence and maximize the effective mining area at the ultra thin seam. The Support is hyperbolic curve related to the surrounding roc, that means as the support strength increases, the roof subsidence decreases, however, when the support-ing strength increases to a certain extent, there exists a subsidence increase limit, therefore, the increased supporting strength will lead to in-creased support weight and thickness, which in turn decrease the effective space in the ultra thin seam. Therefore, the study of the quantitative relationship between support and surrounding rock under specific engineering geological conditions, to determine the extent of permitted roof deformation and the control over roof subsidence is a very important topic for fully mechanized mining at ultra thin seam.
