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田磊, 谢文兵, 荆升国, 邢艳冬, 彭剑平. 综放跨采巷道棚-索耦合协同支护技术[J]. 煤炭科学技术, 2011, (11).
引用本文: 田磊, 谢文兵, 荆升国, 邢艳冬, 彭剑平. 综放跨采巷道棚-索耦合协同支护技术[J]. 煤炭科学技术, 2011, (11).
Framed Timber and Anchor Coupling Collective Support Technology for Fully Mechanized Top Coal Mining Face Crossing Over Gateway[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (11).
Citation: Framed Timber and Anchor Coupling Collective Support Technology for Fully Mechanized Top Coal Mining Face Crossing Over Gateway[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (11).

综放跨采巷道棚-索耦合协同支护技术

Framed Timber and Anchor Coupling Collective Support Technology for Fully Mechanized Top Coal Mining Face Crossing Over Gateway

  • 摘要: 芦岭煤矿Ⅱ82运输上山受上方Ⅱ927综放工作面跨采影响且巷道围岩比较破碎,通过分析巷道围岩失稳机理得出了导致U型钢支架结构失稳的原因及锚索支护合理位置,提出了棚-索耦合支护技术方案;利用U型钢支架形成的基本承载结构,通过壁后充填注浆实现了破碎围岩与U型钢支架的第一次耦合,再根据巷道围岩的变形特征和U型钢支架的结构失稳类型,通过合理布置结构补偿锚索实现支护结构补偿,使U型钢支架与锚索形成二次耦合支护,进而提高支架的整体承载能力和支护结构的稳定性,在整个跨采期间巷道顶底板移近量累计475 mm,两帮移近量累计206 mm。

     

    Abstract: According to the I82 transportation rise in Luling Mine affected by the cross mining of the I927 fully mechanized top coal caving mining face above an d the broken features of the surrounding rock along the gateway, with the analysis on the stability lost mechanism of the surrounding rock along the gateway, the stabilit y lost cause of the U type steel support structure and the selection on the rational location of the structure compensation anchor were obtained.A frame support and anc hor coupling support technical plan was provided.The technology would be first to use the U type steel support to form a basic loading structure and then with the backfi II and grouting in the gateway wall, a primary coupling of the broken surrounding rock and U type steel support could be realized.Then based on the deformation feature s of the gateway surrounding rock and structure stability lost mode of the U type steel support, with the rational layout of the structure compensation anchor to realize t he structure compensation, the secondary coupling of the U type steel support and anchor was realized. Thus the active and passive coupling support was realized and the completed bearing capacity of the support and the structure stability of the support structure could be improved.During the completed cross mining period, the roof and floor convergence of the gateway was 475 mm in total and the convergence of the two side walls was 206 mm in total.

     

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