深井综放面沿空顺槽超前液压支架选型研究

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摘要支架选型是应用顺槽超前液压支架支护技术的关键。以新巨龙矿井1302工作面沿空顺槽超前液压支架选型为工程背景，分析沿空面侧向岩层结构与首采面的差异及综放面沿空顺槽支架–围岩关系。基于力矩平衡关系，建立确定沿空顺槽超前支护强度的力学模型，提出以岩层回转角为控制对象的观点；采用基本顶位态方程对沿空顺槽围岩变形进行预计，运用弹性力学理论计算煤柱及沿空顺槽实体帮的承载力，并以不发生“挤架”为原则，推导出基本顶的临界回转角为2.7°，沿空顺槽超前支护的临界强度为0.50 MPa，从而选择型号为ZTC30000/25/50的液压支架。最后，应用沿空顺槽表面位移观测结果，验证所选支架的合理性。研究结果对沿空顺槽超前支护强度的确定及支架选型具有参考意义。

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关键词 ：采矿工程, 综放面, 沿空顺槽, 超前液压支架, 选型, 变形预计

Abstract：Support selection is the key to application of advanced support technology with hydraulic support in gateways of coal face. Taking the selection of advanced hydraulic support in gob-side entry of working face 1302 in Xinjulong Mine as engineering background，the difference between the side strata structure of gob-side face and that of primary face is discussed；and the relationship between support and surrounding rock in gob-side entry of fully mechanized caving face is studied. Based on the moment equilibrium relations，mechanical model for determination of advance support strength in gob-side entry is established；and the viewpoint that strata rotary angle is the control object is proposed. Prediction of surrounding rock deformation of the gob-side entry is constructed by using displacement state equation of basic roof. Bearing capacities of coal pillar and solid side of the gob-side entry are calculated using the elastic mechanical theory. With the principle of squeeze nonoccurrence，the conclusions that the critical rotary angle of basic roof is 2.7°and the critical strength of advance support in the gob-side entry is 0.50 MPa are obtained. The advanced hydraulic support of ZTC30000/25/50 type is selected according to the results. Finally，the reasonableness of the support is verified by using observation result of surface displacement of the gob-side entry. The results can provide a reference for determination of reasonable strength of advanced support and support selection.

Key words： mining engineering fully mechanized caving face gob-side entry advanced hydraulic support selection deformation prediction

收稿日期: 2012-05-17

引用本文:

刘金海1，姜福兴1，孙广京2，卢诗祥2，张德飞2. 深井综放面沿空顺槽超前液压支架选型研究[J]. 岩石力学与工程学报, 2012, 31(11): 2232-2239.
LIU Jinhai1，JIANG Fuxing1，SUN Guangjing2，LU Shixiang2，ZHANG Defei2. SELECTION OF ADVANCED HYDRAULIC SUPPORT IN GOB-SIDE ENTRY OF FULLY MECHANIZED CAVING FACE OF DEEP MINE. , 2012, 31(11): 2232-2239.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I11/2232

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