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摘 要
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本文對國內(nèi)外放頂煤開采技術(shù)發(fā)生歷史及現(xiàn)狀進行了綜合闡述，對放頂煤液壓支架進行了分類和對其各種形式研究；介紹了每種形式放頂煤液壓支架各適應(yīng)的煤層條件；并結(jié)合神東四盤區(qū)的現(xiàn)狀，設(shè)計適用于煤層厚度5.35-9.86，平均采高8.9米滿足頂板、地板條件的放頂煤液壓支架.形成滿足神東現(xiàn)狀的放頂煤開采技術(shù)理論。
通過對現(xiàn)有放頂煤液壓支架的分析，優(yōu)勢對比，設(shè)計出適合的結(jié)構(gòu)形式，最后對立柱、頂梁、掩護梁和底座進行了強度校核計算。
關(guān)鍵字：放頂煤液壓支架；立柱；頂梁；掩護梁；底座；放煤機構(gòu)。
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Abstract
In this paper on the domestic and foreign technology of top coal caving mining occurred history and current situation has been discussed, on the roof caving coal hydraulic support the classification and research in its various forms; introduced each kind of form of roof caving coal hydraulic support the adaptation conditions of coal seam; Shendong four disc area and combined with the status quo, designed for coal seam thickness 5.35-9.86, collect on average 8.9 meters high and meet the conditions of roof and floor of top coal caving hydraulic support. Formed to meet the Shendong status of top coal caving mining technology in theory.
Through the analysis of the existing roof caving coal hydraulic support, comparative advantages of design for the structural form, strength check and calculates the column, a top beam and a shield beam and a base at the end of paper.
Keywords: Caving hydraulic support；Column; beam; shield; base;
coal caving mechanism.