本文關(guān)鍵詞： 滑動構(gòu)造 厚煤層 錨固結(jié)構(gòu) 巷道　出處：《采礦與安全工程學報》2017年05期 　論文類型：期刊論文

【摘要】：針對鄭州礦區(qū)煤層賦存條件,從煤層結(jié)構(gòu)、覆巖序列和支護特性3個方面闡述了滑動構(gòu)造區(qū)厚煤層巷道的變形破壞機制。在此基礎(chǔ)上,通過建立力學模型,研究了構(gòu)造厚煤層中錨固結(jié)構(gòu)形成的力學條件。并根據(jù)超化煤礦22031工作面地質(zhì)采礦條件,通過實測端錨錨桿的錨固長度,在確定頂、幫錨固結(jié)構(gòu)厚度的基礎(chǔ)上,計算得到形成頂、幫錨固結(jié)構(gòu)所需施加的錨桿預緊力分別為45.7 k N和44.0 k N。觀測數(shù)據(jù)表明,回采巷道服務期間頂?shù)装逡平考s330 mm,兩幫移近量約270 mm,巷道圍巖變形得到有效控制。
[Abstract]:According to the existing conditions of coal seam in Zhengzhou mining area, the deformation and failure mechanism of thick coal seam roadway in sliding structure area is expounded from three aspects: coal seam structure, overburden sequence and support characteristics. On this basis, the mechanical model is established. The mechanical conditions for the formation of anchor structure in structural thick coal seam are studied. According to the geological and mining conditions of 22031 face of Chaohua Coal Mine, the Anchorage length of end anchor bolt is measured, on the basis of determining the thickness of roof and side anchoring structure, The calculation results show that the pre-tension force of anchor rod is 45.7 KN and 44.0 KN, respectively. The observed data show that the anchoring force is 45.7 KN and 44.0 KN respectively. During the service period of the roadway, the roof and floor are moved nearly 330 mm, and the two sides are moved nearly 270 mm. The surrounding rock deformation of the roadway is effectively controlled.
【作者單位】： 中國礦業(yè)大學礦業(yè)工程學院深部煤炭資源開采教育部重點實驗室;鄭州煤炭工業(yè)(集團)公司博士后研發(fā)基地;
【基金】：江蘇省高校優(yōu)勢學科建設(shè)工程項目 煤炭資源與安全開采國家重點實驗室自主研究課題項目(SKLCRSM15X01)
【分類號】：TD353

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本文編號：1535215