發(fā)布時間：2018-10-10 06:10

【摘要】：本文以云駕嶺煤礦12305工作面運輸平巷為背景,運用數(shù)值模擬、工程監(jiān)測等方法,研究了高水巷旁充填沿空留巷技術的應用。論文采用理論分析、數(shù)值模擬和工程實測的方式,對比分析不同沿空巷道圍巖及充填體應力應變發(fā)展規(guī)律,對沿空留巷以及巷旁充填體在不同采掘階段的受力變化及變形特點進行分析,得出沿空留巷高水巷旁充填體位置較為合理的方式及充填體受力特點等規(guī)律性的認識。通過實驗室實驗,研究了水灰比為1.8情況下高水材料的初凝時間、強度隨養(yǎng)護時間變化的特點及其破壞特征等特性,實驗結論可以為高水材料巷旁充填體尺寸參數(shù)的選取、下區(qū)段巷道支護設計等提供參考。最后通過現(xiàn)場實測,對高水巷旁充填體在工作面回采期間的受力進行實測分析,驗證了充填體尺寸參數(shù)、巷旁充填體材料配比選擇的合理性,結論為下區(qū)段工作面回采、巷道支護及沿空留巷提供理論依據(jù)。本文研究表明,可將巷道受工作面回采影響分為:一次采動前影響區(qū)(測站距工作面60米~10米)、一次采動影響劇烈區(qū)(測站距工作面10米~-10米),一次采動后影響區(qū)(測站在工作面-10米~-55米處)、留巷穩(wěn)定區(qū)(-55米以遠)。
[Abstract]:Based on the transportation roadway of 12305 working face in Yunjialing Coal Mine, this paper studies the application of filling along gob side roadway in high water roadway by means of numerical simulation and engineering monitoring. In this paper, by means of theoretical analysis, numerical simulation and engineering measurement, the development laws of stress and strain in surrounding rock and backfill of different goaf roadways are compared and analyzed. Based on the analysis of the mechanical changes and deformation characteristics of gob and side filling in different mining stages, it is concluded that the reasonable position of backfill beside high water roadway along goaf and the characteristics of filling force are recognized. Through laboratory experiments, the characteristics of initial setting time, change of strength with curing time and failure characteristics of high water material with water cement ratio of 1.8 are studied. The experimental results can be used to select the size parameters of the filling body beside the roadway of high water material. The design of roadway support in the lower section provides reference. Finally, through the field measurement, the force of the backfill beside the high water roadway during the mining face is measured and analyzed, which verifies the rationality of the parameters of the filling body and the selection of the material ratio of the backfill beside the roadway. The conclusion is that the next section of the working face is recovered. Roadway support and roadway along the gob provide theoretical basis. The present study shows that, The roadway affected by mining face can be divided into: the influence area before the primary mining (60 meters or 10 meters from the measuring station to the working face), the severe area of the mining influence in the first time (10 meters to 10 meters from the working face), and the influence area after the first mining (the station is working in the survey station). Face-10 meters-55 meters), left roadway stability area (-55 meters far).
【學位授予單位】：河北工程大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD353

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本文編號：2260930