【摘要】：沿空留巷是通過技術手段將上一區(qū)段的運輸平巷保留下來作為下區(qū)段回風平巷的一種無煤柱護巷技術,新型高水材料具有增阻速度快,抗變形能力強等巷旁充填體的良好性能,是理想的沿空留巷巷旁充填材料,隨著沿空留巷技術的發(fā)展,該技術不斷被推廣應用到各類地質條件下的礦井。本文采用理論分析、數(shù)值計算以及現(xiàn)場實測等方法,對大傾角煤層沿空留巷圍巖活動規(guī)律以及巷旁充填體穩(wěn)定性進行分析研究,并結合庇山煤礦12050工作面機巷沿空留巷工業(yè)性實驗,對利用新型高水材料在大傾角煤層條件下進行巷旁充填沿空留巷技術進行了研究。根據(jù)庇山煤礦地質與開采條件,對巷內加強支護方式、巷旁充填體的穩(wěn)定性控制等進行了設計與實施,且在留巷期間與復采期間分別及進行了礦壓觀測,從而對沿空留巷效果進行分析研究。庇山煤礦通過利用新型高水材料巷旁充填技術,采取加強巷旁充填體穩(wěn)定性的技術措施,成功實施了沿空留巷工程,緩解了采掘接替緊張問題,改善了礦井安全狀況,提高了煤炭資源回收率,具有可觀的經(jīng)濟效益和良好的社會效益。
[Abstract]:Gob-side entry retaining is a kind of non-pillar roadway protection technology by means of technical means to retain the transport roadway of the upper section as the return air roadway of the lower section. The new high-water material has the good performance of roadway filling body such as fast increase in resistance and strong resistance to deformation. It is an ideal filling material for gob-side entry retaining. With the development of gob-side entry retaining technology In this paper, the movement law of surrounding rock and the stability of roadway filling body in gob-side entry retaining in high dip seam are analyzed and studied by means of theoretical analysis, numerical calculation and field measurement, and the industrial experiment of gob-side entry retaining in 12050 working face of Bishan Coal Mine is carried out. Based on the geological and mining conditions of Bishan Coal Mine, the reinforcement support method in the roadway and the stability control of the filling body near the roadway are designed and implemented, and the rock pressure observation is carried out during the roadway retaining and re-mining. By using the new high water material roadside filling technology and adopting the technical measures to strengthen the stability of the roadside filling body, Bishan Coal Mine has successfully implemented the gob-side entry retaining project, alleviated the shortage of mining and excavation replacement, improved the mine safety condition, and raised the coal resource recovery rate, which is considerable. Economic benefits and good social benefits.
【學位授予單位】：中國礦業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD353

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