薄煤层炮采π型钢梁支护工艺实践
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摘要
基于霍州煤电集团团柏煤矿特点,在开采条件较复杂的情况下,采用炮采和π型钢梁支护顶板工艺,对前期废弃的薄煤层进行回采实践。实践应用效果表明,π型钢梁支护效果较好,能够适应近距离上覆采空区的条件,开采期间无垮顶和漏顶事故,具有较好的经济效益和社会效益。
Based on the characteristics of Tuanbai Coal Mine of Huozhou Coal Power Group, in the case of complicated mining conditions, blasting mining and supporting roof technology ofπ-shaped steel beam are adopted to retrieve thin coal seam abandoned in earlier period. Practical application results show that the supporting effect of π-shaped steel beam is better, and it can adapt to the conditions of close overlying goaf. There are no roof collapse and roof leakage accidents during mining. It has better economic and social benefits.
Based on the characteristics of Tuanbai Coal Mine of Huozhou Coal Power Group, in the case of complicated mining conditions, blasting mining and supporting roof technology ofπ-shaped steel beam are adopted to retrieve thin coal seam abandoned in earlier period. Practical application results show that the supporting effect of π-shaped steel beam is better, and it can adapt to the conditions of close overlying goaf. There are no roof collapse and roof leakage accidents during mining. It has better economic and social benefits.
引文
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[4]粱国栋,段茂才,张殿明,等.π型钢梁炮采放顶煤采煤技术[J].矿山压力与顶板管理,2005(02):38-40.
[5]邵学峰,王树斌,孟宪亮.单体π型钢梁支护浅析[J].煤矿开采,2003(04):53-54.
[2]王学奎.π型钢炮采放顶煤在复杂地质条件下的开采[J].煤炭技术,2006(05):54-56.
[3]苏循亭.高档工作面复合煤层开采矿山压力显现规律及控顶设计[J].黑龙江科技信息,2004(08):135.
[4]粱国栋,段茂才,张殿明,等.π型钢梁炮采放顶煤采煤技术[J].矿山压力与顶板管理,2005(02):38-40.
[5]邵学峰,王树斌,孟宪亮.单体π型钢梁支护浅析[J].煤矿开采,2003(04):53-54.