官地矿切顶卸压沿空留巷聚能爆破现场试验研究
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摘要
为了确定110工法的合理爆破参数并实现安全沿空留巷的目的,以官地矿中厚煤层12605工作面为研究背景,采用理论分析和现场研究相结合的方法,对比分析了三种不同装药结构条件下的试验爆破效果。结果表明,在爆破孔深7m、炮孔间距500mm的情况下,由孔顶到孔底依次为"4+3+2+1"装药方式对顶板破坏严重,"3+2+2+1"的装药方式切缝效果较差。而采用"3+3+2+1"的装药方式,爆破孔内裂缝明显发育,裂缝率达到87%。满足留巷设计要求,现场应用效果良好。
In order to explore reasonable blasting parameters of 110 mining method and achieve the goal of successful and safe roadway retaining,taking the medium-thick seam 12605 working face of Guandi Coal Mine as the research background,three different charging structures were compared and analyzed by means of theoretical analysis and field research. The test blasting effect under the condition. The results show that under the condition of 7 m blasting hole depth and 500 mm blasting hole spacing,the roof is seriously destroied with 4+3+2+1 charge( from the top to bottom of the hole),and the slitting effect is poor with 3+2+2+1 charge. With the 3+3+2+1 charging method,the cracks in the blasting hole develop obviously,and the crack rate reaches 87%,satisfying the design requirements of retaining roadway,and the field application effect is good.
In order to explore reasonable blasting parameters of 110 mining method and achieve the goal of successful and safe roadway retaining,taking the medium-thick seam 12605 working face of Guandi Coal Mine as the research background,three different charging structures were compared and analyzed by means of theoretical analysis and field research. The test blasting effect under the condition. The results show that under the condition of 7 m blasting hole depth and 500 mm blasting hole spacing,the roof is seriously destroied with 4+3+2+1 charge( from the top to bottom of the hole),and the slitting effect is poor with 3+2+2+1 charge. With the 3+3+2+1 charging method,the cracks in the blasting hole develop obviously,and the crack rate reaches 87%,satisfying the design requirements of retaining roadway,and the field application effect is good.
引文
[1]何满潮,宋振骐,王安,等.长壁开采切顶短壁梁理论及其110工法—第三次矿业科学技术变革[J].煤炭科技,2017(1):1-9,13.
[2]何满潮,朱国龙.“十三五”矿业工程发展战略研究[J].煤炭工程,2016,48(1):1-6.
[3]汤建泉,刘吉存,宋文军,等.切顶卸压沿空留巷预裂切缝技术指标研究[J].煤炭技术,2017,36(6):174-176.
[4]刘晨康,杨晓杰,王二雨,等.无煤柱自成巷聚能切缝技术研究[J].煤炭技术,2018,37(2):99-101.
[5]孙晓明,张勇,蔚保宁,等.无煤柱开采技术控制设计与应用分析[J].煤炭技术,2017,36(3):1-3.
[6]何满潮,马资敏,郭志飚,等.深部中厚煤层切顶留巷关键技术参数研究[J].中国矿业大学学报,2018,47(3):468-477.
[7]王亚军,杨军,高玉兵,等.切顶卸压沿空留巷动压承载临时支护技术研究[J].煤炭工程,2018,50(3):30-36.
[8]魏锦周,龙凤魁.晋能集团盖州煤业9102回风顺槽切顶卸压沿空留巷技术应用[J].山西煤炭,2017,37(5):35-37.
[9]毛怀勇.唐山沟煤矿切顶卸压沿空留巷无煤柱开采技术[J].煤炭工程,2016,48(8):12-14.
[10]杨晓杰,张民,王二雨.柠条塔煤矿大采高工作面切顶沿空留巷围岩变形机理研究[J].金属矿山,2018(1):172-177.
[2]何满潮,朱国龙.“十三五”矿业工程发展战略研究[J].煤炭工程,2016,48(1):1-6.
[3]汤建泉,刘吉存,宋文军,等.切顶卸压沿空留巷预裂切缝技术指标研究[J].煤炭技术,2017,36(6):174-176.
[4]刘晨康,杨晓杰,王二雨,等.无煤柱自成巷聚能切缝技术研究[J].煤炭技术,2018,37(2):99-101.
[5]孙晓明,张勇,蔚保宁,等.无煤柱开采技术控制设计与应用分析[J].煤炭技术,2017,36(3):1-3.
[6]何满潮,马资敏,郭志飚,等.深部中厚煤层切顶留巷关键技术参数研究[J].中国矿业大学学报,2018,47(3):468-477.
[7]王亚军,杨军,高玉兵,等.切顶卸压沿空留巷动压承载临时支护技术研究[J].煤炭工程,2018,50(3):30-36.
[8]魏锦周,龙凤魁.晋能集团盖州煤业9102回风顺槽切顶卸压沿空留巷技术应用[J].山西煤炭,2017,37(5):35-37.
[9]毛怀勇.唐山沟煤矿切顶卸压沿空留巷无煤柱开采技术[J].煤炭工程,2016,48(8):12-14.
[10]杨晓杰,张民,王二雨.柠条塔煤矿大采高工作面切顶沿空留巷围岩变形机理研究[J].金属矿山,2018(1):172-177.