本文選題：不明積水 + 采空區(qū)突水　； 參考：《煤炭科學(xué)技術(shù)》2017年08期

【摘要】：針對整合礦井上覆不明采空區(qū)工作面易發(fā)生老空水害的工程難題,以重組整合礦井勝利煤礦太原組10號(hào)煤層開采為例,運(yùn)用力學(xué)模型分析、經(jīng)驗(yàn)公式計(jì)算以及數(shù)值模擬方法,綜合分析研究了10號(hào)煤層及上覆6號(hào)、2號(hào)煤層開采后的導(dǎo)水裂隙帶高度、底板破壞帶深度情況。研究結(jié)果表明:10號(hào)煤層及上覆6、2號(hào)煤層開采后的最大導(dǎo)水裂隙帶高度分別是54.94、30.49、33.67 m,最大底板破壞帶深度分別是12.24、3.12、1.25 m,基于其相對空間位置,判斷出2號(hào)煤層采空區(qū)積水不會(huì)影響10號(hào)煤層開采,而6號(hào)煤層采空區(qū)積水會(huì)直接進(jìn)入10號(hào)煤層,對10號(hào)煤層安全生產(chǎn)造成重大影響;利用調(diào)查資料、地面物探、井下物探相結(jié)合的方法對6號(hào)煤層不明采空區(qū)積水范圍進(jìn)行了精準(zhǔn)確定,為后續(xù)鉆探放水提供了依據(jù),為相似工程條件下上覆采空區(qū)突水危險(xiǎn)性分析及積水范圍探測提供借鑒。
[Abstract]:In view of the engineering problem that the workface of overlying and unknown goaf of integrated mine is prone to old goaf water hazard, taking the mining of No. 10 coal seam of Taiyuan formation in Shengli coal mine as an example, the mechanical model analysis, empirical formula calculation and numerical simulation method are used. The height of water conduction fracture zone and the depth of floor failure zone after mining in No. 10 seam and No. 6 and No. 2 coal seams are comprehensively analyzed and studied. The results show that the maximum fracture zone height of No. 10 coal seam and coal seam No. 6 and coal seam No. 2 after mining is 54.94 ~ 30.49 ~ 33.67 m, respectively, and the depth of maximum floor failure zone is 12.24 ~ 3.121.25 m, which is based on its relative spatial position. It is concluded that the water in goaf of No. 2 coal seam will not affect the mining of No. 10 coal seam, while the water in goaf of No. 6 coal seam will enter coal seam 10 directly, which will have a significant impact on the safety production of coal seam No. 10. The method combined with geophysical exploration can accurately determine the range of water accumulation in unknown goaf of No. 6 coal seam, which provides the basis for subsequent drilling and releasing water, and provides a reference for the risk analysis of water inrush in overlying goaf under similar engineering conditions and the detection of water accumulation range.
【作者單位】： 大同煤礦集團(tuán)有限責(zé)任公司;
【分類號(hào)】：TD745.2
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本文編號(hào)：1891159