本文選題：數(shù)值模擬 + 堅(jiān)硬頂板煤層群�。� 參考：《煤礦安全》2016年05期

【摘要】：采用FLAC~(3D)數(shù)值模擬軟件建立了大同礦區(qū)煤層群開(kāi)采的數(shù)值模型,模擬研究了煤層群開(kāi)采時(shí)覆巖導(dǎo)水?dāng)嗔褞У陌l(fā)育過(guò)程,分析了3-5~#煤層導(dǎo)水?dāng)嗔褞Оl(fā)育高度與煤厚、工作面長(zhǎng)度的關(guān)系。模擬結(jié)果顯示:堅(jiān)硬頂板下近距離煤層群下行開(kāi)采,隨采動(dòng)次數(shù)增加覆巖導(dǎo)水?dāng)嗔褞Ц叨仍黾拥姆戎饾u減小;隨煤層厚度的增加,3-5~#煤導(dǎo)水?dāng)嗔褞Ц叨仍黾?當(dāng)煤厚13 m時(shí),其增幅變大;隨工作面長(zhǎng)度的增加,3-5#煤導(dǎo)水?dāng)嗔褞Ц叨仍黾?當(dāng)工作面長(zhǎng)度190 m時(shí),導(dǎo)水?dāng)嗔褞г龇鶞p小;煤厚為15 m時(shí),將工作面長(zhǎng)度縮短至180 m時(shí)可確保3-5~#煤的導(dǎo)水?dāng)嗔巡慌c15#煤采空區(qū)貫通。
[Abstract]:The FLAC~ (3D) numerical simulation software is used to establish the numerical model of Coal Seam Group Mining in Datong mining area. The development process of the overlying water diversion fracture zone in the coal seam group mining is simulated and studied. The relationship between the development height of the water diversion fracture zone of the coal seam and the length of the working face is analyzed. The simulation results show that the close range coal seam under the hard roof is down. With the increase of coal mining, the height of the overburden fracture zone gradually decreases with the increase of coal seam thickness, the height of the 3-5~# coal guide water fracture zone increases. When the coal thickness is 13 m, the increase of the height increases. With the increase of the length of the working face, the height of the 3-5# coal guide water fracture zone increases. When the length of the working face is 190 m, the increase of the water guide fracture zone decreases; the coal thickness is reduced; the coal thickness is reduced. When the length of the working face is shortened to 180 m at 15 m, the water conductivity fracture of 3-5~# coal can not be connected with the goaf of 15# coal.
【作者單位】： 山東科技大學(xué)礦山災(zāi)害預(yù)防控制省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51574154,51344009) 山東省優(yōu)秀中青年科學(xué)家科研獎(jiǎng)勵(lì)基金資助項(xiàng)目(BS2012NJ007) 礦山災(zāi)害預(yù)防控制省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地開(kāi)放課題基金資助項(xiàng)目(MDPC2013KF12)
【分類(lèi)號(hào)】：TD823.85;TD745

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