矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
4期
15-17,21
,共4页
高位钻孔%垮落带%断裂带%瓦斯抽采%数值模拟
高位鑽孔%垮落帶%斷裂帶%瓦斯抽採%數值模擬
고위찬공%과락대%단렬대%와사추채%수치모의
high-level borehole%caving zone%fractured zone%gas drainage%numerical simulation
研究覆岩裂隙及离层的分布状态，是掌握采空区瓦斯流动规律并最终进行采空区瓦斯抽放的前提。以实验室岩体力学的测试结果为基础，结合福胜煤矿1201综采工作面地质与开采条件，采用ANSYS软件，构建采场弹塑性模型，研究了采场围岩应力、采动裂隙场分布规律，以及围岩破断空间分布特征，模拟出1201工作面的“三区”及“三带”分布情况，并对1201综采工作面顶板高位钻孔的布孔方式及参数进行了优化，可取得较好的瓦斯抽采效果。
研究覆巖裂隙及離層的分佈狀態，是掌握採空區瓦斯流動規律併最終進行採空區瓦斯抽放的前提。以實驗室巖體力學的測試結果為基礎，結閤福勝煤礦1201綜採工作麵地質與開採條件，採用ANSYS軟件，構建採場彈塑性模型，研究瞭採場圍巖應力、採動裂隙場分佈規律，以及圍巖破斷空間分佈特徵，模擬齣1201工作麵的“三區”及“三帶”分佈情況，併對1201綜採工作麵頂闆高位鑽孔的佈孔方式及參數進行瞭優化，可取得較好的瓦斯抽採效果。
연구복암렬극급리층적분포상태，시장악채공구와사류동규률병최종진행채공구와사추방적전제。이실험실암체역학적측시결과위기출，결합복성매광1201종채공작면지질여개채조건，채용ANSYS연건，구건채장탄소성모형，연구료채장위암응력、채동렬극장분포규률，이급위암파단공간분포특정，모의출1201공작면적“삼구”급“삼대”분포정황，병대1201종채공작면정판고위찬공적포공방식급삼수진행료우화，가취득교호적와사추채효과。
Studying the distribution state of cracks and bed separations of the overburden strata is a pr-requisite to master the gas flow rule in the gob and finally carry out gas drainage from the gob. In this paper, based on the test results of rock mechanics in the laboratory, combining with the geologic and mining conditions in No. 1201 fully mechanized working face in Fusheng Mine and using ANSYS software, an elastic-plastic stope model was established, research was made on the distribution regularity of the stope surrounding rock stress and the mining crack field as well as the distribution characteristics of the surrounding rock's fracturing space, the distribution of the“three-area” and“three-zone” in No. 1201 working face was simulated, the arrangement and parameters of high-level boreholes in the roof of this face were optimized, so better gas drainage effect can thus be obtained.
