许疃矿3234工作面“两带”高度数值模拟研究
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摘要
为了准确划分许疃矿顶板"两带"的高度,基于现场监测和数值模拟的方法,采用FLAC3D软件,研究了3234工作面上覆煤岩层裂隙发育规律,并通过现场实测和规程计算对数值模拟分析结果进行了验证。研究结果表明:规程计算、现场实测和数值模拟得出的冒落带高度分别为8.3m,8-8.5m,8.1m,裂隙带高度分别为39.3m,32.5m,29-32.1m;上覆岩层呈现典型的"凸"型破坏特征;现场监测、规程计算与数值模拟的顶板"两带"发育高度基本吻合。
In order to measure the height of roof ‘two belts' in Xutuan mine, the author studied the fracture development law in overlying strata of 3234 working face by adopting FLAC3 D software based on site monitoring and numerical simulation. The simulation results were verified by site measurement and regulation calculation.The result showed that the height of caving zone is 8.3m, 8-8.5m, 8.1m respectively measured by regulation calculation, practical measurement and numerical simulation. At the same time, the height of fracturation zone is39.3m,32.5m,29-32.1m, respectively. The overlying strata showed a typical convex characteristics. The results of site measurement, regulation calculation and numerical simulation were basically matched with the development height of roof ‘two belts'.
In order to measure the height of roof ‘two belts' in Xutuan mine, the author studied the fracture development law in overlying strata of 3234 working face by adopting FLAC3 D software based on site monitoring and numerical simulation. The simulation results were verified by site measurement and regulation calculation.The result showed that the height of caving zone is 8.3m, 8-8.5m, 8.1m respectively measured by regulation calculation, practical measurement and numerical simulation. At the same time, the height of fracturation zone is39.3m,32.5m,29-32.1m, respectively. The overlying strata showed a typical convex characteristics. The results of site measurement, regulation calculation and numerical simulation were basically matched with the development height of roof ‘two belts'.
引文
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[4]胡水根,张平松.海量拟震法三极数据探测采煤裂隙带高度[J].水文地质工程地质,2011,38(4):106-110.
[5]张平松,李永盛,胡雄武.巷道掘进直流电阻率法超前探测技术应用探讨[J].地下空间与工程学报,2013,9(1):135-140.
[6]张平松,胡雄武,吴荣新.岩层变形与破坏电法测试系统研究[J].岩土力学,2012,33(3):952-956.
[7]唐辉明,晏鄂川,胡新丽.工程地质数值模拟的理论与方法[M].武汉:中国地质大学出版社,2001.
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