地震波CT技术探测煤层上覆岩层破坏规律
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摘要
利用地震波CT技术进行煤层上覆岩层破坏规律探测,从测试原理、工作方法及资料解释等方面阐述了孔-巷间地震波CT探测技术,并通过煤矿上提工作面观测实例,进一步说明该方法进行上覆岩层破坏观测及判定的准确性和可行性。研究表明,与传统方法相比,地震波CT技术观测成果具动态性,且经济、直观,达到高精度和高分辨的精细要求,其结果实用可靠。
The observation of overburden failure is a key issue of safe production in coal mines. The general methods have certain defects. A new observation method for overburden failure by CT technique of seismic wave is introduced in the paper. The principle of dynamic detection,the operation methods and data analysis of CT technique of seismic wave between bore hole and gateway are discussed. The validity and feasibility of the dynamic detection of overburden failure are explained by an example of working face. The results show that the CT technique of seismic wave can detect the overburden failure dynamically with lower cost,higher accuracy and higher resolution than those with conventional methods.
The observation of overburden failure is a key issue of safe production in coal mines. The general methods have certain defects. A new observation method for overburden failure by CT technique of seismic wave is introduced in the paper. The principle of dynamic detection,the operation methods and data analysis of CT technique of seismic wave between bore hole and gateway are discussed. The validity and feasibility of the dynamic detection of overburden failure are explained by an example of working face. The results show that the CT technique of seismic wave can detect the overburden failure dynamically with lower cost,higher accuracy and higher resolution than those with conventional methods.
引文
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12邱庆程,李伟和.跨孔地震CT层析成像在岩溶勘察中的应用[J].物探与化探,2001,25(3):236～240
2尹增德,李伟,王宗胜.兖州矿区放顶煤开采覆岩破坏规律探测研究[J].焦作工学院学报,1999,18(4):235～238
3程久龙.岩体破坏弹性波CT动态探测试验研究[J].岩土工程学报,2000,22(5):555～568
4程久龙,刘斌,于师建等.覆岩破坏直流电场特征数值计算[J].计算物理,1999,16(1):54～58
5赫尔曼.由投影建图像:CT的理论基础[M].北京:科学出版社,1985
6杨文采,李幼铭.应用地震层析成像[M].北京:地质出版社,1993
7刘盛东,李承华.地震走时层析成像算法与比较[J].中国矿业大学学报,2000,29(2):211～214.
8WatanabeT,Sa ssaK.Seismi cattenuati on tom og raphybyus eofamplitud eat tenua tionandpulsebroadening[A].In:Expa ndedAbstr actof63rdSEGMe eting[C ].[s.l.]:[s.n.],1993,336
9Frie delMJ,Scot tDF, Jacks onMJ,etal. 3Dtomog ra phyimagin gofano malousstre ss c onditi onsi nadeepUSgoldmin e[J].JournalofAppliedGeophysics,1996,36(1):1～17
10李承华.矿区小型断裂构造地震透射CT探测技术研究[硕士学位论文][D].淮南:淮南工业学院,1998
11杨文采.地震层析成像在工程勘探中的应用[J].物探与化探,1993,17(3):182～192
12邱庆程,李伟和.跨孔地震CT层析成像在岩溶勘察中的应用[J].物探与化探,2001,25(3):236～240
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