三维地震探采对比及再分析初探

Correlation and Reanalyzing of 3D Seismic Prospecting and Mining Information

寺河矿为一个千万吨级特大型现代化矿井,截止2006年底,矿井三维地震勘探面积已达51km2,目前采掘范围为二盘区和三盘区,面积分别为6.8km2和2.8km2。对比三维地震解释成果与矿井采掘区域实际揭露地质异常,发现早期的常规解释技术手段,在山区复杂地震地质条件下,勘探效果较差,难以满足高产高效矿井生产要求。建议根据采掘得到的相关煤层底板标高、补充钻孔数据、构造及异常数据,利用最新解释技术,在原有地震资料解释技术的基础上,重新进行层位标定,重点利用地震方差体解释技术及属性分析,更好地解释断层、陷落柱等地质异常,进而提高解释精度。

The Sihe coalmine is an oversized modem coalmine with capacity of 10 million tons per year. Up to the end of 2006, 3D seismic prospected area is 51km2, present mining blocks have Nos.2 and 3 panels with areas of 6.8km2 and 2.8km2 respectively. Contrast 3D seismic prospecting interpreted results and mining block practical revealed geological anomalies have found rather poor effects of early stage conventional interpretation technological means under complex seismic-geologic conditions are hard to meet requirements of high yield and high efficiency coalmines. It is advised that according to mining acquired coal seam floor elevation, additional borehole data, structure and anomaly data, through the use of up to date interpretation technologies afresh horizon standardizing upon original interpretation, put emphases on seismic variance volume interpretation technology and attribute analysis, to interpret geologic anomalies of fault and subsided column better, thus to improve interpretation accuracy.