Channel Wave Seismic Exploration Technology in the Thinning Area of Extremely Thick Coal Seams
吴章涛1WU Zhang-tao;杨帆YANG Fan
①陕西彬长小庄矿业有限公司,咸阳713600;
②陕西彬长矿业集团有限公司,咸阳713600
①Shaanxi Binchang Xiaozhuang Mining Co.,Ltd., Xianyang 713600, China ;
②Shaanxi Binchang Mining Group Co.,Ltd., Xianyang 713600,China
摘要;煤层厚度的剧烈变化严重制约综放工作面正常回采,为有效查明煤层厚度变化大且没有规律、难以有效查明问题,查阅文献针和回采工作面煤层实际情况,利用透射槽波穿过煤厚变薄区时能量衰减明显原理,因此可以利用槽波能量衰减成像技术对煤层厚度变化进行探查。采用地震槽波透射法对40302-工作面进行煤厚探查,结果表明通过理论频散曲线分析、频率域提取旅行时、层析成像和煤厚拟合,绘制煤层等厚线图,经回采验证,回采过程中揭露的煤层厚度与本次勘探成果基本一致,为制定矿井月度生产计划和尽量多回收资源提供了依据。
Abstract: The drastic changes in coal seam thickness seriously restrict the normal recovery of fully mechanized top coal cavingworking faces. In onler to effectively identfy the large and irregular changes in coal seam thickness， which are difficult to effectivelyidentify problems, literature review is conducted based on the actual situation of the coal seam in the miming working face. Tlhe principle ofsignificant energy attenation is used when transmitted trough waves pass through the coal thickness thinning area. Therefore, trough waveenergy attenuation imaging technology can be used to explore the changes in coal seam thickness. The seismic trough wave transmissionmethod was used to explore the coal thickness of the 40302 working face. Through theoretical dispersion curve analysis, frequency domainextraction of travel time, tomography, and coal thickness itting, a coal seam contour map was drawn. After mining verification, the exposedcoal seam thickness during the mining process was basically consistent with the exploration resuls, providling a basis for formulating themonthly production plan of the mine and maximizing resource recovery.
关键词:回采工作面;透射槽波;煤厚变化;层析成像
Key words: mining face; transmission groove wave; change in coal thickness; tomographic imaging
价值工程-文章出处：吴章涛,杨帆.巨厚煤层变薄区槽波地震勘探技术[J].价值工程,2023,42(22):84-86. |
