小保当煤矿风积沙松散层三维地震地质特征研究  

Research on 3D Seismic Geological Characteristics of Windblown Sand Loose Layer in Xiaobaodang Coal Mine

作　　者：杨彪 麻银斗 侯晓冰 Yang Biao;Ma Yindou;Hou Xiaobing(Shaanxi Xiaobaodang Mining Industry Co.,Ltd.,Shaanxi Yulin 719000)

机构地区：[1]陕西小保当矿业有限公司,陕西榆林719000

出　　处：《山东煤炭科技》2024年第7期108-113,共6页Shandong Coal Science and Technology

摘　　要：小保当一号矿井地形起伏较大,地质构造复杂多变,传统勘探技术难以满足该矿井全方位勘查的需要,严重制约矿井的安全高效生产。以该矿井首采区地质条件为研究背景,综合应用理论分析、现场试验以及现场勘探等方法,判定矿井风积沙松散层首采区为地震勘探地质一般区,得出了影响该区域内三维地震勘探的影响因素为地形因素、激发因素以及接收因素,制定了适用于风积沙松散层三维地震勘探方案,查明了勘探区内风积沙松散层厚度在50~115 m之间变化,南部最厚达到115 m;勘探区内各煤层厚度整体表现为由西北向东南逐渐变厚的变化趋势,煤层总体呈向北西倾斜的单斜形态;勘探区内2^(-2)、5^(-2)煤层共有9条断层且均为正断层,其中落差大于5 m的断层2条。The terrain of Xiaobaodang No.1 Mine is undulating greatly and the geological structure is complex and variable.Traditional exploration techniques are difficult to meet the needs of omni-directional exploration of the mine,which seriously restricts the safe and efficient production of the mine.Taking the geological conditions of the first mining area of the mine as the research background,theoretical analysis,on-site testing,on-site exploration and other methods are comprehensively applied to judge and determine that the first mining area of the windblown sand loose layer in the mine is a general geological area for seismic exploration.The influencing factors of influencing 3D seismic exploration in this area are obtained to be terrain factors,excitation factors,and reception factors.A 3D seismic exploration scheme suitable for the windblown sand loose layer is formulated,and the thickness of the windblown sand loose layer in the exploration area varies between 50-115 m is ascertained.The thickest layer in the south reaches 115 m;The overall thickness of each coal seam in the exploration area shows a changing trend of gradually thickening from northwest to southeast,and the coal seams generally show a monoclinic shape inclined towards northwest;There are total 9 faults in 2^(-2) and 5^(-2) coal seams in the exploration area,all of which are normal faults,including 2 faults with a drop of more than 5 m.

关 键 词：风积沙松散层 三维地震勘探 松散层厚度 煤层厚度 断层 

分 类 号：P631.4[天文地球—地质矿产勘探]