大型导水陷落柱发育特征综合探查技术研究

Comprehensive exploration technology for development characteristics of large-scale water-flowing collapse column

为了查明大型导水陷落柱发育边界及其破碎体胶结程度分布特征,利用井上下物探综合探查技术探明了大型导水陷落柱的分布位置及大致范围,利用基于地面定向水平钻的钻速录井、钻井液消耗量、岩屑录井、随钻测井等综合探查技术手段,通过数据统计分析,查清了导水陷落柱的发育边界范围、破碎体胶结情况及其分布特征。结果表明:导水陷落柱长短轴为410m×200m,陷落柱内破碎体靠近工作面运输巷突水点前方区域胶结程度差,空洞、孔隙等发育,为陷落柱导水主通道区。井上下综合物探和基于地面定向水平钻陷落柱综合探查成果为注浆治理提供了依据,同时为其他类似构造综合探查提供了很好的借鉴意义。

In order to find out the development boundary and the distribution characteristics of the cementation degree of the broken body of the large-scale water-flowing collapse column, the locations and the approximate range of the large-scale water-flowing collapse column are found out using integrated surface and underground geophysical exploration technology.The development boundary, cementation and distribution characteristics of the fractured body of the water flowing collapse column are found out by means of comprehensive exploration techniques such as surface-oriented horizontal penetration rate logging, drilling fluid consumption, cuttings logging and logging while drilling, and through data statistical analysis.The length and short axis of the collapse column is 410 m×200 m.The fractured body in the collapse column is close to the water inrush point in the belt of the working face.The results of surface and underground comprehensive geophysical exploration and comprehensive collapse column exploration of based on ground horizontal directional drilling provide a basis for grouting treatment and a good reference for other similar structures.