摘要
定向钻进技术是煤矿掘进和开采中用于探放水的有效手段。鉴于陕北天云煤矿主斜井掘进区域存在3个含水层威胁,为了给井筒掘进提供安全保障,采用螺杆马达定向钻进结合回转钻进钻探技术,同时配合瞬变电磁探测物探技术,探查井筒掘进范围内含水层富水性,查明井筒中心线周围直径30 m范围内的含水层富水性,最后对物探发现的异常区施工补充钻探,加强探放。钻探结果表明,天云煤矿主斜井掘进影响范围内,三叠系瓦窑堡组基岩含水层富水性弱、静储量少、动态补给量小,发现局部富水区,含水层对井筒掘进影响程度小。物探结果表明,斜井井筒掘进中心周围直径30 m范围内无明显的低阻异常区,表明三叠系瓦窑堡组基岩含水层富水性弱,对井筒掘进影响小。
Directional drilling technology is an effective means for exploring and releasing water in coal mine excavation and mining.There are three aquifer threats in the excavation area of the main inclined shaft of Tianyun Coal Minei.In order to provide safety assurance for shaft excavation,this article adopts screw motor directional drilling combined with rotary drilling and transient electromagnetic detection geophysical technology to explore the water richness of the aquifer in the excavation area of the shaft,identify the water richness of the aquifer within a diameter range of 30m around the center line of the shaft.Finally,supplement drilling with construction is carried out for the abnormal areas discovered by geophysical exploration to strengthen exploration and drainage.The drilling results show that within the influential range of the main inclined shaft excavation,the aquifer of the Triassic Wayaobao Formation bedrock has weak water richness,low static reserves,and small dynamic recharge.In order to discover local water rich areas,the impact of the aquifer on the shaft excavation is small.The geophysical results show that there is no obviously low resistance anomaly area within a diameter range of 30 m around the excavation center of the inclined shaft,indicating that the aquifer of the Triassic Wayaobao Formation bedrock has weak water richness with little impact on the excavation of the shaft.
作者
陆守培
王晓卫
LU Shoupei;WANG Xiaowei(Hengshan Tianyun Coal Mine Co.,Ltd.,Yulin 719000,China)
出处
《陕西煤炭》
2024年第5期35-40,45,共7页
Shaanxi Coal
关键词
定向钻进技术
斜井掘进
超前探放水
瞬变电磁探测技术
directional drilling technology
inclined shaft excavation
advanced water exploration and drainage
transient electromagnetic detection technology
作者简介
陆守培(1980-),男,江苏盐城人,工程师,现从事煤矿安全生产管理及技术研究。
