三河煤矿采空区地面塌陷地质灾害调查钻探技术

Application of Drilling Technology for Geological Disaster Investigation of Goaf Collapse Area

摘要:

针对河北三河煤矿采空塌陷区内地层破碎、岩石软硬不均、钻进泥浆漏失严重、钻进效率低、岩心采取难等问题，采取了一系列钻探技术方法，在确保岩心钻探工程质量的前提下提高了钻进效率。为初步查明三河煤矿开采区地面塌陷范围、发育特征、危害程度等，提供了准确、翔实的地质资料；为开发利用煤矿采空塌陷区及下步勘查和城乡规划提供了依据。 关键词：煤矿采空塌陷区；岩心钻探；钻探工程质量

Abstract:

According to the problems of stratum broken, uneven rock hardness, serious drilling mud leakage, low drilling efficiency and difficult coring in Sanhe coal mine goaf subsidence area of Hebei, a series of drilling technical methods were adopted to improve drilling efficiency on the premise of ensuring the quality of core drilling engineering. The accurate and detailed geological data are provided for preliminarily ascertaining the scope of ground subsidence of Sanhe coal mining area, the development characteristics and harm degree, which can be the basis for the development and utilization of coal mine goaf subsidence area and the next exploration and urban & rural planning.