近距离煤层群上覆采空区探放水技术研究

Study on the technology of water detection and water release in overlying goaf of close distance coal seams

为了更好地掌握工作面前方层间距,做出科学、合理的防护措施,本文通过地面物探与井下物探对工作面积水隐患进行了探测,并结合工作面水文地质资料,有针对性的对探放水方案进行了设计研究,并对近距离煤层上覆采空积水进行了超前探放。事实证明,超前探孔方式探放近距离煤层上覆采空区积水是可行的,该技术手段不仅超前排除了工作面积水隐患,避免了近距离煤层掘进过程中因积水压塌顶板而造成的透水事故,还为近距离煤层的采、掘提供了精确的煤层层间距数据,为工作面安全回采提供了宝贵资料。

in order to better master the front layer spacing, make scientific anti reasonable protection measures, the ground and undergroundgeophysical prnspeeting exploration was carried out to detect the water hazards of wnrkingfaee, and combined with the working face of thehydrologieal and geological data on the water solution is studied and designed, and the close distance coal seam water exploration overburdenof goaf was advanced accumulated. In fact, the way of drilling exploration of close distance coal seam overlying go＇M＂ water is feasible, thetechnique not only eliminates the lead accumulated water hazards, avoid the short distance caused by water to collapse the roof of coal seam inthe process of excavation for flooding accident, provides accurate the coal seam spacing distance date for mining and excavation, providevaluable materials for the safe mining of working face.