弱胶结煤层覆岩抗采动变形能力差，高强度开采形成的采动裂隙易导通强富水含水层，在近距离强富水含水层下综放开采具有极大的危险性，常发生突水溃砂事故。为了实现强富水含水层下综放开采水砂灾害的安全防控，研究了基于水文地质条件精细探查、覆岩破坏高度的实测与监测、煤层采放高度设计与实时调整的突水溃砂灾害防控关键技术。提出基于网络并行电法和井下加密钻探的精细化探查组合方法以查明工作面开采的水文地质条件;采用经验公式预计、数值模拟计算、钻孔注水法实测以及电-震一体化监测等手段获取动、静态综放开采的覆岩破坏高度特征;通过控制煤层采放高度、优化工作面两巷在煤层中的位置、电-震一体化监测覆岩破坏高度反算煤层采放高度等方法达到及时调控煤层采放高度的目的。以应用工作面为例，采用并行电法、钻探验证，覆岩破坏高度实测以及煤层采放高度的精准控制等方法，基于地质条件探查与分析，动态控制了煤层覆岩的采动破坏范围，实现了工作面在近距离强富水含水层下的综放安全开采。研究表明，物探、钻探探测可有效获取水文地质信息以及综放开采覆岩破坏的关键参数，将采动裂隙场与水文地质条件相结合，控制煤层采放高度，对不同含水层采取疏或保的不同对策，实现了强含水层下综放安全开采。

Fully mechanized coal caving mining under the nearby rich water aquifer is very dangerous for the reason that the overburden of weakly consolidated coal seam has poor resistance to mining deformation and fracture caused by high intensity mining is easy to permeate the aquifer,which usually results in water-sand inrush. In order to realize the accurate prevention and control of water-sand disaster in fully mechanized caving mining under rich water aquifer,prevention and control technology of water-sand inrush disaster based on fine exploration of hydrogeological conditions,measurement and monitoring of overburden failure height,design and real-time adjustment of mining and caving height of coal seam is studied. A combination of fine exploration based on net parallel electrical method and encryption drilling is proposed to find out the hydrogeological conditions of mining working face. The overburden failure height characteristics of dynamic and static fully mechanized caving mining were obtained by using the empirical formula prediction,numerical simulation,measurement of borehole water injection method and the integrated monitoring of electricityseismic. By controlling the mining and caving height of coal seam,optimizing the position of two roadway in working face,inverse computation of mining and caving height by monitoring overburden fracture height using electricity-seismic,the mining and caving height of coal seam can be real-time adjusted. Taking the application working face as example,the method of parallel electricity,drilling testing,measurement of overburden failure height and precise control of mining and caving height of coal seam is adopted to dynamically control overburden failure range and realize fully mechanized caving safety mining under nearby rich water aquifer. The results show that hydrogeological information and the key parameters of overburden failure in fully mechanized mining can be effectively got by geophysical prospecting and drilling detection. Fully mechanized mining under nearby water rich aquifer can be safely conducted by combination the mining fracture with hydrogeologic conditions,controlling the mining and caving height,different measurements being taken to dewater or protect different aquifer.