This technology is mainly composed of hydrogeological mapping, drilling, testing, geophysical exploration, geochemical exploration, remote sensing, etc. It serves the exploration of hydrogeological conditions before coal mine construction, supplementary exploration of hydrogeology in production stage and exploration of special problems such as mine water filling sources and passages, and is an essential technical means to study the formation conditions of mine water disasters. Among them, drilling is also a necessary means to form holes such as drainage drilling and grouting drilling.

2. Seepage theory and calculation of mine water inflow

The calculation of mine water inflow is based on groundwater seepage theory. In practical application, it can be divided into two categories: normal water consumption calculation and maximum water inflow calculation.

(1) Based on the traditional seepage theory, various mathematical methods have been widely used in the calculation of mine water inflow, but most of them are not mature enough.

(2)2D numerical simulation method and 3D numerical simulation method are the highest level of calculation and application of mine water inflow at present.

(3) The theory is seriously out of touch with the practical application, and many mining areas still mainly use rough hydrogeological analogy method.

3. The formation mechanism of mine water disaster

Deepening the understanding of the formation mechanism of mine water disaster, especially the mechanism of floor water inrush and its control influencing factors, is an important theoretical basis for mine water disaster prevention and control, and is also one of the hot spots in current research. Because the hydrogeological conditions in Linnancang mining area are complex and quite different, it is necessary to conduct in-depth or universal research on hydrogeological laws.

4. Water inrush prediction and early warning technology

Prediction and early warning of mine water inrush is of great significance to mine water disaster prevention and control. If the possible water inrush accident can be accurately predicted, the mine water prevention and control work will undergo revolutionary changes. Realizing the early warning of outburst precursors is the expected goal of mine water inrush prediction and early warning research. By monitoring the changes of related parameters of water inrush precursor factors, the standard identification model of water inrush is established to judge the occurrence of water inrush and send out early warning signals in time.

5. Post-disaster control technology of mine water disaster

Post-disaster treatment technology after mine water inrush mainly includes rapid identification technology of water inrush source, water inflow estimation method, high-precision positioning drilling implementation technology, grouting plugging technology of water inrush channel and so on.

6. Comprehensive utilization technology of mine water

The traditional mine water disaster prevention and control work pays full attention to the disastrous side of water and ignores the resource side of water. Academician Qian put forward the concept of "green mining" according to the concept of coordinated development of resources and environment, which has formed a wide and important influence. Protective exploitation of water resources is one of the main contents of "green exploitation", that is, while preventing mine water disasters, we must pay attention to the protection and utilization of water resources.

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