Predicting on inrush of sand of mining under loosening sandstone aquifer;

Mining damage caused by de-watering of aquifer and Karst collapse;

Grouting transform technique of aquifer in coal bed floor in Hanwang Coal Mine;

The author combinedtheory of three zones with practice,presented that the flooding foof aquifers include all aquifers above coal seam and below separation layer.

Isotope and geochemistry techniques are increasingly used in evaluating the hydraulic connecting between groundwater in different aquifers to improve the hydrogeology database.

Using the materials obtained from the pumping tests and the water level recentralizing tests,thecoefficients of permeability of the shallow loose aquifers of many places in Huainan Coal Mine area are calculated.

By the analysis of hydrogeological general situation in Xinhua area,analyses the rock feature,thickness,buried conditions of direct water-bearing layers,and growing and distribution of water-bearing space.

Because of the complex hydrogeologic condition of Zhaozhuang Coal Mine, inclined main shaft needs to cross several thick-sandstone water-bearing layers.

The determination of exploration range and the division of water-bearing layer and water-resisting layer in thick limestone stratum are essential issues related to hydrogeological exploration in mine area.

Study on the loss of gas storage capacity of underground gas storage in aquifer;

After the heavy curtain was constructed the special hydrological geology character of limestone double-aquifer in heavy curtain was formed with branched mineral mass for common waterproof.