International Journal of Earth Sciences and Engineering

Herong Gui ¹, D. Venkat Reddy ², Linhua Sun ¹

Affiliations
1 School of Earth Science and Engineering, Suzhou University, Suzhou, Anhui-234000, CN
2 Department of Civil Engineering, National Institute of Technology Karnataka (NITK), Surathkal, Srinivasnagar, Mangalore, DK, IN

Abstract

The complex hydrogeological conditions in China coalmines have created a number of inherent water hazards. In the over 60 years of efforts in water hazards control, rich experiences have been accumulated in technology engineering. This article focuses on the major development stages and illustrates current applications of the key technologies in hydrological drilling, grouting and water plugging, and geophysical and geochemical prospecting, as well as the direction for future development, which can provide reference and facilitate communications with coalmines under similar conditions across the world.

Keywords

Coalmine Water Hazards, Water Hazards Control Technology, Water Inrush Mechanism, China.

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S. M. Ramasamy ¹, D. Venkat Reddy ²

Affiliations
1 School of Marine Sciences, Alagappa University, Katraikudi-623003, IN
2 Department of Civil Engineering (Retd.), National Institute of Technology Karnataka, Surathkal, Mangalore-575025, IN

Abstract

The water resources management has ever remained an issue of major challenge due to the exponential population explosion and the inadequacy of the available surface water resources to cope up to the Man’s growing demands. These triggered manifold explorations to hunt for more water resources, especially the ground water reservoirs and develop plans for managing them. Though many tools and techniques have all along been used, it is only the Geomatics technology, comprising dominantly the Remote Sensing and GIS, has proved its advanced proficiencies in providing newer insights into the issues of water resources. But still there is hierarchy of issues in water resources and we will have to go a long way in capitalising the virtues of Geomatics technology. The paper deals with some of the advanced proficiencies of Geomatics technology and how precisely it can provide solutions in ground water related issues when this technology is used appropriately following the fool proof protocols.

Keywords

Geomatics, Rock Type Mapping, Tectonic and Geomorphic Analysis, Ground Water Mapping.

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Herong Gui ¹, D. Venkat Reddy ², Linhua Sun ³

Affiliations
1 School of Earth Science and Engineering, Suzhou University, Suzhou, Anhui-234000, CN
2 Department of Civil Engineering, National Institute of Technology Karnataka (NITK), Surathkal, Srinivasnagar, Mangalore, DK, IN
3 National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, Anhui-234000, CN

Abstract

Pore aquifer water is one of the major hazards in China’s coalmines, causing severe pit flooding and human casualties. This article analyses the two types of water conduits, pre-existing and man-made, that are culpable to water-sand inrush when mining undertakes in pore aquifers. It also describes four patterns of inrush mechanisms: 1) water-sand inrush when mining-caused caving zone and water-conductive fissures channelling pore aquifer through pre-existing conduits, such as water-conductive faults;2) water-sand inrush when mining-caused water-conductive fissures channelling pore aquifer; 3) water-sand inrush when mining-caused caving zone channelling pore aquifer; 4) when mining undertakes in steeply inclined coal seam, the water-resistant coal pillar caves and leads to water-sand inrush. This article has also studied the effect of the particles size distribution of pore aquifer on the rheological properties of water-sand by permeation tests. The purpose of this review is to concisely summarize and provide references for countries confronting similar problems and to facilitate international discussions on pore water control.

Keywords

Pore Aquifer, Water-Sand Inrush Conduits, Water-Sand Inrush Patterns, Permeation Failure, China.

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