Titlebook: Water-resisting Property and Key Technologies of Grouting Reconstruction of the Upper Ordovician Lim; Hao Wang Book 2020 Springer Nature S

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Water-Bearing and Water-resisting Properties of Top of Ordovician Limestone in North China Coalfielerties of the TOL in NCCs. The comprehensive evaluation method of the water abundance of TOL in coal mining areas was presented. Three vertical zones in the TOL were put forward, which set the foundation for field implement of utilization and grouting reconstruction of the TOL.

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COST

Criterion for Utilization and Grouting Reconstruction of Top of Ordovician Limestone,ed and filled zone exists in the TOL with good water-resisting performance in some mining areas and can be used as an aquifuge. However, the aquifuge between the coal seam and the Ordovician karst fracture water-bearing interval may not stand the action of the water pressure in the seam floor if the

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savage

Case Study of Utilization and Grouting Reconstruction of Top of Ordovician Limestone,ealized without dewatering, and approximately 450,000 tons of “idle coal reserves” that were once seriously threatened by the Ordovician limestone aquifer were emancipated. The successful case study verified the importance of understanding the water-bearing and water-resisting properties of the TOL

filial

Conclusions and Innovation Points,mining areas in NCCs, the study on the paleo-sedimentary environments of the Ordovician strata and karst development characteristics of the TOL in typical mining areas. The technical thought of “plane partition and vertical zonation” was applied to evaluatethe lateral water yield property and the ve

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