Abstract
This study seeks to address the problems of major geo-environmental hazards caused by high-intensive coal mining in China’s western eco-environment frangible area including strong mining pressure, surface subsidence, soil and water loss, and land desertification. Using the high-intensive mining at the Xiao-jihan Coal Mine, this paper investigates the compaction characteristics of aeolian sand-based backfilling materials, and then the evolution of water-conducting fractures and surface deformation laws with different backfill material’s compression ratios (BMCRs) by using physical simulation and numerical simulation analysis methods. This study presents the technical system of water-preserved and environmental protection with rapid-backfilling methods in China’s western eco-environment frangible area. The backfill coal mining technique and application prospects are assessed and discussed. The results will be helpful for coordinated development of coal resources exploitation and environmental protection in China’s western eco-environment frangible area.
Highlights
China’s West Development Program has encouraged rapid urbanization and industrialization in western China, resulting in intense coal resource exploitation [1]
4.1.Physical order to characteristics of geo-environmental hazards in high-intensive coal mining, InInorder to study studythe the characteristics of geo-environmental hazards in high-intensive coal we focus on the evolution of water-conducting fractures and surface deformation laws with different mining, we focus on the evolution of water-conducting fractures and surface deformation laws
The results indicate ground to these the surface during backfillbycoal mining with a backfill material’s compression ratios (BMCRs)
Summary
China’s West Development Program has encouraged rapid urbanization and industrialization in western China, resulting in intense coal resource exploitation [1]. Under buildings, bodies of water, railways, and for controlling strata movement [11,12,13,14,15] This technology has obvious economic and environmental benefits for exploiting coal resources technology has been successfully applied in more than twenty mining areas in China. China,inbackfill the (e.g., western coal mining conditions for the the smooth implementation of of thebackfill materials gangues and area solidprovides waste) the arebasic not very abundant; resulting high cost technology. This paper organized development as follows: firstand a review of the geological andofhydrogeological conditions of the western mining area with high-intensive coal resource is area, research on typical the technical systems and applications of effect evaluation is ofexploitation great significance.
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