从“采乌金”到“植绿金” 能源大省的绿色突围

Core Viewpoint - The article discusses the transformation of Shanxi Province from a coal-dominated economy to a greener model through innovative mining practices and technologies, emphasizing the shift from "black gold" to "green gold" [1][2]. Group 1: Green Mining Innovations - Shanxi coal mining companies are implementing green mining techniques, including backfilling with wash waste and pillarless mining, which are reshaping traditional mining practices [2][3]. - The use of hydraulic supports to backfill 780,000 tons of wash waste has minimized surface subsidence to within 3 millimeters [3]. - The "110 method" of pillarless mining has allowed the extraction of 300,000 tons of coal pillars safely, while real-time monitoring with 5G sensors has facilitated the recovery of an additional 340,000 tons of resources [3]. Group 2: Waste Utilization - Coal gangue, previously seen as an environmental burden, is being transformed into valuable industrial materials, with 2,400 tons processed daily into construction aggregates [4]. - The production of over one million bricks annually from coal gangue at the Guandi Mine has significantly reduced the volume of waste, with each brick consuming 10 kilograms of gangue [4]. - Investments of 1.12 billion yuan have been made to rehabilitate ten gangue hills, resulting in the establishment of six ecological parks [4]. Group 3: Water Treatment Innovations - The introduction of intelligent water treatment systems has optimized chemical dosing, saving over one million yuan annually in reagent costs [5]. - The upgraded wastewater treatment facilities can process 1,700 cubic meters of mine water per hour, with a new ceramic membrane system achieving a 98% removal rate of suspended solids [5]. - The implementation of a smart water management platform allows real-time monitoring of wastewater treatment metrics across 42 facilities, leading to a reduction of over 55 tons in COD emissions and a total annual treatment capacity of 22.5 million tons [7].