5月7日,在第三批国家级绿色矿山试点单位、国土资源部和财政部确立的煤炭资源综合利用示范基地——安徽淮北矿业集团杨庄煤矿364综采工作面,源源不断的矸石、粉煤灰等充填材料被输送到井下用于回填。杨庄煤矿是一座开采了47年的老矿,目前仅城市下压煤就达1 000多万吨,严重影响生产接续。为实现绿色开采,杨庄煤矿积极与中国矿业大学合作,推广应用城下密实矸石充填综合机械化开采技术,今年以来已成功采出城市下压煤2万多吨。据了解,这项技术是通过向井下采空区送入矸石、粉煤灰等充填材料,并在充填体保护下进行采 May 7, in the third batch of national green mine pilot units, the Ministry of Land Resources and the Ministry of Finance established coal resources utilization demonstration base - Anhui Huaibei Mining Group Yangzhuang Coal Mine 364 fully mechanized mining face, a steady stream of waste rock, Filling materials such as fly ash are transported downhole for backfilling. Yangzhuang Coal Mine is an old mine that has been mined for 47 years. At present, only over 10 million tons of coal are pressed under the city alone, seriously affecting the production continuity. In order to achieve green mining, Yangzhuang Coal Mine has been actively cooperating with China University of Mining and Technology to popularize and apply the mechanized mining technology of dense waste rock filling in the city. This year, Yangzhuang Coal Mine has successfully taken over 20,000 tons of coal under the city. It is understood that this technology is through the underground goaf into the gangue, fly ash and other filling materials, and the protection of the filling body mining