煤矸石离层注浆充填“五位一体”开采工艺研究  

Study on the “five-in-one” mining method of coal gangue grouting andfilling in separated bed

作　　者：马新青 MA Xinqing(China Coal Bedding Grouting Company,China Coal Tianjin Design Engineering Co.,Ltd.,Tianjin 300120,China)

机构地区：[1]中煤天津设计工程有限责任公司中煤离层注浆技术公司,天津300120

出　　处：《煤炭工程》2024年第10期139-144,共6页Coal Engineering

基　　金：中国中煤集团重大科技专项“煤矸石资源化综合利用技术研究与应用”。

摘　　要：为协同解决制约煤炭高效开采的矸石处置、灾害治理、生态保护等难题,提出了百万吨煤矸石覆岩隔离注浆充填处废、防冲、减震、保水、减沉的“五位一体”安全绿色开采工艺。研究了台阶式自流型制浆输浆工艺,解决了制浆输浆系统占地紧张、长距离输送等难题,达到了大规模处理矸石、系统节能稳定的目的。该工艺在葫芦素煤矿进行了现场试验,实现了一期处理矸石能力70万t/a,二期投产后处理矸石能力将达到150万t/a,累计节省矸石处理和水处理费用约1730万元,注浆充填区域地表下沉量降低52.9%~53.2%,工作面平均涌水量降幅17.7%~29.1%,冲击地压能量发生次数减少774次,降幅30.5%,取得了较好的经济、安全环保效果。In order to solve the difficulties affecting efficient coal mining including gangue disposal,disaster management and ecological protection,the five-in-one safe and green mining method featuring isolated grouting-filling for overburden rock and waste disposal,rockburst prevention,vibration damping,water preservation and subsidence reduction is proposed for one-million-tons scale coal gangue disposal.A step-type self-flowing slurry production and transportation method is put forward,which solves the problems in large-scale processing,system stability and energy saving,land occupation and long-distance transportation.The technology process was tested in the Hulusu Coal Mine.In the filed test,the production capacity achieved 700000 t/a in the first phase,and would reach 1.5 million t/a after the second phase project commissioning,which saved about 17.3 million yuan in the cost of gangue and water disposal,brought a 52.9%~53.2%decline in the surface subsidence amount of the slurry filling area,a decline of 17.7%~29.1%in the average water influx in the working face,a decline of 774(30.5%)in the number of rock burst energy event.The test project has achieved great results in terms of economy,safety and environmental protection.

关 键 词：采动覆岩 隔离注浆充填 矸石处理 绿色开采 

分 类 号：TD823.7[矿业工程—煤矿开采]