神东矿区井下采空区水库水资源循环利用关键技术研究

发布时间：2018-01-22 12:47

本文关键词： 神东矿区浅埋煤层地下水库循环利用导水裂隙　出处：《西安科技大学》2016年博士论文　论文类型：学位论文

【摘要】：神东矿区地处干旱半干旱的毛乌素沙漠边缘,生态环境脆弱,水资源匮乏。煤炭高强度开发导致地层水资源漏失严重,是神东矿区绿色开采亟待解决的重大技术难题。利用井下采空区作为矿井水储存、净化和利用的空间,进行基于地下水库的矿井水循环利用关键技术研究,具有重要的理论意义和实践价值。本文针对神东矿区大柳塔煤矿地质开采条件,结合神东矿区高产高效煤炭开采技术,综合采用现场实测、理论分析与模拟实验等手段,研究和开发了通过井下采空区水库实现水资源循环利用的地下水库选址、坝体结构与防渗、监测与调控等关键技术。地下水库的选址应建设在围岩较稳定、地势偏低、不受采动直接影响的区域,以便于水资源的稳定储存和高效调用。通过对地下水库隔离坝体结构分析,得到了水库隔离坝体参数的计算方法。针对坝体防渗技术,提出了煤柱坝体采动裂隙采用注浆加固与封堵裂隙的防渗技术,提出了人工构筑坝体采用结构和强度设计的防渗技术。按照地下水库污水回灌和清水取用的功能要求,提出了“污水由高处回灌、清水由低处取用”的管路布置原则,并形成了不同水平之间水库管路布设的关键技术。构建了以传感器、测量控制单元(MCU)和监测控制平台为主的地下水库安全监测系统。应用本研究技术,在大柳塔矿建成了我国首个具有立体空间网络的庞大的地下水库水循环利用系统,可向矿区生产和生活供水,形成了天然污水处理厂和自然压差供水系统,实现了大柳塔煤矿“矿区地上清洁水源零入井、地下开采导致的污水零升井”的双零处理目标,实现了水资源的高效循环利用,有效保护了水资源。大柳塔煤矿地下水库技术推广应用到神华集团神东煤炭分公司的15个矿,设计实施了 35座地下水库,总设计地下水库储水量达2499.5万mm3,提供了 95%的矿区生产和生活用水,实现了矿区水资源良性立体循环,由昔日的用水大户变为今日的对外供水大户,取得了显著的社会经济效益,为我国浅埋煤层绿色开采开辟了新途径。
[Abstract]:Shendong mining area is located on the edge of arid and semi-arid Maowusu desert. The ecological environment is fragile and water resources are scarce. It is an important technical problem to be solved urgently in green mining in Shendong mining area. Using goaf as the space of mine water storage, purification and utilization, the key technology of mine water recycling based on underground reservoir is studied. It has important theoretical significance and practical value. According to the geological mining conditions of Daliuta coal mine in Shendong mining area, combined with the high yield and high efficiency coal mining technology of Shendong mining area, the field measurement is adopted comprehensively in this paper. By means of theoretical analysis and simulation experiments, the underground reservoir location, dam structure and seepage control are studied and developed to realize the recycling utilization of water resources through the underground goaf reservoir. Monitoring and control and other key technologies. The location of underground reservoir should be built in the area where the surrounding rock is relatively stable, the topography is low, and the underground reservoir is not directly affected by mining. In order to facilitate the stable storage and efficient transfer of water resources, the calculation method of reservoir isolation dam parameters is obtained by analyzing the structure of isolated dam body of underground reservoir. This paper puts forward the anti-seepage technology of mining fissure in coal pillar dam body by grouting reinforcement and sealing the fissure. The anti-seepage technology of artificial construction dam body is put forward, which adopts structure and strength design. According to the function requirement of sewage recharge and clear water utilization in underground reservoir, it is put forward that "sewage recharge from high place." The principle of pipe layout of clear water is taken from the low place, and the key technology of setting up the reservoir pipeline between different levels is formed. The sensor is constructed. Survey and control unit (MCU) and monitoring and control platform for underground reservoir safety monitoring system. The first large underground reservoir water recycling system with three-dimensional space network has been built in Daliuta Mine which can supply water to production and life of mining area and form natural sewage treatment plant and natural pressure differential water supply system. The double zero treatment goal of "zero entry of clean water source in mining area and zero rising well of sewage caused by underground mining" has been realized in Daliuta coal mine, and the efficient recycling of water resources has been realized. The technology of underground reservoir in Daliuta Coal Mine was popularized and applied to 15 mines of Shenhua Group Shendong Coal Company, and 35 underground reservoirs were designed and implemented. The total design of underground reservoir water storage reaches twenty-four million nine hundred and ninety-five thousand mm, providing 95% of the production and domestic water in mining area, realizing the benign three-dimensional circulation of water resources in mining area. From the former water users to the foreign water suppliers, remarkable social and economic benefits have been obtained, which has opened a new way for the green mining of shallow coal seams in China.
【学位授予单位】：西安科技大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TV213.9

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