沙漠产流区工作面过沟开采保水技术

发布时间：2018-09-09 18:05

【摘要】：沙漠产流区是榆神矿区重要的水源地,同时也可能成为安全生产的水害隐患。为保护沙漠珍稀水资源,保证煤炭安全高效开采,开展沙漠产流区保水采煤分区关键技术研究。采用现场实测、数值计算等手段剖析了过沟开采保水采煤的影响因素及分区标准,并基于分区特性提出了过沟保水关键技术。研究结果表明:过沟开采对水资源的影响可分为地表径流漏失和汇流区地下水漏失两类,其中汇流区进一步划分为突水溃沙区、突水区、渗漏区和保水区。残余隔水层厚度为0时原沟谷底部隔水层失去隔水性能,地表径流将泻入井下造成水资源漏失。过沟保水采煤技术包括采用修复地裂缝,突水区筑坝引流等,在综合治理开采区取得了工程应用成功。
[Abstract]:Desert runoff area is an important source of water in Yushen mining area, and it may also become a potential water hazard in safe production. In order to protect the rare water resources in the desert and ensure the safe and efficient exploitation of coal, the key technology of water-preserving coal mining in the desert runoff producing area is studied. By means of field measurement and numerical calculation, this paper analyzes the influencing factors and zoning standards of water-retaining coal mining through gully mining, and puts forward the key technology of water retention through ditch mining based on the zonal characteristics. The results show that the influence of gully mining on water resources can be divided into two types: surface runoff leakage and groundwater leakage in confluence area, in which the confluence area is further divided into water bursting area, leakage area and water retaining area. When the thickness of the residual layer is 0, the water barrier at the bottom of the original gully loses its performance, and the surface runoff will drain into the well, resulting in the leakage of water resources. The mining technology of water and coal preservation through gully includes repairing ground fissure, dam and drainage in water inrush area, and has been successfully applied in comprehensive treatment of mining area.
【作者单位】：国土资源部煤炭资源勘查与综合利用重点实验室;陕西省一八五煤田地质有限公司;陕西省矿产资源勘查与综合利用重点实验室;
【基金】：陕西省科学技术推广计划资助项目(2011TG-01) 国土资源部煤炭资源勘查与综合利用重点实验室开放课题基金资助项目(2014HB007)
【分类号】：TD823.8

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