论文部分内容阅读
薄基岩浅埋煤层开采过程中顶板基岩易全厚切落,破断直接波及地表,存在顶板突水的安全隐患.在分析顶板导水通道特征基础上,针对浅埋煤层采用传统技术实现保水开采的难点,从开采方法本身采取措施,提出了一套较为系统的薄基岩浅埋煤层保水开采新技术.此项技术的关键有三:一是长壁工作面快速推进;二是支架合理支护阻力的计算确定;三是局部降低采高或局部充填.补连塔煤矿32201工作面的三维固-液耦合数值模拟计算和现场实践结果证明,该套技术的应用是成功而有效的,可在薄基岩浅埋煤层保水防溃开采中推广应用.图4,表1,参12.
In the process of shallow seam with thin bedrock, the bedrock of the roof is easy to fall into full thickness and break down directly to the surface, which has potential safety hazard of roof water inrush.Based on the analysis of roof aqueduct characteristics, , And took some measures from the mining method itself to put forward a set of new system of water-saving and mining technology for the shallow-seated shallow seam of thin bedrock.The key of this technique is as follows: firstly, the long-wall working face is advanced rapidly; secondly, The third is to locally reduce the mining height or partial filling.The 3D solid-liquid coupling numerical simulation of 32201 working face in BuLinta Coal Mine and the field practical results show that the application of the set of techniques is successful and effective, Bedrock shallow coal seam water and anti-collapse mining in the promotion and application.Figure 4, Table 1, reference 12.