论文部分内容阅读
随着开采深度的增加,新兴煤矿北部区总回风道出现高应力现象,巷道底鼓,顶板、两帮移近量明显增加。该矿通过改进支护工艺,使用了二次组合支护技术,采用底角锚杆、梯字钢、锚索、U型钢等联合支护技术,成功地控制了巷道底鼓和变形,保证了生产接续,确定了二次组合支护最佳时段,创造了较大的经济效益,并在深部软岩支护上提供了有利的科学依据。
With the increase of mining depth, the high pressure phenomenon appears in the total return air duct in the northern part of the emerging coal mines. The amount of approach of the bottom drum, roof and the two sides of the roadway obviously increases. The mine through the improvement of support technology, the use of the second combination of support technology, the use of the bottom of the anchor, ladder letter steel, anchor, U-shaped steel and other joint support technology to successfully control the tunnel bottom drum and deformation to ensure Production continued, determined the best combination of secondary support period, creating a greater economic benefits, and provides a scientific basis for the support of deep soft rock.