During the anchoring and shotcreting construction at the rockheading blast advancement face, problems such as support strength can not be guaranteed or engineering quality uneasy to control exist.
岩巷炮掘工作面的锚喷施工存在支护强度得不到保证、工程质量不易控制等问题。
2
The paper introduces a new style of loader which universally used for heading faces with heavy saddle back in roadway and weak stability of face surrounding rock.
介绍一种新型的装载机，该机能适用于巷道底板起伏变化大，工作面围岩稳定性较差的掘进工作面中使用。
3
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.