During the anchoring and shotcreting construction at the rock heading 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。

youdao

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。

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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.

应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。

youdao

Marks, Managing Partner at High Rock Partners, he told me we are heading into a period, where there will be a big push for transactions to close before the end of the year especially since deal activity was muted during the first two quarters of 2010.

FORBES: M&A Activity Up; Private Equity Still Cautious

Ocean waves broke on the volcanic rock below, and we sat for a long while before heading back.

WSJ: Driving the Hana Highway in Maui, Hawaii