horizontal layer

The primary analysis is taken on the causes of wall—rock landslide of the tunnels along horizontal layers.

对水平岩层隧道围岩坍方的原因进行了初步分析,并提出了相应的防治措施。

Study on critical depth of fracture water for nearly horizontal strata landslide;

近水平岩层滑坡启动的临界水柱高度分析

eliminary research on the relation between oil-gas exploration effectiveness and exploration level.;

油气勘探成效与勘探水平关系初步研究

Analysis and Comprehensive Prevention and Cure the Pouring Water of Two Level in Mining Face;

二水平回采工作面涌水原因分析与综合防治

Talking about the reform of conveying system in the second level drift of Xinxing Coal Mine;

浅谈新兴矿五采区二水平运煤系统的改造