1.
The Study of Waste Land Exploitation in Yuanbaoshan Mine Subsidence;
元宝山矿二井塌陷区土地恢复利用研究
2.
The sides of the shaft were closing in!
矿井四周正在崩塌下来！
3.
Technology on Anti-High Temperature and Anti-Sloughing Drilling Fluid Used in Deep Well in Yumen Oilfield
玉门油田深井抗高温防塌钻井液技术
4.
Mechanical Mechanism and Design Theory of Shaft Lining Constructed in Subsidence Area;
塌陷区新型立井井壁结构与受力机理研究
5.
Hole sloughing prevention and antileakage drilling technology in deep buried hill inside well drilling in Jizhong depression of Huabei Oilfield
冀中坳陷深潜山内幕井防漏、防塌钻井技术
6.
Research and design of shaft lining structure in mining subsidence area
采空塌陷区立井井壁结构的研究与设计
7.
Study on Borehole Sloughing and Drilling Fluid Technology for Drilling in Qian'an Area.
乾安地区井壁坍塌机理及钻井液技术研究
8.
The roof of the mine caved in as a result of the explosion.
由于发生爆炸，矿井顶部坍塌了。
9.
If explosives are used, vibrations will cause the roof of the mine to collapse .
若是用炸药，震动会使矿井的顶部倒塌。
10.
The hole was lined with a steel tube to prevent the walls from falling in.
用一根钢管给钻孔加衬，以防井壁坍塌。
11.
Anti-Sloughing Drilling Dluids Technology for Jiangcang Coal Exploration in Qinghai Province;
青海省江仓矿区防塌钻井液技术研究
12.
The Study and Application of the Anti-sloughing Drilling Fluid SJY-1.
SJY-1防塌钻井液的研究及应用
13.
The miners were trapped underground for days after the entrance to the mine collapsed.
矿井的入口处坍塌了，矿工在地底下受困好几天。
14.
Frequent accidents in China' s mines point to its shortcomings in this regard.
中国矿井频繁发生的塌方事件就是一个例证。
15.
Many coal-miners were imprisoned in a pit accident.
在一次塌方事故中，许多矿工被压在了井下。
16.
The Study of Borehole Sloughing Period in Shale Formation of Shahejie of North Dagang Oilfield
北大港油田沙河街泥页岩井壁坍塌周期研究
17.
Calibration of logging data from mudstone washout intervals and its application in Chunxiao Field
春晓气田泥岩垮塌测井数据校正及应用
18.
RESEARCH ON BOREHOLE COLLAPSE CYCLE IN QINGXI BLOCK OF YUMEN OILFIELD
玉门油田青西区块易坍地层井眼坍塌周期研究