用overburden造句子，“overburden”造句

Reliability of dragline stripping and semi-continuous mining coal system under the thick overburden

The study of the overburden damage movement law of the shallow buried coal seam of thin base rock

In addition, the layer separation exists in the end of span of overburden if the subsidence happens in whole overburden, which is resulted from the shear failure of the bedding plane.

Since the wastewater contains large amount of degreasing cleaners, directly dispose will lead to the waste of detergent and the overburden of water treatment.

Of the pressures, the one caused by the weight of overlying sediments, we call it overburden pressure, is the most obvious.

It is used when mineral deposits are under a shallow, easily removed overburden, and when the vain of ore or seam of coal runs more or less horizontal to the surface.

What can be done if the overburden is hard rock?

Microbial oxidation of ores, tailings, and overburden contribute s to ARD.

This kind of strata is distributed widely in the Quaternary overburden layer of mountain riverbeds and mountain sloping field.

Discussed rock mass gravity collapse mechanism caused by under ground and overburden failure and surface settlement disaster, offered some underground mining and surface protective measures.

The cross section of Beijing Yingshan Mountain tunnel is superlarge scale supershallow overburden,by using of positive step are guiding adit excavation on method are both satisfactory in effect and cost.

To weigh down excessively;overburden or oppress.

In situ detection technology in the overburden failure to monitor the application

Application of radioisotope logging technique to the testing of the coefficient of permeability in the overburden layers of riverbed

after exploration has determined that the deposit can be mined from the surface, the overburden must be stripped off first. Different stripping methods are used according to the nature of the material to be removed.

New development in construction technology of concrete cut-off wall in deep overburden of sand gravels

On the basis of preceding main results, a mechanic model of overburden-karstic free face with a weak structural plane is presented in this paper.

Reasons for shift & damage of iron ore body's overburden rock

The results show that vertical stress is equal to overburden stress at shallow level. Maximum principal stress is sub horizontal stress in the NE direction.

Because of the overburden of our commitments, we are unable to ship your order within the agreed period.

For bedrock drilling ordinary hard alloy driller can be adopted for vertical core-drilling with the addition of clear water during rotation. for overburden dry drilling process can be adopted.

This paper demonstrates a successful freezing technology used in thick overburden of Dingji Mine, and sums up the experience of safe construction by freezing method in the thick overburden.