朝鲜安州煤矿页岩膨胀特性试验研究

Experiment Study on Swelling Behaviours of the Shale at An Zhou Coal Mine, D.P.R.Korea

本文介绍了朝鲜民主主义人民共和国安州煤矿页岩的矿物成分和膨胀性质试验结果。测试结果表明,该页岩具有密度大、孔隙比小和亲水性粘土矿物含量高的特点。这种矿物组成和物理性质决定了它将表现出膨胀变形和膨胀力大的工程特性。因此,认为减少扰动和保持原始含水量可能是防止围岩破坏性膨胀的有效途径。本文是我所和朝鲜同行之间的第一次实质性合作研究成果。

In this paper, the test results of mineral component and swelling behaviour of the shale at An Zhon Coal Mine, D.P.R.Korea are introduced.The results showed that the shale has properties of high unit weight, low porsity and high content of hydrophilic clay mineral. With such properties, it will have large swell and high swelling force to the support of the project.Therefore it is considered that the effective measure to provent unstable of the surrounding rock may be reducing disturbance and changes of water content.This paper is the first achievement in cooperation research between the colleagues of our institute and Institute of Rock Mechanics Academia Korea.