地下採掘によつて生ずる地表沈下の形態について
1970 年 86 巻 989 号 p. 531-536
詳細
1970 年 86 巻 989 号 p. 531-536
After the World War II, the Mitsubishi Mining Company has introduced “Bergschadenkunde” from Germany to make clear the behavior of surface subsidence caused by underground mining.
This study has been done in some coal mines in Kyushu belonging to the company.
As a result of analyzing surveies, followings were made clear.
1) The critical angle (Genkaikaku) near the corner of mined area is about ten degree larger than that of the center of dipend of mined area.
2) Subsidence ratio (Chinkaritsu) changes in accordance with influence ratio.(Eikyokeisu)
3) The time which needs to be stabilized the subsidence differs in accordance withmining depth. And in the case of our long wall mining, it is about 24 months in maximum.
