日本鉱業会誌

薄層の完全機械化採掘について

阿美長充

1965 年 81 巻 926 号 p. 526-534
発行日: 1965/06/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_526

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In Kushiro coal mine, Taiheiyo Coal Mine Co. Ltd., hydraulic iron props have beers applied successfiy since 1959, and hobels since 1960.
A considerable increase of output per manshift has resulted from these mechanization in thin seams. Then we began to use Tandem hobels and MKSP-LIU type selfadvanced roof supports in our thin seams to get more increased productivity, and obtained some good results. The auther report in this paper, the new mechanised organization of winning, several technical and economical data.
The auther also discussed the problems of thin seam mechanization, which we must dissolve in future to get a much more high productivity in our coal mine.

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微粉石炭または微粉木炭による銅の乾式精製法の確立とその工業化

伊藤寿夫

1965 年 81 巻 926 号 p. 535-540
発行日: 1965/06/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_535

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In the Hitachi Mine, research works had been conducted on the process of refining of anode copper obtainable from the converters by blowing in pulverized coal to replace the refining method adopted in the past of using green poles. This process was introduced in actual operation since 1962 and they have succeeded in its industrialization.
By this new refining process, it will be possible to achieve an integrated processes of oxidation, reduction and heating into one by blowing in the pulverized coal and air into molten copper varying their respective ratio. In this way, the mine has succeeded in reducing both the operating time and the production cost approximately one third and two thirds respectively.
Moreover, this process has also been introduced into the process of refining for producing wirbars using pulverized charcoal and they have thereby succeeded in not only obtaining superior quality wirebars but also achieving a wide scale rationalization in operation by its industrialization.

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神岡鉱山における坑道掘進の急速化について

東尚七

1965 年 81 巻 926 号 p. 541-553
発行日: 1965/06/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_541

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Since 1959, we began to develop our plan including several long tunnels (nearly 3, 000m each, sectional area 6-7m₂) and blind raises (200m respectively). Our rocks, Gneiss and Mokuji (green skarn), reject easy advance, the former hard to drill, the latter tough in blasting. Under these circumstances, we have been managing to speed up the development through the following technical items:
1. Self-made Conveyer Loaders designed from our original ideas.
2. Short-gauge drilling using expansible cartridged explosines.
3. Re-arrangement of crew system adding shift basses.
There improvements shortened mucking time to 30 minutes, yet arose drilling-speed 1.40 times faster and brought drifting cycle-time within only 2 hours.
From Oct. 1962 to Jan. 1963, we advanced 1, 096m including 324.3m in Nov. Other records over 300m are 301.4m in June, 356. 3m in Nov. both in 1964. Also a 200m raise attained within 2 months (formerly, 6 months needed)
The auther believes this rapid drifting can be applied universally and economically everywhere, because it seems just fit for any small sectional, single track drifting.

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硫化水素による鉱水処理

山田稔

1965 年 81 巻 926 号 p. 554-562
発行日: 1965/06/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_554

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Generally, the waste water from non-ferrous metal mine contains free sulfuric acid and copper, zinc, ferric and ferrous ions as sulfates.
Usually, the copper contained in the mine water is precipitated by iron scrap before neutralization.
However, when the contents of free acid and ferric sulfate are very high the mine water consumes large amounts of iron scrap and this method costs very expensive.
Our new method consists of following three steps:(1) Selective neutralization of ferric sulfate and sulfuric acid with calcium carbonate.(2) Recovery of copper by hydrogen sulfide.(3) Perfect neutralization of the water with slaked lime.
This new method can produce purified water free from pollution.

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岩石強度の標準試験法

西松裕一

1965 年 81 巻 926 号 p. 563-570
発行日: 1965/06/25
公開日: 2011/09/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_563

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岩石の強度試験法に関する基準

国際地圧会議事務局 (東ベルリン) の1963年の提案

石島洋二

1965 年 81 巻 926 号 p. 571-574
発行日: 1965/06/25
公開日: 2011/07/13

DOIhttps://doi.org/10.2473/shigentosozai1953.81.926_571

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