著者

重光 俊彦

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.82, no.941, pp.751-754, 1966-09-25 (Released:2011-07-13)

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At Chikubetsu Coal Mine, we have begun excavation of prospecting mine road about 1, 700 meters long, using Russian PK-3 heading machine since February, 1966.There are some difficulties in working, e. g. maintenance of PK-3's loop-feeder and transporting debris cars, we could perform heading of mine road in coal seam 20 meters per day.

著者

山田 復之助

出版者

一般社団法人 資源・素材学会

雑誌

日本鑛業會誌 (ISSN:03694194)

巻号頁・発行日

vol.53, no.625, pp.318-324, 1937-05-22 (Released:2011-07-13)

著者

朝比奈 敬三

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.76, no.865, pp.444-452, 1960-07-25 (Released:2011-07-13)

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Chikubetu coal mine situated in Hokkaido, their area are about 3, 000 hectares, estimated available reserves about 43, 000, 000t, in which about 2, 900, 000t mined out.The largest difficulty we met on the rationalization process was how to deal with the mudstone, which we found under side of coal seam. This mudstone containes a lot of bentonite and very brittle.At the same time, it absorbs water very easily and increases itself.Therefore, it was very difficult to maintain the gallery, which was excarvated in this rock seam. As the first adequate measure for that, we excarvated the transportation gallery in the other harder floor rock, and we adopted the so called“Pocket mining system”.As above mentioned, our suitable measure for the brittle and absorbable mudstone rock seam led us to The mechanization in face and rationalization of the transportation system, and we could get the large output of coal in face.Well, we will describe this rationalization process in more detail as follows ; after we succeeded the“Kappe mining system”, we excarvated the great transportation cross cut as the first step to rationalization of Transportation system.(“Kappe mining system”is a mining system, in which we use the Kappe-iron beam, iron prop and armed conveyer)Then, as the second step, we tried to concentrate the coal face, rationalize the incline belt shaft and armed conveyer gate road. After that, we adopted the so called“slicing mining system”as we see it today.The great effects of rationalization were increase of output per man shift, and decrease of mining cost.The output per man shift became 7 times larger than before, total coal output 10 times, mining cost became 13 times.Without adaptation of any new machine and special mining method, we got these good effects by only effective using of our machines and installations.Now we think, our rationalization process till now was the only first step. And we must try to develop the new mining technic as the second step of our rationalization.We believe that, on the base of our above mentioned rationalization, we can develop the new mining Technic in our coal mine, for instance, adaptation of hydraulic prop, hyaraulic transportation of coal, new Technic of shaft sinking etc.Well, we got also good results of safety in coal mine, and this owed to the improvement of our technic and rationalization, we think.We mentioned above only the rationalization of technic, but we must stress here finally the adequateness of our labour management was the important element to the good reconstraction of our coal mine, which was ever facining a terrible crisis.

著者

藤原 滋郎 佐藤 久三夫

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.83, no.956, pp.1853-1857, 1967-12-25 (Released:2011-07-13)

著者

貞清 新一

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.83, no.956, pp.1665-1666, 1967-12-25 (Released:2011-07-13)

著者

山谷 金治

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.100, no.1160, pp.978-980, 1984-10-25 (Released:2011-07-13)

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Tsukinuno mine is located in the central part of Yamagata prefecture.Annual production of the mine is 100, 000tons of bentonite are which consists of Na-montmorillonite accompanying with a little amount of quartz, feldsper and calcite and mining methods are shrinkage stoping and sublevel stoping.This paper describes on the following points(1) Geology and mineral deposits(2) Opening(3) Mining methods(4) Others 1) transportation, 2) ventilation, 3) drainage, 4) lighting, 5) mine safety

著者

杉山 爲吉

出版者

一般社団法人 資源・素材学会

雑誌

日本鑛業會誌 (ISSN:03694194)

巻号頁・発行日

vol.61, no.717-718, pp.26-40, 1945-02-20 (Released:2011-07-13)

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浮鑛油の不足對策として, 筆著は杉根株より得られる杉根油に着目し, 之が研究を試みた。杉根油は杉根株を水蒸氣蒸溜により作りしものにして, 之と同油を硫酸處理せし碗酸塵理油との二者につき, その有する起泡力, 浮鑛力を既に優秀なる浮鑛油として使用され來り, ヤーマーFパイン油並に最近浮鑛油として登場せる, シトロネラ油更にシダーウッド油 (西洋杉油) に對し比較檢討したところ, 前二者共にヤーマーFパイン油に對しては, 起泡力は劣るも浮鑛力に於ては, 杉根硫酸處理油は之を凌ぎ杉根原油は多少劣りたるのみにて, 何れも優秀なる成績を示し, シトロネラ油, シダーウッド油に對しては起泡力も浮鑛力も遙に凌駕した。顧ふに杉は本邦到る處に豊富に産するものにして, その需要を充分に満し得るものといへよう。されば杉根油が如何なる成分より成り, その有する起泡力, 浮鑛力が何の成分に基因するものなるや, 等については更に詳細なる研究に〓つとしても, 浮鑛油不足の現勢下、杉根油の優秀なる浮鑛力の確認は, その及ぼすところ大なるものありと考へ, 拙速なる原稿ではあるが, 玄に不取敢發表した次第である。

著者

鶴岡 競

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.83, no.955, pp.1227-1229, 1967-11-25 (Released:2011-07-13)

著者

金 営三 鈴木 光郎 松岡 功

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.102, no.1176, pp.85-89, 1986-02-25 (Released:2011-07-13)

参考文献数

20

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As a basic research for the application of high gradient magnetic separation, the magnetic susceptibilities were measured in room temperature for some sulfide minerals;pyrite, chalcopyrite, bornite, chalcocite, covellite, sphalerite and galena. The susceptibilities of crystalline pyrites, except 0.46 × 10-6emu/g of colloform pyrite, gave low values of narrow range from 0.16 to 0.28 × 10-6 emu/g, which are independent of the magnetic force.Besides, pyrites from the metamorphic and metasomatic deposits caused to vary the magnetization intensity depending on magnetic force owing to the coexisting minor ferromagnetic minerals as magnetite, hematite and pyrrhotite.Against chalcopyrite, the susceptibility ranged the values from 2.8 to 7.0 × 10-6emu/g, but bornite showed a low value of 0.7 × 10-6emu/g.Sphalerites showed more positive susceptibilities with the increase of iron content, and the curve followed by the values is nonlinear which is similar to the curve, given by Keys et al.(1968).Chalcocite, covellite and galena are diamagnetic substantially.Nevertheless, the first one gave positive valueof 0.04 × 10-6emu/g and the second one 0.5 and 0.9 × 10-6emu/g.In galena only, the negative value was found as- 0.04 ×10-6 emu/g, but it is very small, as compared to pure synthetic PbS.It is thought that the deviations of susceptibilities of the above three minerals might have been caused by the presence of any magnetic impurity within them as iron in sphalerite.

著者

鈴木 光 西松 裕一 ヘルセオヨ R.

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.86, no.986, pp.353-358, 1970-05-25 (Released:2011-07-13)

参考文献数

10

被引用文献数

1 2

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In this paper, the fatigue failure of some rocks under the repeated compressive load is discussed from the point of view that the fatigue failure is a stochastic process. Using a graphical method in which the logarithms of the probability of survival are plotted against the fatigue lives, it is revealed that the probability of survival is represented with the sum of two expotential functions, i. e.p=ξ1·exp (-λ1·N) +ξ2·exp (-λ2·N) where p: the probability of survivalξi: the probability that the failure of test piece occurs by the fracture mechamism with the rate constamtλi N: the number of loading cyclesThis result means that the fatigue failure of rocks consists of two exclusive Poisson's processes of 1st order, each of which would correspond to the inter- and innergranular fracture of the mineral particles constituting the rock.In order to obtain the S-N curve, the effect of the stress amplitude on the rate constant of the fatigue failure is investigated. A series of experiments is carried out at a constant minimum load and several levels of maximum loads.Finnally, it is indicated that the loading frequency has a little effect on the fatigue life of the rock.

著者

伊藤 正

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.84, no.963, pp.925-928, 1968-07-25 (Released:2011-07-13)

著者

門 智

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.100, no.1152, pp.142-152, 1984-02-25 (Released:2011-07-13)

参考文献数

12

被引用文献数

2 1

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Until the discoveries of huge pyrochlore deposits in Brazil and Canada in 1950's, both Nb and Ta had been extracted from Tantalite or Columbite using by solvent (MIBK) extraction technique.Using by the above pyrochlore resources, more than 95% of niobium products, such as Fe-Nb, various grade of oxides (technical, optical etc.) and Nb-metal are produced at present.The application of niobium to steels, optical glass, electronic component, superalloys, refractory metals, superconducting materials and catalysts are discussed in this paper. On the other hand, tantalum has no bright future even though Ta-condencer, cemented carbide and super-anti corrosive materials are stable and reliable markets, so that the total comsumption of Ta in the world to be remaining about 1, 600t in Ta205 during a few years. The consumption of niobium will increase in the field of electronics, superalloys, catalyst, however in true we cannot expect it too much in steel industry.

著者

杉山 務 岡田 信三

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.97, no.1124, pp.1152-1154, 1981-10-25 (Released:2011-07-13)

著者

飯島 幸夫

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.98, no.1136, pp.993-995, 1982-10-25 (Released:2011-07-13)

著者

田代 襄 河野 信 高桑 功

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.87, no.996, pp.161-166, 1971-03-25 (Released:2011-07-13)

参考文献数

18

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The authors describe a series of laboratory experiments designed to investigate the influence of moisture on the spontaneous heating of coal on a quantitative basis. The experiments have shown next two conclusions.The spontaneous ignition point is found to be lowest when the moisture content is zero, and it progressively increases with the increase of the moisture content of coal.The relation between the moisture and the rate of temperature rise is expressed by the phrase that the more, the lower. The highest rate of temperature rise is shown by dry coal.

著者

中村 俊男

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.84, no.963, pp.708-712, 1968-07-25 (Released:2011-07-13)

著者

中野 実

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.76, no.869, pp.829-835, 1960-11-25 (Released:2011-07-13)

著者

クルチリン B. N.

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.83, no.951, pp.958-960, 1967-07-25 (Released:2011-07-13)

著者

西川 豊 大西 重吉郎 野村 幸三郎

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.69, no.784, pp.395-403, 1953-10-25 (Released:2011-07-13)

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This paper explains the general plan for coal mining by such shafts as main winding shaft (No.1 shaft), main up-cast shaft (No.2 shaft) and:blind shaft for conveying packing materials at Mitsui Sunagawa Coal Mine. The further explanations given here are those about the outline of structure of the main winding shaft, process of its sinking work, and the winding equipment.

著者

西松 裕一

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.87, no.1005, pp.920-923, 1971-11-25 (Released:2011-07-13)

参考文献数

14