検索結果 60 件

吉田 豊, 西辻 昭, 木下 重教 資源と素材 105 (1), 55-60, 1989

Dust suspension is a common phenomenon in and around mine sites, factories, construction areas, etc.<BR>This research deals with the continuous measurement of the concentration of suspended …

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吉田 豊, 恒川 昌美, 西辻 昭, 木下 重教 粉体工学会誌 25 (9), 621-626, 1988

A procedure and apparatus have been developed to determine the concentration and size of particles suspended in a liquid.<br>A He-Ne Laser, nine kinds of powder samples and four kinds of liquid were …

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小出 仁, 高橋 学, 木下 重教, 石島 洋二, 中村 章 材料 35 (392), 478-483, 1986

New cracks are formed in a rock around Griffith cracks or Griffith inclusions with various aspect ratios and various mechanical characteristics. Parabolic Griffith-type criteria for fracture can be …

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木下 重教 工業教育 33 (4), 4_3-4, 1985-10-30

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木下 重教 工業教育 33 (3), 3_3-4, 1985-07-01

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石島 洋二, 福田 和寛, 佐藤 謙司, 木下 重教 日本鑛業會誌 101 (1165), 139-144, 1985

A low modulus instrument named hydraulic capsule for monitoring stress changes in rock is described with particular reference to itss ensitivity. Me thod to estimate the stressc hange in rock from …

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高橋 学, 木下 重教, 西澤 修, 小出 仁, 千葉 洋 地震　第２輯 37 (1), 67-79, 1984

Seismic wave velocities as well as the three principal strains were measured in the rectangular prisms of Westerly granite (35×35×70mm) under general triaxial compressional state where the three …

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木下, 重教, 石島, 洋二, 福田, 和寛 北海道大學工學部研究報告 116 15-25, 1983-10-31

記事分類: 地球科学--地質・地史

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高橋 学, 小出 仁, 木下 重教 応用地質 24 (4), 150-157, 1983

Five sandstones, one shale, one limestone, and one marble in Japan were deformed experimentally for a study of the intermediate principal stress effect with a servo-controlled Mogi-type true …

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出口 剛太, 福島 篤, 木下 重教 日本鑛業會誌 99 (1143), 353-358, 1983

The problem of stability of underground mining excavation has been the most important one at Yubari-shin colliery in Hokkaido since the mine was developed. However, no effective measures to solve …

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木下, 重教 北大百年史 通説 832-849, 1982-07-25

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吉田 豊, 西辻 昭, 木下 重教 日本鑛業會誌 98 (1133), 591-596, 1982

This papershows the discussions on the quantitative relation between the weight concentration (<I>W</I> mg/m<SUP>3</SUP>) of dust and the He-Ne LASER propagation loss (α dB) in liquid.<BR>We …

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石島 洋二, 伊藤 芳則, 木下 重教 日本鑛業會誌 97 (1126), 1235-1240, 1981

Some laboratory hydrofracturing experiments under condition of controlled pressurization rate were conducted using three kinds of materials for two different borehole treatments of the specimen-one …

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吉田 豊, 西辻 昭, 木下 重教 日本鑛業會誌 97 (1126), 1251-1256, 1981

The present report deals with the quantitative analysis on the airborne dust concentration of coal and rock duct by the method of He-Ne Laser propagation loss.<BR>the principal aim of study is to …

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石島 洋二, 木下 重教 日本鑛業會誌 96 (1113), 803-808, 1980

Fracture mechanics solutions for hydraulic fracturing under confining pressure σ∞ are studied. Elastic problem of two symmetric cracks emanating from a hole in a plate is solved by utilizing …

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石島 洋二, 木下 重教, 伊藤 芳則, 町田 和美 日本鑛業會誌 96 (1114), 871-877, 1980

Laboratory experiments were conducted to examine the validity of the observation equations 1 through 6 in the hydrofracturing stress measurements. Three kinds of rock materials having properties as …

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中島 巌, 木下 重教 日本鑛業會誌 95 (1092), 49-55, 1979

In rock cutting, the chip-segment formation attributes to the open crack propagation which is brought about by the development of the yielding region adjacent to the cutting point as shown in …

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木下, 重教, 石島, 洋二, 後藤, 龍彦, 中村, 章 北海道大學工學部研究報告 90 11-21, 1978-11-29

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木下, 重教, 石島, 洋二, 後藤, 龍彦, 中村, 章 北海道大學工學部研究報告 90 23-36, 1978-11-29

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中島 巌, 木下 重教 日本鑛業會誌 94 (1090), 839-844, 1978

As the results of microscopic observations on the failure planes produced in rock cutting, it was ascertained that there were two processes in i k failure. The first is the process of shear …

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石島 洋二, 木下 重教, 磯部 俊郎, 斉藤 光次 日本鑛業會誌 94 (1087), 587-592, 1978

Two unusual phenomena, one is concerning on the displacement distribution in rock, and the other is on the frequency of occurrence of rock noises, were observed during the mining activity in the …

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福島,篤, 木下,重教 土質工学会論文報告集 17 (4), vi-, 1977-12-15

前報に引き続き体積変化測定器を用いた剛性載荷試験を行なった。本報告では, post-failure領域に到達させた後に試料がぜい性破壊を生ずるまで除荷と載荷の繰返しを数回にわたって与えた。その応力-ヒズミ, 体積-ヒズミ曲線をみると, 除荷により軸ヒズミ, 体積ヒズミ共に永久ヒズミを生ずるが, 前者は弾性ヒズミと永久ヒズミが共存しているにもかかわらず, …

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佐藤,一彦, 木下,重教 土質工学会論文報告集 17 (4), vii-, 1977-12-15

ヒズミ速度(または荷重速度)の影響を考慮した構成方程式, 降伏・破壊条件を見いだすことは岩石の変形・破壊特性を明確に示すのみでなく, 破壊加工技術や岩石構造物の設計・管理, 構造地質学的な諸現象の解明に重要である。本論文では, 単軸圧縮破壊強度に対するヒズミ速度の影響について, 現在までに提案されている解釈をあとずけ, …

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石島,洋二, 後藤,龍彦, 木下,重教 土質工学会論文報告集 17 (4), vi-, 1977-12-15

岩盤応力の測定は岩盤力学分野における重要な現場計測の1つであるが, 費用その他の点で実用に耐え得るものが少ない。本論文では, 経済的で実用に耐え得る地圧測定器の開発について報告している。この地圧測定器は, ヒズミゲージが内部に埋め込まれた円柱形モールドゲージで介在物型測定器に属しており, モールド材料として岩石とほぼ同じオーダの剛性率を有するエポキシ系樹脂を常温硬化するタイプと高温硬化するタイプ…

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福島,篤, 木下,重教 土質工学会論文報告集 17 (4), vi-, 1977-12-15

従来の圧縮試験における体積変化測定は, 主にpre-failure領域の変形を取り扱ってきた。本研究は, post-failure領域での体積変化まで計測できる測定器を試作し剛性棒を用いた剛性圧縮試験を行ない, 応力-ヒズミ関係, 応力-体積ヒズミ関係を調べた。実験から得られた結果を, 岩石の種類(砂岩, 凝灰石, 大理石)によって応力-ヒズミ, 応力-体積ヒズミ関係の定性化を試み, …

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木下, 重教, 佐藤, 一彦, 川北, 稔 北海道大學工學部研究報告 83 51-61, 1977-03-25

記事分類: 金属工学・鉱山工学--鉱山工学 ; 地球科学--火山・岩石

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後藤 龍彦, 石島 洋二, 木下 重教, 小田 仁平次 日本鑛業會誌 93 (1068), 75-81, 1977

For these several years, a large diameter relief boring technique has been successful in Akabira Colliery. This method is to make, usually, a single hole of 200-250mm in diameter up to a depth of …

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佐藤 一彦, 木下 重教 日本鑛業會誌 92 (1060), 409-414, 1976

In this paper the compressive deformation of an elastic solid in which contains a penny-shaped crack is considered in order to explain the brittle fracture of rocks. The complete stress-strain curve …

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竹内 昌之, 木下 重教 日本鑛業會誌 92 (1063), 595-600, 1976

With increasing depth of working place, the abnormal phenomena due to rock pressure such as rock burst and gas outburst are becoming liable to occur in our coal mines. Then, today, it is most …

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佐藤 一彦, 木下 重教 日本鑛業會誌 92 (1061), 483-489, 1976

In this paper the equations of crack motion are derived under the both conditions of compressive loading with a finite stiffness and a constant strain rate on the basis of energy balance. It is …

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木下, 重教, 山下, 秀, 石島, 洋二, 中村, 章, 西原, 彰夫 北海道大學工學部研究報告 76 1-10, 1975-08-20

記事分類: 金属工学・鉱山工学--鉱山工学--石炭

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木下, 重教, 山下, 秀, 石島, 洋二, 中村, 章, 西原, 彰夫 北海道大學工學部研究報告 76 11-17, 1975-08-20

記事分類: 金属工学・鉱山工学--鉱山工学--石炭

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石島 洋二, 後藤 龍彦, 木下 重教 日本鑛業會誌 91 (1043), 5-12, 1975

Theory and the laboratory test results on the low cost stress meter which has a structure that the strain rosettes are pre-cast into the cylindrical shaped moulding material, therefor, which is …

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福島 篤, 木下 重教 材料 24 (263), 741-746, 1975

As a probability model of rock failure, the weakest link model has been usually used in pure tension. In compression, however, recent laboratory investigations show that most rock specimens can have …

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佐藤 一彦, 木下 重教 日本鑛業會誌 91 (1048), 385-390, 1975

In this paper, the strain rate effect on the compressive strength of rocks is studied on the basis of the theory of crack propagation in an isotropic elastic medium.<BR>First, strain rate involved …

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佐藤 一彦, 木下 重教 日本鑛業會誌 90 (1038), 527-532, 1974

The split Hopkinson bar method has been usually employed for the high speed compression test of materials. In order to investigate dynamic deformation and fracture of rock materials this testing …

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福島 篤, 木下 重教 日本鑛業會誌 90 (1041), 699-704, 1974

In this paper, volume changes of rocks under uniaxial compression were studies experimentally for three different types of rocks such as sandstone, tuff and mable. The stiff loading system by means …

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福島 篤, 木下 重教 日本鑛業會誌 90 (1042), 769-774, 1974

In succession to the previous study, stiff loading tests were made by using Dilatometer on some rocks such as sandstone and marble in the present study. Especially, the cyclic loading tests were …

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冨長 勇作, 木下 重教 日本鑛業會誌 90 (1038), 533-538, 1974

In this paper the stress distributions around two openings (an elliptical coal face and a circular drift) situated in parallel in a plane are solved by using the complex stress functions and …

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中島,巌, 木下,重教 土質工学会論文報告集 13 (4), v-, 1973-12-15

岩石の切削抵抗と切削厚さとの関係を表わす実験式は, 従来の研究により曲線式と直線式の二様に与えられているが, 切削厚さ1.0mm以下の場合については両式の関係は明らかにされていない。著者らは円筒フライス削りの場合のように, 切削厚さを0から1.0mm程度まで連続的に変えられるようにして岩石の回転切削を行ない, …

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中島 巖, 木下 重教 日本鑛業會誌 89 (1023), 291-295, 1973

In the present study were made microscopic observation on the chip formations inrock near and beyond the point of cutting.<BR>The bit was stopped cutting and taken off from the cutting plane …

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冨長 勇作, 木下 重教 日本鑛業會誌 89 (1025), 449-454, 1973

A new method concerning with in-situ stress measurement is proposed in this paper. This method is based on the principle that the stress distribution (or concentration) at the surface of a circular …

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冨長 勇作, 木下 重教 日本鑛業會誌 88 (1017), 775-780, 1972

The stress distribution around the multiple circular openings in the plane stress condition (σ<SUB>x∞</SUB>, σ<SUB>y∞</SUB>, τxy∞) is theoretically studied.<BR>It is assumed that the radii of all …

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中島 巌, 木下 重教 日本鑛業會誌 88 (1015), 521-526, 1972

The work described here was conducted to investigate the characteristics of the cutting force of rocks in the formation of small chips.<BR>The cutting experiments of rocks were carried out by the …

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冨長 勇作, 木下 重教 日本鑛業會誌 87 (1004), 739-743, 1971

The stress distribution around multiple holes (N number of holes) in an infinitely wide plate was studied theoreticaly by using the complex stress functions of complex variables <I>z<SUB>k</SUB></I> …

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山下 秀, 木下 重教 日本鑛業會誌 86 (992), 835-840, 1970

The paper presents the results of two-dimentional orthogonal cutting experiments on such a brittle specimen as plaster to estimate and analyze the cutting forces on rake surface and clearance …

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木下 重教, 朝倉 国臣 日本鑛業會誌 85 (976), 710-712, 1969

資料形態 : テキストデータ プレーンテキスト

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木下 重教, 中島 巌, 岡本 博之 日本鑛業會誌 85 (973), 325-332, 1969

The ignition possibility of methane-air mixture by pressing rock against a rotary steel wheel fitted with sixteen or four tungsten carbide blades at its periphery was studied, using the same …

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木下 重教, 繁富 一彬 日本鑛業會誌 85 (976), 719-720, 1969

資料形態 : テキストデータ プレーンテキスト

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木下 重教 日本鑛業會誌 85 (976), 555-557, 1969

資料形態 : テキストデータ プレーンテキスト

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阿部 与, 中島 巖, 木下 重教, 岡本 博之 日本鑛業會誌 84 (959), 246-247, 1968

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阿部 与, 木下 重教, 中島 巌 日本鑛業會誌 83 (953), 1077-1082, 1967

The work described here was conducted to investigate the possibility of the ignition of firedamp by rubbing friction between steel and rock. The apparatus used was almost as similar as that in the …

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阿部 与, 木下 重教, 中島 巌 日本鑛業會誌 83 (947), 489-490, 1967

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阿部 与, 木下 重教, 越智 啓登 日本鑛業會誌 81 (922), 148-149, 1965

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阿部 与, 木下 重教, 中村 勲 日本鑛業會誌 80 (915), 768-768, 1964

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阿部 与, 木下 重教, 山下 秀 日本鑛業會誌 80 (915), 802-804, 1964

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木下 重教 日本鑛業會誌 76 (866), 537-542, 1960

This paper describes work carried out by the author in Akabro coal mine, Hokkaido to acquire detailed knowledge regarding the rotary drilling and hence to know to whet extent the driliinp speed can …

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木下 重教 日本鑛業會誌 75 (852), 375-380, 1959

The object of the present work was to study on the characteristics of rotary drilling in rocks with particular reference to the effect of the thrust upon the penetration rate.<BR>The equipment used …

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木下 重教 日本鑛業會誌 74 (838), 218-225, 1958

The present investigation is a continuation of previous study on the drilling performans and drillability of rocks by rotary drills.<BR>In this research the following experimental formula have been …

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木下 重教 日本鑛業會誌 72 (817), 395-400, 1956

This paper describes the work carried out by the author, in the Mining Department of Hokkaido University, to investigate some of the basic matters as to the drillability of harder rocks.<BR>Fifteen …

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