Kikuo Matsui

Kyushu University

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Hideki Shimada

Toyohashi Municipal Hospital

170

Takashi Sasaoka

Kyushu University

Akihiro Hamanaka

Kyushu University

Shiro Kubota

National Institute of Advanced Industrial Science and Technology

Masatomo ICHINOSE

Institutul Naţional de Cercetare-Dezvoltare in Construcţii Urbanism şi Dezvoltare Teritorială Durabilă

Budi Sulistianto

Bandung Institute of Technology

Suseno Kramadibrata

Bandung Institute of Technology

Takashi Sasaoka

Kyushu University

Yasuhiro Yoshida

Hokkaido University

Shuichi Fujita

Kyushu University

Cooperative Institutions

Kyushu University

Bandung Institute of Technology

National Institute of Advanced Industrial Science and Technology

The University of Tokyo

Kyoto University

Osaka University

Tokyo Institute of Technology

China University of Mining and Technology

University of Tsukuba

Environmental and Water Resources Engineering

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Effects of temperature and confining pressure on mixed-mode (I–II) and mode II fracture toughness of Kimachi sandstone

International Journal of Rock Mechanics and Mining Sciences (2014)

Takahiro Funatsu Mahinda Kuruppu Kikuo Matsui

Overburden pressure

Mixed mode

Mode (computer interface)

10.1016/j.ijrmms.2013.12.009

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Citations (128)

The stability of footwall and dumpwall in open cut coal mines

Takeshi Ueda Kikuo Matsui Hideki Shimada

The purpose is to apply finite element modelling to the study of footwall stability in open cut coal mines. The stability of the footwall and the dumpwall in steep dip coal mining was analyzed using a two-dimensional numerical model. Particular reference is made to open cut mines in Indonesia. The Mohr-Coulomb criteria is used to measure failure. The model accounts for the effect of underground water pressure by changing the rock cohesion. Two case studies are presented. 2 refs., 9 figs., 3 tabs.

Cohesion (chemistry)

Open Pit Mining

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Application of Underground Continuous Impervious Curtain to Shaft Lining Rupture Treatment in Eastern Chinese Coal Mines

Memoirs of the Faculty of Engineering, Kyushu University (2012)

Qing Yu Shizuo Ikuta Hideki Shimada Takashi Sasaoka Kikuo Matsui

Abstract Many problems result when coal mine shafts are built in complicated geological conditions and serious shaft lining ruptures have often occurred in the eastern part of China since 1987. Several types of treatment methods are used for shaft lining reinforcement, such as the grouting method, sets of wall reinforcement method and stress-relief slot method; based on analysis of these methods and the mechanism of shaft lining rupture, a new treatment method is proposed for shaft lining treatment with an underground continuous impervious curtain (UCIC). In this study, the mechanism of shaft lining rupture was analyzed using numerical simulation, the current treatment methods were also analyzed, and then the various conditions of the UCIC built around the shaft lining were analyzed and the effect of the UCIC method was discussed. The results show that the lowering of water level in an aquifer can result in shaft lining rupture, and the new method has the effect to reduce and transform the stress concentration, and is able to reinforce shaft lining rupture in actual application.

Impervious surface

Shaft mining

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Slaking Behavior Concerning the Mechanism and Control of Acid Mine Drainage at Opencut Coal Mine in Indonesia

Journal of MMIJ (2007)

Jiro Oya Hideki Shimada Kikuo Matsui Masatomo ICHINOSE Takashi Sasaoka

Indonesia produces over 150million tons of clean coal annually. In Indonesia, most of the coal produced is extracted from opencut mines. Some coal measure rocks are soft in dynamic characteristic and show severely slaking behavior affected by water. Because of tropical rainforest climate, a great variety of problems, such as acid mine drainage, connecting with rock slaking and attendant structural damages have been faced. Accordingly, it is necessary to proceed an effective rehabilitation system which can minimize negative environmental impact of mining activity.This paper describes the slaking behavior of coal measure rocks and the incidence of acid water at Tanjung Enim opencut coal mine in Indonesia. The results shows following highlights: (1) incidence of acid water based on the result of water quality analysis, (2) relationship between the ratio of revegetated area and control acid mine drainage, and (3) slaking behavior of coal measured rocks categorized by NAG test.

Acid Mine Drainage

10.2473/journalofmmij.123.511

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The Present Situation and Issues in Coal Mining in India-Improvement of Thick Seam Mining Method-

Shigen-to-Sozai (2005)

Hirofumi Furukawa Kikuo Matsui Hideki Shimada

India is the third largest coal producer in the world and has substantial coal reserves. It produced about 340 million tons of coal in 2002-2003. Open cast production accounts for 80% of the total output and the remaining 20% is from underground. The share of the underground output in the total production is expected to remain at the current level through 2010 even as the coal production increases. Despite its huge resource of coal, the quality of Indian coal is not so good. A considerable amount of good quality coal deposits in India lies in the thickness range of 5-12 m. However, an appropriate mining method for such thick seams could not be developed so far.The coal's share of total electric power generation in India is 75.5% in 2001. Because it is a reliable, domestic, and low-cost source of fuel, coal has played and will continue to play a significant role in the development of the Indian economy. Production, processing, and consumption of coal, however, can have significant environmental impacts, if not properly managed.The paper describes the present situation of the Indian coal mining industry, discusses problems in thick seam mining methods, and proposes a new mining method for thick seams considering today's environmental issues in Indian coal mining.

Consumption

10.2473/shigentosozai.121.446

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Citations (3)

Some considerations in underground mining systems for extra thick coal seams

Kikuo Matsui Takashi Sasaoka Hideki Shimada Hirofumi Furukawa Hideaki TAKAMOTO

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Citations (2)

Characteristics of lubricant materials into over-cutting area using slurry pipe jacking

Takashi Kawai Daisuke Sato Hideki Shimada Kikuo Matsui Yasuhiro Yoshida

Jacking

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Vibration and fragmentation by changing the blast burden at Funao limestone quarry

Kōgyō Kayaku Kyōkaishi/Kayaku Gakkaishi/Science and technology of energetic materials/Kōgyō kayaku (2006)

Ganda Marihot Simangunsong Shin‐ichiro Maehara Hideki Shimada Kikuo Matsui Shiro Kubota

Fragmentation

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The Effects of Roadway Shape and Weak Floor on Roadway Closure

Journal of the Mining and Metallurgical Institute of Japan (1979)

Makoto Ihara Kikuo Matsui

The effects of roadway shape and weak floor on roadway closure were studied with scale model tests, using a sandplastermixture as model rock material.In addition, the FEM analysis, taking a fracture criterion into consideration, was conducted to compare with thesetest results.The results of model tests and the FEM analysis indicated the following conclusions:(1) The thicker the weak floor becomes, or the more the applied pressure increases, the greater the roadway closurebecomes.(2) When roadway has the weak floor, the formation of fracture zone in the floor promoted the roadway closure.(3)Circular roadway deformed with less amount than arched and square ones.(4) The results of FEM analysis coincided with the experimental results qualitatively.

Closure (psychology)

Scale model

10.2473/shigentosozai1953.95.1101_785

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Slake-durability behaviour of coal mine shales

Herryal Z. Anwar Hideki Shimada M. Ichinose Kikuo Matsui

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Citations (3)