• KOREAN POULTRY JOURNAL
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• v.54 no.10
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• pp.158-160
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• 2022

• Journal of Korean Medical classics
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• v.19 no.1 s.32
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• pp.211-214
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• 2006

북송(北宋)의 교정의서국(校正書局)에서는 치평(治平) 3년에 왕수(王洙)가 발견한 ${\ulcorner}$금궤옥함요약방(金玉函要略方)${\lrcorner}$을 다시 정리하여 장중경(張仲景)의 ${\ulcorner}$금궤방론(金方論)${\lrcorner}$이라는 이름으로 발간하면서, 그 서문 뒤에 ‘중경금궤록(仲景金)’이라고 언급하였는데, 필자는 역사적인 각도에서 금궤라는 명칭의 연원과 금궤 금궤록이 ${\ulcorner}$금궤방론(金方論)${\lrcorner}$서문 뒤에 언급된 ‘중경금궤록’와 어떤 관계가 있는가에 대하여 고찰하여 보았다. 금궤라는 명칭은 귀중한 서적이나 물품을 보관하던 장소를 지칭하는 말로 사용되었는데, 서명으로는 ${\ulcorner}$한서(漢書) 예문지(藝文志)${\lrcorner}$에 ${\ulcorner}$감여금궤(堪輿金)${\lrcorner}$라는 명칭으로 최초로 등장하며, 의서로는 ${\ulcorner}$진서(晋書)${\lrcorner}$갈홍전(葛洪傳)에 ${\ulcorner}$금궤약방(金藥方)${\lrcorner}$이라는 서명으로 최초로 나온다. 현존하는 ${\ulcorner}$도장(道藏)${\lrcorner}$ 제(第)6부(部) 동현부(洞玄部) 옥결류(玉訣類)에 있는 ‘신선복이단석행약법(神仙服餌丹石行藥法)’의 일부분의 내용이 갈홍(葛洪)의 ${\ulcorner}$포박자(抱朴子)${\lrcorner}$와 서로 같고, 이것이 ${\ulcorner}$금궤록${\lrcorner}$일 가능성이 매우 높다. 손기(孫奇) 등 송(宋)의 신하가 ${\ulcorner}$금궤방론(金方論)${\lrcorner}$ 서문 뒤에 인용한 내용은 ${\ulcorner}$주후비급방${\lrcorner}$ 서문과 ${\ulcorner}$포박자내편(抱朴子內篇) 잡응(雜應)${\lrcorner}$의 내용과 서로 일치한다. 송(宋)의 신하가 인용한 서문은 갈홍(葛洪)이 쓴 것을 다시 인용하였을 가능성이 높고, 그 중에 ${\ulcorner}$금궤록${\lrcorner}$과 관련이 있는 내용은 장중경(張仲景)과는 아무 상관도 없다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.14 no.6
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• pp.124-131
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• 2010

Rock Bolt generally utilizes deformed reinforcing bar welded from structural steel of which strength is higher than required for making advantageous use of the support function of ground. In the condition with highly corrosive underground water, however, problem frequently occurs on tunnel and slope stabilization in terms of repair, rehabilitation and maintenance issues due to the destruction of Rock Bolt by corrosion of steel. A structural performance evaluation for GFRP Rock Bolt was conducted for the purpose of resolving the foregoing problem and at the same time developing a permanently-usable support material. This study intended to evaluate the safety factor of GFRP Rock Bolt by implementing the slope stability interpretation via structural analysis on the basis of its structural characteristics derived from both tensile force function test and shear force function test. It is judged based on the results that GFRP Rock Bolt would secure sufficient ground stability as an alternative material for existing Steel Rock Bolt.

• Journal of the Korean GEO-environmental Society
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• v.24 no.4
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• pp.13-22
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• 2023

In this paper, through experimental research, the period when rock bolts exert support effects is presented as grout strength and through numerical analysis, the rock bolt pull-out behavior according to ground conditions and strength reduction factors is analyzed. As a result, it is determined that rock bolts exhibit their reinforcing effect at a grout strength of 5 MPa (cured for 18 hours). The influence of the boundary interface strength reduction factor was found to be significant for rock bolt displacement in weak ground conditions, for shear stress between grout and ground in highly elastic ground conditions, and for grout stress in all ground conditions. These findings are expected to contribute to the establishment of specific standards for rock bolt testing and numerical analysis, and to facilitate improved design and implementation of rock bolt reinforcement.

• Journal of the Korea institute for structural maintenance and inspection
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• v.9 no.4
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• pp.135-140
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• 2005

In case of rock bolt useable by tunnel reinforcement methods at field is applied problem of typical rock bolt pull test diagram method propositional in documents and is not thesis of clearness analysis basis about result of rock bolt pull test. So this paper suggested in consideration of foreign basis and field condition that the first, "suggestion of apposite diagram method at tight ground and difference application of rock bolt pull test method at loose and tight ground" and the second, "thesis of estimation basis non-thesis of design and specification, test etc".

• Tunnel and Underground Space
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• v.19 no.3
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• pp.181-189
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• 2009

This study is to evaluate an effect of supports with respect to these supports after comparing the characteristic of support between rock bolt of a widely used type and spiral bolt of a new type. For these purposes, we performed pull-out test in laboratory about rock and spiral bolts in the case of cement-mortar grout curing periods, 7 and 28 days, then calculated pull-out load, displacement, external pressure, inner pressure and shear stress using data obtained from the results of pull-out test, respectively. In relation between pull-out load and displacement, displacement of spiral bolt is larger than one of rock bolt. It is considered that mechanical property of rock bolt is due to larger than one of spiral bolt. In addition, displacement of supports shows nearly same or decreasing with curing periods. We found that because adhesive force between supports and cement-mortar grout is increasing with compressive strength of grout according to curing periods. The inner pressure of spiral bolt is represented larger than one of rock bolt at a step of same pull-out load. It is suggested that spiral bolt is more stable than rock bolt, maintaining stability of ground or rock mass, when supports are installed in a ground or rock mass under the same condition. Putting together with above results, we can consider that spiral bolt as a new support on an aspect of pull-out load and inner pressure is larger than rock bolt in a ground or rock mass under the same condition. Moreover, spiral bolt is more effective support than rock bolt, considering an economical and constructive aspects of supports, as well as ground or rock stability before or after installing supports.

• Journal of the Korean Geotechnical Society
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• v.33 no.3
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• pp.29-36
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• 2017

It has been known that rockbolt is one of important supports improving the support capacity with shotcrete in NATM tunnel. Also, it is necessary for the inclined system bolting to enhance the efficiency of installation in case of a narrow space such as cross passage and enlargement tunnel. However, there is no profound technical study for the effect of inclined rockbolt of systematic installation on the support mechanism and ground behaviour in NATM tunnel. In this study, the effects of the length and installation angle of rockbolt on the characteristics of support and ground reinforcement were analyzed by using 3D finite element numerical study. Through the numerical results for the parametric modelling of inclined rockbolt, the characteristics of mechanical behaviors between the axial force of rockbolt and the effect of ground reinforcement in regard to the various factors of the length and installation angle of rockbolt were verified and reviewed thoroughly. Also, it was shown that the installation angle of rockbolt for enhancing the arching effect in NATM tunnel was $45^{\circ}$, and the difference of the reinforcing effect for support between the installation angles of $75^{\circ}$ and $90^{\circ}$ was insignificant. The additional numerical studies for various condition would be carried out for practical design guideline of inclined rockbolt.

• The Korean Journal of Archival Studies
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• no.55
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• pp.307-334
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• 2018

This study analyzes the status of the designated administrative meetings of the central administrative agencies, including the number of meetings, the presence of written minutes, and the form of minutes. The implications based on the analysis are as follows. First, there were meetings that were not held, and written meetings were held. The standards for determining the designated meetings should be established. Second, when only a written meeting was held, the minutes were not made because these were not written separately. A written meeting can be held, if it is necessary. However, there is still a need to keep a detailed record similar to minutes in such cases. Third, among the minute types, a written record of the points of the meeting is preferred. Even if the meeting is closed for proper reasons, making a transcript and a record in addition to writing the points must be settled. Finally, specific standards for the procedures and reasons why meetings and minutes should be closed should be established. It is necessary to change the paradigm from the viewpoint of production and management to the viewpoint of disclosure and sharing through the improvement of standards and procedures related to designated meetings and designated meeting minutes.

• (The)Study of the Eastern Classic
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• no.57
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• pp.103-136
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• 2014

This is the paper on the descriptive perspective and writing method in Yeheon(旅軒)'s Piranrok(避亂錄). Piranrok was Yeheon's diary which was written during Japanese invasions of Korea. Many intellectual recorded their diaries during the war. Yeheon's Piranrok was a typical example among war journals. I tried to take view of the descriptive perspective and writing method in Yeheon's Piranrok. First, sourceful introspection was distinct characteristic in the descriptive perspective. Yeheon penetrated into a chaotic state of affairs during Japanese invasions of Korea. And Yeheon had reflective consciousness about self-existence. He contemplated his existence through diary writing. I had a task to study the writing methods in Yeheon's diary. One of the distinct characteristic in writing methods was to increase specific gravity of discussion. Yeheon advocated strongly his opinion and position about cause of war, war responsibility, morality, fortification and righteous army. Yeheon made the best use of communication method and catechetic method. He answered his own questions about the enter and retirement of public office. He expressed his worry and conflict through various techniques of expression. I have a task to study the diary in Chosun dynasty. I believe that analyzing characteristics of Yeheon's diary can contribute to understanding the literature history of diaries in Chosun dynasty.

• Tunnel and Underground Space
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• v.24 no.5
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• pp.395-403
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• 2014

In this study, a steel pipe type rockbolt manufactured from special material was developed which has high strength and lightweight characteristics. Achievement of grout filling between rockbolt and hole wall was investigated through grout injection tests. Yield force of the developed rockbolt was also examined through tensile tests, which was compared with that of the deformed bar type rockbolt. In addition, the strength and elongation properties of the developed rockbolt were investigated through pull-out tests at three domestic sites showing different RMR classes. It is finally supposed that the developed rockbolt can be suitable for the permanent tunnel support because it has high strength and high durability rather than deformed bar type rockbolt.