생석회 파일을 이용한 얕은 사면 파괴의 안정화에 대한 기초 연구- 생석회 첨가에 따른 점성토의 특성 변화 중심으로 -

권무남,구정민 한국지반환경공학회 2006 한국지반환경공학회논문집 Vol.7 No.5

Quick lime made from limestone that are deposited abundantly in Korea has excellent potentials for stabilization of clayey soils. If Korea is able to take advantage of its abundant supply, economical efficiency could be achieved through mass production as well as being able to take advantage of utilization of natural resources. For stabilizing of clayey soil with lime, it is necessary to determine the required quantities of lime firstly and to evaluate the degree of stabilization with lime content. In this test, the quantity of lime required for 2 clayey soils which located in Seunggok and Bugok province respectively, and for 2 clay minerals - kaolinite and montmorillonite - were determined by ASTM C 977-92 and were evaluated for solidification of each samples with changing lime contents by Atterberg limit test and pH test. It was also evaluated for the improvement of each sample with lime content and curing time. The sample which added lime content determined by ASTM C 977-92 increased plastic limit, unconfined compression strength, and decreased pH in increasing trend. 국내 풍부하게 매장된 석회석에서 생산되는 생석회는 점성토의 안정화에 뛰어난 잠재성을 가지는데 생석회를 점성토의 안정화에 이용할 수 있다면 천연자원 이용측면에서도 장점을 가질 수 있다. 점성토의 안정화에 생석회를 이용하는 공법은 안정화에 필요한 생석회요구량의 결정과 생석회 함량에 따른 안정화의 정도가 우선적으로 평가되어야 한다. 본 실험에서는 성곡 및 부곡 지역의 점성토와 2종류의 점토광물- 카올리나이트계 및 몬모릴로나이트계 -에 대하여 ASTM C 977-92에 따라 안정화에 필요한 생석회요구량을 결정하였으며 아터버그실험 및 pH실험을 통하여 각 시료에 대하여 생석회첨가량을 변화시켜 고결화 정도를 평가하였다. 각 시료에 대하여 생석회첨가량과 양생기간을 변화시켜 개선여부도 평가하였다. 각 시료는 ASTM C 977-92에 따라 결정된 생석회량을 첨가함으로써 소성한계, 일축압축강도는 개선되었으며 pH값은 증가경향은 감소하였다.

토목섬유로 보강한 모래-벤토나이트 차수재의 장기적 투수특성

권무남,남효석,Kwon Moo-nam,Nam Hyo-suck 한국관개배수위원회 1998 한국관개배수논문집 Vol.5 No.2

A series of model tank and rigid wall permeameter tests was performed in order to determine the long-term hydraulic conductivity of the sand-bentonite liners reinforced by geotextile. Main conclusions are as follows 1. The maximum dry density and optimum

유류로 오염된 점성토의 지반공학적 특성 분석

권무남,김현기,Kwon, Moo-Nam,Kim, Hyun-Ki 한국농공학회 2005 한국농공학회논문집 Vol.47 No.1

This test was performed to evaluate the change of the unconfined compressive strength, strength parame¡?ters which resulted from direct shear test and oil residue percents analyzed by GC-MS as time lapse, oil addition. Unconfined compression strength of $10\%$ kerosene added by weight of dry soil recovered as time passed. In the case of $5\%$ kerosene added, the strength recovered as much as clean clayey soil after about 50 days passing. For the case of diesel added, the recovery of unconfined compressive strength was not shown even though about 60 days passed. The strength parameters (c, $\psi$) of kerosene added not changed but for diesel added, the cohesion was very decreased as diesel addition increased. Residual percent of kerosene in the soil was less than that of diesel as time passed.

현장 투수시험 방법

권무남,Kwon Moo-nam 한국관개배수위원회 1995 한국관개배수논문집 Vol.2 No.1

현장 투수시험 방법 중에서 Borehole type의 Boutwell Permeameter와 Constant head bore-hole permeameter, 그리고 Porous probe type의 cone shaped porous probe(BAT Permeameter)에 대한 내용을 간단히 소개하였고, 각 측정법의 특징을 비교분석한 내용을 요약하면 (표-1)과 같으며, 기회가 있으면 Infiltrometer type와 Underdrain type에

흙댐의 浸透水에 關한 硏究

權武男 慶北大學校 1983 論文集 Vol.35 No.-

In order to analyse the seepage flow phenomena through the earth dams, 39 kinds of model dams constructed were experimented according to the dam slope inclinations, the particle size of dam materials and the upstream water levels on the assumption that the flow is plane, steady and governed by Darcy's law. The results obtained are as follows: 1. The seepage line gradients were steep in proportion to the rise of the upstream water level and the increment ratio is disposed to decrease as the easiness of the dam slope inclinations but the particle size of the dam materials were not influenced to the variations of the seepage line gradients. 2. The dam slope inclinations were in direct ratio to the seepage line gradients, but the length of outcrop surface was in inverse proportion to it. 3. The position of outcrop point was upward tendency at the downstream slope surface as the rise of upstream water level and its height was approach to approximately 1/4-1/3 of the upstream water level. 4. The experimented and calculated results of the seepage line shape were in almost similar forms each other and the equipotential lines were proved the perpendicular arc to the flow lines. 5. The experimental seepage quantities were more than the calculated values and Schoklitisch's values were closed to the experimental values. 6. The seepage line for the core type section was similar to the cubic curve and the outcrop point was not appeared outward of the downstream slope surface.

점토-플라이 애시 혼합물의 지반공학적 특성

권무남,정성욱,이상호,구정민,김현기,Kwon , Moo-Nam,Chung , Sung-Wook,Lee, Sang-Ho,Goo , Jung-Min,Kim , Hyun-Ki 한국농공학회 2004 한국농공학회논문집 Vol.46 No.5

Although fly ash has possesses viable engineering properties, an overwhelming majority of fly ash from coal combustion is still placed in storage or disposal sites. This study was undertaken to investigate the physical and mechanical properties of clay-fly ash mixture and to furnish engineering data when fly ash utilized as engineering materials. This paper includes geotechnical properties of fly ash, clay-fly ash mixtures and results of compaction test, unconfined strength test, direct shear test, leaching test and stability analysis of clay-fly ash bank slope. If proper amount of fly ash was put in clay, the clay-fly ash mixture has an increase of unconfined strength and stability of bank slope.

水平荷重을 받는 말뚝의 解析

權武男 경북대학교 교육대학원 1977 논문집 Vol.8 No.-

The analytical method of the laterally loaded pile having various reaction coefficients of the ground and boundary conditions, was studied by using four kinds of independent functional values which satified with the basic differential equation. The obtained results are sumarized as follows; 1. For the long pile, this method may be apllicable in the range of L/T values, 4 to 5. 2. It is convenient to analyze the pile under the assumption of K values in the case of x_0=0 or n=0. 3. For the short pile, the functional values of the Table 1 to 4 could be determined easily by the numerical analysis, when K values are varied as underground depth of pile and the end conditions are complicated.

打設式 管井의 Developing工法에 關한 硏究

權武男,李基明,金照雄 慶北大學校 1975 論文集 Vol.20 No.-

The purpose of this study is to develop the economic and effective Developing machine and method for the maintenance of function and development of tube wells. The results studied in these experiments are as follows: 1. The ability from various Developing instruments, Sand-Excluding(Dry Weight), is more than 2 times to compare air compressor and surge plunger method with hand pump method. 2. The thickness of the formed filter layer influenced largely on the ability of concentrating water is about 7 centimeters under the methods of the Developing and the gravel packing. 3. The possible pumping rates and the draw down of water table on the same pumping rates (100tons/day) equal to the Developing and gravel packing method.

野山의 開墾方法 關한 硏究 : 葡萄團地 造成의 事例調査硏究 A Design Example of Grape growing Area

權武男 慶北大學校 새마을硏究所 1978 農村과 科學 Vol.1 No.-

This study was performed to establish the proper design method of grape growing area for mechanized farming in the land clearing of hillrock. The results obtained in this design example can be summarized as follows: 1. When the slope of ground surface are less than 8%, 8% to 15%, and 15% to 20%, the recommended grade of design slope was 6%, 11%, and 13% respectively. 2. In the above case, the width of terrace was determined to the values of 30m, 20m, and 15m, and the maximum cutting depth was determined to the values of 0.4m, 0.6m, and 0.8m respectively. 3. In this area, the route density of the road was determined to the 180m/ha and the longitudinal gradient of the road was less than 10%.

慶北地方의 콘크리트用 體材의 基本性質에 關한 硏究

權武男 慶北大學校 1977 論文集 Vol.23 No.-

This experiment was conducted to analyze the physical properties of the concrete aggregates in order to estimate the possibility of utilization based on the Korean Industrial Standard. The samples were collected at 27 districts in Kyungpook Province. The results summarized in this experiment are as the follows; 1. In general, as the aggregates have large gravity, the water absorption was decreased and the higher water absorption of coarse aggregates have, the higher quantity of abrasion should be had. 2. The unit weight and porosity of aggegates were adapted to the allowable values respectively except 4 and 3 districts in the two cases. 3. It was considered that the gradation of aggregates, sampled at 20 districts were available for the concrete execution, while the others were not. 4. The passing percent of No.200 sieve was satistisfied to the allowable range. Generally the concrete aggregates sampled in Kyungpook Province were adequate for concrete execution, but 7 districts were needed to be blended.