Bulletin of the Geological Society of Malaysia最新文献_第8页

Effect of void ratio to the strength parameters of sedimentary rocks 孔隙比对沉积岩强度参数的影响

Bulletin of the Geological Society of Malaysia Pub Date : 2019-12-31 DOI: 10.7186/bgsm68201915

H. Awang, I. Ki, R. Abdullah

{"title":"Effect of void ratio to the strength parameters of sedimentary rocks","authors":"H. Awang, I. Ki, R. Abdullah","doi":"10.7186/bgsm68201915","DOIUrl":"https://doi.org/10.7186/bgsm68201915","url":null,"abstract":"This paper is to study the influence of void ratio on the compressive and shear strength of sedimentary rocks at different degree of weathering. As void ratio is related to porosity therefore the present of void ratio should influence the mechanical properties of the porous sedimentary rocks such as sandstone and limestone. In order to determine the microstructures including pores and cracks of the samples, sandstone and limestone from different weathering grades were analyzed using photomicrograph analysis method. From the image of photomicrograph, the void ratio of the sample was calculated using image processing technique. The uniaxial compression and triaxial tests were carried out to determine the compressive and shear strength of the same samples by using GCTS Testing System. Results for void ratio, compressive and shear strength of the four different weathering grades of rocks were correlated to see the trend of relationships between the void ratio and the mechanical properties. In relation to weathering grades, the void ratio of the sedimentary rocks increases as the degree of weathering increases. The results also show that the void ratio and mechanical properties of sandstone are closely related. With the increase of void ratio, the compressive strength and shear strength decrease.","PeriodicalId":39503,"journal":{"name":"Bulletin of the Geological Society of Malaysia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46725533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Utilization of drone-based photogrammetry for feasibility analysis of potential relocation area in Maleber District, Kuningan Regency, West Java 利用无人机摄影测量对西爪哇库宁甘县Maleber区潜在搬迁区进行可行性分析

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201903

Iqbal Eras Putra, Kibar Muhammad Suryadana, S. Sumaryono, Y. D. Triana

引用次数: 0

Characterization of groundwater in fractured granite at SILK Highway along Kajang – Sungai Long, Hulu Langat, Selangor 雪兰莪州Hulu Langat Kajang–Sungai Long沿线SILK公路断裂花岗岩的地下水特征

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201908

Muhammad Fuad Razali, N. Roslan

引用次数: 0

Integration of UAV photogrammetry and kinematic analysis for rock slope stability assessment 基于无人机摄影测量与运动学分析的岩质边坡稳定性评价

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201913

S. K. Nagendran, M. Ismail, Wen Yan Tung

引用次数: 2

Issues, reality and role of geologists on hill site development in Malaysia – Case study from a luxurious housing project in Taiping, Perak 地质学家在马来西亚山地开发中的问题、现实和作用——以霹雳州太平的一个豪华住宅项目为例

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201904

T. Jamaluddin, H. Hussin, M. Sulaiman

引用次数: 0

Some deep-marine ichnofossils from Labuan and Klias Peninsula, west of Sabah 沙巴西部纳闽和克利亚斯半岛的一些深海鱼化石

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201906

B. Jasin, Mohd Firdaus

{"title":"Some deep-marine ichnofossils from Labuan and Klias Peninsula, west of Sabah","authors":"B. Jasin, Mohd Firdaus","doi":"10.7186/BGSM67201906","DOIUrl":"https://doi.org/10.7186/BGSM67201906","url":null,"abstract":"The Temburong Formation comprises fine grain flysch, deposited in a distal part of a submarine fan system. Twenty five taxa of ichnofossils were identified. The ichnofossils are grouped into the Nereites ichnofacies. The ichnofacies was further divided into two subichnofacies namely Paleodictyon and Ophiomorpha rudis subichnofacies. The Paleodictyon subichnofacies is characterized by a high diversity of ichnofossils, discovered in the medium to thinly bedded turbidite at a distal lobe of a submarine fan. The Ophiomorpha rudis subichnofacies contains low diversity and is commonly found in thick-bedded sandstone channels and proximal lobes of a submarine fan system. Abstrak: Formasi Temburong tediri daripada endapan “flysch” berbutir halus yang diendapkan pada bahagian hujung suatu system kipas laut dalam. Dua puluh lima taksa ichnofosil telah dikenal pasti. Ichnofosil dikelompokkan kepada ichnofasies Nereites. Ichnofasies ini dibahagi pula kepada dua subichnofasies iaitu subichnofacies Paleodictyon dan Ophiomorpha rudis. Subichnofasies Paleodictyon dicirikan oleh kepelbagaian yang tinggi ichnofosil yang ditemui dalam tubidit yang berpelapisan nipis dan sederhana di bahagian hujung cuping kipas laut dalam. Subichnofasies Ophiomopha rudis mengandungi kepelbagaian yang rendah dan sering ditemui dalam batu pasir tebal pada palung dan pangkal cuping sesuatu sistem kipas laut dalam.","PeriodicalId":39503,"journal":{"name":"Bulletin of the Geological Society of Malaysia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48521268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

The Setap Shale Formation on either side of the Baram Line Divide: Facies aspects and tectonic implications Baram线分水岭两侧的Setap页岩组：相面和构造意义

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201907

J. Jong, JX Nippon, Malaysia Gas Exploration Limited, F. Kessler, G. GoldbachGeoconsultantsO

引用次数: 4

The adsorption of Direct Brown 1 dye using kaolinite and surfactant modified kaolinite 高岭土和表面活性剂改性高岭土对Direct Brown 1染料的吸附

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201905

M. Jeeva, S. K. Lakkaboyana, W. Zuhairi

引用次数: 6

Efficiency analysis of seepage of Baz Ali small dam, Kurram Agency using clay blanket and cut-off wall with sand filter 库拉姆坝巴兹阿里小坝采用粘土毡和砂滤防渗墙的渗流效率分析

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201914

Arshad Ullah, Azman Kassim, I. Alam, M. Junaid, I. S. Ahmad

{"title":"Efficiency analysis of seepage of Baz Ali small dam, Kurram Agency using clay blanket and cut-off wall with sand filter","authors":"Arshad Ullah, Azman Kassim, I. Alam, M. Junaid, I. S. Ahmad","doi":"10.7186/BGSM67201914","DOIUrl":"https://doi.org/10.7186/BGSM67201914","url":null,"abstract":"Seepage always eventuates through the foundation of all dams. The flow of water through the dam body generate seepage forces and endanger the dam stability due to piping. Controlling seepage after construction is quite difficult and an expensive job, hence proper practices should be adopted for seepage remediation in the designing stage. In order to investigate the more effective techniques among downstream (D/S) sand filter with upstream (U/S) clay blanket and cutoff wall, the Baz Ali small dam was analyzed using finite element approach SEEP/W 2D. The seepage behaviour through the dam was intuited by employing 1 m thick clay blankets on the upstream side with extending lengths of 50 m, 100 m, 150 m, 200 m, 250 m and 300 m. Furthermore, 5 m, 7.5 m and 10 m deep cut-off walls having 0.5 m and 1 m thickness were embedded for seepage mitigation. The seepage values obtained from SEEP/W 2D models were compared with each other. The SEEP/W 2D results and cost analysis show that clay blanket is more effective and an economical technique than a cut-off wall for tackling seepage issue. Hence, an upstream blanket of 100 m length is more efficient to diminish the seepage up to 58.65% in contrast to the base case without the remedial system.","PeriodicalId":39503,"journal":{"name":"Bulletin of the Geological Society of Malaysia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42705842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Radioactive apatite-rich “Hot Sands” of the Tenggol Arch: Stratigraphic curiosity or sub-seismic reservoir correlation tool? 腾格尔拱门富含放射性磷灰石的“热砂”：地层好奇心还是亚地震储层对比工具？

Bulletin of the Geological Society of Malaysia Pub Date : 2019-06-01 DOI: 10.7186/BGSM67201901

J. Jong, JX Nippon, Malaysia Gas Exploration Limited, F. Kessler, M. Madon, H. Mohamad, G. GoldbachGeoconsultantsO

{"title":"Radioactive apatite-rich “Hot Sands” of the Tenggol Arch: Stratigraphic curiosity or sub-seismic reservoir correlation tool?","authors":"J. Jong, JX Nippon, Malaysia Gas Exploration Limited, F. Kessler, M. Madon, H. Mohamad, G. GoldbachGeoconsultantsO","doi":"10.7186/BGSM67201901","DOIUrl":"https://doi.org/10.7186/BGSM67201901","url":null,"abstract":"A review of Late Oligocene to Early Miocene reservoir sandstones in the Tenggol Arch area has identified a number of intervals with anomalous radioactive levels within the K, J, and I Tertiary sequences. A correlation between spikes on the spectral gamma ray logs and petrographic analysis of cores and cutting samples points to Thorium-bearing, apatite-rich sandstones and siltstones as the main source of radioactivity. The elevated radioactivity levels occur within meandering channel sequences with sediment derived from the Malay Peninsula, the Johor Platform and perhaps some local cuesta ridges nearby on the Tenggol Arch. Commonly, the anomalous radioactive intervals are represented by flasersand/silt and clay associations. Given the relatively thin radioactive intervals, measuring at most a few metres, these sandy intervals cannot be imaged on seismic data, but could be used as a tool for correlating reservoir units at reservoir or field scale. Furthermore, the high radioactivity due to Thorium (Th) and Uranium (U) could lead to wrong estimates of clay and sand percentages, unless they are corrected with the help of spectral gamma ray logging.","PeriodicalId":39503,"journal":{"name":"Bulletin of the Geological Society of Malaysia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43107400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3