Search Results - "soft rock"

Bolt-grouting combined support technology in deep soft rock roadway by Yanlong Chen, Qingbin Meng, Xu, Guang, Haoshuai Wu, Guimin Zhang

“…Analyzing the mineral composition, mechanical properties and ground stress testing in surrounding rock, the study investigated the failure mechanism of deep soft rock roadway with high stress. The bolt-grouting combined support system was proposed to prevent such failures. …”
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Effects of Freezing and Thawing Cycle on Mechanical Properties and Stability of Soft Rock Slope by Chen, Y., Wu, P., Yu, Q., Xu, Guang

“…To explore the variation laws of mechanical parameters of soft rock and the formed slope stability, an experiment was carried out with collected soft rock material specimens and freezing and thawing cycle was designed. …”
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Design of excavation method of Tunnel in soft rocks based on displacement data obtain from back analysis by Daraei, R., Sharifzadeh, Mostafa, Aghababaei, H.

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Proposed constants for Bieniawski’s strength criterion for rocks and coal by Bineshian, Hossein, Rasouli, Vamegh, Ghazvinian, Abdolhadi, Bineshian, Zahra

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Behaviour of stiff clayey soils using fracture mechanics approach by Fauziah, Miftahul

Subjects: “…soft rocks…”
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Reflection seismic with DAS, why and where? by Urosevic, Milovan, Bona, Andrej, Ziramov, Sasha, Martin, R., Dwyer, J., Foley, A.

“…During the last decade the Distributed Acoustic Sensing (DAS) data acquisition has been tested in boreholes in a soft rock environment with a variable success. The technology is now approaching its maturity and it is showing a high potential. …”
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A study on permeability of soil cement / Panbarasi Govindasamy and Felix Ling Ngee Leh by Govindasamy, Panbarasi, Felix Ling, Ngee Leh

“…The generated permeability parameters will indirectly become a guide in the preliminary soil cement stabilisation to modify the properties of the soil to become more like the properties of a soft rock.…”
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Characterization of weathered rock for excavation work / Mohd Akmal Arif Hj Mohd Zafri by Hj Mohd Zafri, Mohd Akmal Arif

“…The engineering properties of weathered rock are very critical especially related to quantifying whether it is a rock, soft rock or hard material. The vast definitions of weathered rock always resulted to disputes between the practitioners, client and contractor in interpreting the rock state. …”
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Effect Of Controllable Parameters On Rock Fragmentation At Imerys Mineral (M) Sdn Bhd by Zam Hariro, Aini Yusriena

“…The results of physical test showing that the limestone is in soft rock category. A few factors affect the geology of rock and resulting influence the strength of rock. …”
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Evaluation Study of Boundary and Depth of the Soil Structure for Geotechnical Site Investigation using MASW by Arisona, A., Nawawi, Mohd., Khalil, Amin E., Nuraddeen, U.K, Hariri, Mohd., Fathi, M.A.

“…This structure is interpreted as partially saturated soil zone, the soil is typically very dense. It contains soft rock typically fill with cobble, sand, slight gravel and highly weathered at depth of 18 to 30 m with Vp of 255 to 300 m/s. (3) Saturated soil zone at a depth of 8 to 18 m with Vp of 300 to 390 m/s. …”
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Study on the relation between mineral compositions of rock and construction characteristics of tunnel in cold regions: a case by Shang, Yanliang, Du, Shouji, Gao, Honghong, Han, Tongyin

“…The detection results show that rock of tunnel contains high hardness minerals such as quartz and feldspar which were proven by initial engineering geological investigation report, in addition, it also contains several kinds of low hardness minerals including inclined chlorite and illite which may exhibit large deformation characteristic of soft rock after the tunnel excavation in case of meeting water and weathering conditions. …”
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Numerical modelling of shaft lining stability by Jia, Yudan

“…Specifically, practical finite difference modelling approach for analysing shaft lining stability through the Marl and Potash strata at Boulby mine UK has been developed using the commercially available software FLAC2D/FLAC3D (ITASCA 2008). A soft rock Marl occurs close to the bottom of the two deep shafts at the mine. …”
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Progressive Damage Mechanism of Rocks Subjected to Cyclic Loading by Geranmayeh Vaneghi, Rashid

“…The investigation revealed the greater susceptibility of hard rocks to cyclic loading compared to soft rocks.…”
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Deformation and failure processes of kaolinite under tension: Insights from molecular dynamics simulations by Yang, H., He, M., Lu, Chunsheng, Gong, W.

“…As a primary constituent of soft rocks, kaolinite plays an important role in large deformations of underground structures, which usually leads to serious safety risks. …”
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Boring of Intertidal Sandstones by Isopod Sphaeroma triste in NW Borneo (Sarawak, Malaysia) by Dodge-Wan, D., Ramasamy, Nagarajan

“…Although several Sphaeromatid species are known to bore into soft rocks, this is the first report and comprehensive description of boring into sandstone substrates by S. triste. …”
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