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The Risk Analysis of Geological Disaster Based On GIS [PDF]
Proceedings of the 2016 2nd International Conference on Education Technology, Management and Humanities Science, 2016 Risk analysis of geological disasters is a new field appears in recent year which attracts more and more people's attention. Geological disaster risk refers to geological disasters and their possible damage losses on human activities. In this paper, the definition and concept of geological disaster risk elements are analyzed, the application of GIS in ...
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Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas
Deep Underground Science and Engineering, EarlyView.This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou +9 more
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Dizhen xuebao基于汶川MS8.0地震后在窦圌山坡顶和坡脚测点获得的9次余震记录，通过基线校正、滤波处理，得到各余震记录的傅里叶谱谱比及质点运动轨迹图，结果表明山体的自振频率具有多阶段性，其最大位移方位会出现在山体的横向或走向上，且山体存在偏振效应。将9次余震东西向和南北的水平向加速度时程以10°为单位进行分解得到324条新的时程曲线，基于分解合成后的时程记录，将坡顶与坡脚相同分解角度下的时程作比值，对其峰值加速度比和傅里叶谱谱比进行分析，结果表明二者最大值所在的方位均与山体最大位移所在的方位相同 ...
Wei Wang +5 more
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Deep Underground Science and Engineering, EarlyView.This paper conducts a numerical simulation study on the construction of a deep‐buried tunnel in an anisotropic stratum area. A statistical analysis of the effects of two anti‐faulting design measures, namely, a conventional design and an articulated design, is carried out, and the results demonstrate the effectiveness of the anti‐faulting structures ...
Shiqi Liu +3 more
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Dizhen xuebao基于西吉、海原和固原的野外调查资料建立了典型斜坡场地概化数值模型，通过选择合理动力人工边界，探究地震动频谱特性对黄土斜坡地震响应的影响。结果表明：① 斜坡加速度受地震动输入频率影响较大，在输入不同频率地震动时，不同监测点加速度峰值放大系数呈现不同变化趋势，同时，速度和位移受地震动输入频率影响较大，各监测点的峰值速度和峰值位移随频率的变化趋势一致；② 低频是诱发斜坡失稳的关键频段，高频振动下斜坡不易发生失稳破坏，斜坡对低频地震波存在放大作用，对高频地震波具有一定的“滤波”作用；③ 随着高程的增加 ...
Xuechen Sun +5 more
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Deep Underground Science and Engineering, EarlyView.To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong +6 more
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Scientific ReportsThe fortification system of the tunnel structure spanning the active fault, such as the failure mechanism and fault-resistant design (measures), has not been thoroughly established.
Jianyi Zhang +4 more
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Deep Underground Science and Engineering, EarlyView.This study presents large‐scale similarity model testing (geometric ratio 3.6) of an innovative multiple‐layered lining system—comprising exterior precast segments, middle self‐compacting concrete, and an interior steel pipe—for high‐pressure (0.75 MPa) water conveyance tunnels.
Ramin Asadi +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu +4 more
wiley +1 more source
, 1915 Geological map shows the townships of Goldsborough and Dunolly near an intersection of the parishes of Painswick and Barp, both in the county of Gladstone. Relief shown by hachures.; Also available in an electronic version via the internet at: http://nla.
Geological Survey of Victoria.
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