安沟隧道左洞ZK11+344塌方处理施工技术

本文以十堰至白河高速公路安沟隧道左洞 ZK11+344～+412段塌方为例，介绍了一种隧道塌方的具体处理措施及塌方处理注意事项，以供相关专业技术人员借鉴。     

尼夫沟隧道特大型塌方处理

隧道塌方是隧道施工中常见的地质灾害,通过尼夫沟隧道特大型塌方的成功处理,对注浆再开挖技术在大型及特大型隧道塌方处理中的应用进行了较为详细的分析。     

武广客运专线某隧道塌方处理技术探讨

通过武广客运专线某隧道塌方处理的工程实例，介绍大断面软弱围岩隧道塌方处理的施工技术和步骤，以供在类似的隧道塌方处理中借鉴应用。     

王坑隧道塌方处理施工技术

结合工程概况，介绍了隧道塌方的经过及施工情况，从地质、施工组织、施工质量三方面分析了隧道塌方的原因，并结合现场实际状况，制定了具体的塌方施工处理方案，以保证施工的顺利进行。     

文尖岭隧道塌方处理

通过对文尖岭隧道工程概况的描述,介绍了两次隧道塌方情况及产生原因,并总结了相应的塌方处理方案,以保证将来隧道运营的安全,同时为同类型隧道塌方的判断、处理积累经验。     

浅议隧道塌方的预防与处理

针对隧道塌方问题，从新奥法施工支护结构原理和不良地质提前预报分析处置，对隧道塌方原因进行了分析，并以平衡理论为依据，提出了隧道塌方的处理方法。     

省道S212线峰山隧道塌方处理

文章针对隧道塌方,结合工程实例,阐述了隧道塌方的原因及处理方法,提出了在相似地质条件下,通过水文地质和工程地质的定性分析,预测可能出现不良地质现象的地段,结合新奥法收敛数据,介绍预防隧道塌方及处理通天塌方的施工经验。     

关家台隧道塌方原因分析及处理方案

以关家台隧道塌方处理为例,介绍了隧道塌方情况同时分析了塌方原因,并且在阐述塌方处理原则、选择处理方案的基础上,重点归纳了具体施工方案及注意事项,以期为类似工程积累经验。     

浅析岩土锚固技术及其在处理隧道塌方施工中的运用

隧道在建设和运营过程中会出现过不同程度的塌方现象，造成了很大的经济损失和人员伤亡，严重影响了工程的顺利实施。如何预防隧道塌方以及在隧道塌方问题发生之后如何及时的进行处理，已经成为建设各方探究的重要课题。文章阐述了岩土锚固技术的现状和原理，详细分析了岩土锚固技术在隧道塌方处理中的应用。     

以某新区市政隧道为例谈隧道塌方处理及效果评价

以某新区市政隧道一处塌方的处理为例,针对该塌方事故具体情况提出了处理措施,并对处理效果进行了分析和归纳,通过现场监测数据证明塌方处理方案是可靠的,对类似围岩隧道的施工及塌方处理有一定的借鉴作用。     

贵阳南江峡谷滑坡成因及支护研究

通过对贵阳南江峡谷滑坡的现场调查、钻孔勘探资料的分析,阐明该滑坡发生的主要原因是以老滑坡为基础,公路施工切坡使其失去支撑,降雨又为滑坡提供了诱发条件。最后,分析支护措施,从预防和经济的角度提供边坡治理的经验。     

Landslide distribution and size versus relative relief (Shaanxi Province,China)

The present study aims to investigate the distribution and size of landslides in relation to relative relief. For this, a landslide inventory map of the area was developed from the interpretation of satellite images and detailed field survey. From this we could map 331 landslides in Ningqing County (Shaanxi Province). By using GIS and statistical approaches, we studied the coupling between landslide size distribution and relative relief. From this the control of relative relief on the rollover effect of the size distribution of landslides is obtained. The result shows that the landslide frequency-relative relief distribution is unimodal, with majority of landslides occurring in areas with relative reliefs in between 300 and 400. The relative number density of landslides decreased with the increase in the relative relief; on the contrary, the average area, average length and average width of landslide increased with the increase in relative relief. The percentage of large-scale landslide increased with the increase of relative relief or vice versa. In addition, the cumulative frequency-area distributions of these landslides empirically agree well with a power-law relation with an exponent of 1.776 above a certain size threshold. Below this value, it exhibited an obvious rollover effect. Further analysis has shown that landslide cumulative frequency-area curve is strongly influenced by relative relief. The rollover effect is more obvious with the increase of relative relief. The exponent of power law correlation gradually increased from 0.993 to 1.872 with increasing relative relief.     

公路联体隧道中导洞塌方处理及预防

结合浙江诸永高速公路杨家联体隧道中导洞塌方施工，介绍了在联体隧道中导洞塌方处理时遇到的技术难题及其解决办法，并提出施工中应注意的问题及相应的预防措施，以期指导实践。     

韩家垭滑坡数值仿真模拟

以襄十高速公路韩家垭滑坡为工程背景 ,开发计算机仿真系统设计平台。该系统平台构建滑坡区域所处的地理环境、位置、地形地貌、公路等的虚拟世界 ;建立三维地形地貌、水文、地质模型和治理措施的数据库实时查询系统 ,提供对三维模型的全方位观察、空中俯瞰的视觉效果 ;模拟了边坡失稳的动态过程和结果。为高速公路的边坡和滑坡设计、治理提供了重要的技术支撑     

地铁区间暗挖隧道坍方事件的抢险处理

城市地铁常采用浅埋暗挖法施工,围岩情况普遍较差,变化多,地下水丰富,隧道坍方冒项的风险很大,发生概率也大,如何在地表建筑物密集,交通繁忙的地段迅速处理好坍方事故,避免事态的进一步扩大,是设计和施工人员普遍关心的问题.文章以南京地铁二号线区间隧道矿山法施工过程中一次坍方事件的抢险处理过程为实例,介绍了此类突发事件的处理程序和方法,以最快的时间恢复正常施工,及时、有效地降低损失,减小影响.     

Exploring spatial non-stationarity in the relationships between landslide susceptibility and conditioning factors: a local modeling approach using geographically weighted regression

Landslide susceptibility is the likelihood of landslide occurrence, in a specific place and time. The identification of the potential relationships between landslide susceptibility and conditioning factors is very important towards landslide hazard mitigation. In this paper, we implement a local statistical analysis model geographically weighted regression, in two catchment areas located in northern Peloponnese, Greece. For this purpose, we examined the following eight conditioning factors: elevation, slope, aspect, lithology, land cover, proximity to the drainage network, proximity to the road network, and proximity to faults. Moreover, the relationship between these factors and landsliding in the study area is examined. The local statistical analysis model was also evaluated by finding its differences with the performance of a standard global statistical model logistic regression. The results indicated that the global statistical model can be enhanced by the application of a local model. The outputs of the proposed approach favored a better understanding of the factors influencing landslide occurrence and may be beneficial to local authorities and decision-makers dealing with the mitigation of landslide hazard.

     

唐家山堰塞湖库区马铃岩滑坡地震复活效应及其稳定性研究

 马铃岩滑坡位于唐家山堰塞湖内上游约4 km的通口河左岸,在堰塞湖抢险过程中备受关注。在对滑坡基本地质条件和地震前、后变形破坏迹象现场地质调查基础上,对震后、尤其是唐家山堰塞湖形成后滑坡稳定性进行了系统分析和计算。计算结果表明,各种不同工况下震后滑坡整体稳定,只是靠上游侧前缘受地震、堰塞湖蓄水及泄水水位骤降等因素影响存在局部失稳,马铃岩滑坡不会对下游唐家山堰塞坝溃坝以及未来堰塞湖综合治理工程产生不利影响,但震后重建工作中应注意靠上游侧滑坡体前缘一带不稳定对坡体上数十户居民造成的潜在危害。就马铃岩及地震重灾区其他古滑坡体而言,地震对大型古滑坡复活主要受控于其地形坡度及微地貌特征,地形坡度40°以上以及由缓变陡的转折部位是古滑坡整体或局部容易被地震触发失稳的充分条件,并非所有的古滑坡体均会被地震诱发而整体复活。     

滑坡地质灾害远程监测预报系统及其工程应用

 露天矿边坡稳定性监控预报技术研究,对滑坡地质灾害防控具有重要意义。以滑体、滑床和监控锚索相互作用力学原理为理论基础,提出滑体和滑床相对运动状态的力学监测原理,把多因素监测变为单一滑动力力学量监测,给出滑动力与监控预紧力的关系。通过滑坡物理模型试验得出,在滑坡发生前,边坡岩体内应力会连续发生变化,当滑动力大于抗滑力后,边坡岩体会发生变形和滑动,且捕捉边坡岩体内应力的变化优于对岩体位移的监测。基于上述原理和试验结果,开发了滑坡地质灾害远程监测预报系统,实现摄动力动态变化的远程实时监测。提出4种监测预警模型,通过对露天矿山边坡等的现场实践应用,该监控新技术成功地进行边坡稳态实时监控和预测预报。     

谈高速公路的滑坡治理

针对山区高速公路经常出现滑坡病害的现象,结合边坡加固防护工程设计原则及依据提出相关防治措施,从而使人们加深了对滑坡的认识,更好的研究滑坡预防措施,保护人民生命安全。     

Numerical modeling of deep-seated landslides interacting with man-made structures

This paper describes the interaction between deep-seated landslides and man-made structures such as dams, penstocks, viaducts, and tunnels. Selected case studies are reported first with the intent to gain insights into the complexities associated with the interaction of these structures with deep-seated landslides (generally referred to as deep-seated gravity slope deformations, DSGSDs). The main features, which characterize these landslides, are mentioned together with the interaction problems encountered in each case. Given the main objective of this paper, the numerical modeling methods adopted are outlined as means for increase in the understanding of the interaction problems being investigated. With the above in mind, the attention moves to an important and unique case history dealing with the interaction of a large-size twin-tunnel excavated with an earth pressure balance (EPB) tunnel boring machine (TBM) and a deep-seated landslide, which was reactivated due to the stress changes induced by tunnel excavation in landslide shear zone. The geological and geotechnical conditions are described together with the available monitoring data on the landslide movements, based on the advanced and conventional monitoring tools used. Numerical modeling is illustrated as an aid to back-analyze the monitored surface and subsurface deformations and to assist in finding the appropriate engineering solution for putting the tunnel into service and as a follow-up means for future understanding and control of the interaction problems. The simulation is based on a novel time-dependent model representing the landslide behavior.