Lvliang Typical Loess Landslide Mechanism and Characteristics

2011 ◽  
Vol 90-93 ◽  
pp. 1313-1317 ◽  
Author(s):  
Dong Qi Tang ◽  
Jian Bing Peng ◽  
Qi Yao Wang ◽  
Ji Shan Xu

The loess area ecology environment is very fragile, happening various geological disasters, loess landslides is one of the most mainly the geological disasters in loess area. Lvliang region loess hilly develops common, with the human economic activities increasing, inducing a lot of loess landslides. Taking typical loess landslides as the main research object, the loess landslides of Lvliang region from two aspects of characteristics and mechanism are analyzed. It is considered that the main types of the loess landslides are located within the layer of loess. Landslide is controlled by topography and lithology, landslide mechanism is induced by human economic activities. Through research for the region loess landslides hazard prevention provide the scientific basis.

2012 ◽  
Vol 594-597 ◽  
pp. 1856-1863
Author(s):  
Wang Nai ◽  
Lan Min Wang ◽  
Zhong Xia Yuan ◽  
Wang Qian

In the light of heavy seismic landslide disasters in the valley city of loess area, 104 typical loess landslides caused by the 1654 Tianshui(Ms 8.0), 1718 Tongwei(Ms 7.5) and 1920 Haiyuan(Ms 8.5) earthquakes were studied, main landslide type and basic characteristics of seismic landslide in the valley city were analyzed. The landslides in the valley city of loess area are divided into three types: homogeneous loess landslide, loess interface landslide and loess-mudstone cutting layer landslide. Through the investigation and analysis of earthquake risk, the suggestion about the 22 dangerous landslides in Tianshui is given. The study is expected to supply scientific basis for seismic landslide disaster prevention and reduction in valley city of loess area.


2011 ◽  
Vol 90-93 ◽  
pp. 1291-1294
Author(s):  
Dong Qi Tang ◽  
Jian Bing Peng

With the rapid economic development of loess area, engineering loess landslides have become a serious danger to loess area people. It is an important engineering geological problem. Through making classify narrate to the harmful of engineering loess landslides. The main effects of engineering loess landslides are divided into four types. First type is human water activity cause loess landslides. Second is load and unload activities cause the loess landslides. Third is mechanical vibration effect inducing loess landslide. Fourth, loess landslides are induced by underground mining activities. Presents the performance characteristics and take conceive of engineering loess landslides to further research advances.


2015 ◽  
Vol 21 (1) ◽  
pp. 63-80
Author(s):  
Mihaela Preda ◽  
Iuliana Vijulie ◽  
Gabriela Manea ◽  
Alina Mareci

Abstract The coppersmiths’ uniqueness as a Roma clan is given by their traditional crafting legacy, as they themselves acknowledge. They are one of the more conservative Roma clans. Encouraged by their previous nomadic lifestyle, it hasn’t allowed them to blend with other clans or populations. Mixed marriages are forbidden and marriages with members of other Roma clans are rare. The aim of this study is to identify the elements that define the ethnic identity of the coppersmiths clan, to analyse the features that make out the coppersmiths’ customary identity, and to measure the self-segregation tendencies within the coppersmiths ethnic group. The main research methods were: bibliographic documentation, direct observation, field inquiries (structured interviews), and digital mapping. The research concluded the following: the coppersmiths are one of the extreme conservative clans, which have maintained their customary identity. The tendency of self-segregation is a direct consequence of their resistance towards anything modern, and the members of the coppersmiths clan believe that acting like the majority of society will only lead to the loss of their own identity. The consequences are mostly negative, e.g. poor school enrolment, marrying at an early age, an absence from modern socio-economic activities, etc.


2012 ◽  
Vol 226-228 ◽  
pp. 1365-1370
Author(s):  
Qi Xia Liu ◽  
Liang Fan

This article selected a typical loess slope engineering as the research object, and through the characteristics of loess landslide, landslide environmental geological conditions, the formation mechanism of the landslide study of the loess area of urban slope instability factors, loess slope stability of the calculation method and reinforcement measures. This paper adopts the theory of Morgenstern-Price to analyzing the stability of the slope, referencing with Sweden finite slice method, Simplified Bishop method, Simplify Janbu method. The reinforcement adopts the technology of possessed anchor to disposing the loess slope, and has good Practice effect. The loess slope stability study area has a large reference.


Author(s):  
M.S. Oborin ◽  
◽  
M.R. Martirosyan ◽  
◽  
◽  
...  

The evolution of economic relations, changes in the regimes and conditions of doing business naturally contributed to the formation of the institution of bankruptcy, which has economic and legal characteristics and content. The institution of bankruptcy is a mechanism for regulating macroeconomic and market processes by the state, controlling the stability of financial and economic activities in the regions of the country, regardless of the level of risk and industry affiliation of business entities. Bankruptcy of an enterprise —is an economic state of insufficient liquid assets to cover urgent obligations (subjective bankruptcy), which can be fixed in court (objective bankruptcy). One of the reasons that lead any business structure to ruin is the mistakes of the management structure when making strategic decisions regarding the alternative development of the company. Thus, the main component of effective enterprise development and forecasting of potential risks is a rationally developed management strategy. The purpose of the study is to clarify the substantive and procedural aspects of bankruptcy as a complex intersectoral institution and to develop a model of preventive and anti-crisis management of the risk of bankruptcy of enterprises. The main research methods are historical-legal, content-analysis of normative-legal acts regulating the issues of insolvency, analysis of statistical data on the studied problem, modeling. The article considers various directions of scientific and theoretical interpretation of the concept and signs of bankruptcy. The effectiveness of regulatory and economic methods and institutions of bankruptcy regulation in Russia has been evaluated. The stages of development of the conceptual foundations of insolvency related to the formation of legislation are presented. The structure of bankruptcy as a complex intersectoral institution is presented, taking into account the substantive and procedural aspects. The scientific novelty of the research lies in the development of a model of preventive and anti-crisis management of the risk of bankruptcy of enterprises, the significance of which lies in the predictive determination of key risks, taking into account the strategy and tactics of entrepreneurial activity. Successful foresight of negative changes in the external and internal environment, development of scenarios of compensation of consequences are most important in the prevention of insolvency. The directions of future research are related to the formation of a strategic management system focused on the characteristics of small and medium-sized businesses and the development of parameters for predicting the risk of bankruptcy.


Author(s):  
N. Kuzmynchuk ◽  
T. Kutsenko ◽  
L. Strygul ◽  
O. Terovanesova ◽  
S. Klepikova

Abstract. Modern views on the economic nature of countering raiding are a permanently important prerequisite for the stable development of the enterprises and the formation of a system of their effective management as the basis for ensuring economic security through the development and implementation of scenarios for countering raiders. The presented article is aimed at the use of the analytical and methodological tools regarding the introduction into the activities of the enterprise to ensure economic security in terms of countering raiding. Using the methods of forecasting and modeling the risk of raider seizure of the enterprises, scenarios for countering raiders (intensive, extensive and complex) have been developed for specifying and selecting the appropriate tools for making management decisions to ensure economic security. The results of forecasting of the enterprises activities showed a significant influence of the environmental factors (financial, economic, social, etc.) on the risk of raider seizure of the representative enterprises within the formed groups. This became the scientific basis for justifying the choice and implementation of the comprehensive scenario for preventing the risk of raider seizure which combines the strategic alternatives. The outcomes have confirmed the importance of the justification to support the choice and implementation of a comprehensive scenario for the risk preventing of raider seizure through the prism of the problems of ensuring the economic security of the enterprises in a transition economies. The comprehensive scenario of prevention of raider capture for the enterprises-representatives of the first group provides carrying out the constant analysis of financial and economic activity, introduction of mechanisms of stimulation of management and financing of risk protection. The following alternatives are proposed for the second group of enterprises with a high level of risk of raider capture, in particular: restructuring and separate accounting of the property complex, constant analysis of financial and economic activities, inclusion of government representatives in the board of directors, risk protection financing. The practical value lies in the formation and implementation of preventive and stimulating measures to counter raiding to ensure the economic security of the enterprise. This will allow the managers to use the tools to protect against raiding and strengthen of the economic security of the enterprise. Keywords: risk, raiding; security, modeling, management, forecasting, efficiency, usefulness. JEL Classification M11, M21, G30 Formulas: 10; fig.: 4; tabl.: 1; bibl.: 22.


2018 ◽  
Vol 5 (1) ◽  
pp. 21
Author(s):  
Samuel Tavares

This paper sought to find out how teaching techniques and procedures can work synergically to promote the development of active learning in the classroom, aiming to contribute to the consolidation of a scientific basis, both in its concrete application and theoretical foundation, by examining the practices of 11 engineering teachers, from three Brazilian universities located in São Paulo, whose classes were drawing attention from their course coordinators, due to the positive impact on their students’ learning, and who agreed to talk about their ideas and actions. The main research question was "Can Bloom and Kolb’s Ideas Help Us Reproduce Positive Experiences in Using Teaching Practices to Promote the Development of Active Learning in the Classroom? ". In face of the examined data, the answer to this question is “YES”, as shown in Figure 7.


Author(s):  
Yasmin Souza Silva ◽  
Luciana Lane Gomes Da Silva ◽  
Wellington Carlos Da Silva ◽  
Agrinazio Geraldo Nascimento Neto ◽  
Thalita De Sousa Pereira ◽  
...  

Introduction: Down syndrome is a genetic condition arising from three chromosomal abnormalities, namely trisomy 21 (the most well-known); translocation, and/or mosaicism. This chromosome change occurs in the formation of the fetus, in more detail at the time of cell division, which will characterize the signs and symptoms of the syndrome. Objective: The purpose of this article is to research the main scientific findings in the last 10                years regarding physical therapy treatments, to verify the best techniques and their respective results, and to address the role of physiotherapy in the development of children with Down syndrome. Methods: The research only included studies published in the period from 2009 to 2019, systematic review articles and limited the Portuguese and English languages ​​were excluded, excluding all incomplete articles, duplications, abstracts that did not address, and those works that do not have a scientific basis. Results: In this systematic review, it can be seen that the main research results were disseminated and stored in databases (SciELO, Medline, and LILACS), focusing on the study of and DS patients, specifical children in early childhood. There are few studies on down syndrome in adults. Another important aspect is the concentration of research in the field of sports physiotherapy, few studies have focused on other areas of physiotherapy, such as respiratory, cardiovascular, and cognitive physiotherapy, which go in the opposite direction. Conclusion: Physiotherapy for patients with DS can improve the quality and life expectancy of these individuals, but the needs of patients with this syndrome involve some physical, physiological and psychological aspects and require the attention of a multidisciplinary team.


Landslides ◽  
2020 ◽  
Vol 17 (3) ◽  
pp. 677-686
Author(s):  
Wenhui Shi ◽  
Yanrong Li ◽  
Weiwei Zhang ◽  
Jin Liu ◽  
Shengdi He ◽  
...  

AbstractOn 15 March 2019, a fatal deep-seated landslide occurred at the village of Zaoling in Xiangning County of Shanxi Province, China. Extending to an area of about 120 m by 85 m, with an estimated displaced mass volume of 72,000 m3, the landslide left 20 people dead, 13 injured, and 8 buildings destroyed. There were no precursory signals prior to the event, and usual triggering mechanisms for a landslide were absent. Investigation conducted immediately after the incident revealed that the landslide was initiated in a 1.0 to 1.5-m thick-softened layer located at 40 m depth along the contact between the loess and interbedded paleosol layer. This softened layer was highly saturated due to the perched water on top of the relatively impervious paleosol layer and became a critical weak zone since the shear strength of loess is very sensitive to water content. We suggest that the perched water originated from extensive long-term unsaturated seepage of rainwater and local rapid percolation along preferential channels such as sinkholes and root network. The Zaoling landslide confirms that unlike most landslides in non-loess areas, loess landslides can occur without identifiable triggering events. They can result from gradual build up of instability due to slow (in the span of hundred years) accumulation of deep soil water. Based on the lessons learned from this landslide event, suggestions are given for the planning of urban and rural development in loess areas. Due to the fact that the process leading to the development of such a landslide is largely concealed, further research should be aimed at gaining a more thorough understanding of the mechanism of this landslide type.


2012 ◽  
Vol 190-191 ◽  
pp. 1227-1233
Author(s):  
Qi Xia Liu ◽  
Liang Fan

This article selected a typical loess slope engineering as the research object, and through the characteristics of loess landslide, landslide environmental geological conditions, the formation mechanism of the landslide study of the loess area of urban slope instability factors, loess slope stability of the calculation method and reinforcement measures, the loess slope stability study area has a large reference.


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