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1.
盱眙县矿山地质环境治理与保护探讨   总被引:2,自引:0,他引:2       下载免费PDF全文
严军  邓涛 《江苏地质》2009,33(4):443-446
矿业开发对盱眙经济发展起到了一定作用,但历史上的乱采滥挖对生态环境造成严重破坏,废弃宕口遗留的高陡边坡存在严重的地质灾害隐患.通过关停和矿山整合等措施的落实,保护矿山环境;通过废弃宕口的地质环境治理,在消除地质灾害隐患的基础上,让昔日满目疮痍的废弃宕口披上绿装,修复生态,再造青山绿水,真正做到开发、保护、治理同步进行.  相似文献   

2.
孙清林  方明 《江苏地质》2009,33(1):40-42
针对矿山宕口边坡的现状,阐述了宕口边坡环境治理的步骤,宕口边坡的治理方法,介绍了原层基材喷附工程、植被工程,植被管理工程技术体系在矿山宕口边坡治理中的应用.对迅速建立符合绿化目标和自然植被演变规律、有效改善和恢复矿山宕口边坡的荒废生态系统,并与周边环境相协调的植被建设理论和方法,具有一定的借鉴价值.  相似文献   

3.
采用加权综合指数法,基于地理信息系统(GIS)技术,综合评价了北京市矿山地质环境并对成因进行分析。结果表明:北京市矿山地质环境呈现不平衡的空间分布特征,较差区分布在西南部(位于门头沟和房山区内)及北部(位于密云县和怀柔区内),占需治理矿山面积的50.8%;一般区除分布在西南部(位于房山区内)外,在中部(位于昌平、平谷、怀柔、顺义和密云县内)也有大面积分布,占需治理矿山面积的41.5%;较好区在西北(位于怀柔区和延庆县内)、西南(位于房山区内)和中部(位于怀柔南部和平谷西部)均有分布,占需治理矿山面积的7.8%。导致矿山地质环境较差区形成的主要成因指标有矿山未治理面积小和岩土体工程地质条件差;主要结果表现指标有占用破坏土地面积大和危害与损失情况严重。  相似文献   

4.
林继红  李思谕 《江苏地质》2006,30(2):158-160
废弃矿山治理是目前政府十分关注的问题。介绍了田村沸石矿宕口环境治理和生态恢复工程,通过喷播复绿方案及实施,消除了边坡发生地质灾害的可能性,使景区的环境得到了一定的恢复,对其他地方的宕口整治有借鉴作用。  相似文献   

5.
矿山正常的生产经营活动势必形成一定的矿山地质环境问题。为全面贯彻生态文明思想,牢固树立“绿水青山就是金山银山”的理念,按照恢复生态、兼顾景观总体要求,因地制宜、多措并举,扎实开展废弃露天矿山地质环境修复。依据矿山地质环境保护与恢复的相关规范与要求,以汶川某废弃露天矿山为例,从矿山环境角度介绍了矿山地质环境的影响因素,开展矿山斜坡整体稳定性、采场边坡稳定性、弃渣堆稳定性及地形地貌景观破坏等地质环境影响评价,划分治理重点、次重点和一般3个基本的矿山地质环境保护与恢复防治区。结果表明: 矿山斜坡及弃渣堆现状基本稳定、采场边坡稳定性较差、地形地貌景观影响和破坏程度中等; 研究区矿山地质环境保护与恢复治理可划分为一般防治区和较严重防治区,其中一般防治区面积约554 m2(矿区无因采矿活动诱发的地质灾害,影响区内无居民居住,无威胁对象,矿区及周围地表水体未漏失,矿业活动对水土环境影响程度为影响程度小,未影响到矿区及周围生活供水)、较严重防治区面积186 m2(矿区与影响区地质灾害发生可能性小,地形地貌景观影响和破坏程度较严重)。针对评价结果提出的“坡面浮石清理+清除建筑垃圾、块石+植被重建”等修复建议,为同类型矿山绿色开采及地质环境保护措施提供了的重要技术参考依据。  相似文献   

6.
魏旭  夏琼  高东升  李磊  颜伟华  江冬明 《安徽地质》2021,31(1):76-80,85
本文通过对含山县清溪镇应村建筑石料用白云岩矿矿山地质环境影响评估、矿山土地损毁预测与评估、矿山地质环境治理分区与治理等方面进行评价,提出了矿山地质环境保护与治理建议.得出结果:矿山已损毁土地面积9.06hm2,最终损毁土地面积11.35hm2.划分出:露天采场挖损损毁土地破坏地形地貌景观重点防治区(Ⅰ)、工业场地压占损毁土地破坏地形地貌次重点防治区(Ⅱ)和矿山外围地质环境影响一般防治区(Ⅲ).  相似文献   

7.
黄永高 《地质与资源》2011,20(5):391-395
以广西某石灰岩矿山为例,着重介绍矿山地质环境影响评估的基本思路、分析方法及防治对策.在了解矿山基本情况和查清矿山地质环境问题的基础上,结合采矿工程场地地形及工程活动特点,从地质灾害、含水层、地形地貌景观和土地资源4个方面,对矿山配套工程逐项进行了矿山地质环境影响现状评估和预测评估.根据评估结果,将评估区划分为重点、次重...  相似文献   

8.
文章根据黑龙江省矿山地质环境调查资料,确定出影响矿山地质环境的因素,采用“袭扰系数法”对全省矿山地质环境进行定量化评价。划分矿山环境严重破坏区;中等破坏区;轻微破坏区和末破坏区。该评价结果为政府有关部门进行矿山地质环境保护和治理提供了科学依据。  相似文献   

9.
基于RS和GIS的广西矿山地质环境综合评价   总被引:1,自引:1,他引:0       下载免费PDF全文
以广西陆域作为研究区,利用遥感技术开展矿山地质环境遥感调查与监测工作,获取矿产资源开发状况、矿业活动占地情况、矿山地质灾害、矿山环境污染、矿山生态环境恢复治理情况等客观数据,综合自然地理、基础地质等相关资料,选择14个评价因子,采用网格法进行矿山地质环境综合评价,划分矿山地质环境严重影响区、较严重影响区、一般影响区、无影响区,为政府部门整治矿山地质环境、制定相关政策法规等提供技术支撑及决策依据。  相似文献   

10.
基于GIS的陕西省矿山地质环境综合分区研究   总被引:2,自引:0,他引:2  
陕西省矿山环境地质问题严重,其影响因素可分为矿山开发对地质环境的影响程度、地质环境背景及区位条件、矿产资源开发利用规划、矿山生态环境恢复治理难易程度等四大类.本文在MAPGIS平台上,采用正方形网格单元划分,选择综合指数模型为评价模型,将各影响因素处理成基于GIS的单因素专题图层,再将各专题图层按权重进行空间代数叠加,利用叠加结果进行矿山地质环境综合评估分区,将陕西省矿山地质环境按综合评估指数的大小分为三级区,其中严重区22个,面积8 384.09 km2;较严重区40个,面积约20 194.7 km2;一般区1个,面积177 221.21 km2.  相似文献   

11.
Karen Bakker 《Geoforum》2007,38(5):855-868
Private sector partnerships (PSPs) have been increasingly advocated as an instrument of ‘pro-poor’ water supply policies. This article examines the performance of the private sector with respect to network connections for poor households in Jakarta, Indonesia, drawing on three sources: data collected through a household survey of poor households in six Jakarta neighbourhoods in 2005; data provided by the two private concessionaires and the Jakarta municipal government; and interviews with water supply managers, government officials, and NGO representatives in 2001 and 2005. The analysis concludes that the Jakarta PSP contract has not been pro-poor: new connections were preferentially targeted at middle and upper-income households over the period 1998-2005, and the numbers of new connections have been lower than the original targets. The paper argues that the failure to connect the poor is not solely attributable to the private operators, and identifies disincentives to provide individual network connections to poor households on the part of the municipality, the private concessionaires and poor households. The paper concludes by questioning the long-term ability of private sector operators to supply water to the poor.  相似文献   

12.
The debate on housing the urban poor has become more sophisticated since Turner’s original ideas of self-help and self-building by the poor were introduced in the 1970s. Today, the emphasis in housing the poor is on a pluralistic approach that stresses enabling housing provision for the poor by expanding the range of providers to include government, the private sector, the poor themselves, non-governmental agencies, and cooperatives. Official housing policy in Ghana does not reflect the pluralistic approach that prevails in practitioner and academic circles. Using ethnography, this paper presents the housing experience of a typical poor family in Ghana to determine what the poor build. It highlights the obstacles the poor have to overcome to acquire the housing they want. The ethnography provides a basis upon which the mismatch between the pluralistic approach and Ghana’s housing policy can be bridged thus providing a way forward. The paper concludes by emphasizing the importance of the housing industry in poverty alleviation in Ghana.  相似文献   

13.
Sylvy Jaglin 《Geoforum》2008,(6):1897-1906
The central focus of this paper is on the differentiation of basic urban trading services in middle income cities and its role in service provision for the poor. Most studies dedicated to service delivery to the poor emphasize the inequalities pertaining from a growing differentiation in provision and take up some of the arguments of the splintering urbanism thesis. The paper examines some of the main claims made in this debate through a case study of Cape Town (South Africa). It illustrates how differentiation is implemented through service levels and tariffs and suggests that it is a pragmatic way of accommodating social and spatial disparities in a highly polarized city, while making progressive steps in favour of the poor. The main argument is that, in Cape Town like in many middle income cities, urban diversity restricts the relevance of conventional social policies and the scope of local solidarity with regard to service delivery. The differentiation of provision is thus a strategy to bring the diversity within the public service, and hence to preserve an institutional and financial public capacity of delivering subsidized services to the poor.  相似文献   

14.
The debate on housing the urban poor has become more sophisticated since Turner’s original ideas of self-help and self-building by the poor were introduced in the 1970s. Today, the emphasis in housing the poor is on a pluralistic approach that stresses enabling housing provision for the poor by expanding the range of providers to include government, the private sector, the poor themselves, non-governmental agencies, and cooperatives. Official housing policy in Ghana does not reflect the pluralistic approach that prevails in practitioner and academic circles. Using ethnography, this paper presents the housing experience of a typical poor family in Ghana to determine what the poor build. It highlights the obstacles the poor have to overcome to acquire the housing they want. The ethnography provides a basis upon which the mismatch between the pluralistic approach and Ghana’s housing policy can be bridged thus providing a way forward. The paper concludes by emphasizing the importance of the housing industry in poverty alleviation in Ghana.  相似文献   

15.
诸广岩体南部富铀矿成矿地球化学条件的初步探讨   总被引:7,自引:0,他引:7  
王健芳  高德统 《铀矿地质》1989,5(4):194-202
诸广岩体南部的铀矿床均属大气降水中低温热液岩源活化改造型单铀矿床。稀土元素地球化学,包体和同位素的研究表明:贫、富矿成矿的基本地球化学条件相似;贫、富矿的根本不同点表现在富矿热液是富铀“浓流体”,而贫矿热液则是“稀溶液”;影响矿化贫富的重要因素是直接供铀条件的好坏,这方面富矿明显优于贫矿;富矿有比贫矿更为稳定和有利的成矿地球化学环境。  相似文献   

16.
Farming among urban dwellers in Sub-Saharan Africa is a common phenomenon. The present study, carried out in a medium-sized town in Kenya, not only confirmed this but also showed that farming by urban dwellers in the rural areas was even more important for these households’ livelihoods than farming in town. However, those who could benefit most from farming, i.e. the urban poor, appeared to be underrepresented among urban farming households and those urban poor who did farm, either in urban or in rural areas, performed worse than the farming non-poor. The importance of farming as a livelihood source is illustrated by the fact that in years with very little or no harvest due to drought, many of the poor farming households faced food shortages.  相似文献   

17.
ZHANG Jian-bin 《岩土力学》2006,27(Z1):393-397
Both high technology and high risk are involved in construction of the subsea tunnel, especially in poor ground condition sections. Xiamen Xiang’an tunnel is the first subsea tunnel in China mainland district. The tunnel is designed as a three-tube tunnel with 6-lane shuttle and the deepest point about 70m under sea level, built by means of boring and blasting method. The stratum of site is mainly composed of granite with some poor ground conditions including completely or strongly weathered granite in land and shallow section near to both portals as well as several significant faults in seabed. It is very important to achieve risk management in poor ground condition sections during tunneling in this case. Both the principle of risk occurrence and the method of risk evaluation for the construction of subsea tunnels are discussed based on the basic theory of risk analysis and evaluation. According to the geological prospecting, structure design and planned construction method in detail design phase of Xiamen Xiang’an tunnel, both typical geological risks and representative construction risks during tunnelling in poor ground condition sections were identified and evaluated by means of the method proposed in this paper. Countermeasures for reducing the risk level were proposed in order to implement a risk management to ensure the safety and quality of tunnelling.  相似文献   

18.
The remotely sensed data provides synoptic viewing and repetitive coverage for thematic mapping of natural resources. In the present study hydrogeomorphological mapping has been carried out in Kakund watershed, Eastern Rajasthan for delineating groundwater potential zones. IRS-1D LISS III Geocoded FCC data in conjunction with Survey of India toposheet (1:50000 scale) and field inputs were used for thematic mapping. Geomorphic units identified through visual interpretation of FCC include: alluvial plain, plateau, valley fills, intermontane valleys, burried pediment, residual hills, and linear ridges. In addition, lineaments were mapped since they act as conduit for groundwater recharge. Majority of the lineaments trends NE-SW and a few along NW-SE directions and are confined to the southern and southeastern parts of the watershed. Based on hydrogeomorphological, geological and lineament mapping the Kakund watershed has qualitatively been categorized into four groundwater potential zones, viz. good to very good, moderate to good, poor to moderate and very poor to poor. The study reveals that only 10.97% of the area has good to very good, 35.41% area with moderate to good, 49.04 % of the area has poor to moderatel, while remaining 4.57% has poor to very poor groundwater potential.  相似文献   

19.
马忙利  杨波 《陕西地质》2012,30(1):78-81
黄土增湿方法有预湿法和掩埋法。预湿法增湿时间较快,增湿程度易于控制,增湿效果较好,但无法批量增湿,需单个分别处理,工作量较大。掩埋法可以批量增湿,但增湿时间过长,增湿均匀性较差。土体含水量越高,增湿试验所需时间越短。  相似文献   

20.
地震弯线技术在地形复杂地区煤田勘探中的应用   总被引:2,自引:0,他引:2  
环县地区属于典型的巨厚黄土覆盖区,山大沟深,地形复杂。激发和接收条件极差,若采用常规直测线设计,野外施工非常困难,且地震勘探效果较差。面对山区、丘陵沟壑区的复杂地震地形条件,在精确计算接收点和激发点坐标的基础上,通过试验确定了弯曲测线折线转角大小、面元大小、叠加次数等主要参数,并利用共反射面元叠加原理进行资料处理,取得了良好的地质效果。  相似文献   

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