高分辨率三极断面测探技术在采石场勘查中的应用

介绍了高分辨三极断面测深技术在采石场勘查中的应用,钻探验证结果表明,该方法能够准确圈定采石场灰岩岩溶等地质异常体,可为开采石料提供必要的地质资料。     

废弃采石场地质环境恢复治理对策探讨——以山西太原西山地区某废弃采石场为例

针对山西太原西山地区上世纪遗留下的某废弃采石场的地质环境问题,根据当地经济、气候、采石场边坡岩性等条件,采用阶梯法进行地质环境恢复治理方案设计;并从地质灾害治理、地形地貌景观恢复等方面对废弃采石场地质环境的治理提出措施与对策。     

团粒喷播技术在矿山地质环境恢复治理工程实施中的应用

伴随着生态环境问题的日益突显,矿山地质环境恢复治理工作愈发重要。本文以某采石场为例,运用团粒喷播技术,对废弃采石场进行矿山地质环境恢复治理工作。文中简单介绍了团粒喷播技术的施工原理、技术要求以及施工流程,并提出了相关恢复治理的防治措施,期待为今后废弃采石场的植被恢复及地质环境恢复治理工作提供有效参考。     

安徽省两淮矿区地质环境治理技术

由于采煤、采石活动影响,两淮矿区内分布着大面积的沉陷区、积水域和采石场遗迹地。针对两淮矿区矿山地质环境现状,提出了因地制宜、多元综合整治的地质环境治理理念,在矿区内采用沉陷区复垦、设立特色矿山公园、山地地质环境治理等技术对地质环境进行治理。探讨了矿山地质环境治理的多元治理技术模式,提出采煤沉陷区的“两大层次、三大类型、六种模式”复垦技术,因地制宜设立了淮北矿山公园及采石场遗迹的治理技术等模式。      

辉南靠山泡采石场矿山地质环境治理方案

辉南靠山泡采石场,始建于上世纪90年代,随着城镇经济社会和基础建设的迅速发展,建材需求量成倍增加,由于矿山开采量的增大,导致矿山地质环境造成严重的破坏。矿山开发不仅严重破坏了优美的林地生态环境,而且也为村民和过路行人带来生命财产安全隐患。本文以某采石场矿山地质环境提出了治理方案,为同类项目提供了借鉴经验。     

硬岩场地生态环境恢复技术探讨——以山东省东平县石灰石露天采场综合治理为例

为了消除露天采石场残山存在的崩塌、滑坡等地质灾害隐患,减轻废弃土石对大气的污染,恢复原有的生态环境,本文以东平县石灰石露天采场综合治理为例,探讨了硬岩场地矿山地质环境恢复治理的综合方法,包括针对边坡进行放坡、对采坑进行推高垫低的工程施工方法,生态恢复物种的选取和培育方法等,为其它类似采石场地质环境的综合治理提供借鉴.     

昆明世博会艺术广场后山高陡边坡整治工程

中国 1999昆明世博会艺术广场后山边坡整治工程 ,实施于一废弃采石场 ,不良地质现象十分发育。工程要求安全可靠 ,又与所在自然环境匹配相融 ,采取了清方、喷锚防护加固、截排表水及坡面整饰措施 ,取得了良好整治效果。     

温岭观夕硐古采石场工程地质条件评价

观夕硐是古人地下采石活动形成的洞室群。其历史可追溯到1500年前,属于大型地下工程。为解答观夕硐长期稳定,千年不倒的原因,研究洞区的工程地质条件。此研究既为长屿洞天地质公园大型地下古采石场遗址的保护和旅游安全积累地质资料,也可为现代大型地下工程的选址和建设提供工程类比资料。     

为有源头清水来——浚县矿山地质环境治理纪实

＂这里没有一处沉陷迹象!＂ ＂治理最大的成效是保护了居民饮用水安全!＂ 2009年12月底,在浚县大伾山风景区废弃采石场矿山地质环境治理项目区的评审验收现场,河南省国土资源厅有关领导和专家经实地检测后,对治理项目质量和效果给予了较高评价。     

岩口滑坡的发育特征及运动过程研究

首选运用传统的地质分析法对滑坡发育特征进行研究,分析了岩口滑坡形成机制;然后 格郎日差分法和离散单元法相结合,对滑坡发生的运动过程进行全程再现模拟,认为滑坡形成的主要因素是采石场的人工开挖,暴雨是滑坡发生的触发因素。     

皖东某建设工程地质灾害危险性分析

位于皖东某地的一项建设工程,是当地集中用地面积最大的建设项目之一,由于建设场地原为一处废弃的采石场,地跨低山丘陵和山前坡岗地,地形高差大,断层较发育,地质条件比较复杂,人类工程活动比较强烈,存在较大的地质灾害隐患。作者根据建设场地所处的地形、地质条件和人类工程活动,认为现有的人工岩质边坡基本处于不稳定状态,在断层交汇处附近地下很可能存在岩溶洞穴,分析了建设工程可能引发或遭受的地质灾害主要是崩塌、滑坡、岩溶塌陷、回填土不均匀沉陷和断裂活动的影响等类型,建议建设单位采取有效措施加以防范。     

The Ensenada and Buenos Aires formations (Pleistocene) in a quarry near La Plata,Argentina

An interdisciplinary study of a section in a quarry near La Plata sheds new light on the geologic, climatic, and biologic evolution of the northeastern Pampean area of Argentina. The stratigraphic succession is composed of seven mainly eolian levels, each one including a soil and separated by a disconformity. Two geosols defined in northern Buenos Aires Province (Hisisa and El Tala) are identified in the Ensenada Formation. The boundary between the Ensenada and Buenos Aires formations is defined by a conspicuous disconformity which overlies the El Tala Geosol. In the section, the boundary between the Tolypeutes pampaeus (Ensenadan) and Megatherium americanum (lower Lujanian) biozones coincides with that of Ensenada and Buenos Aires formations. The boundary between the Matuyama and Brunhes zones of polarity occurs in the upper part of the Ensenada Formation above the Hisisa Geosol. According to geologic evidence, most of the succession was deposited under semiarid to arid climate.     

甘南某金矿地球物理探测与冒顶事故分析

甘南某金矿3号矿体采用空场法开采,于2006年12月4日采场发生冒顶坍塌,造成矿山停产。为了恢复矿山生产和今后矿山生产安全,需要进行采场坍塌原因分析,了解采场塌埋填实情况,以便采取相应安全措施,保证采矿安全。为此,首先根据3号矿体的地质、采矿条件,分析了采场坍塌原因及其主要影响因素。在此基础上,采用地球物理勘探技术,进行了采场空区的电磁法探测,由此揭示了采场的空区填埋情况。同时,圈定了深部矿床的异常区,不仅为矿区恢复生产提供了重要设计依据,而且为矿山深部资源开发提供了重要的参考价值。     

Middle Pleistocene ice‐marginal sedimentation at a constrained ice‐sheet margin,East Anglia,UK

This paper presents a reconstruction of the marginal zone of the Anglian (Elsterian, 480–420 ka BP) age ice sheet in the Danbury‐Tiptree area, East Anglia, UK. The research area is a unique locality where the ice front abutted against a 30‐km‐long and 100‐m‐tall ridge in an otherwise lowland area. Observations from three main field localities (Danbury quarry, Royal Oak pit and Tiptree quarry) are complemented with ground penetrating radar survey data, borehole data analysis, laboratory analyses and geological map interpretation. A four‐stage model of the evolution of the landscape in the Danbury‐Tiptree area is presented. The results are of broader importance, in that the sedimentary record sheds light on the processes operating at a constrained ice‐sheet margin. The paper identifies the most important characteristics of the depositional environments at an ice front terminating within this type of setting: (i) high temporal and spatial variability of energetic depositional conditions, resulting in the presence of a vast array of distinct depositional sub‐environments; (ii) mechanisms promoting differential erosion leading to enhanced topography, and (iii) unusually high overburden pressure in the topographically constrained ice margin within the otherwise lowland area influencing the ice‐sheet–bedrock interaction in this particular research area, inducing postglacial seismicity.     

江苏溧阳上黄高级灵长类及哺乳动物化石的发现

在中国江苏省溧市上黄水母山发掘出距今４５００万年的哺乳动物化石群，共鉴定出１２个目３６科３８属６０余种动物，种类之多在世界上罕见。尤其是中华曙猿化石的发现意义最大，这是迄今为止在地球上所发现的最古老的、包括人类在内的、一切高级灵长类动物的始祖化石，被世界考古界认为是本世纪具有划时代意义的重大发现，具有特别重要的科学价值，其意义可与周口店北京人的发现媲美。这一具有重大科学价值的史前高级灵长类及哺乳动     

Electrical and electromagnetic surveys to locate possible causes of water seepage to ground surface at a quarry open pit near Helwan city,Egypt

Water seepage to ground surface at a limestone quarry located at Wadi Garawy about 20 km south-east of Helwan city in Egypt posed a real threat to the mining activity at the quarry. The quarry area is known to be very dry for decades and away from water utilities and infrastructures that may cause water leaks to the quarry. Geophysical investigation including 1D Vertical Electrical Sounding (VES), 2D Electrical Resistivity Tomography (ERT) and 1D Transient Electromagnetic (TEM) surveys were conducted to characterize the rock sequence and locate what could be a possible source of water seepage to the quarry. The resistivity profiles generated from the VES and TEM surveys mapped the rock units in the area down to depths exceeded 100 m. The ERT profiles acquired from the quarrying zone close to the water seepage spot have imaged the top of groundwater level at few meters below the ground surface at the quarry open pit. The spot of groundwater seepage seemed to occur at an area of limestone dissolution that were filled by finer sediments. The finer sediments acted as a hydrological conduit that allowed an upward seepage of groundwater to ground surface under the capillary action effect.     

上海佘山风景区废弃采石坑环境治理对策

上海佘山风景区是国家旅游度假区,也是上海唯一的基岩集中出露区。其间有七家采石厂以下挖 式进行石材开采,遗留采石坑占地近14×10~4m~2。采石坑存在重大安全隐患,并对环境景观造成严 重影响。本文结合度假区总体建设规划,提出采石坑环境治理对策,并论述其可行性。采用注水 是综合效应良好的可行方案。     

Small scale study of groundwater flow in a fractured carbonate-rock aquifer at the St-Eustache quarry, Québec, Canada

A small-scale hydrogeological study was conducted in a fractured carbonate-rock aquifer located in a quarry to relate groundwater flow to the fracture network. The field study in the St-Eustache quarry, which integrates structural surveys, well logging and hydraulic tests, showed that the most important features that affect groundwater flow in the sedimentary aquifer are high hydraulic conductivity horizontal bedding planes. Vertical fractures are abundant in the quarry and throughout the region, but they have a minor effect on groundwater flow. To have a significant impact on the flow regime and lead to vertical groundwater flow, the permeability of all vertical joints need to be enhanced compared to what was generally observed at the site. Such an increase in permeability could potentially occur where dissolution and fracturing is more intense or at stress release locations such as near the surface in the quarry.     

Pollution of limestone aquifer due to urban waste disposal around Raipur,Madhya Pradesh,India

During the rainy season deterioration in the quality of water, supplied through dug wells and tube wells, near an abandoned limestone quarry was reported. The abandoned quarry is now being used as an urban waste disposal site. The problem was further complicated by hospitalization of several inhabitants who were using this water for domestic purposes. Looking into the consequences, chemical analysis of water from the quarry, dug wells and tube wells was carried out. The water was found to be contaminated. The transportation of pollutants from the quarry to the groundwater system was facilitated by karst features. Furthermore, four major sources—domestic waste disposal, water conservation structures, landfills, and water wells—contributing to pollution were identified. This case study is an attempt to provide an understanding of how the karst features facilitate groundwater contamination. It will help us answer a few questions such as why karst hydrogeology deserves special attention in urban expansion and what protective measures should be planned in view of rapid urbanization.