生活垃圾填埋场建设项目环保验收调查方法研究简

垃圾填埋场建设项目的主要环境问题包括：渗沥液排放、地下水环境污染、大气环境污染、噪声污染、景观变化和环境安全。根据工作经验,建立了包括建设项目基本情况、生态环境影响、社会环境影响、生态环境保护措施四大类调查监测指标为核心的环保验收调查指标体系,提出了文件资料核实、现场勘查、遥感调查、公众意见调查、环境监测和摄影法为主的建设项目竣工环保验收调查技术方法。     

某种同位素发生器用于示踪测井项目的辐射水平调查与评价研究

将某种同位素发生器用于示踪测井的贮存、运输、淋洗及现场测井各阶段,通过开展不同阶段放射性水平调查,对调查结果进行剂量估算与现状评价,掌握113Sn-113mIn同位素发生器用于示踪测井过程对环境及人员造成的辐射危害.     

黔南州2002年土地利用变更情况分析

根据2002年土地调查结果，作者对黔南州本年度各类土地增减变更情况进行了统计分析，重点探讨了新地减少的原因以及耕地增加来源和建设用地变更情况。     

新疆城市集中饮用水源地水质状况调查评价

随着经济社会的发展和人民生活水平的提高,人们对饮用水水质要求也日益关注,但目前城市饮水中普遍存在着水源不足、水污染、安全保障措施薄弱、应急能力低等诸多问题,加强城市饮用水水源地环境保护已经刻不容缓.对饮用水水源地水质状况调查评价为进一步查清我区城市水源地的水质现状、水源保护区内存在的环境问题以及污染源现状,科学制定饮用水水源地保护和管理对策和保障措施提供依据,并为后续饮用水源地环境保护规划工作奠定基础.     

邛海水质变化趋势及保护对策研究

本文通过对邛海流域现状污染源进行调查,邛海流域COD、氨氮、总氮和总磷产生量分别为5892.1t/a、995.6t/a、2888.2t/a和1105.1t/a,污染负荷主要来自面源污染.通过2002 ～ 2011年邛海水质监测数据分析,邛海水质近10年总体保持Ⅱ～Ⅲ类,处于中营养状态,2004～ 2006年水质相对较差,2006年以后水质逐渐好转.总磷、总氮是邛海主要污染因子,海河口是邛海污染最严重的区域.为实现邛海水质和流域生态环境持续改善,从产业结构优化、流域污染源治理、生态保育和流域生态环境综合监管等方面提出对策建议.     

油气田工程职业病危害控制效果评价常见问题与对策

根据建设项目职业病危害控制效果评价技术导则要求,通过对油气田地面工程职业病危害控制效果评价及职业病防护设施竣工验收的实践经验,归纳评价过程中现场调查及检测常见的实际问题及难点,总结经验,探讨解决对策,使油气田建设项目职业病危害控制效果评价更加科学、公正、客观、真实。     

肿瘤病房医用直线加速器对周围环境电离辐射的调查分析

通过对医院肿瘤病房医用直线加速器机房周围环境的电离辐射监测调查 ,并计算分析各相关人群的年有效剂量当量 ,结果低于《辐射防护规定》(GB870 3- 88)中的标准限值。表明医用直线加速器机房的辐射防护设施设计是安全合理的 ,具有重要的现实意义 ,该辐射防护设施具有推广价值。     

ERT技术在无机酸污染场地调查中的应用

利用高密度电阻率法对硫酸废液污染的场地进行污染调查,由于硫酸废液侵入土壤,使其介质的溶质浓度发生了改变,导致SO₄2-与地表潜水作用,电传导性提高,被污染土壤含盐量增加,但是电阻率降低与未被硫酸废液侵入的土层形成了一定的电性差异. 通过二维和三维电阻率层析成像(ERT)技术,圈定硫酸废液侵入土壤中的分布范围、侵蚀深度以及扩散羽流等,并对ERT结果进行土工试验异常验证. 结果表明:硫酸废液污染土壤的视电阻率小于6.0 Ω·m,污染区域长度达25.0 m,深度约4.0 m;地表土污染长度为12.0 m,表面宽度约4.0 m,污染土壤的总体积约为222.0 m3.      

乌鲁木齐市生态环境现状调查

乌鲁木齐市深居亚欧大陆腹地,远离海洋,气候干旱,降水稀少,植被稀疏,风沙危害严重,生态极期脆弱,属典型的温带半干旱绿洲生态环境。对乌鲁木齐市“八五”及“九五”期间的生态环境状况进行了多方面的调查分析。并就存在的问题谈了作者的观点,以供同行参考。     

Why are powered two wheeler riders still fatally injured in road junction crashes? – A causation analysis

Introduction: Powered Two Wheeler (PTW) crashes continue to be a road safety concern with a plateauing of the number of associated fatalities. Method: Forty one UK fatal or serious injury crashes involving a PTW and another vehicle at a junction were examined. Crash causation was analysed using the Driver Reliability and Error Analysis Method (DREAMv3.2). Crashes were split into two groups: Group A, where the other vehicle was travelling in the opposite direction to the PTW and commenced a right turn across the PTW’s path; and Group B where the other vehicle turned right out of a side road (or entrance) across the PTW’s path. Results: Overall, the factor that led directly to the crash (phenotype) was most commonly ‘too high speed’ or ‘too late action’ for the motorcyclist and ‘too early action’ for the other driver. Missed or late observations were contributory factors for both PTW riders and other vehicle drivers. Some differences between groups were observed with the PTW riders in Group B more likely to have ‘insufficient skills’ and the other vehicle drivers in Group A more likely to have ‘attention allocation’ as a causation factor. For both groups the crashes occurred because the other vehicle failed to give way to the PTW with causation chains that suggest ‘looked but failed to see’ is still an issue in this type of crash. The excessive speed of the PTW contributed to some crashes. Conclusions: This analysis suggests that drivers failing to give way to PTW riders at junctions is still a problem. This may relate to the ‘looked but did not see’ phenomenon. Causation differences were observed between the examined groups. Practical considerations: The DREAM methodology is an effective tool in analysing crash data from police collision investigation reports. Different countermeasures may be necessary to prevent different types of junction crashes.