A RISK-BASED APPROACH FOR FLOOD CONTROL OPERATION OF A MULTIPURPOSE RESERVOIR1

ABSTRACT: Many approaches are available for operation of a multipurpose reservoir during flood season; one of them is allocation of storage space for flood control. A methodology to determine a reservoir operation policy based on explicit risk consideration is presented. The objective of the formulation is to maximize the reservoir storage at the end of a flood season while ensuring that the risk of an overflow is within acceptable limits. The Dynamic Programming technique has been used to solve the problem. This approach has been applied to develop operation policies for an existing reservoir. The performance of the policy was evaluated through simulation and was found to be satisfactory.     

对某煤矿29年防尘投入的成本效益分析报告

从卫生经济学角度出发,对山东某煤矿就尘肺病所造成经济损失进行了调查分析,采用类回顾性群组对比法,分析、评价了29年来(1962—1990年)该矿采取防尘措施所取得的经济效益,为进一步开展预防尘肺病的卫生经济学研究提供科学依据。     

大巴山区化学药剂防治与农业生态环境保护对策

本文对大巴山区农业生产中用化学药剂防治状况及存在的主要问题进行了分析研究。在此基础上，提出开展农药区划和区域性宏观调控，建立农药污染监测管理机制，进一步提高综合防治技术水平和专业化防治程度，加强防止污染微观技术的研究与推广控制策略和措施，以实现对化学药剂防治与农业生态环境保护。把农业环境保护工作纳入农业发展和国家农业环境保护的总体规划。     

我国矿井环境模拟和控制技术的研究进展

计算机技术的迅速发展,极大地推动了矿井动态通风系统定量分析的研究。本文介绍了我国近年来在矿井火灾时期井下状态模拟和最优控制方面应用新技术获得的进展,并对各种定性及定量分析方法进行比较和评价。文中对建立矿井火灾时期救灾决策系统的研究方向提出了建议,以便能尽快的为矿井灾变时期的救灾指挥决策的实际应用服务。     

安全科学管理与人为失效研究——分析铁路运输中的人为失效规律

本文论述了安全科学中的人为失效理论与实践问題,即理论上研究了作为一门独立的人为安全学的基本范畴及框架,实践上分析了北京铁路分局某站近30年的事故情况,还探讨了减少人为事故对铁路安全运输的意义、作用及实施对策。     

TECHNICAL AND INSTITUTIONAL ASPECTS OF SEWAGE EFFLUENT-IRRIGATION WATER EXCHANGE,TUCSON REGION1

ABSTRACT .Many growing municipalities near irrigated agriculture are advocating a transfer of water now utilized for irrigation to municipal use. Alternatives are presented whereby this water can be transferred to municipal use in exchange for treated sewage effluent. The irrigation water would in effect be cycled through the municipal system prior to use on the farms. A case study of the Tucson region illustrates the relevant legal, economic and technical aspects. Effluent could be delivered to irrigators in Avra Valley at a cost less than that now paid for water pumped from declining water tables. In return the City of Tucson could import ground water now being used for irrigation through an existing pipeline which presently cannot be used because of a court injunction obtained by the irrigators. It appears that such an exchange agreement could be made without modification of existing statutory law. Similar exchange arrangements may prove to be feasible in other regions containing irrigated agriculture. Increased efficiency of water use can be achieved avoiding external effects which commonly arise in a direct transfer and are difficult to evaluate. High quality water is allocated to municipal use whereas nutrient-rich sewage effluent is transferred to irrigation.     

THE OPTIMAL TIME TO START THE OPERATION OF A DESALTING PLANT IN ISRAEL1

The study contains the methodology of finding the optimal time to start the operation of a desalting plant or any other non conventional source of water for agricultural use in Israel. The essence of the methodology is the moving equilibrium price and quantity of agricultural products. The market of agricultural products is represented by a single demand curve and a supply curve which is derived from the agricultural sector production function. Both the demand for and the supply of agricultural products functions are shifting over time. The marginal value product of water is the critical value that determines the optimal time of a desalting plant. The study is static in the sense that dynamic aspects per se are not dealt with-e.g. learning by doing of building and operating desalting plants. The empirical results although used for illustrative purposes can be used as reference points for other detailed and more ‘exact’ studies on water desalination.     

煤矿综采放顶煤工作面高浓度粉尘的综合防治

煤矿综采放顶煤工作面开采强度大、产尘尘源多、粉尘浓度高,因而对尘毒的治理难度大。为此,提出了治理的总体思路、防治方案并在几十个煤矿综采放顶煤工作面推广,取得了很好的效果。     

废水污染物排放总量控制指标的确定及控制对策

着重论述了株洲化工集团有限责任公司废水污染物排放总量控制指标的确定方法,并简述了排放总量控制对策。     

粗铜酞菁颜料生产中的三废治理

粗铜酞菁生产尾气中的氨可用硫酸吸收制硫酸铵,粉尘可用捕集器回收,废水采用物化与生化相结合的治理工艺,效果好,投资少,运行费用低,并可回收铜。