通过垃圾填埋场调节池渗滤液泄漏情景的设定,确定氨氮、COD为污染物的评价因子,基于Visio Mod FLOW软件中的Mod FLOW和MT3DMS模型对模拟区的地下水流场和污染物时空分布加以模拟,给出污染物的运移路径、影响范围、影响时间及污染物浓度...通过垃圾填埋场调节池渗滤液泄漏情景的设定,确定氨氮、COD为污染物的评价因子,基于Visio Mod FLOW软件中的Mod FLOW和MT3DMS模型对模拟区的地下水流场和污染物时空分布加以模拟,给出污染物的运移路径、影响范围、影响时间及污染物浓度分布情况,并布置模拟监测点,给出监测点的污染物浓度实时变化情况。展开更多
为有效进行水库地下渗流预测,本文以某水库为例,通过对坝址区地质、水文等基本条件的了解,提出基于Visual Mod flow模拟的水库地下渗流预测方案。考虑天然、蓄水及防渗帷幕多种坝址区地下水工况,利用地下水渗流模型进行模拟分析,预测坝...为有效进行水库地下渗流预测,本文以某水库为例,通过对坝址区地质、水文等基本条件的了解,提出基于Visual Mod flow模拟的水库地下渗流预测方案。考虑天然、蓄水及防渗帷幕多种坝址区地下水工况,利用地下水渗流模型进行模拟分析,预测坝址区渗漏量,根据水库渗漏情况采取防渗措施,使水库安全、稳定运行。研究认为,蓄水水位1850 m较为合适,成库条件良好,水库维持此水位运行时具有较高的经济效益和生态效益。本研究对水库地下渗流预测提供参考,采用科学的方法保证水库地下渗流预测结果的可靠性,结合完善的防渗措施,提高水库建设水平和运行水平。展开更多
Parking-toll on main-line is one of toll models on high-level ways in our country at present. This paper analyzes the flow's distributing function, queuing model, and vehicle passing time. Through computer simulat...Parking-toll on main-line is one of toll models on high-level ways in our country at present. This paper analyzes the flow's distributing function, queuing model, and vehicle passing time. Through computer simulation, the negative index relationships between carrying capacity and serving time, and the index relationships between the queuing delay and flow are gained under the condition of different serving time and different vehicle type composition. When the flow density is low, the vehicle type composing has less influence on system serving level. Contrarily, also. Disposing toll station by roadway where flow density is high, we can save transection areas of toll station, reduce system queuing delay time, and enhance carrying capacity of toll station.展开更多
文摘通过垃圾填埋场调节池渗滤液泄漏情景的设定,确定氨氮、COD为污染物的评价因子,基于Visio Mod FLOW软件中的Mod FLOW和MT3DMS模型对模拟区的地下水流场和污染物时空分布加以模拟,给出污染物的运移路径、影响范围、影响时间及污染物浓度分布情况,并布置模拟监测点,给出监测点的污染物浓度实时变化情况。
文摘为有效进行水库地下渗流预测,本文以某水库为例,通过对坝址区地质、水文等基本条件的了解,提出基于Visual Mod flow模拟的水库地下渗流预测方案。考虑天然、蓄水及防渗帷幕多种坝址区地下水工况,利用地下水渗流模型进行模拟分析,预测坝址区渗漏量,根据水库渗漏情况采取防渗措施,使水库安全、稳定运行。研究认为,蓄水水位1850 m较为合适,成库条件良好,水库维持此水位运行时具有较高的经济效益和生态效益。本研究对水库地下渗流预测提供参考,采用科学的方法保证水库地下渗流预测结果的可靠性,结合完善的防渗措施,提高水库建设水平和运行水平。
文摘Parking-toll on main-line is one of toll models on high-level ways in our country at present. This paper analyzes the flow's distributing function, queuing model, and vehicle passing time. Through computer simulation, the negative index relationships between carrying capacity and serving time, and the index relationships between the queuing delay and flow are gained under the condition of different serving time and different vehicle type composition. When the flow density is low, the vehicle type composing has less influence on system serving level. Contrarily, also. Disposing toll station by roadway where flow density is high, we can save transection areas of toll station, reduce system queuing delay time, and enhance carrying capacity of toll station.
