Abstract

Design scheme optimization of dike regulation project for main stream of Nianchuhe river

WANG Jian-zhong,LIU Guo-yin,LI Can

Comprehensive regulation and project practice of urban rivers

QU Lei

Dynamic prediction of groundwater buried depth by using model

SUN Xiao-lei

Study on evolution laws of hydrologic regime in Tieling section of Liaohe river

LI Jing-ku,LIANG Feng-li

Test study on river models with moveable bed material for Nenjiang Bridge

ZHANG Zheng-bo

Evaluation of water ecological health of Hunhe river by using diatom index

TIAN Ying

Detection of underwater shallow layer sedimentation by using parametric array sonar technique

LI Si-chen,HUANG Wei,CUI Shuang-li

Design of concrete gravity dam for Shilong hydropower station

TAN Zhi-jun,ZHENG Jun,FU Di

[Abstract]The paper introduces the general layout design of concrete gravity dam for Shilong hydropower station.The diversion-type powerhouse is adopted,the overflow dam is located in main river bed and the retaining dam is located in two banks.In time considering the construction condition,the river valley space is used efficiently to make the layout coordinate and compact，The high-low bucket is adopted for the flip bucket of overflow dam and the flaring gate pier is adopted for the rightmost abutment pier of overflow dam,which could effectively solve the problems of the energy dissipation and erosion prevention and the scouring problem at the right mountain bank.The general layout is rational and the operation management is convenient.

gravity dam;general layout design;Shilong hydropower station

Design scheme optimization of dike regulation project for main stream of Nianchuhe river

WANG Jian-zhong,LIU Guo-yin,LI Can

[Abstract]At present,the embankment at the left dike of Nianchuhe river are almost the dry stone structure,the stability of slope is poor,which is difficult to play an effective protective role.Through the optimization of slope protection and foot protection and the selection of bend engineering measures,the paper determines the design scheme of the flood control dike regulation project at the left bank in the main stream of Nianchuhe river,with the gabion dry stone slope protection and the steel reinforcement cage foot protection and the spur dike bend protection.

[Key words]dike regulation project;design scheme;main stream of Nianchuhe river

Comprehensive regulation and project practice of urban rivers

QU Lei

[Abstract]The goal of the traditional regulation mode of the urban rivers is single and it only meets the demand of city flood control and project safety.Taking the comprehensive regulation project of Yunihe river in Dashiqiao City of Liaoning Province as an example,the new regulation mode of urban rivers is put forward,which the goal of flood control of urban rivers should be combining with the overall planning of urban development and considering the demand of the construction of urban river landscape,the construction of city ecological civilization and the construction of urban water environment.The new mode could maintain the healthy development of the urban rivers,create the ecological river with human-water harmony and meet the needs of modern urban river regulation.

[Key words]urban rivers;ecological regulation;project practice

Dynamic prediction of groundwater buried depth by using model

SUN Xiao-lei

[Abstract]According to the groundwater buried depth time series coming from the information recordation,the DAMSM model is established and the prediction equation is obtained by using the bi-directional difference and self-memorization principle.For the prediction results,the maximum relative error is only 8.07%,the average relative error is about 4.33%,the fitting is good,which could be used to control and manage the groundwater depth dynamic monitoring.Through the history data is used in the model calculation,the model could fill the defects causing by the single prediction.At last,the alleviation and restoration scheme of groundwater ecological environment are put forward based on the geology and groundwater characteristics of Shoushan funnel area.

[Key words]DAMSM model;Shoushan funnel area;groundwater buried depth;dynamic prediction

Study on evolution laws of hydrologic regime in Tieling section of Liaohe river

LI Jing-ku,LIANG Feng-li

[Abstract]Combining the ecological hydrology theory of the river,the paper studies the evolution laws of hydrologic regime in Tieling section of Liaohe river by using the IHA/RVA method,and analyzes the variation of hydrologic regime before and after the construction of Qinghe reservoir and Chaihe reservoir.The results show that the variation of hydrologic regime in Tieling section of Liaohe river is significant along with the strengthening of human activities.Most of the month discharge show the decrease tendency except for months,the annual maximum discharge shows decrease tendency with the time advance,the annual minimum discharge shows decrease tendency with the time delay.Keeping time,the increase and decrease rate and the change times of the high and low flow are all decrease with the smooth runoff process.In the 33 indexes of IHA before and after construction of Qinghe reservoir and Chaihe reservoir,2 indicators are high change,16 indicators are moderate change and 15 indicators are low change,overall change degree are 45.3%,which is belong to the moderate change.

[Key words]Liaohe river;hydrologic regime;evolution law

Test study on river models with moveable bed material for Nenjiang Bridge

ZHANG Zheng-bo

[Abstract]The Nenjiang bridge is the main line of the Qiqihar City to Gannan County section of Suifenhe City to Manzhouli City highway.The bridge site is located in the branching river,the most are three branches or four branches.In order to compare and select the schemes of bridge hole layout and the new dredged river location and judge the river channel stability and the river regime change at the bridge site after the bridge construction, the river models with moveable bed material is need to simulate.Through the test study,the scheme 2 is selected as the recommended bridge location scheme.In the bridge site,the channel maintains stability basically and the river bed and both sides of the bank of the new dredged river should be protected to control the development of the branching river and maintain the stability of the main river.In addition,the right side of the Mingyue island should be protected to prevent the flow erosion of the new dredged river.

[Key words]river models with moveable bed material;model test;river evolution

Evaluation of water ecological health of Hunhe river by using diatom index

TIAN Ying

[Abstract]Taking the Hunhe river basin as an example,according to the lots of the indicators of the biological diatom DES,biological diatom,diatom,diatom eutrophication and specific pollution sensitivity in the basin,these suitable diatom indicators are selected to evaluate the water ecological health of Hunhe River Basin.The evaluation results are that,the Pearson correlation analysis shows the correlation between the water environment factor and IDP index,DES index,IDAP index,CEE index and IDG index is high,the factor analysis shows the environmental factors with loading contribute more than 50%of the factor are preserved,including the ammonia nitrogen, conductivity,total dissolved solids,hardness,permanganate index,total nitrogen,active phosphorus and flow rate. At last,the results of box diagram show that the indexes of IDP,DES,CEE and IDG could better evaluate the water health situation of Hunhe river.

[Key words]diatom index;environment factor;water ecology health;Hunhe river

Detection of underwater shallow layer sedimentation by using parametric array sonar technique

LI Si-chen,HUANG Wei,CUI Shuang-li

[Abstract]The paper introduces the work principle,the technique characteristics,the signal collection and treatment method of the new type parametric array nonlinear frequency modulation sonar detection system.Through the application example of sedimentation determination in some a reservoir,the application effect is evaluated.

[Key words]parametric array;sonar determination;reservoir sedimentation