作为煤炭资源枯竭型城市,为更好地发挥人才推动转型振兴高质量发展的积极作用,黑龙江省七台河市通过完善揽才政策、搭建引才平台、建强育才基地、优化留才服务,多措并举、环环相扣跑出人才工作加速度.

Heifangtai is a kind of typical loess terrace in loess area of northwest China,where loess is sensitive to water and is of nature of hydro-collapse. Due to flood irrigation for more than 30 years,a severe land subsidence has occurred in the area on its ground. However,little has learned about how long and how much the land subsidence is going to be. Based on monitoring data during the period between 2007 and 2011 obtained using InSAR,trend of the land subsidence in the area was analyzed in this paper followed by estimation of the residual subsidence. It was found that the land in the area is still subsiding,whereas amount of subsidence varied in different sections. There have been 12 subsiding sections,among which the greatest subsidence had been recorded up to 120. 4mm in the monitoring period. However,about 77% of the entire area was subsiding with an annual rate less than 10mm,suggesting subsidence in the area has been very slow. Regarding that hydro-collapse of the loess in the area becomes much weaker when it experiences more cycles of wetting and drying,it is believed that both rate and amount of the land subsidence will be much lesser. It is estimated that residual hydro-collapse of the loess in the area will be not greater than 0. 687m,which is less than 3% of total amount of hydro-collapse of the loess could be.

By analyzing the technique features and functions of WebGIS, combined with the landslide disaster characteristics of Lanzhou city, taken MapGIS K9-IMS as map release platform, the landslide disaster information publishing based on WebGIS of Lanzhou city is built. This paper has introduced the overall structure of the system and its functional characteristics, as well as analyzed the key technologies and methods to conduct the system briefly. The system adopts B/S frameworks of three layers, designs and conducts each of the functional modules based on the thoughts of modularization and routing. It includes three modules: rainfall management, warning analysis, warning management, with the warning analysis module as its core. Doing the secondary development based on the MapGIS K9-IMS platform, it can realize these functions: storage and management, query and retrieval, warning and analysis, Web publishing, decision-making of landslide disaster information, etc., which can provide decision support for local disaster prevention and mitigation.

Landslide hazard is the most serious type of geological hazards in Lanzhou city.It has the characteristics of large quantity and scale,abruptness,short duration and damaging.in the authors use the support of MapGIS and design and develop the landslide hazard meteorological early-warning system for the disaster prevention and mitigation service in Lanzhou city.On the basis of the collected information,internal and external factors which lead to landslide are quantified in GIS,the authors get the relatively stationary landslide hazard potential risk assessment figure of Lanzhou city.By analyzing the relationship between rainfall and landslide hazard,the authors get the rainfall threshold expression.The system provides four rainfall models and two early-warning models,which achieves the diversification of models.Rainfall is quantified by four rainfall models.Potential probability value of landslide hazard in Lanzhou city is coupled with rainfall probability value,which is based on two early-warning models.Each model of early-warning system provides three,four and five limits of threshold for the final mapping selection.Through MapGIS k9 IMS secondary development platform,the system realizes Web publishing of real-time information of landslide hazards.The system realizes the automatic process from data acquisition to analysis and calculation,finally site released,which provides the basis for decision-making of disaster prevention and mitigation of Lanzhou city.

滑坡是兰州市区最严重的地质灾害类型之一,建立适当的滑坡灾害气象预警分析模型对预警的精度至关重要。滑坡灾害是一个开放的、复杂的灾害系统,需要对地质环境因素和降雨因素综合考虑。通过对多种预警模型的介绍,并根据各个模型的特点及兰州市的地质环境条件,共采用了两种预警模型（方法）。在GIS技术的支持下,将降雨量模型概率值和滑坡灾害危险性概率值进行耦合,实现了滑坡灾害的实时预警。为满足业务的需求及实现不同地质灾害气象预报等级的分级,两个预警模型都提供了3类、4类和5类界限阈值,供最终成图选用。

Based on the history of water resources development and utilization in the Shiyanghe River Basin,combined with the urbanization process,we conclude that the agricultural water source of Wuwei city come from surface water in the reservoirs before Qilian Mountains,the tune of water of the Jingtai phase-two-extension project in the Yellow River and some local exploitation of groundwater;industrial and domestic water all come from groundwater,that water supplying and the natural supply of water source has been a serious imbalance.To the division for city groundwater protection area,we think that it is unreasonable and unscientific to divide modern groundwater protection areas according to the traditional groundwater influence radius in groundwater mining.Based on the analysis of the hydro-geological conditions of water source site,groundwater recharge,runoff and drainage,we should take the river basin delineation of upstream as a big protection area,so as to solve the permanent security problems of city water supply.In addition,in water diversion project according to the "Important management and planning in Shiyanghe River basin of Gansu Province",we considered to be more scientific,reasonable approach is that based on the analysis of the groundwater hydro-geological conditions of the Shiyanghe River Basin,following the groundwater recharge,runoff,drainage channels which were formed during the Article IV geological historical period,concentrated into the implementation irrigation area and reducing the exploitation of groundwater in the whole basin at the same time,we should partially or entirely take use of the tune of water of the Jingtai phase-two-extension project in the Yellow River and surface water in the reservoirs before Qilian Mountains from the upper Shiyang River basin——Wuwei upstream region by irrigation or other means to infiltrate and recharge the groundwater system,enter,so as to arrive eventually into the six downstream rivers,to stop groundwater level falling,and to recovery sustainably the Minqin Basin groundwater level,instead of directly transferring water source into the Minqin basin.

For the Yellow River Three Gorges,it refers to the upper reaches of Yongjing County in Gansu Province within the Liujiaxia,Yanguoxia and eight Gorge,which resettlement 986,5527 persons in the immigrant districts of Yanguoxia,mainly in the town of Yongjing County under the jurisdiction of Yanguoxia dark side of HeiFangTai plateau and down more than 10 villages.The Yellow River Three Gorges Geological Disaster mainly for large-scale mass of landslide disasters,mainly in HeiFangTai plateau slope of Black Belt.HeiFangTai Plateau area of about 13.7km2,The plateau above the surrounding terrain on the ground is about 100 ~ 133m,since 1968,for irrigation,has accumulated over 100 landslide disasters,which have caused 40 deaths and direct economic losses of about 200 million RMB in indirect economic losses of 500 million RMB.TABLELAND-induced long-term flood irrigation is the mass in a large-scale this area and is the main reason for recurrence.

Aiming at the huge losses caused by instability of Heifangtai landslide group of Three Gorges zone of migration in Yellow River,the geological environment and incentive causes for landslides repeatedly are analyzed.The physical and mechanical properties of rock and soil in this area are also analyzed.The slope stability is calculated with the choice of four conditions.The results show that the landslide group is in an unstable state under the current irrigation conditions and any slope landslide may probably lead to major disaster at any time.

Saturation line is the lifeline of tailing dam.This article analyzes one tailing dam saturation line by finite element method,the conclusions are:(1)The tailing dam saturation line is related with the drawing beach length,with the beach length increasing,the saturation line become far from the grit dam body.When beach-length is more than 70 meters the saturation line away from the dam's foot according to the conclusion of finite element simulation,the dam is stable.(2) The tailing dam is built on the strong water penetration site,the dam's height influences saturation line isn't distinct in the dam's foot.

Based on the concept of the bearing capacity of environment,the concept of the bearing capacity of geologic environment was defined.In succession,the meaning and specialty of the bearing capacity of geologic environment was discussed in detail.Then,taking city geologic environment as an example,the work process of estimating the bearing capacity of geologic environment was given.

泄流坡滑坡位于甘肃省舟曲县城下游5.5km处的白龙江左岸,其成灾方式主要为堵江成坝、回水淹城及溃坝引发洪水灾害。动态监测资料表明,该滑坡正处于匀速变形破坏阶段,滑坡一直处于活动状态。目前斜坡变形进一步加剧,滑动速度有加快趋势,一旦滑坡发生整体大规模的滑动,滑动的土方量将达6072×104m3,滑动的土体将堵塞白龙江并形成20多米高的天然土石坝,回水威胁舟曲县城的人口达2.14万,财产4.96亿元。回水一旦漫堤决口,将直接威胁下游陇南市武都区的安全。

Some irrational problems have appeared in water resources development and utilization in recent decades in the Black River basin,the second largest continental river in the arid region of Northwestern China.To solve problems,the characteristics and causes of water resources evolution in the middle reaches of the basin in recent 50 years are analyzed systematically using the data collected from the basin,and the groundwater resources are evaluated by adopting water balance principle.The results indicate that the annual surface water runoff,coming from mountain areas of the basin,is comparatively stable since 1950s;while the groundwater recharge is decreasing along with the increase of industry and agricultural water uses and development of water conservancy in the middle reach zone of the basin.The groundwater recharge rate has reduced from 36.5×108 m3/a in the end of 1950s to 23.3 ×108 m3/a in the end of 1990s,which induces many ecological environment problems such as sustaining descent of regional groundwater table and attenuation of spring water resources.

The groundwater flow system in Ejina basin could be divided into two systems,the phreatic water and the confined groundwater,and five subsystems.These systems and subsystems are characterized by many factors,such as aquifer structure and its distribution in three dimension,groundwater recharge and discharge,goundwater flow field,as well as groundwater chemistry and environment isotope.