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| 海河平原东部地区地面沉降机理与趋势 | |
| 引用本文： | 张光辉,费宇红,聂振龙,申建梅,李惠娣,王金哲.海河平原东部地区地面沉降机理与趋势[J].中国地质灾害与防治学报,2005,16(1):13-17. |
| 作者姓名： | 张光辉 费宇红 聂振龙 申建梅 李惠娣 王金哲 |
| 作者单位： | 1. 中国地质科学院,水文地质环境地质研究所,河北,石家庄,050061;河海大学,江苏,南京,210098 2. 河海大学,江苏,南京,210098;中国地质科学院,水文地质环境地质研究所,河北,石家庄,050061 3. 中国地质科学院,水文地质环境地质研究所,河北,石家庄,050061 4. 中国地质科学院,地质力学研究所,北京,100037 |
| 基金项目： | 国家科技部公益性项目"太行山前平原南水北调地下调蓄潜力与效益"资助(2000-163). |
| 摘 要： | 海河平原东部地区是中国水资源最紧缺的地区之一。地下水开采量占该地区供水总水量的60％以上。深、浅层地下水超采量均超过500亿m^3。该区也是山前拦蓄地表径流最高的地区,大小水库达1820多座,拦蓄能力320亿m^3,控制山区流域面积近90％。在地下水补给源减少与大规模超采地下水的综合作用下,造成平原区河流干涸、地下水水位持续下降、含水层疏干及地面沉降等环境地质问题。同时诱发了含水层之间强越流渗透以求动力场平衡问题,第四系松散地层出现垂向压密而导致地层塑性变形。在滨海平原区,区域性地层垂向压密变形存在缓慢发展趋势。研究表明,地面沉降致灾过程至少存在3个阶段,即自然沉降机制阶段、缓变劣变质变阶段以及快速衰变破坏阶段。缓变劣变质变阶段是采取措施减灾最佳时期。 |
| 关 键 词： | 海河平原东部地区 地面沉降机理 动因与阶段性 趋势 |
| 文章编号： | 1003-8035(2005)01-013-05 |
| 修稿时间： | 2004年2月24日 |
Mechanism and trend of land subsidence in the east Haihe River Plain |
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| ZHANG Guang-hui,FEI Yu-hong,NIE Zhen-long,SHEN Jian-mei,LI Hui-di,WANG Jin-zhe.Mechanism and trend of land subsidence in the east Haihe River Plain[J].The Chinese Journal of Geological Hazard and Control,2005,16(1):13-17. | |
| Authors: | ZHANG Guang-hui FEI Yu-hong NIE Zhen-long SHEN Jian-mei LI Hui-di WANG Jin-zhe |
| Institution: | ZHANG Guang-hui~ |
| Abstract: | The east Haihe River plain area is one of the regions which are short of water resources in China.The groundwater withdrawal amount is more than 60 percent of the total water supply amount in this area.The groundwater extra-exploration amount of both deep and shallow aquifer exceeds 5 billion m~3.At the mean time this area is the region which blocks the most land surface water of the mountain zone.There are more than 1820 reservirs in this area.The sluice ability is 3^2 billion m~3.It controls about 90 percent mountain zone valley area.The reduction of groundwater supply and large amount of extra-exploration of groundwater includes many environmental and geological problems such as river drying in plain area,continual decline of groundwater level,dredge of aquifer,land subsidence and so on.At the same time this induces the strong leakage penetrate of aquifers in order to achieve dynamic balance and plastic deformation induced by vertical compression of Quarternary loose strata.The study indicates that land subsidence inducing hazards includes 3 phases:natural subsidence phase,slow qualitative change phase and fast disintegration collapse phase.The slow qualitative change phase is the best period to reduce hazard. |
| Keywords: | the east Haihe River Plain land subsidence mechanism dynamic reason and phase trend |
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