摘要
论文通过苏锡常地区获取了孔隙水Ⅱ承压水开采水位衰变与地面沉降同步监测资料、含水层结构特征研究,论述了Ⅱ承压水压力成为含水层中所夹粘性土层由高压转卸荷膨胀的机理;天然状态水、土应力平衡面在不同顶板压力水头高度内。地面沉降的发生、发展系开采水位超过天然状态的水、土应力平衡面所致[1,2]。尚未超采区则消耗了天然状态高压强水压力。而超采区才是水、土应力失衡互动的结果。两者水力性质不同。给尚未发生地面沉降区由禁采转入按天然状态水、土应力平衡面控制开采措施和地面沉降发生、发展区的形成条件找到了理论依据。提出了超采严重区禁采后,在远离高压强补给源地水位下降期增加在Ⅱ承压含水层上的附加应力荷载仍存在,潜在地面沉降量较大,需采取人工辅助的高压强回灌水来快速提高Ⅱ承压含水层水压强,扼制其沉降速率的治理措施。这不仅对该地区孔隙水Ⅱ承压水开采与地面沉降的关系认识有重要意义,而且对不同埋深孔隙水承压含水层水的开采利用、查明水文地质条件和评价允许开采资源方面将起导向作用。
The synchronized ground subsidence moitoring and ground water table monitoring were conducted during the groundwater exploration of confined aquiferous Ⅱ . Based on the monitoring data and the characteristics of the aquiferous, the authors discussed the expanison process of the clay component in the auriferous, the equilibrium surface of natural water and soil is located in the water head of confined squiferous. The development of land subsidence is caused by the destroy of the equilibrium surface. This provided the theory basis for the management of groundwater exploration. The subsidence control measures were also put forward.
出处
《中国地质灾害与防治学报》
CSCD
2007年第2期132-139,共8页
The Chinese Journal of Geological Hazard and Control
关键词
Ⅱ承压含水层
超量开采
地面沉降
人工回灌含水层
苏锡常地区
confined aquiferous Ⅱ
over exploration of groundwater
land subsidence
water refill
Suxichang Area（Suzhou-Wuxi-Changzhou）
作者简介
缪晓图（1951-），男，江苏溧阳人，水文地质、工程地质高级工程师，长期从事水文地质、工程地质、环境地质研究。
