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楼盘施工注浆及荷载对唐山矿井水位的影响分析
盛艳蕊1, 张子广1, 张素欣1, 孙东霞2, 单连君1, 尹宝军2
1.河北省地震局,石家庄市槐中路262号050021;2.唐山市地震局,河北唐山063000
摘要:
2010年唐山矿井水位上升速率明显加快,上升幅度明显高于往年同期。本文从地下水动力学和荷载效应角度,利用抽(注)水试验模型和均布荷载下半无限大的弹性空间理论模型,分析井孔附近楼盘施工注浆及建成后荷载作用对井水位的影响。结果表明,距井孔200~700m范围内注浆,每天注浆2500m3,注浆270d,能引起井水位上升8~11m的变化;大面积的楼盘荷载作用可以引起井水位上升约4m的变化。通过对这些影响因素的分析,认为唐山矿井水位的上升异常与楼盘施工注浆及建成后的荷载作用有一定的相关性。
关键词:  唐山矿井  水位上升  均布荷载理论模型  抽水试验模型  
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基金项目:震情跟踪合同制定向工作任务((2011020303)资助
Impact of grouting and loading of building construction on water level in Tangshan mine wells
Sheng Yanrui1, Tin Baojun1, Zhang Ziguang1, Zhang Suxin2, Sun Dongxia1, Shah Lianjun2
1.Earthquake Administration of Hebei Province, Shijiazhuang 050021, China;2.Earthquake Administration of Tangshan City, Tangshan 063000, I-Iebei, China
Abstract:
The water level rising rate of Tangshan mine well significantly accelerated in 2010, and the ascensional range was obviously higher than the same period in previous years. From the point of view of groundwater dynamics and loading effects, using the pumping (pouring) water test model and semi-infinite elastic space theory model under uniform load, grouting and loading of the near building construction were analyzed. Results represent that range of 200 - 700m grouting, daily grouting 2500m3 , grouting 270d, can cause rising change in 8 - 11 m of well water level, and loading of large area of the near building can cause about 4m changes of well water level. The analysis of these factors shows that water level anomalous rising of Tangshan mine well was relevant to grouting and loading of the near building construction. This study provides a scientific basis for anomalous rising analysis of water level in Tangshan mine wells.
Key words:  Tangshan mine well  Water level rise  Uniform load theory model  Pumping test model