| 论天津市北部碳酸盐岩地区修建地下水库的可行性 |
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| 引用本文：王芸生,许贵森,谭龙章.1985.论天津市北部碳酸盐岩地区修建地下水库的可行性[J].地球学报,7(1):129-137. |
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| 中文摘要:天津市北部碳酸盐岩浅埋区构造属下仓—林南仓复向斜,向斜的周边及底部有良好的隔水边界,是一个十分理想的蓄水构造。奥陶系石灰岩分布面积340平方公里,厚约800米,岩溶及裂隙十分发育,具有相当大的储水空间。从地质条件分析,修建地下水库是完全可行的。 北系河流除上游水库拦蓄外,每年尚有15亿吨弃水,保证率可达百分之五十,回灌水源是有保证的。 兴建地下水库具有不占地、不移民、工期短、施工易和投资少等优点,在技术上是可行的,在经济上是合算的。竣工后的地下水库每天可向使用部门提供相当于天津市自来水公司每天供水的水量。 |
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| ON THE FEASIBILITY OF CONSTRUCTING UNDERGROUND RESERVOIR IN THE CARBONATE ROCKS REGION IN THE NORTH OF TIANJIN |
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| Abstract:Since the diversion work, which diverts water from the Luanhe River into Tianjin, has been constructed, the serious water-lacking problem of Tianjin remains to be solved.Because Tianjin is situated in a coastal plain, the storage capacity on the surface is too weak to regulate and store water artificially.In the north of Tianjin, the region of shallow-lying carbonate rocks, in which the Ordovician limestone is about 800 meter thick and distribute over an area about 350 square kilometers, structurally belongs to the Xiacang-Linnancang synclinorium, which is an ideal place for water-storing, because of the fact that the aquicludes are well developed at its margin and bottom, and there are many karsts and cracks within the limestone. As mentioned above, it is clear that to construct underground reservoir is a feasible scheme geologically. Except the waters which are retained by the reservoirs built at the upper reachs of the rivers to the north of Tianjin, there are about fifteen hundred millions tons of water still available for other uses every year. About half of this amount could be used for underground storage.To construct the underground reservoir has many advantages. For example, it will not occupy land and involve population evacuation, and will reduce evaporation of water to a minimum, and save time and investment. If the proposal is fulfilled, it can provide to the consumers 820, 000 tons water daily, which equals to the amount supplied by the water-company of Tianjin every day at present. |
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