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本文阐述了江西地区岩溶发育由浅到深逐渐减弱的规律,以及岩溶突水量随深度的增加而减小的趋势。文中把没有岩溶发育的灰岩视为相对隔水层,并认为相对隔水层随深度的增加而加厚。据此概念,作者计算了各主要岩溶矿区中深部的隔水层厚度,由原来认为达不到安全隔水层厚度而转化为在中深部普遍达到安全隔水层厚度,从而达到顶水采煤的要求。作者提出了暂避开浅部,先在中深部顶水采煤和在灰岩内布巷的观点。论述了顶水采煤比疏干采煤具有技术上简单,经济上有利的优点。
This paper expounds the law of karst development in Jiangxi area gradually decreasing from shallow depth to deep depth and the trend of karst water inrush decreasing with the increase of depth. In this paper, the limestone without karst development is regarded as the relative aquitard, and the relative aquitard is considered to be thickened as the depth increases. According to this concept, the authors calculated the thickness of the aquitard in the deep part of each major karst mining area, which was originally considered to be less than the thickness of the aquitard and was converted to the thickness of the aquitard in mid-deep so as to achieve the top water coal mining Request. The author put forward the view of avoiding shallow opening temporarily, mining the top water in the middle and deep part, and laying the alley in limestone. It is discussed that the top water coal is technically simpler and economically advantageous than the coal mining with less water.