【摘要】 以鲁西南地区煤炭资源开发中与井筒建设有关的上第三系硬粘土工程地质性质的分析测试结果为基础 ,研究了煤系上部巨厚覆盖层中上第三系硬粘土的工程特性 ,并对开挖条件下硬粘土对井筒变形可能产生的不良影响进行了分析更多还原

【Abstract】 Based on the test results of engineering geological properties of Neogene hard clays, which are involved in the shaft construction during coal mining in southwest of Shandong province, this paper have studied the engineering properties of hard clays in the covering layers of the coal measures, and analyzed the probable effects on shaft wall deformation caused by hard clays in the condition of excavation.更多还原