摘要
在“双碳目标”背景下,储能重要性日渐突出,成为能源资源研究的重点方向和领域。山东大汶口盆地石膏资源丰富,经过多年开采形成了大范围地下采空区,因此矿区工程地质条件评价是安全生产的保障。利用实验测试、资料分析、数据统计等方法,综合评价了大汶口盆地石膏矿区工程地质特征。研究得出盆地内石膏矿层主要位于盆地南部边缘,呈北东-南西向展布,主要层位为古近系官庄群大汶口组二段和三段,开采深度多在400m以浅。新生代构造不均衡活动不仅控制着盆地的形成和发展,也控制着盆地内岩盐、石膏矿床的形成。矿带包括三套以泥岩为主的隔水层,和三套以砂砾石或灰岩为主的含水层,水中钙离子和镁离子含量均较高,水体总硬度大。矿带顶板以泥岩、泥灰岩为主,矿带底板主要为泥岩夹石膏、含膏泥岩,围岩单轴抗压强度较低,顶底板工程地质稳固性较差。
At present,under the background of"dual carbon goal",the importance of energy storage is becoming increasingly prominent,and it has become a key direction and field of energy resources research.The Dawenkou Basin in Shandong province is rich in gypsum resources.After many years of mining,a wide range of underground goaf has been formed,so the evaluation of mining engineering geological conditions is the guarantee of safe production.The engineering geological characteristics of gypsum mining area in Dawenkou Basin are evaluated comprehensively by means of experimental test,data analysis and data statistics.The results show that the gypsum deposits in the basin are mainly located in the southern edge of the basin and distributed in a northeast-SW direction.The main beds are the second and third member of Dawenkou Formation of Guanzhuang Group in Paleogene.The mining depth is mostly shallow within 400m.The Cenozoic tectonic disequilibrium not only controls the formation and development of the basin,but also controls the formation of rock salt and gypsum deposits in the basin.The ore zone consists of three sets of mudstone-dominated aquicludes,and three sets of aquifers dominated by gravel or limestone.The content of calcium and magnesium ions in the water is high.The total hardness of water is high.The roof surrounding rock of the mining zone is mainly mudstone and marl.The floor is mainly mudstone with gypsum and plaster.The uniaxial compressive strength of the surrounding rock is low,and the engineering geological stability of the roof and floor is not good.
作者
郝瑞娥
邢香粉
彭明章
朱礼敏
杜小亮
刘海燕
李晓静
王猛
HAO Rui’e;XING Xiangfen;PENG Mingzhang;ZHU Limin;DU Xiaoliang;LIU Haiyan;LI Xiaojing;WANG Meng(Shandong Geological Exploration Institute of China Chemical Geology and Mine Bureau,Ji,nan,Shandong,250013;Shandong University of Science and Technology,Qingdao,Shandong 266590)
出处
《中国煤炭地质》
2023年第8期17-25,共9页
Coal Geology of China
基金
中化地质矿山总局山东地质勘查院科技项目。
关键词
石膏矿区
工程地质条件
围岩
力学性质
大汶口盆地
gypsum mining area
engineering geological conditions
surrounding rock
mechanical properties
Dawenkou basin
