保德煤矿奥陶纪灰岩水H2S形成机理及防治技术  

Formation Mechanism and Prevention Technology of H2S in Ordovician Limestone Water in Baode Coal Mine

作　　者：张泽源 侯昕悦 王世东 许峰 刘其声 ZHANG Zeyuan;HOU Xinyue;WANG Shidong;XU Feng;LIU Qisheng(China Coal Research Institute.Beijing 100013,China;China Coal Technology and Engineering Group Xi'an Research Institute,Xi'an 710054,China;School of Water and Environment,Clurng'an University,Xi'an 710054,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]中煤科工集团西安研究院有限公司,陕西西安710054 [3]长安大学水利与环境学院,陕西西安710000

出　　处：《煤矿安全》2020年第5期203-207,共5页Safety in Coal Mines

基　　金：国家自然科学基金青年科学基金资助项目(41402220,41302214);中煤科工集团西安研究院有限公司科技创新基金资助项目(2016XAYMS09)。

摘　　要：基于保德煤矿不同时期奥陶纪灰岩水水化学资料,采用离子组合比例分析、水文地球化学模拟等方法,通过PHREEQC软件计算饱和指数来分析奥灰水水化学成分沿流程的变化规律,定性分析奥陶纪灰岩水硫化氢气体形成机理及水岩相互作用对硫化氢气体形成的影响,并对硫化氢气体防控关键技术进行研究。结果表明:从径流区到滞流区,水化学类型由HCO3-Na(Na·Ca)→HCO3·Cl-Na·Ca(Ca·Mg)→Cl-Na(Na·Ca),SO4^2-离子含量呈总体增加趋势,最终由BSR作用形成H2S气体。CH4和C将硫酸盐矿物还原生成H2S同时生成CO2、HCO3-。根据现场实际情况设计防喷装置和孔口负压抽放装置。This study is based on the water and chemistry data of Ordovician limestone in different periods of Baode Coal Mine,using ion combination ratio analysis,hydrogeo-chemical simulation,and other methods,the saturation index was calculated by PHREEQC software to analyze the variation of the chemical composition of the ash water in the process.The formation mechanism of the hydrogen sulfide gas in the Ordovician limestone water and the influence of water-rock interaction on the formation of hydrogen sulfide gas were analyzed qualitatively.And the key technologies of hydrogen sulfide gas prevention and control are researched.The results show that from the runoff zone to the stagnant zone,the water chemistry type is HCO3-Na(Na·Ca)→HCO3·Cl-Na·Ca(Ca·Mg)→Cl-Na(Na·Ca),the overall SO4^2- ion content has a increasing trend,and finally the H2S gas is formed by the action of BSR.CH4 and C reduce sulfate minerals to form H2S and simultaneously produce CO2 and HCO3^-.According to the actual situation of the site,the anti-spray device and the orifice negative pressure pumping device were designed.

关 键 词：奥陶纪灰岩水 硫化氢 防控技术 水文地球化学模拟 离子组合比例 

分 类 号：TD711[矿业工程—矿井通风与安全]