等压泄压装置测试含瓦斯煤渗吸效应可行性研究

发布时间：2018-07-05 11:35

本文选题：等压泄压装置 + 渗吸　；参考：《中国安全生产科学技术》2017年10期

【摘要】：为解决含瓦斯煤渗吸效应测试方法存在弊端、缺陷等问题,利用自制的等压泄压装置对煤样罐内的瓦斯压力进行连续监测,同时对含瓦斯煤在不同吸附平衡压力和不同含水率等压环境下的最大置换量与非等压环境下的最大置换量进行测试。结果表明:等压泄压装置的可行性(R)在98%~99.3%之间,可用于研究外加水分对煤中瓦斯的渗吸效应;等压环境下的最大置换量大于非等压环境下的最大置换量;相同吸附平衡压力下,随着含水率的增加,最大置换量的差值有减小的趋势;相同含水率下,随着吸附平衡压力的增加,最大置换量的差值亦有减小的趋势。因此,等压泄压装置为研究含瓦斯煤渗吸效应提供可靠的工具,使得到的研究结果更具有工程意义,从而为明晰水力化措施防突机理提供理论指导。
[Abstract]:In order to solve the problems such as shortcomings and defects in the test method of gas-bearing coal permeation effect, the self-made isobaric pressure releasing device is used to continuously monitor the gas pressure in the coal sample tank. At the same time, the maximum displacement of gas-bearing coal under different adsorption equilibrium pressure and different moisture content isobaric environment and the maximum displacement amount under non-isobaric environment were tested. The results show that the feasibility of the isobaric pressure relief device (R) is between 99.3% and 98%, which can be used to study the effect of added water on the permeability and absorption of gas in coal, the maximum displacement amount under isobaric environment is larger than that under non-isobaric environment, and the maximum displacement amount under the same adsorption equilibrium pressure is larger than that under non-isobaric pressure. With the increase of water content, the difference of the maximum displacement amount decreases, and the difference of the maximum displacement quantity decreases with the increase of adsorption equilibrium pressure under the same moisture content. Therefore, the isobaric pressure relief device provides a reliable tool for the study of gas-bearing coal permeability and suction effect, and makes the obtained research results more significant in engineering, thus providing theoretical guidance for clarifying the anti-outburst mechanism of hydraulic measures.
【作者单位】：河南理工大学安全科学与工程学院;煤矿灾害预防与抢险救灾教育部工程研究中心;
【基金】：国家自然科学基金项目(51274090) 河南省高校科技创新团队支持计划(17IRTSTHN030)
【分类号】：TD712

【相似文献】