Precision Pumps for Environmental Geomechanics Research

地质封存是指安置核废料、有毒污染物和液化温室气体等危险材料，使其不对人类健康和环境构成威胁。在稳定的岩层中进行隔离是在所储存的危险废物的整个生命周期内实现某种程度的永久性的首选模式。由于冰川作用、地震和其他地质构造作用等过程的长期影响以及与储存物质的相互作用，地质储存环境可以随时间而演变，这可能会破坏岩石。对寄主岩石的损害可以改变其机械和流体输运特性;在CO2封存中，由于碳酸盐部分的溶解，可以形成虫孔。地下水是将危险废物和污染物从处置场运送到生物圈的主要方式;因此，渗透性的任何改变对于评估地质处置的安全性和可靠性至关重要。所需的精密泵是我们研究设施的重要组成部分，它使研究人员能够在机械和化学环境变化期间和之后获得渗透率的准确估计。

Geologic sequestration refers to the emplacement of hazardous materials such as nuclear waste, toxic contaminants and fluidized greenhouse gases, so that they do not pose a threat to human health and the environment. Sequestration in stable rock formations is the preferred mode to achieve a measure of permanency for the lifetime of the stored hazardous waste. Geologic storage settings can evolve with time due to long-term influences of processes such as glaciation, earthquakes, and other geotectonic actions and the interaction with stored substances, which can damage the rock. Damage to the host rock can alter its mechanical and fluid transport characteristics; in CO2 sequestration, wormholes can develop due to dissolution of the carbonate fraction. Groundwater is the main mode of transport of hazardous wastes and contaminants from disposal sites to the biosphere; any alteration of permeability is therefore central to assessing the safety and reliability of geologic disposal. The precision pumps requested are a vital component of our research facilities, which enables the researchers to obtain accurate estimates of permeability during and after changes in the mechanical and chemical environment.