要十分重视另一类型地质灾害的防治

Chemical geo-hazards and their control

文章提出另一类型地质灾害,即化学型地质灾害的定义及其分类。并认为化学型地质灾害不像物理型地质灾害那样发生瞬时灾害,而有一个延缓过程,但是一旦发生,难于挽救。化学型地质灾害体的主体是化学元素,开展地球化学调查,研究化学元素的赋存规律、土壤及沉积物承受各类元素的极限、各类元素活化的条件是揭示诱发化学型地质灾害机理的关键。因此要十分重视与加强化学型地质灾害的调查、研究、监测与治理工作。

The one type of geological hazard, namely chemical geo-hazard, is defined and categorized in this paper, which presents the agelong and irretrievable geological hazard process involved in chemical elements contrasted with the momentary process of physical geo-hazard. The object of the chemical geo-hazard is chemical element, which indicats that the key to reveal the mechanism of triggering process of chemical geo-hazard is to map geological chemistry and investigate the condition of chemical element in soil and sediment such as metal speciation and bioavailability, as well as the bioaccessibility and loading limitation of chemical element in soil. It becomes consequently important to emphasize and strengthen the chemical geo-hazard investigation, monitoring and remediation in the future.