在当前基础设施建设高速发展的背景下,高填方工程被广泛应用于道路、机场等建设项目中。然而,粗粒土作为高填方工程的主要材料之一,其工后沉降问题一直是影响工程质量和安全的关键因素,尤其是在复杂地质条件下的不均匀沉降现象更为显著...在当前基础设施建设高速发展的背景下,高填方工程被广泛应用于道路、机场等建设项目中。然而,粗粒土作为高填方工程的主要材料之一,其工后沉降问题一直是影响工程质量和安全的关键因素,尤其是在复杂地质条件下的不均匀沉降现象更为显著。针对这一问题,本文深入分析了粗粒土高填方工程工后沉降的主要影响因素及其作用机理,以及工后沉降的预测方法,并从多个方面着手,提出了有效的控制措施。这些研究成果不仅为解决实际工程中的沉降问题提供了科学依据,也为相关领域的研究提供了新的视角和方法,对于提高粗粒土工程的质量与安全性具有重要意义。In the context of the rapid development of infrastructure construction, high-fill engineering is widely used in construction projects such as roads and airports. However, as one of the main materials of high-fill engineering, the post-construction settlement of coarse-grained soil has always been a key factor affecting the quality and safety of the project, especially the uneven settlement phenomenon under complex geological conditions. In order to solve this problem, this paper deeply analyzes the main influencing factors and their mechanism of post-construction settlement in coarse-grained soil high-fill engineering, as well as the prediction method of post-construction settlement, and proposes effective control measures from many aspects. These research results not only provide a scientific basis for solving the settlement problem in practical engineering, but also provide new perspectives and methods for research in related fields, which are of great significance for improving the quality and safety of coarse-grained soil engineering.展开更多
煤矿固体废弃物是煤炭开采、洗选和利用过程中产生的一种工业固体废弃物。我国煤矿固体废弃物虽然利用率逐年上升,但现阶段的堆存量仍然很大,它不仅侵占土地资源,还会造成严重的环境污染。本文通过系统检索知网、Web of Science和Google...煤矿固体废弃物是煤炭开采、洗选和利用过程中产生的一种工业固体废弃物。我国煤矿固体废弃物虽然利用率逐年上升,但现阶段的堆存量仍然很大,它不仅侵占土地资源,还会造成严重的环境污染。本文通过系统检索知网、Web of Science和Google Scholar数据库,收集了2014—2024年间关于煤矿固体废弃物理化特征及生态环境影响方面的研究文献,综合分析发现,煤矿固体废弃物对环境的影响主要表现在:①煤矿固体废弃物在堆存过程中产生的多环芳烃、SO_(2)等气体和细颗粒物,会对大气产生污染;②煤矿固体废弃物中的重金属在淋滤过程中会污染周围地下水;③煤矿固体废弃物中的Cd、Cr、Hg等重金属元素会通过风化、浸出等过程向周围土壤迁移释放,造成严重的重金属污染。基于安全、环保、监测等相关规定,结合目前综合利用和处理现状,提出了今后煤矿固体废弃物的研究重点。展开更多
文摘在当前基础设施建设高速发展的背景下,高填方工程被广泛应用于道路、机场等建设项目中。然而,粗粒土作为高填方工程的主要材料之一,其工后沉降问题一直是影响工程质量和安全的关键因素,尤其是在复杂地质条件下的不均匀沉降现象更为显著。针对这一问题,本文深入分析了粗粒土高填方工程工后沉降的主要影响因素及其作用机理,以及工后沉降的预测方法,并从多个方面着手,提出了有效的控制措施。这些研究成果不仅为解决实际工程中的沉降问题提供了科学依据,也为相关领域的研究提供了新的视角和方法,对于提高粗粒土工程的质量与安全性具有重要意义。In the context of the rapid development of infrastructure construction, high-fill engineering is widely used in construction projects such as roads and airports. However, as one of the main materials of high-fill engineering, the post-construction settlement of coarse-grained soil has always been a key factor affecting the quality and safety of the project, especially the uneven settlement phenomenon under complex geological conditions. In order to solve this problem, this paper deeply analyzes the main influencing factors and their mechanism of post-construction settlement in coarse-grained soil high-fill engineering, as well as the prediction method of post-construction settlement, and proposes effective control measures from many aspects. These research results not only provide a scientific basis for solving the settlement problem in practical engineering, but also provide new perspectives and methods for research in related fields, which are of great significance for improving the quality and safety of coarse-grained soil engineering.
文摘煤矿固体废弃物是煤炭开采、洗选和利用过程中产生的一种工业固体废弃物。我国煤矿固体废弃物虽然利用率逐年上升,但现阶段的堆存量仍然很大,它不仅侵占土地资源,还会造成严重的环境污染。本文通过系统检索知网、Web of Science和Google Scholar数据库,收集了2014—2024年间关于煤矿固体废弃物理化特征及生态环境影响方面的研究文献,综合分析发现,煤矿固体废弃物对环境的影响主要表现在:①煤矿固体废弃物在堆存过程中产生的多环芳烃、SO_(2)等气体和细颗粒物,会对大气产生污染;②煤矿固体废弃物中的重金属在淋滤过程中会污染周围地下水;③煤矿固体废弃物中的Cd、Cr、Hg等重金属元素会通过风化、浸出等过程向周围土壤迁移释放,造成严重的重金属污染。基于安全、环保、监测等相关规定,结合目前综合利用和处理现状,提出了今后煤矿固体废弃物的研究重点。
