Results 41 to 50 of about 186 (81)
Shuitu Baochi Xuebao, 2003 矿区水土流失是一种典型的人为加速侵蚀,存在着明显不同于原地貌的侵蚀特征:井工开采引起的地表塌陷,使地表变形、坡度加大、侵蚀加重,对地下水质也造成污染;露天开采排出的大量松散堆积物,由于地表严重压实和非均匀沉降,促使径流大量汇集,引起崩塌、滑坡、泥石流等地质灾害,同时增加了入河泥沙量,造成河道淤积、行洪困难.本文论述了采矿塌陷地、煤矸石山、排土场的水土流失特征,采矿对新增入河泥沙的影响,探讨了国内外矿区水土流失的防治所采用的工程措施和生物措施、动态监测水土流失的模型,以及今后尚需研究的内容.
吕春娟, 白中科, 赵景逵
doaj
Feasibility analysis of lateral water interception curtain in loose aquifer during deep coal seam mining in Yushen mining area [PDF]
Yushen mining area is the main mining area of the coal base in northern Shaanxi at present. During the development of high-intensity coal resources, the problems of coal seam roof water disaster and water resource leakage are prominent.
Chunhu ZHAO +4 more
core +1 more source
Shuitu Baochi Xuebao, 2017 为揭示露天煤矿排土场复垦区不同植被类型水土保持效益，选取刺槐林地、榆树林地、混交林地（刺槐和榆树混交）、灌木林地（紫穗槐）和荒草地这5种典型复垦植被下的枯落物作为研究对象，采用室内浸水法对5种植被类型枯落物的持水特性进行研究。结果表明：5个样地的枯落物厚度、蓄积量均表现为：乔木林地＞灌木林地＞荒草地，枯落物厚度在0.80～1.64 cm之间，总蓄积量在0.72～7.51 t/hm2之间；枯落物最大持水量和有效拦蓄能力均表现为刺槐林地最大，枯落物最大持水率为145.58%～206.58%，最大持水量为13.
吕, 傅昕阳, 李叶鑫, 宋子岭
doaj
Risk Assessment and Influencing Factors Analysis of Heavy Metals in Soil of Non-Surface Coal Mines in Southern Hebei Province [PDF]
Non-surface coal mining is an important means to obtain coal resources. It is crucial to study the influencing factors and ecological risks of soil heavy metal contents of non-surface coal mines for the protection and management of mine area ecosystems ...
Anbing ZHANG +5 more
core +1 more source
Shuitu Baochi Xuebao, 2017 采用野外调查和室内综合分析，系统研究了露天煤矿排土场不同植被类型的枯落物特征、土壤物理性质、土壤渗透性能和蓄水能力变化，并采用主成分分析对各样地持水能力进行综合评价。结果表明：不同植被类型枯落物的厚度和蓄积量均差异显著（P乔木林地，乔木林地和灌木林地的土壤入渗能力显著高于荒草地（P荒草地。从排土场枯落物层和土壤层的持水能力角度，可选择乔木树种（刺槐）作为主要复垦植被。
李叶鑫, 吕, 刁立夫
doaj
Ecological protection coal mining technology system and engineering practice [PDF]
In view of the large-scale and efficient coal mining in ecologically fragile areas, which causes a large scope, long cycle and high intensity of ecological impacts, and the lack of a systematic technology that integrates the whole cycle of mining, source
Jie FANG +6 more
core +1 more source
Research on sediment reduction benefits of engineering measures on waste rock slope under different rainfall intensities [PDF]
The dump slope of open-pit coal mines is characterized by steep gradients, loose structure, and poor stability, leading to severe soil erosion under heavy rainfall.
Gang LYU +3 more
core +1 more source
Regulatory detection of edge engineering structures in unloading zones based on parallel perception [PDF]
The primary challenge encountered by unmanned technology during the unloading phase in open-pit mines is safety hazards, particularly concerning the stability and normative detection of engineering structures at the edges of unloading area.
Jianjian YANG +5 more
core +1 more source
Shuitu Baochi Xuebao, 2017 为揭示排土场复垦区不同土地利用类型土壤的水源涵养功能，采用野外实地双环入渗试验和室内理化分析方法，系统地研究了海州露天煤矿排土场复垦区不同土地利用类型（乔木林地、灌木林地、农用地、荒草地）土壤入渗特性及其影响因素。结果表明：不同土地利用类型下的土壤初始入渗率、稳定入渗率和累计入渗量均表现为乔木林地>灌木林地>农用地>荒草地；不同土地利用类型下土壤入渗过程的拟合优度存在差异，G-P综合模型、Kastiakov模型、Horton模型的平均拟合优度依次为0.926，0.908，0.905。G ...
吕 刚 +4 more
doaj
[Safety Analysis of Perioperative Period in Non-Small Cell Lung Cancer Patients with Comorbid Pneumoconiosis]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2022 Yuan Y +4 more
europepmc +1 more source