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Conception and practice of resource utilization, energization and functionalization of coal mining subsidence areas with high groundwater level [PDF]
Underground coal mining often leads to surface subsidence and water accumulation, changes in the ecological environment, as well as in the spatial pattern of land and water resources, in high groundwater level mining areas.
Liang YUAN, Liangji XU
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Gaoya dianqi, 2010 研究分析了运行中SF6高压电气设备水分超标的原因:SF6气体新气的水分不合格、设备充入SF6气体时带进水分、绝缘件带入的水分、吸附剂带入的水分、透过密封件渗入的水分、断路器的泄漏点渗入的水分。通过现场处理及维修设备经验,提高了应用SF6高压电气设备水分超标现场处理的技术,保证了SF6高压电气设备的安全运行可靠性。
吴冷, 毛宏智
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Current situation and scientific challenge of soil and water erosion in Gully Consolidation and Highland Protection Project of DongZhi Loess Plateau [PDF]
Due to the influence of extreme rainfall and high intensity human engineering activities, the advance speed of the gully head in the Loess Tableland is intensified, which seriously threatens the economic and social development of the Loess Tableland.
Buping ZHANG +5 more
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Shuitu Baochi Xuebao, 2018 为了探究浑水膜孔灌肥液入渗在不同土壤初始含水率下水氮运移特性，通过室内肥液入渗试验，研究了不同土壤初始含水率（6.02%，7.40%，8.23%，10.08%和13.20%）条件下入渗特性、湿润锋运移、土壤水分分布以及铵态氮和硝态氮的运移特性，建立了浑水膜孔灌肥液入渗累积入渗量、各向湿润锋运移距离与土壤初始含水率之间的关系，提出了不同土壤初始含水率的累积入渗量以及各向湿润锋运移距离的经验模型。结果表明：累积入渗量、各向湿润锋运移距离以及湿润体内水分和氮素的分布规律均受到土壤初始含水率的影响；同一入渗时刻，
陈 +4 more
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Spatial relationship between root system and soil properties of mature and densely planted Kuerlexiangli pear under long-term strip fertilization [PDF]
[Objective] Kuerlexiangli pear (Pyrus sinkiangensis Yü et Lu.) is the main cultivar in Southern Xinjiang. In recent years, the main trunk dense planting pear orchard has developed rapidly and entered the peak fruiting period.
AN Shijie +9 more
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Shuitu Baochi Xuebao, 2018 通过对西安粉壤土进行4种膜孔直径（6，8，10，12 cm）的浑水膜孔肥液自由入渗室内试验，观测并分析了湿润锋运移距离、累积入渗量、湿润体内水分分布以及NO-3-N和NH+4-N运移特性的变化规律。结果表明：膜孔直径对浑水膜孔灌土壤水氮运移特性具有较为显著的影响。不同膜孔直径的浑水膜孔灌肥液自由入渗累积入渗量符合Philip入渗模型；湿润锋运移距离与入渗时间呈极显著的幂函数关系；在相同的入渗时间内，膜孔直径越大，湿润锋运移距离越大，单位膜孔面积累积入渗量越小，同一位置处土壤NO-3-N和NH+4 ...
刘利华, 费良军, 陈琳, 白瑞
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Mining-affected water resources and ecological effects in ecologically fragile mining areas of western China [PDF]
The ecologically fragile mining area in the west is an important coal production base in China, and the current scale and intensity of coal mining has far exceeded its environmental carrying capacity, which is very likely to cause irreversible damage to ...
Liqiang YU +4 more
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, 2018 土壤水分入渗特性与不同层次土壤水分密切相关,影响农田弃耕后的植被演替过程。为深入理解鄂尔多斯高原弃耕农田土壤水分入渗随植被演替的变化规律,以鄂尔多斯高原软梁、硬梁不同年限的弃耕农田为对象,采用双环入渗仪测定土壤水分入渗参数,利用Kostiakov-Lewis模型模拟软梁和硬梁弃耕农田(共计12个弃耕类别)的水分入渗过程,分析它们的水分入渗规律。结果表明:1)软梁土壤初渗速率随弃耕年限增加呈不显著的降低趋势;稳渗速率和累积入渗高度随弃耕年限增加呈现先降低后增加的趋势,且在弃耕10年时显著降低; 2 ...
周继华 +7 more
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保护性耕作对豫西黄土坡耕地降水产流、土壤水分入渗及分配的影响
Shuitu Baochi Xuebao, 2008 利用长期定位试验(1999~2007年),在豫西旱区坡度为8°的黄土坡耕地上,研究了免耕覆盖、深松覆盖和传统耕作不同耕作措施对降水产流、土壤水分入渗及分配的影响。结果表明:(1)免耕覆盖和深松覆盖延迟产流时间,缩短降水结束后径流持续时间,径流系数较传统耕作分别减少了97.49%和81.20%,径流量和土壤侵蚀量减少80%以上。免耕覆盖水土保持效果最好,在降雨强度为123 mm/h、历时40 min产生微弱水土流失。(2)传统耕作的土壤水分入渗速率初始最大,随后急剧下降,至4 min降至最低。在3~60 ...
王育红 +6 more
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Shuitu Baochi Xuebao, 2018 针对裸岩石砾地利用客土法整治后新增耕地存在失水失肥的现象，以秦岭北麓某荒石滩新增耕地客土耕层作为模拟研究对象，将供试土壤以不同容重分层填装试验土柱，并对其进行了水分入渗试验，分析了裸岩石砾地人为耕作层结构的水分、养分渗漏特征。通过对5种耕作层结构的模拟渗漏试验，结果表明：（1）人为耕层土壤初始渗漏能力和渗漏速率与模拟心土层容重呈负相关关系，其入渗过程可用修正后的Kostiakov入渗模型进行模拟；（2）心土层土壤容重对累积入渗量、入渗速率及养分流失量均有较大影响，并呈负相关关系；（3 ...
张, 李占斌
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