粉煤灰在矿山复垦中用于土壤改良的试验研究

铝矿床底板土是平果铝矿复垦的主要覆土材料 ,但由于其理化性状差 ,用作复垦地的耕作层需要进行土质改良 ,粉煤灰是这类粘质底板土最经济可行的改性材料。通过一系列的试验研究 ,确定了粉煤灰与底板土的最佳配比 。

矿山复垦地再造耕层材料的筛选

通过对平果铝矿现有几种土壤材料进行室内盆栽试验及模拟小区田间考核，为矿山复垦工程筛选出可供利用的复土材料。推荐以尾矿泥作回填底层。

旱地甘蔗“槽植法”栽培方法

“槽植”法，即沿等高线开植蔗沟并封闭蔗沟两端，形成一个“槽”，保持水土，减少径流；蔗种置于沟底板土上，覆盖土后加以镇压（压实覆土层），使沟底板土、种苗和覆土层紧密结合，减少土壤水分蒸发，同时利用毛细管水以提高出苗率；

Construction monitoring of lock head base plate using distributed optical fibre sensing technique

The concrete hydration heat release process of the base plate is monitored using Roman optical time domain reflectometry（ROTDR） sensing sensors. The monitoring data shows that the internal maximum temperature of the base plate is about 54 ℃ after the concrete was cured for 120 h. The fiber Bragg grating （FBG） temperature sensors are adopted to measure the surface temperature of the concrete and the temperature results are used to compensate the data measured by the pulse-prepump Brillouin optical time-domain analyzer （PPP-BOTDA） to obtain the real concrete surface strain of the base plate. The monitoring data is analyzed to obtain a clear understanding of the strain state of the base plate under the effect of concrete hydration heat release. The monitoring results demonstrate the potential of distributed optical fibre sensing techniques as a powerful tool in real-time construction monitoring, and also provide an important insight into the design, construction and maintenance of large hydraulic structures.

等效渗透原理在岩溶地下水矿坑涌水量计算中的应用

文章以德保铝土矿巴头矿段为例 ,在采用分析计算法计算矿体底板有粘性土与下伏灰岩相隔部分的矿坑涌水量时 ,尝试采用等效渗透原理 ,把粘性土底板面积等效为无粘性土相隔的灰岩底板面积计算。以此计算矿坑的涌水量能较好的反映灰岩直接底板与粘性土底板充水的差异性 ,反映粘性土底板厚度以及粘性土底板渗透性能对充水量的影响 ,并能将两种底板混杂分布时的复杂运算简单化 ,较好地解决了矿坑涌水量的计算问题 。