松散层富水性评价及水体采动等级划分
Evaluation of Water Abundance of Loose Layer and Classification of Water Body Mining Level
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摘要: 为了确定12采区安全煤岩柱留设类型。基于赵家寨矿12采区东翼松散层水文及地质勘探资料，结合抽水试验数据和计算含水层参数的Theis公式，研究了松散层厚度分布及松散层含（隔）水层的垂向变化规律，特别是松散层底部含水层的水文地质参数特征。结果表明,12采区松散层厚度变化受古地形控制，垂向具有多层复合结构，含水层连续性较差，底部含水层富水性为弱到中等，水体采动等级大部分属于Ⅱ级，局部属于Ⅰ级，为留设安全煤岩柱类型提供了科学依据。Abstract: In order to determine the safety coal pillar types of 12th mining area. In this paper, according to the hydrogeology and geological exploration data of the east wing of the 12th mining distract located at Zhaojiazhai Mine, combined pumping test data and Theis formula, we calculate aquifer parameters, and research thickness distribution of loose layer and flat and vertical characteristics of the loose aquifer and aquifuge layers, especially the hydrological parameters at the bottom of the loose aquifer. The results showed that the thickness of the loose layer in this area is obviously controlled by the ancient terrain;The vertical has a multilayer composite structure and the continuity of the aquifer is poor. The bottom aquifer is weak to moderate and the mining level of water body at the bottom of the loose aquifer is grade II and part is gradeⅠ, which provides a scientific basis for designing safety coal and rock pillars types.
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Keywords:
- hydrogeological parameter /
- water abundance /
- coal and rock pillar /
- pumping test /
- Theis formula
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