摘要
核桃峪煤矿是目前甘肃陇东煤田在建的规模最大矿井,设计单位要求地质勘查部门提交采用不同计算方法对井田先期开采地段正常涌水量和最大涌水量进行预测。通过分析矿井水文地质条件,分别采用了大井法、水平廊道法和比拟法对矿井涌水量做出了预测,并对预测结果进行了对比分析。结果表明:(1)解析法采用实测影响半径计算的涌水量与比拟法的结果相对接近,选用较大值,即为比拟法的结果,先期开采地段最大涌水量为28 800m3/d,正常涌水量为20 160m3/d;(2)在矿井涌水量预测中,用经验公式计算的承压水影响半径偏小,导致预算的涌水量结果偏大。在对各种预测方法应用条件分析比较的前提下,建议若有条件采用比拟法,应首选比拟法预算矿井涌水量。
The Hetaoyu coalmine is the largest coalmine under construction in the Longdong coalfield, Gansu at present. The designer has demanded the geological exploration party to carry out prediction of normal and maximum mine water inflows of mining district in advance through different estimation methods. Through mine hydrogeological condition analysis, virtual large-diameter well method, horizontal collector gallery method and analogue method have been used to predict mine water inflow respectively and then comparatively analyzed prediction results. The result has shown： （1） The analytic method uses measured radius of influence estimated water inflow relatively close to analogue method estimated, using the larger value--a result from analogue method predicted maximum mine inflow of mining district in advance is 28 800m^3/d, normal mine inflow 20 160m^3/d. （2） In mine water inflow prediction, confined water radius of influence from empirical formula is on the small side, thus brings on estimated mine inflow on the large side. Under the premise of comparative analysis of each method applied conditions, if conditions permitted, the analogue method should be preferred to estimate mine water inflow.
出处
《中国煤炭地质》
2015年第2期32-36,56,共6页
Coal Geology of China
关键词
矿井涌水量预测
大井法
水平廊道法
比拟法
对比分析
mine water inflow prediction
virtual large-diameter well method
horizontal collector gallery method
analogue method
comparative analysis
