波阻抗反演和气烟囱技术联合探索预测煤矿富水区

以羊东矿区为实例,对该区域的断层构造进行了精细的三维地震解释;对该区域的三维地震资料进行了波阻抗反演,通过波阻抗与富水性的关系,对该矿区的富水区域进行了圈定;利用神经网络技术对该区三维地震资料的气烟囱属性进行了提取,利用气烟囱与构造导通性的关系对断层构造的导通性进行了评价。最后结合真实的断层发育情况,探索利用波阻抗反演与气烟囱技术联合的方法预测煤矿的富水区,预测的结果在羊东矿矿区得到了较好的验证。     

新郑矿区灰岩岩溶发育规律及富水性分析

根据新郑矿区水文地质勘查成果及相关区域水文地质资料,对矿区内灰岩岩溶发育地质条件、岩溶类型、富水性等进行了规律性的概要评述,总结了矿区岩溶水的最佳富水地带,为煤层开采过程中地下水防治及岩溶地下水源寻找提供了方向.     

淮北临涣矿区太原组灰岩含水层富水性评价

在充分收集淮北临涣矿区水文地质资料的基础上,对太原组灰岩的富水性进行了分析评价。研究结果表明:临涣矿区太原组灰岩岩溶在平面上和垂向上整体发育较差,局部岩溶发育;灰岩富水性整体弱,局部较好;岩溶发育程度有随埋深减弱的规律,相对应有富水性随埋深的增加而减弱。矿区太灰含水层整体属于"高承压,弱富水"型含水层。     

宿县矿区太原组上段灰岩富水性分析

在收集矿区水文地质资料的基础上,对太原组上段灰岩富水性进行分析。研究表明,宿南向斜太灰富水性最好,宿东向斜太灰富水性次之,宿南背斜西部太灰富水性最差;随着灰岩埋深的增大,太灰富水性有减小的趋势。     

淮北矿区太原组灰岩含水层富水性与埋深和构造的关系研究

分析了淮北矿区太原组灰岩含水层特征以及矿区内的5个水文地质亚单元的太原组灰岩含水层的富水性,经分析表明,太原组灰岩富水性与井田构造密切相关,并且其富水性具有随着埋深的增加而减弱的规律.     

瞬变电磁技术在工作面底板探水中的应用

防治水工作是保证煤矿安全生产的重要工程,为探明1142工作面所采煤层底板100m范围内岩层富水性,及对石灰岩与奥灰岩二者之间的水力联系情况进行分析,采用TEM-47瞬变电磁仪对工作面含水区域的情况进行探测,探测结果可以有效地提高探放水钻孔的钻探精确度,消除水害隐患,保证了巷道施工安全。     

晋圣亿欣煤矿水文地质特征及含水层富水性研究

本文介绍了晋圣亿欣煤矿水文地质特征,基于层次分析法对矿区内15#煤层下伏奥陶系碳酸盐类岩溶裂隙水含水层富水性进行评价分析,得出了矿区内奥陶系灰岩含水层强富水区集中分布于矿区中北及西北部,其余大部范围为弱富水性,为矿区防治水措施实施提供参考借鉴。     

淮南矿区潘谢新区A组煤底板灰岩岩溶水富水特征分析

淮南矿区潘谢新区A组煤底板灰岩富水性不均一,奥陶系灰岩、寒武系灰岩富水性较强,太原组灰岩富水性相对较弱.富水性强弱还取决于岩溶发育程度,受岩溶陷落影响富水性较强;奥陶系灰岩、太原组C3-Ⅲ组灰岩水补给太原组C3-Ⅰ组灰岩.     

超前掘进地震反演技术探测富水区研究

对超前掘进地震探测富水区的原理进行论述,找出地震勘探技术探测富水区的方法;对地震勘探技术探测富水区的方法进行实例应用,在实例区域进行地震勘探。采用测井约束反演技术对地震资料进行波阻抗反演并从中提取含水信息,划分富水区域。把反演成果与瞬变电磁探测成果进行对比分析、相互验证,表明地震探测技术可靠性强。     

官地矿太原组石灰岩发育规律及其对煤层开采的影响

根据官地矿近年的勘探资料,对矿井太原组石灰岩的发育特征进行了分析。井田内太原组灰岩层数与厚度发育较稳定:主要有庙沟、毛儿沟、斜道、东大窑四层灰岩,毛儿沟在局部地区分为上下两层,灰岩厚度总体上呈由西向东逐渐增大的趋势。除毛儿沟灰岩在局部地区含水性较强外,其他灰岩岩溶不发育,含水性弱。     

Relevance Between Hydrochemical and Hydrodynamic Data in a Deep Karstified Limestone Aquifer: a Mining Area Case Study

Safe coal mining in a karst region requires that mining operations assess any disturbances in the hydrogeological functioning of local aquifers and flow systems, and determine if disruptions are likely in the mine. We studied the geologic, hydraulic, and geochemical characteristics of the deep Ordovician karstified aquifer in the Xinglongzhuang and Dongtan mines of the Yanzhou coal mining district (China). The presence of a 100 m deep research borehole in the Ordovician limestone aquifer nearby facilitated hydrochemical and hydrodynamic data collection. The buried depth affected karst rock porosity, and the reduced porosity increased karst development. This, in turn, affected the abundance of water in the karst fissure. In addition to calcite and dolomite, the Ordovician limestone contains gypsum, which dissolves to form sulfate ions. Hydraulic data revealed that the water abundance in the research area is comparatively low, except for the C8 syncline zone. The Ordovician strata in this area is located in the deep, slow-flow zone of a vertical karst aquifer system, and the drilling unit water inflow is very low, which could represent the water abundance of the aquifer. Understanding this complex flow system is critical to appropriately assess the area’s deep groundwater resources and guide decision making regarding coal extraction.     

双柳煤矿下组煤开采水文地质条件分析及矿井防治水措施

 摘要：山西省离柳矿区是我国最大的主焦煤基地,双柳煤矿地处离柳矿区西部。双柳煤矿下组煤开采过程中,主要面临上部太原组灰岩含水层和下部高压奥灰含水层的突水威胁,底板承受奥灰水最高水压达5--6Mpa。本文在区域水文地质条件的基础上,分析了矿井主要充水含水层和隔水层以及矿井充水因素,提出了双柳煤矿开采下组煤的主要防治水措施,为保障矿井安全生产提供技术依据。     

河南天瑞集团韩庄矿水文地质特征与矿井充水因素分析

通过对韩庄矿水文地质特征与矿井充水因素分析,认为影响和制约矿井安全生产的水害,主要是老空水和小窑水,其次为煤层顶板砂岩孔隙裂隙含水层水和底板灰岩岩溶裂隙水。     

薛湖煤矿矿井充水主控因素与矿井涌水量预测研究

河南薛湖煤矿在开采过程中受到了水害的影响,为了确保煤矿安全、高效生产,分析了矿井水文地质条件,研究了矿井冲水的主控因素,并对矿井涌水量进行预测计算。研究结果表明,薛湖煤矿矿区发育六大含水层（组）和三大隔水层（组）,煤系地层的二叠系砂岩裂隙含水层是危害矿井生产的主要含水层,随着生产的进行,顶板砂岩水多被疏干,对生产的安全不会造成很大的影响。二2主采煤层的直接充水水源为二叠系二2煤层顶板砂岩裂隙承压水,间接充水水源为二2煤层底板和奥陶系灰岩岩溶裂隙承压水,矿井的自身采空区积水是薛湖矿的充水水源之一。二2煤的导水途径主要有裂隙、断层和封闭不良钻孔3种,高角度正断层可能成为导水通道。越往深部开采水压将会越大,构造和裂隙的发育增加了底板水涌入矿井的危险。选取比拟法和稳定流解析法对采区矿井涌水量进行计算,比拟法计算的全矿井正常涌水量656 m 3/h、最大涌水量787 m 3/h比较符合近年来矿井充水的实际情况,可以作为下一步矿井开采的依据。但随着开采水平的不断延深,太灰岩溶水向矿井突水的概率也将大大提高,若出现短期内多点突水情况,将会超过比拟法预算的最大涌水量。     

山西煤矿区环境地质问题及治理对策探讨

针对目前我国煤炭开采对地质环境破坏的现状,分析和评述了发生在山西煤矿区的主要环境地质问题,指出了煤矿开采对地质环境破坏的主要表现形式为地表变形、水资源受损、水环境变异、生态环境衰退和地貌景观改变,并根据煤矿区地质环境破坏特征,提出了相应的恢复治理和防范措施。     

Groundwater Source Discrimination and Proportion Determination of Mine Inflow Using Ion Analyses: A Case Study from the Longmen Coal Mine,Henan Province,China

Complex hydrogeological conditions in China’s coal mines have contributed to frequent mine water disasters. A simple and effective method to determine water inflow sources and paths is therefore essential. The Longmen Mine, located in Henan Province, in central China was used as a case study. A Piper diagram and cluster analysis were used to screen the characteristic values of 18 water samples from potential aquifers. A comprehensive fuzzy evaluation of the groundwater ions was carried out to determine the main source of the total mine inflow. Then, based on conservation of ionic masses, a matrix function was established to calculate the groundwater recharge composition. Finally, using measured water inflows for the Cambrian limestone aquifer, the calculated and observed results were compared. The results showed that the Carboniferous Taiyuan Formation limestone aquifer (the L₇ limestone aquifer) accounts for 60.8% of the total mine inflow, while the Cambrian limestone and roof sandstone aquifers account for 34.8 and 4.4% of the inflow, respectively. The normal mine inflow totals about 19,200 m³/day, of which 6,840 m³/day is from the Cambrian limestone aquifer. This agrees well with the calculated value of 6,720 m³/day. Thus, the method is feasible and reliable.     

Permeability of the Coal Seam Floor Rock Mass in a Deep Mine Based on In-situ Water Injection Tests

In-situ water injection tests were carried out to study the hydraulic conductivity of the roadway floor strata in the Chengjiao coal mine. Reliable water pressure test data were obtained to assess the permeability of the floor’s rock mass. The initial water pressure of the intact rock mass was greater in the first water injection test, which indicated that its permeability was low. The water pressures increased when the test was repeated, which showed that cracks had propagated in the rock mass. The maximum hydraulic conductivity of the intact rock mass was obtained from different water injection tests and the results were compared with those of the Dongtan Mine in the Yanzhou coalfield, where the floor strata is geologically similar to the Chengjiao Mine’s. The test data verifies that the mine floor’s intact rock mass is very water-resistant. The risk of a water inrush can be judged by the numerical relationship between this resistance and the water pressure of the limestone aquifer. These results can be useful in preventing water inrush through the floor strata in other deep mines.     

地面定向钻孔超前区域治理底板岩溶水害技术应用

为了进一步提高矿井岩溶水害治理技术的可靠性,降低工作面水害威胁,解决矿井面临的太原组上段灰岩岩溶裂隙发育、 水压高、 富水性强、 井下钻孔施工工程量大、 施工工期长等安全技术问题,陈四楼矿在南翼2506工作面(里段)实施了底板水害地面区域治理工程,选取L8灰岩含水层作为目标层位,施工1个主孔,13个分支孔,累计钻探进尺...     

瞬变电磁法在探测工作面顶板富水性中的应用

针对红柳林煤矿生产和建设中存在的5#煤层顶板水害问题,采用矿井瞬变电磁法对25203工作面顶板基岩层的富水性及隐伏含水构造进行探测,查明了该工作面顶板岩层富水区的分布情况。其结果表明:瞬变电磁法能较好的探测工作面顶板含水层富水层位的的空间位置及富水程度,为回采工作面防治顶板水工作提供有效的科学依据。     

山西省阳坡泉煤矿水文地质特征及水压带开采技术研究

阳坡泉煤矿位于鄂尔多斯聚煤盆地东缘的河东煤田中段东边缘。通过对矿区钻井、测井资料、含水岩性组合及出露特征分析,主要含水层为奥陶系石灰岩岩溶裂隙含水层、碎屑岩裂隙含水层、松散岩类孔隙含水层。大气降水、地表水、含水层水、奥灰水是煤田的主要充水来源。根据突水系数法对矿井西翼盘区各主采煤层进行了带压开采安全性评价,10、11、13号煤层最大突水系数值分别为0014、0015、0027 MPa/m,在构造破坏地段工作面回采有可能发生突水。依据该矿井奥灰突水带压评价,提出了该矿井带压开采的路线和安全保障措施,加强导水构造和底板薄弱带的探查与治理,以保障矿井安全开采,同时希望能够为广大同行提供一定的借鉴。