<html> <head></head> <body> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="94290" data-tools="135编辑器"> <section data-width="96%"> <section data-bgopacity="50%"> <section> 创新点 </section> </section> <section data-width="100%"> <section> <section data-autoskip="1" data-bgopacity="50%"> <p><span><span>本文从开采扰动、隐伏构造、承压水共同作用角度分析</span><span lang="EN-US" new="new" roman="roman" times="times">,</span><span>根据典型突水矿井地质条件及突水原因分析</span><span lang="EN-US" new="new" roman="roman" times="times">,</span><span>建立了含隐伏导含水构造的概化力学模型</span><span lang="EN-US" new="new" roman="roman" times="times">,</span><span>通过断裂力学理论得出了含水裂隙的起裂条件、抗渗透强度及裂隙扩展判据</span><span lang="EN-US" new="new" roman="roman" times="times">,</span><span>以邯邢矿区典型突水矿区地质与开采参数为例进行算例分析</span><span lang="EN-US" new="new" roman="roman" times="times">,</span><span>得出了深部承压水上含隐伏构造煤层底板渗流路径的扩展规律。</span><span></span></span></p> </section> </section> </section> </section> </section> <p><br></p> <section data-bcless="darken"> <section data-bcless="darken"> <p> </p> <div> <img data-copyright="0" data-cropselx1="0" data-cropselx2="100" data-cropsely1="0" data-cropsely2="100" data-ratio="1" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-af0aa02cc49b2dc25a1f4ca7bc08ae7a" data-type="png" data-w="208"> </div> <p></p> <p><span>长按识别二维码，进入点击PDF可查看全文</span><br></p> </section> </section> <section> <section data-bcless="darken"> <br> </section> </section> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="94592" data-tools="135编辑器"> <section> <section> <br> </section> <section data-bgless="spin" data-bglessp="20"> <section data-brushtype="text"> 作 &nbsp; 者 </section> </section> <section> <br> </section> </section> </section> <p><br></p> <p>赵家巍<sup><span>1</span></sup>,周宏伟<sup><span>2,3</span></sup>,薛东杰<sup><span>1</span></sup>,苏 腾<sup><span>1</span></sup>,邓慧琳<sup><span>1</span></sup>,杨洪增<sup><span>4</span></sup><br></p> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="94592" data-tools="135编辑器"> <section> <section> <br> </section> <section data-bgless="spin" data-bglessp="20"> <section data-brushtype="text"> 作者单位 </section> </section> <section> <br> </section> </section> </section> <p><br></p> </section> </section> <p>1. 中国矿业大学(北京) 力学与建筑工程学院；2. 中国矿业大学(北京) 能源与矿业学院；3. 煤炭资源与安全开采国家重点实验室；4. 冀中能源集团有限责任公司<br></p> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="94592" data-tools="135编辑器"> <section> <section> <br> </section> <section data-bgless="spin" data-bglessp="20"> <section data-brushtype="text"> 摘 &nbsp; 要 </section> </section> <section> <br> </section> </section> </section> <p><br></p> </section> </section> <p><span break-word="break-word" gb="gb" helvetica="helvetica" justify="justify" neue="neue" none="none" normal="normal" px="px" sans="sans" sc="sc" ui="ui" yahei="yahei">针对邯邢矿区矿井开采深度逐渐加深与采动影响下隐伏构造活化而导致底板奥灰层突水威胁日益加重的问题,研究大采深、高水压条件下含不同隐伏构造类型底板高承压水的始渗条件和渗流路径扩展规律,以确定矿井底板突水条件及重点治理区域。</span></p> <p><br></p> <p>从开采扰动、隐伏构造、承压水共同作用角度分析,根据典型突水矿井地质条件及突水原因分析,建立了含隐伏导含水构造的概化力学模型。</p> <p><br></p> <p>通过断裂力学理论得出了含水裂隙的起裂条件、抗渗透强度及由主应力表达的裂隙扩展判据,应用弹性力学边界荷载在半无限板内传播的经典求解方法推导得出了采动应力与承压水压力耦合作用下含隐伏构造煤层底板的垂直应力、水平应力和剪切应力表达式,在所得应力分量基础上通过应力张量的不变量求解应力状态方程得到含水裂隙扩展判据中的主应力表达式。</p> <p><br></p> <p>以邯邢矿区典型突水矿区地质与开采参数为例进行算例分析,通过编制Matlab计算程序计算得出底板裂隙的扩展路径。进而采用可模拟岩石破裂声发射且裂隙扩展可视化效果较好的RFPA 数值软件进行验证分析,再现了底板渗流路径演化过程。</p> <p><br></p> <p><span break-word="break-word" gb="gb" helvetica="helvetica" justify="justify" neue="neue" none="none" normal="normal" px="px" sans="sans" sc="sc" ui="ui" yahei="yahei">理论计算与数值分析结果表明:隐伏构造的局部应力扰动作用影响了渗流路径的扩展方向,使3 种类型底板分别呈现出不同的渗流路径,对于完整型底板,渗流裂隙由奥灰承压水层顶界面至采空区两侧边界呈“正八字”形向采空区扩展。</span></p> <p><br></p> <p><span break-word="break-word" gb="gb" helvetica="helvetica" justify="justify" neue="neue" none="none" normal="normal" px="px" sans="sans" sc="sc" ui="ui" yahei="yahei">对于隐伏陷落柱型底板,渗流裂隙沿陷落柱顶界面呈“倒八字”形向上发散式扩,至底板28m深度时与采动裂隙贯通而停止扩展,其延线分别指向采空区两侧边界展;而对于隐伏断层型底板,渗流裂隙则沿断层延线的反向扩展,至底板30 m深度时与采动裂隙贯通而停止扩展,其延线指向工作面后方,在底板含水裂隙自下而上与底板采动裂隙自上而下联合扩展作用下最终贯通形成底板奥灰水至采煤工作面的渗流通道。</span></p> <p><br></p> <p><span break-word="break-word" gb="gb" helvetica="helvetica" justify="justify" neue="neue" none="none" normal="normal" px="px" sans="sans" sc="sc" ui="ui" yahei="yahei">基于理论计算和数值模拟得出的底板承压水渗流路径扩展规律,在实际工程中可结合微震监测技术来实时动态捕捉煤层底板隐伏导含水构造活化的前兆信息,进而实现底板突水路径的预测预报和快速重点区域治理。</span></p> <p><span break-word="break-word" gb="gb" helvetica="helvetica" justify="justify" neue="neue" none="none" normal="normal" px="px" sans="sans" sc="sc" ui="ui" yahei="yahei"> <mpchecktext> <br> </mpchecktext></span><br></p> <p><br></p> </section> </section> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="95124" data-tools="135编辑器"> <section data-width="100%"> <section> <section> <section data-brushtype="text"> 作者简介 </section> </section> </section> <section> <section></section> </section> <section data-width="100%"> <section> <section> <section data-width="100%"></section> <section data-autoskip="1"> <p><br></p> <p> </p> <div> <img data-copyright="0" data-ratio="0.8280254777070064" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-392ecf659eb6daccaa7df1c83ad87bd9" data-type="jpeg" data-w="471"> </div> <p></p> <p><span></span><br></p> <p><span><span>赵家巍，男，</span><span new="" times="">1988</span><span>年</span><span new="" times="">2</span><span>月</span><span new="" times="">11</span><span>日生，河北邢台人，中国矿业大学（北京）岩土工程专业在读博士。</span></span></p> <p><strong><span>研究方向</span></strong></p> <p><span>岩石力学与采矿工程</span></p> <p><strong><span>主要成果</span></strong></p> <p><span><span>提出了煤层充填开采顶板多跨超静定结构力学模型，获得了“顶板</span>-<span>支架</span>-<span>充填体”相互作用关系；</span></span><span>基于低渗介质建模，得到了煤层充填采动条件下围岩渗流场演化规律，为高瓦斯或瓦斯突出矿井及高承压水矿井实施充填开采时瓦斯、突水等灾害防治提供了理论指导。</span><br></p> </section> </section> </section> </section> <section></section> </section> </section> <p><br></p> <p><br></p> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="94592" data-tools="135编辑器"> <section> <section> <br> </section> <section data-bgless="spin" data-bglessp="20"> <section data-brushtype="text"> 部分图片 </section> </section> </section> </section> </section> </section> <p><br></p> <p> </p> <div> <img data-ratio="0.659957627118644" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-5fba9bfe9ea7e01e9826d3df3c98ae83" data-type="png" data-w="944"> </div> <p></p> <p><span>邯邢矿区典型突水矿井概化地质模型</span></p> <p><br></p> <p> </p> <div> <img data-ratio="2.43921139101862" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-71dbe3bfcdca497db12cf7c0292eede9" data-type="png" data-w="913"> </div> <p></p> <p>承压水上煤层底板附加应力概化力学模型</p> <p><br></p> <p><br></p> <p> </p> <div> <img data-ratio="2.167277167277167" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-dd042fabbc14ce00bf2d4cd7050837c2" data-type="png" data-w="819"> </div> <p></p> <p>承压水上煤层底板渗流裂隙扩展规律<br></p> <p><br></p> <p><br></p> <p> </p> <div> <img data-ratio="1.9335989375830013" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-3034d38148943d8c5bca86e2d3d1a4af" data-type="png" data-w="753"> </div> <p></p> <p>承压水上煤层底板渗流路径示意</p> <p><br></p> <p><br></p> <p> </p> <div> <img data-ratio="0.6195899772209568" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-47cb617afc504e3e99f770a7df46874c" data-type="png" data-w="878"> </div> <p></p> <p><span>煤层底板渗流演化过程的数值模型</span></p> <p><span><br></span></p> <p> </p> <div> <img data-copyright="0" data-ratio="2.438428874734607" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-2613d8ed30b5a5a22bccfbb1c59cdbac" data-type="jpeg" data-w="942"> </div> <span>不同类型构造作用下底板裂隙扩展声发射演化过程</span> <br> <p></p> <p><span><br></span></p> <p> </p> <div> <img data-ratio="1.9976798143851508" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-b482bf6530befb9f776171c74cf2bfa4" data-type="png" data-w="862"> </div> <p></p> <p>不同类型构造作用下底板渗流路径扩展计算结果</p> <p> <mpchecktext> <br> </mpchecktext><br></p> <p><br></p> <p> </p> <div> <img data-ratio="0.4658959537572254" data-s="300,640" src="http://pet-crawler-online.oss-cn-beijing.aliyuncs.com/sj-weixin/5768323-405024ca62c3f2eb57d2ee8b9d2d09bd" data-type="png" data-w="865"> </div> <p></p> <p><span>采煤工作面底板微震事件分布</span></p> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="us1412320"> <section data-id="us1205424"> <section data-id="us1204772"> <section data-id="us932300"> <section data-id="us601731"> <section data-id="us538891"> <section data-id="us518817"> <hr> <p><span>来源：</span></p> <p>赵家巍,周宏伟,薛东杰,等. 深部承压水上含隐伏构造煤层底板渗流路径扩展规律[J]. 煤炭学报,2019,44(6):1836-1845.</p> <p>ZHAO Jiawei,ZHOU Hongwei,XUE Dongjie,et al. Expansion law of seepage path in the concealed structural floor of coal seam in deep confined water[J]. Journal of China Coal Society,2019,44(6):1836-1845.</p> <p><br></p> <p><strong><span>责任编辑：<span>韩晋平</span></span></strong><span> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; </span><strong><span>编辑整理：</span></strong><span>郭晓炜 &nbsp; &nbsp; &nbsp;&nbsp;</span></p> <p><strong><span>审 &nbsp; &nbsp; &nbsp; 核</span></strong><strong><span>：</span></strong><span>常琛</span><br></p> <section> <section> <section> <section> <p><br></p> <section> <section> <section> <section></section> <section> <p>End</p> </section> <section></section> </section> </section> </section> </section> </section> </section> </section> <p><br></p> <section data-role="outer" label="Powered by 135editor.com"> <section data-role="outer" label="Powered by 135editor.com"> <section data-id="134" data-tools="135编辑器"> <section> <section> <section data-brushtype="text"> 往期精彩 </section> </section> </section> </section> <p><a data-itemshowtype="0" data-linktype="2" hasload="1" href="http://mp.weixin.qq.com/s?__biz=MzAwNzUyMjI5NA==&amp;mid=2651406708&amp;idx=1&amp;sn=7b3ed14fa307f3fff99234e1bc0f6812&amp;chksm=808133edb7f6bafb8151137f27c7960ae67f545526ddf5a4e0b673626b947bafdde2a65ccdfc&amp;scene=21#wechat_redirect" target="_blank"><span>钱鸣高,许家林：煤炭开采与岩层运动</span></a></p> <p