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陈蛮庄煤矿井下降温方案0913
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<p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>陈蛮庄煤矿位于单县煤田的西部,矿井设计生产能力为</span>0.90Mt/a,生产能力1.80Mt/a。中央并列抽出式通风方式,采用立井开拓,设置主井、副井、风井三个井筒。是一座现代化的大型矿井。</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>依据山东省地质科学实验研究院编制的《山东省单县煤田陈蛮庄井田勘探报告》,陈蛮庄煤矿的地温梯度:主检孔中性点深度</span>560米,温度28.8度;最深测点970米,温度38.2度,地温梯度2.1度/百米;副检孔中性点深度700米,温度33.3度;最深测点1130米,温度45.8度,地温梯度2.49度/百米,属于</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>二级热害矿区。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>矿井总涌水量为</span>39.68m</span><sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;vertical-align:super;">3</span></sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">/h。与本井田水文地质条件较为接近的张集井田涌水量为1049.79m</span><sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;vertical-align:super;">3</span></sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">/h,本井田采用数据应进一步核实,应进一步补充水文地质工作。依据煤炭工业济南设计研究院编制的《陈蛮庄煤矿初步设计》数据,暂定矿井正常涌水量为500 m</span><sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;vertical-align:super;">3</span></sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">/h,最大涌水量为1000m</span><sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;vertical-align:super;">3</span></sup><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">/h。</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <h2> <span style="font-family:楷体_GB2312;color:#000000;font-size:16pt;font-weight:bold;"><span>1.1<span> </span></span></span><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"><span>热害现状</span></span></b><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"></span></b> </h2> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>依据山东省地质科学实验研究院编制的《山东省单县煤田陈蛮庄井田勘探报告》,对</span>13个钻孔进行了简易测温,未进行近似稳态测温工作。根据邻区《巨野煤田普查报告》测温资料,恒温带深度为50m左右,温度18.9℃。经计算,本区地温梯度平均2.59℃/100m,即地热增温率1℃/38.6m。属地温梯度正常区。根据测温资料,煤层底板温度与埋深成正比关系。经换算,3煤层底板-750m以深为大于37℃的二级高温区,亦即本井田可采煤层基本上都处于二级高温区内。因此,本井田在建设及开采过程中,应采取综合措施进行热害防治,确保安全。</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <h2> <span style="font-family:楷体_GB2312;color:#000000;font-size:16pt;font-weight:bold;"><span>1.2<span> </span></span></span><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"><span>设计内容</span></span></b><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"></span></b> </h2> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>目前井下巷道尚未成型,实际围岩温度、巷道位置、涌水量等无法精确确定,只能根据地质勘探报告和矿井初步设计预测。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>本方案针对矿井建设的各个阶段,分别制定制冷方案,对制冷机房内的设备进行设计、选型,估算工程投资,计算运行费用。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <h2> <span style="font-family:楷体_GB2312;color:#000000;font-size:16pt;font-weight:bold;"><span>1.3<span> </span></span></span><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"><span>设计依据</span></span></b><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"></span></b> </h2> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《地源热泵系统工程技术规范》</span>GB 50366-2005</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《采暖通风与空气调节设计规范》(</span>GB50019-2003)</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《矿井排水设计手册》</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《陈蛮庄矿井初步设计》</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《煤炭安全规程》</span>2010版</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <h2> <span style="font-family:楷体_GB2312;color:#000000;font-size:16pt;font-weight:bold;"><span>1.4<span> </span></span></span><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"><span>制冷负荷计算</span></span></b><b><span style="font-family:楷体_GB2312;font-size:16pt;font-weight:bold;"></span></b> </h2> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>《煤矿安全规程》第一百零二条规定:</span>“生产矿井采掘工作面空气温度不得超过26℃,机电设备硐室的空气温度不得超过30℃;当空气温度超过时,必须缩短超温地点工作人员的工作时间,并给予高温保健待遇。采掘工作面的空气温度超过30℃、机电设备硐室的空气温度超过34℃时,必须停止作业。”“对于新建改扩建矿井设计时,必须进行矿井风温预测计算,超过地点必须有制冷降温设计配齐降温设施”。</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>本设计按照《煤炭安全规程》规定的</span>26℃为标准进行冷负荷计算。</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>井下热源主要有以下几部分:</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">1、风流压缩热</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>本矿井开采深度大,大部分为下山开采,垂高大,风流在井巷中自然压缩,其压缩热使风流升温较大。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">2、围岩矿井水散热</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>本矿为深井高地温,由于新生界松散层较厚,开采深度大,其井下地温高,围岩散热成为影响矿井井下风流温度的主要热源。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">3、机电设备散热影响</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>该矿开采强度大,井下采、掘、运等生产环节机械化程度高,设备功率大,机电设备散热成为该矿井的又一主要热源。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;">4、其他散热影响</span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>其他散热包括人体散热、沟管散热、爆破热等。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p> <p style="text-indent:28pt;" class="MsoNormal"> <span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"><span>下面对几种热源分别进行计算。</span></span><span style="line-height:150%;font-family:楷体_GB2312;font-size:14pt;"></span> </p>
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