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target="_blank">排水?/a>施工要点</a>QPE道施工除了(jin)Ҏ(gu)施工规范实施PE道?q应注意以下几点:PE的热膨胀和收~很严重,所以PE应该构造ƈ使用在环境中,其中温差不会(x)有太大变?</span><br /> <span style="font-family:SimSun;font-size:16px;">    当P(yng)E的埋深低于l构基础的底面时,道不应位于l构基础的基扩散角内.</span><br /> <span style="font-family:SimSun;font-size:16px;">    在地下水位高于沟渠底部的地区,C水位降至更低点以?.3?.5c?</span><br /> <p> <span style="font-family:SimSun;font-size:16px;">    挖掘沟渠?应严格控制开挖深?不应CؕC室底部未受干扰的土壤.如果发生q度挖掘和扰?应更换和调^_度?.1 m?.5 m的天然砂和砄. PE道基础采用砄基础代替混凝土基,HDPE道l化,厚度?.05 m~20 m,视地质条件而定.</span> </p> <p style="text-align:center;"> <span style="font-family:SimSun;font-size:16px;"></span><img src="/uploads/image/20200220/20200220143447_6100.jpg" alt="贵州PE?jng)政排水? width="400" height="300" title="贵州PE?jng)政排水? align="" /> </p> <span style="font-family:SimSun;font-size:16px;">    道q程?下管道用手或起重?当v重机在管道下Ҏ(gu),使用非金属线管道末端连接到喷嘴?/4?</span><br /> <span style="font-family:SimSun;font-size:16px;">    回填中回填要求严?一些回填材料用一些规格的?_??当地UCؓ(f)x?.砄(土壤)的坚角落很Ҏ(gu)损坏PE?回填不易致密.x砂在含水量方面具有自动压实功?压实机可满紧凑性要?</span><br /> <span style="font-family:SimSun;font-size:16px;">    使用机械回填填充0.7cx更大道的顶?</span><br /> <span style="font-family:SimSun;font-size:16px;">    必须从管道的两侧回填道剙的回填ƈ压实HDPE道.否则,PE将不均匀,PE将变Ş和移?Ҏ(gu)规格q行其他回填.道q接?a href="http://bjjhd.cn/supply/51.html" target="_blank">(g)查井</a>.在原始结构方案中,喷嘴~回到检查井的内?.3?.5c?q用砂浆施加一?喇叭".周围地区充满?jin)砂ƈ压?砖砌成后,闭水试验不能满?(g)查中存在以下问题:HDPE热胀L(fng)?yu)检查井撑裂,D(g)查井渗漏?</span><br /> <span style="font-family:SimSun;font-size:16px;">    没有检查井撑裂,却由于管道与(g)查井q接处密达不到要求,D渗、漏?</span><br /> <span style="font-family:SimSun;font-size:16px;">    对于上述两个问题,采用以下解决Ҏ(gu):增加HDPE的埋深,使HDPE的温度变化为环?温度变化相对较小,后立卛_填HDPE?q且短时间执?施工长度控制在一定范围内.</span><br /> <span style="font-family:SimSun;font-size:16px;">    (g)查井与HDPE连接处采用热熔U维密封,取代原来的砂填塞密?</span><br /> </div> <div id="qbzcjc8" class="pagess"> <ul> <div>上一?<a href="95.html">贵阳水惔排水的环保要求有哪?</a></div> <div>下一?<a href="93.html">贵州水惔在应注意的问题</a></div> </ul> </div> <div id="9a8er32" class="info_key"> <span>此文关键字:(x)</span> <a href='/key.aspx?k=%e8%b4%b5%e5%b7%9ePE%e5%b8%82%e6%94%bf%e6%8e%92%e6%b0%b4%e7%ae%a1'>贵州PE?jng)政排水?/a>, </div> </div> <div id="i8iszky" class="clear"></div> <div id="npuxnp8" class="cateslist xgxinwen"> <dl> <dt>相关新闻</dt> <dd> <div id="v81ji83" class="txt xiangguan-x"><a href="/news/94.html" title="贵州PE?jng)政排水施工要?>贵州PE?jng)政排水施工要?/a></div> </dd> </dl> </div> <div id="lulncvs" class="cateslist xgtupian"> <dl> <dt>相关囄</dt> </dl> </div> </div> </div> </div> <div id="ajqjor2" 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