[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"news-1000000000000002623":3,"session-user":17,"\u002Fapi\u002Fnews\u002Flist?categoryId=1000000000000000014&orderByColumn=publishTime&isAsc=desc&pageSize=5":18},{"id":4,"articleNo":5,"categoryId":6,"categoryName":7,"title":8,"summary":9,"content":10,"publishTime":11,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":13,"collectCount":14,"updateTime":15,"contentHtml":16},"1000000000000002623","q624","1000000000000000014","场地调查","关于监测井的问题，如何避免‘垃圾进、垃圾出’？对于现有场地那些不合格的监测井，是封井重打，还是有什么补救校准的手段？","在很多历史遗留场地发现，早期建的监测井因为建井材料不合格、滤料填充不到位，或者井深没打到目的层，导致出来的数据根本不代表真实的水质状况。在调查阶段，如何避免‘垃圾进、垃圾出’？对于现有场地那些不合格的监测井，是封井重打，还是有什么补救校准的手段？","**在很多历史遗留场地发现，早期建的监测井因为建井材料不合格、滤料填充不到位，或者井深没打到目的层，导致出来的数据根本不代表真实的水质状况。在调查阶段，如何避免‘垃圾进、垃圾出’？对于现有场地那些不合格的监测井，是封井重打，还是有什么补救校准的手段？**\n\n从实际历史遗留场地勘查实操和现行有效生态环境技术规范来看，早期老旧监测井普遍存在建井管材非标、滤料级配不合格且填充不密实、未做分层止水、井深未击穿目标含水地层等通病，极易引发含水层串层混采、地表径流沿井壁下渗、井管与原位含水层水力连通不畅，直接导致监测水样不具备原位代表性，出现典型的垃圾进、垃圾出数据失真问题。\n\n场地调查阶段要从源头规避这类问题，严格依据建设用地土壤地下水调查、地下水监测现行有效技术规范要求，先查清场地水文地质结构再科学布设井位、核定合理井深；全过程采用专用合规井管、标准级配滤料和膨润土止水材料，严格执行分层成井、分层止水，杜绝一井跨多层混采；成井后规范洗井，待现场水文水质参数稳定、水体平衡后再采样，同步落实现场平行样、空白样等全流程质控，从设计、选材、成井到采样全链条守住数据真实性。\n\n对现存不合格老旧监测井，先做现场水文地质与井体结构研判：井深到位、井管完好、无明显串层，仅存在泥皮淤堵、滤料堵塞、井口防渗失效的，可通过复洗井、疏通孔壁、重新井口防渗封堵、加装分层隔离套管做整改修复，再和新建合规监测井开展同期比对监测，验证稳定后可审慎沿用；若井深未到达目的监测层位、无有效分层止水造成上下含水层串层、井管破损变形坍塌、滤料严重流失，且经整改后水质数据仍明显偏离区域水文地质背景规律的，不具备修复复用价值，需按现行废弃井封填处置要求分层密实封井，避免老旧废井形成垂向污染通道，再按规范重新布设新建监测井，保障场地调查、污染溯源与风险评估的数据可靠有效。","2026-04-27T15:49:30+08:00","N",71,0,"2026-04-28T18:01:22+08:00","\u003Cp>\u003Cstrong>在很多历史遗留场地发现，早期建的监测井因为建井材料不合格、滤料填充不到位，或者井深没打到目的层，导致出来的数据根本不代表真实的水质状况。在调查阶段，如何避免‘垃圾进、垃圾出’？对于现有场地那些不合格的监测井，是封井重打，还是有什么补救校准的手段？\u003C\u002Fstrong>\u003C\u002Fp>\n\u003Cp>从实际历史遗留场地勘查实操和现行有效生态环境技术规范来看，早期老旧监测井普遍存在建井管材非标、滤料级配不合格且填充不密实、未做分层止水、井深未击穿目标含水地层等通病，极易引发含水层串层混采、地表径流沿井壁下渗、井管与原位含水层水力连通不畅，直接导致监测水样不具备原位代表性，出现典型的垃圾进、垃圾出数据失真问题。\u003C\u002Fp>\n\u003Cp>场地调查阶段要从源头规避这类问题，严格依据建设用地土壤地下水调查、地下水监测现行有效技术规范要求，先查清场地水文地质结构再科学布设井位、核定合理井深；全过程采用专用合规井管、标准级配滤料和膨润土止水材料，严格执行分层成井、分层止水，杜绝一井跨多层混采；成井后规范洗井，待现场水文水质参数稳定、水体平衡后再采样，同步落实现场平行样、空白样等全流程质控，从设计、选材、成井到采样全链条守住数据真实性。\u003C\u002Fp>\n\u003Cp>对现存不合格老旧监测井，先做现场水文地质与井体结构研判：井深到位、井管完好、无明显串层，仅存在泥皮淤堵、滤料堵塞、井口防渗失效的，可通过复洗井、疏通孔壁、重新井口防渗封堵、加装分层隔离套管做整改修复，再和新建合规监测井开展同期比对监测，验证稳定后可审慎沿用；若井深未到达目的监测层位、无有效分层止水造成上下含水层串层、井管破损变形坍塌、滤料严重流失，且经整改后水质数据仍明显偏离区域水文地质背景规律的，不具备修复复用价值，需按现行废弃井封填处置要求分层密实封井，避免老旧废井形成垂向污染通道，再按规范重新布设新建监测井，保障场地调查、污染溯源与风险评估的数据可靠有效。\u003C\u002Fp>\n",null,{"items":19,"total":47,"pageNum":48,"pageSize":49},[20,21,28,35,41],{"id":4,"articleNo":5,"categoryId":6,"categoryName":7,"title":8,"summary":9,"publishTime":11,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":13,"collectCount":14,"updateTime":15},{"id":22,"articleNo":23,"categoryId":6,"categoryName":7,"title":24,"summary":25,"publishTime":26,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":27,"collectCount":14,"updateTime":26},"1000000000000002614","q615","很多场地只做一轮采样就圈定污染羽，怎么判断监测井数量和监测周期是足够的，而不是刚好 “碰巧没采到超标点”？","很多场地只做一轮采样就圈定污染羽，怎么判断监测井数量和监测周期是足够的，而不是刚好 “碰巧没采到超标点”？？","2026-04-12T15:17:00+08:00",74,{"id":29,"articleNo":30,"categoryId":6,"categoryName":7,"title":31,"summary":32,"publishTime":33,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":34,"collectCount":14,"updateTime":33},"1000000000000002609","q610","污染场地责任划分、追溯和修复资金，目前行业内是怎么操作的？","污染场地责任划分、追溯和修复资金，目前行业内是怎么操作的？？","2026-04-08T22:43:33+08:00",82,{"id":36,"articleNo":37,"categoryId":6,"categoryName":7,"title":38,"summary":38,"publishTime":39,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":40,"collectCount":14,"updateTime":39},"1000000000000002411","q412","拆分地块是否可以整个地块都先交代下，然后交代哪些区域潜在污染，只针对潜在污染的区域进行调查？","2023-05-03T20:05:11+08:00",1189,{"id":42,"articleNo":43,"categoryId":6,"categoryName":7,"title":44,"summary":44,"publishTime":45,"isTop":12,"isHot":12,"isRecommend":12,"viewCount":46,"collectCount":14,"updateTime":45},"1000000000000002410","q411","拆分多个地块是依据现场调查情况，自己划定吗？","2023-05-02T18:15:40+08:00",1165,76,1,5]