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山东石膏矿坍塌事发矿企系暗中作业 曾被令停产

2015-12-26 08:16:54   京华时报

据现场最新消息,截至昨天19时30分许,又有6名被困人员获救,仍有19人被困井下。

据悉,事故发生后,国家安监总局相关专家已赶赴现场指导救援。

影响

引发4.0级地震多列火车晚点

昨天上午8时12分,中国地震台网速报发布消息称,12月25日7时56分在山东省临沂市平邑县(北纬35.5度,东经117.7度)发生4.0级地震,震源深度10千米。

昨天上午11时41分,中国地震台网更正消息称,经过认真分析,并结合现场情况,确定本次事件非天然地震,是由塌陷引发的,震动相当于4.0级地震。塌陷地震是地下岩洞塌陷、大型山崩或矿井顶部塌陷引起的地震,影响范围及危害一般较小,在速报时震源深度一般按照0公里处理。

随后,济南铁路局官微发布消息称,受地震影响,目前铁路部门正在对铁路线路及设备进行检查,除影响5趟列车晚点外,预计另外3趟列车也将晚点。

昨天下午1时40分,济南铁路局官微续报运输资讯称,经铁路部门对受地震影响的线路设备进行全面检查,12时01分线路恢复正常运行,8趟列车晚点运行。

调查

当地已知潜在塌陷区且有规划

根据平邑县政府官网公开资料,平邑县是矿产资源大县,而石膏矿属于优势资源,储量在山东省排名第二。2007年,平邑县曾经做过一次统计,当时一共有150家矿山企业,地下开采的矿山有18家,其中16家都是石膏矿企业。截至当年,已经有10多家矿山发生了地面塌陷以及地裂缝等地质灾害,总塌陷面积有15.83公顷,塌陷的深度大多在0.5米到5米之间。另外,石膏开采形成的地下采空区一共有79.2公顷,都是潜在的塌陷区。

应该说,当地政府其实已经意识到了采空区塌陷的危害和威胁,而且也制定了相关的计划。2011年出台的一个平邑县矿产资源总体规划,当中就已经明确提到,到2015年,也就是今年,要建成覆盖全县生产和闭坑矿山的立体监测网络,其中特别提到要加强对石膏矿地质灾害的监测,监测的频率应该达到每个月1次,主要的监测项目是塌陷、下沉量还有建筑物的开裂情况。规划中还提到在出现异常情况的时候,要及时组织受威胁人员安全转移。

事发矿区采空区达20万平方米

平邑县安监局局长告诉记者,此次坍塌的废弃矿目前不属于他们的监管范围,受牵连的采矿区归他们监管,但在事故发生的一瞬间,采矿区的警报器就被震坏了,所以他们也没有办法在事故发生前就得到准确的消息。

据了解,事故发生的采矿区整个面积1平方公里,采空区就有20万平方米。在今年10月22日,当地安监部门就已经下达了通知,要求整个平邑县所有的这种采矿企业都要停止生产,进行整顿和改造。事发矿企因存在一定的安全隐患,也被安监部门勒令停产。11月7日,安监部门还对这个矿企进行过巡检,当时其表示已经停产。此次发生事故,应该是偷偷下井作业。

责任编辑:张晓伟 CN042
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