大型烧变岩帷幕预注浆工程的即时检验技术
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摘要
为了研究张家峁煤矿4~(-2)煤烧变岩帷幕预注浆工程的效果即时检验方法,评价了钻孔注浆结束标准,分析了帷幕注浆对帷幕带和火烧区的影响,根据烧变岩裂隙发育特征和帷幕工程特点,提出了从"一带两区"的帷幕带烧变岩受注介质变化和帷幕内外水文地质单元差异两个方面进行检验,烧变岩受注介质变化可通过钻探揭露和注浆反馈进行分析,帷幕内外水文地质单元差异可通过帷幕内外钻孔水位和泉流变化进行对比。工程实践证明,以上即时检验方法思路正确,结论可靠。
In order to study the method of immediate inspection on the pre-grouting engineering effect of 4(-2) coal burnt rock curtain in Zhangjiaomao Coal Mine,we evaluate the existing single hole grouting end standard,and analyze the influence of curtain grouting on the curtain belt and burnt area. According to the characteristics of fracture development and curtain engineering,it is proposed to examine the variation of the injected medium and the difference of hydrogeological units inside and outside the curtain from two aspects of one band and two zones. The variation of injected medium can be analyzed by drilling and grouting feedback,and the difference of hydrogeological units inside and outside the curtain can be compared by the variation of water level and spring flow inside and outside the curtain. Engineering practice proves that the instant inspection methods is reasonable and the conclusion is reliable.
In order to study the method of immediate inspection on the pre-grouting engineering effect of 4(-2) coal burnt rock curtain in Zhangjiaomao Coal Mine,we evaluate the existing single hole grouting end standard,and analyze the influence of curtain grouting on the curtain belt and burnt area. According to the characteristics of fracture development and curtain engineering,it is proposed to examine the variation of the injected medium and the difference of hydrogeological units inside and outside the curtain from two aspects of one band and two zones. The variation of injected medium can be analyzed by drilling and grouting feedback,and the difference of hydrogeological units inside and outside the curtain can be compared by the variation of water level and spring flow inside and outside the curtain. Engineering practice proves that the instant inspection methods is reasonable and the conclusion is reliable.
引文
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[2]刘生优.骆驼山煤矿16煤大巷奥灰突水封堵工程设计[J].煤炭工程,2011,43(10):37-39.
[3]关永强,王铁记,岳卫振.牛儿庄矿奥灰特大溃水灾害的治理研究[J].中国煤炭地质,2006,18(3):37-39.
[4]郑士田.地面定向钻进技术在煤矿陷落柱突水防治中的应用[J].煤炭科学技术,2018,46(7):229-233.
[5]杨志斌,董书宁.动水大通道突水灾害治理关键技术[J].煤炭科学技术,2018,46(4):110-116.
[6]赵庆彪.奥灰岩溶水害区域超前治理技术研究及应用[J].煤炭学报,2014,39(6):1112-1117.
[7]石志远.地面顺层钻进在煤层底板高压岩溶水害区域超前治理中的应用[J].煤矿安全,2015,46(S1):67-70,75.
[8]李长青,安许良,孙晓宇.地面定向水平孔煤层底板超前注浆防治水技术研究[J].煤炭工程,2017,49(9):19-22
[9]姬中奎.导水陷落柱的注浆预治理[J].西部探矿工程,2007,19(11):124-128.
[10]南生辉.邯邢矿区奥陶系灰岩上部注浆改造技术[J].煤田地质与勘探,2010,38(3):37-40.
[11]黄小广.注浆效果检测方法的评价[J].煤矿安全,2001(10):38-39.
[12]张旭东.岩溶隧道帷幕注浆施工技术标准的探讨[J].铁道标准设计,2005(1):15-17.
[13]杜中宁,党学亚,卢娜.陕北能源化工基地烧变岩的分布特征及水文地质意义[J].地质通报,2008,27(8):1168-1172.
[14]范立民.生态脆弱区烧变岩研究现状及方向[J].西北地质,2010,43(3):58-65.