朱庄煤矿Ⅲ628工作面改底板含水层为隔水层技术

Technology to reform water bearing layer floor to water isolated layer floor for Ⅲ628 coal mining face in Zhuzhuang Mine

以朱庄煤矿Ⅲ628工作面底板灰岩含水层改为隔水层为例,介绍了防治底板承压水注浆加固的钻探和注浆工艺。钻探施工,注浆加固,将6煤底板以下52~58m改造为隔水层,钻孔以斜孔为主,使钻孔揭露的含水层段尽量长,以增加注浆量,注浆工程采用地面注浆,注浆采取高标号水泥,高压稀浆,连续注浆方式进行的,提高浆液扩散半径,增加注浆量都有积极的作用。注浆后进行了二次电法检查,透孔注水检查注浆效果以及取芯验证注浆质量等。

Taking a limestone water bearing layer floor reformed to a water isolated layer floor of Ⅲ628 coal mining face in Zhuzhuang Mine as an example, the paper introduced the drilling and grouting technology to grouting and reinforcing the floor for prevention and control the pressurized water in the face floor.The drilling operation and the grouting reinforcement were to reform the water bearing layer to a water isolated layer which was 52 to 58 m below the No.6 seam floor.The drilling boreholes were mainly incl...