岩浆侵入破碎顶板条件下放水孔的安全封孔

Security hole sealing of drainage hole under the condition of magma intrusion broken roof

受大面积岩浆侵入影响,煤层顶板裂隙发育、顶板破碎,放水孔在试压时,周边锚杆、锚索孔全部跑水,利用"低压注浆封堵大裂隙、加入充填物高压注浆封堵固管"的新工艺,实现钻孔的安全封孔。

Due to inlfuence of the large area magma intrusion , the seam roof fracture is rich , the roof is broken, in the pressure test of water holes, running water from all around the bolt and anchor hole, using the new technology , sealing large cracks by the low pressure grouting, adding iflling by high pressure grouting to ifx pipe , and realized safe sealing hole drilling.