9444材料道区域防突措施及钻孔施工安全技术措施999

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1、9444材料道掘进工作面区域防突措施及钻孔施工安全技术措施9444材料道即将掘进至7444跳面煤柱区段，根据工作面实际情况及7煤保护范围，9444材料道在掘进进、出跳面煤柱前后20m范围内未在7煤开采的保护范围内，需严格执行“双四位一体”综合防突措施，根据我矿实际情况，采用顺层钻孔预抽煤巷条带煤层瓦斯区域防突措施消除掘进期间突出危险性。9444工作面煤层倾角20°，根据《防治煤与瓦斯突出规定》要求，顺层钻孔控制在巷道轮廓线外15m，钻孔投影长度不低于80m，预留20m超前距，允许进尺60m，抽采半径取1.5m。经计算，第一循环需在9444材料道掘进工作面迎头布置32个

2、钻孔，第二循环及该掘进工作面过跳面煤柱之前循环根据搭茬20m的实际情况布置22个钻孔，设计如下：一、钻孔施工参数及钻孔布置图（一）、钻孔参数1、使用机具：CMS1-4200/80型煤矿用深孔钻车及配套肋骨钻杆2、孔径：Φ113mm3、长度：深孔投影孔深不低于80m4、位置：布置双排钻孔5、间距：预抽钻孔开孔点间距0.4m6、钻孔：第一循环施工2排32个钻孔第二循环中间施工2排，两边1排22个钻孔7、施工参数见表1、2（二）、钻孔布置图66表1区域防突措施孔参数表(第一循环)孔号孔径（mm）钻孔开孔位置巷中夹角（°）左+右-倾角（°）仰+俯-孔深（m）距底板高度（m）距

3、中线（m）左+右-11130.2-3.0-65.62-4.3422.0221130.7-3.0-57.77-4.3423.7131130.4-2.6-50.48-4.3426.0041130.9-2.6-43.84-4.3428.9651130.6-2.2-37.87-4.3432.6761131.1-2.2-32.59-4.3437.2471130.8-1.8-27.95-4.3442.7981131.3-1.8-23.92-4.3449.4691131.0-1.4-20.44-4.3457.45101131.5-1.4-17.43-4.3466.95111131.

4、2-1-10.62-4.3481.66121131.7-1-8.70-3.5881.09131131.4-0.6-6.90-2.7980.68141131.9-0.6-4.83-2.0080.33151131.6-0.2-3.01-1.2180.13161132.1-0.2-0.91-0.1080.12171131.80.20.910.4080.01181132.30.23.011.2180.12191132.00.64.832.0080.33201132.50.66.902.7980.68211132.21.08.703.5881.09221132.71.010.6

5、24.3481.66231132.41.417.434.3466.95241132.91.420.444.3457.45251132.61.823.924.3449.46261133.11.827.954.3442.79271132.82.232.594.3437.24281133.32.237.874.3432.67291133.02.643.844.3428.96301133.52.650.484.3426.00311133.23.057.774.3423.71321133.73.065.624.3422.02表2区域防突措施孔参数表(后期循环)孔号孔径（mm）钻

6、孔开孔位置巷中夹角（°）左+右-倾角（°）仰+俯-孔深（m）距底板高度（m）距中线（m）左+右-11131.1-2.2-32.59-4.3437.2421130.8-1.8-27.95-4.3442.7931131.3-1.8-23.92-4.3449.46641131.0-1.4-20.44-4.3457.4551131.5-1.4-17.43-4.3466.9561131.2-1-10.62-4.3481.6671131.7-1-8.70-3.5881.0981131.4-0.6-6.90-2.7980.6891131.9-0.6-4.83-2.0080.3310

7、1131.6-0.2-3.01-1.2180.13111132.1-0.2-0.91-0.1080.12121131.80.20.910.4080.01131132.30.23.011.2180.12141132.00.64.832.0080.33151132.50.66.902.7980.68161132.21.08.703.5881.09171132.71.010.624.3481.66181132.41.417.434.3466.95191132.91.420.444.3457.45201132.61.823.924.3449.46211133