CAJ | 학술논문

煤层瓦斯压力测定是煤矿安全生产基础参数测定的重要内容之一，测压成功的关键是封孔技术。当围岩裂隙较发育时需要采用压力注浆封孔，注浆压力就成为封孔的技术关键。为了确定一定围岩岩性条件下的合理封孔注浆压力，采用数值模拟的方法对测压钻孔塑性区大小进行了仿真模拟，并根据浆液渗流规律和钻孔围岩性质之间的关系建立了浆液流动数学模型，得出了合理的注浆压力为4MPa，结合新型“两堵一注”囊袋式封孔装置与CPD8M型煤层瓦斯压力自动测定仪进行了现场应用，结果表明4MPa的注浆压力满足平煤十三矿试验现场围岩条件下的封孔要求，对同类条件下瓦斯压力测定具有一定的指导意义。
매층와사압력측정시매광안전생산기출삼수측정적중요내용지일，측압성공적관건시봉공기술。당위암렬극교발육시수요채용압력주장봉공，주장압력취성위봉공적기술관건。위료학정일정위암암성조건하적합리봉공주장압력，채용수치모의적방법대측압찬공소성구대소진행료방진모의，병근거장액삼류규률화찬공위암성질지간적관계건립료장액류동수학모형，득출료합리적주장압력위4MPa，결합신형“량도일주”낭대식봉공장치여CPD8M형매층와사압력자동측정의진행료현장응용，결과표명4MPa적주장압력만족평매십삼광시험현장위암조건하적봉공요구，대동류조건하와사압력측정구유일정적지도의의。
Coal seam gas pressure measurement is an important part of the basic parameter determination of safety production in coal mine , the key to successful manometry is sealing technology .When the surrounding rock fracture is developed by using pressure grouting hole needs , grouting pressure has become the key technology of hole seal-ing.In order to determine a reasonable hole sealing grouting pressure of surrounding rock lithology conditions , u-sing numerical simulation method to pressure hole the size of the plastic zone is simulated , and the establishment of slurry flow mathematical model according to the relationship between the flow of slurry and drilling properties of sur -rounding rock, grouting pressure obtained reasonable 4MPa, combined with the new "two block a injection"bag type sealing device and CDP8M type coal gas pressure automatic measuring instrument for field application , the re-sults show that the grouting pressure 4 MPa meet thirteen min of Ping dingshan mining site test of surrounding rock conditions of sealing requirements , it has certain guiding significance for similar conditions of gas pressure determi-nation.