Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Coal mine end-mining working face rib caving pre-treatment process
The invention provides a coal mine end-mining working face rib caving pre-treatment process, which relates to the technical field of mineral engineering, and comprises the following steps: step 1, selecting a drilling grouting position in a coal body fracture hyperplasia area influenced by support pressure of an advanced working face, and implementing high-pressure grouting; 2, grouting holes are evenly formed in the waist lines of the coal walls of the two crossheads of the working face in a single row, the distance between the drilled holes and the bottom is 2-3 m, the distance is 3-10 m, drilling construction is conducted at a near-horizontal angle, the final hole position is close to the transverse center face of a coal body and a coal seam top plate, and the drilled holes of the two crossheads are formed at intervals; 3, distributing pipes in the coal body; according to the method, a mode of high-pressure grouting of the superfine-particle-size grouting material in the fracture hyperplasia area of the advanced working face is adopted, the coal body fracture is specifically filled and bonded in the early stage of coal body fracture development, reinforcement of the coal body is achieved, and the problem of wall caving of the coal wall in end mining propulsion of the working face is prevented; the construction amount is small, the construction process is convenient, working face stoping is not affected, and the reinforcing treatment effect is remarkable.
本发明提供了一种煤矿末采工作面片帮预治理工艺，涉及矿业工程技术领域，包括以下步骤：步骤一：在超前工作面支撑压力影响的煤体裂隙增生区选择钻孔注浆位置，实施高压灌注；步骤二：在工作面两顺槽煤壁腰线处单排均匀布置注浆孔，钻孔距底2‑3m，间距3‑10m，近水平角度钻孔施工，终孔位置靠近煤体横向中心面和煤层顶板，两顺槽钻孔间隔布置；步骤三：在煤体内布管；本发明采用在超前工作面的裂隙增生区高压灌注超细粒径注浆材料的方式，在煤体裂隙发育早期针对性的对其充填、粘结，实现煤体的补强加固，预防工作面末采推进中煤壁的片帮问题，提前预注的方式，施工量小、施工过程便捷、不影响工作面回采，补强治理效果显著。
Coal mine end-mining working face rib caving pre-treatment process
The invention provides a coal mine end-mining working face rib caving pre-treatment process, which relates to the technical field of mineral engineering, and comprises the following steps: step 1, selecting a drilling grouting position in a coal body fracture hyperplasia area influenced by support pressure of an advanced working face, and implementing high-pressure grouting; 2, grouting holes are evenly formed in the waist lines of the coal walls of the two crossheads of the working face in a single row, the distance between the drilled holes and the bottom is 2-3 m, the distance is 3-10 m, drilling construction is conducted at a near-horizontal angle, the final hole position is close to the transverse center face of a coal body and a coal seam top plate, and the drilled holes of the two crossheads are formed at intervals; 3, distributing pipes in the coal body; according to the method, a mode of high-pressure grouting of the superfine-particle-size grouting material in the fracture hyperplasia area of the advanced working face is adopted, the coal body fracture is specifically filled and bonded in the early stage of coal body fracture development, reinforcement of the coal body is achieved, and the problem of wall caving of the coal wall in end mining propulsion of the working face is prevented; the construction amount is small, the construction process is convenient, working face stoping is not affected, and the reinforcing treatment effect is remarkable.
本发明提供了一种煤矿末采工作面片帮预治理工艺，涉及矿业工程技术领域，包括以下步骤：步骤一：在超前工作面支撑压力影响的煤体裂隙增生区选择钻孔注浆位置，实施高压灌注；步骤二：在工作面两顺槽煤壁腰线处单排均匀布置注浆孔，钻孔距底2‑3m，间距3‑10m，近水平角度钻孔施工，终孔位置靠近煤体横向中心面和煤层顶板，两顺槽钻孔间隔布置；步骤三：在煤体内布管；本发明采用在超前工作面的裂隙增生区高压灌注超细粒径注浆材料的方式，在煤体裂隙发育早期针对性的对其充填、粘结，实现煤体的补强加固，预防工作面末采推进中煤壁的片帮问题，提前预注的方式，施工量小、施工过程便捷、不影响工作面回采，补强治理效果显著。
Coal mine end-mining working face rib caving pre-treatment process
一种煤矿末采工作面片帮预治理工艺
MA JINQIN (Autor:in) / HARA KOJI (Autor:in) / TAO GUANGMEI (Autor:in) / MA SAI (Autor:in) / ZHU YONGHUI (Autor:in) / WANG MENG (Autor:in) / CHEN ZHIQIANG (Autor:in) / WANG PENGWEI (Autor:in) / ZHAO BIN (Autor:in) / WANG SHUAI (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
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