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Overlying strata subarea echelon differentiation grouting filling method
The invention discloses a subarea echelon differential grouting filling method for overlying strata. The method comprises the following steps that coring is conducted after construction, a mechanical test is conducted, and the position of a main key layer is determined; the plane position of a grouting hole is determined, an indoor simulation test is conducted according to the plane position of the grouting hole, and the filling material proportion of overlying strata subarea echelon grouting and the standing time T after grouting are determined; according to the material proportion in the second step, grouting is conducted through a grouting pump and the first layer of grouting drill holes; after the third step is completed, standing time is T, second-layer grouting drill holes are formed, second-layer grouting is conducted through a grouting pump and the second-layer grouting drill holes, and grouting filling operation is finished when grout precipitates in the caving zone to form a saturated compact. According to the method, the ultra-long drill hole can be used for multiple purposes, gradient layered grouting is achieved, the grouting settlement reducing effect is better, a slurry conveying pipeline is simpler, the filling cost is reduced, parallel operation of underground mining and ground grouting filling is achieved, mutual interference is avoided, and safe and green mining of coal is promoted.
本发明公开了一种覆岩分区梯次差异化注浆充填方法，包括以下步骤：施工后取芯做力学试验确定主关键层层位；确定注浆孔平面位置，根据注浆孔平面位置进行室内模拟试验，确定覆岩分区梯次注浆的充填材料配比以及注浆后的静置时间T；按照步骤二中的材料配比，通过注浆泵和第一层注浆钻孔进行注浆；步骤三完成后静置时间T，设置第二层注浆钻孔，通过注浆泵和第二层注浆钻孔进行第二层注浆，浆液在垮落带沉淀形成饱和压实体时注浆充填作业结束。本发明能够使超长钻孔一孔多用，梯次分层注浆，注浆减沉效果更佳，输浆管路更加简单，缩减了充填成本，实现了地下开采与地面注浆充填平行作业，互不干扰，促进煤炭安全绿色开采。
Overlying strata subarea echelon differentiation grouting filling method
The invention discloses a subarea echelon differential grouting filling method for overlying strata. The method comprises the following steps that coring is conducted after construction, a mechanical test is conducted, and the position of a main key layer is determined; the plane position of a grouting hole is determined, an indoor simulation test is conducted according to the plane position of the grouting hole, and the filling material proportion of overlying strata subarea echelon grouting and the standing time T after grouting are determined; according to the material proportion in the second step, grouting is conducted through a grouting pump and the first layer of grouting drill holes; after the third step is completed, standing time is T, second-layer grouting drill holes are formed, second-layer grouting is conducted through a grouting pump and the second-layer grouting drill holes, and grouting filling operation is finished when grout precipitates in the caving zone to form a saturated compact. According to the method, the ultra-long drill hole can be used for multiple purposes, gradient layered grouting is achieved, the grouting settlement reducing effect is better, a slurry conveying pipeline is simpler, the filling cost is reduced, parallel operation of underground mining and ground grouting filling is achieved, mutual interference is avoided, and safe and green mining of coal is promoted.
本发明公开了一种覆岩分区梯次差异化注浆充填方法，包括以下步骤：施工后取芯做力学试验确定主关键层层位；确定注浆孔平面位置，根据注浆孔平面位置进行室内模拟试验，确定覆岩分区梯次注浆的充填材料配比以及注浆后的静置时间T；按照步骤二中的材料配比，通过注浆泵和第一层注浆钻孔进行注浆；步骤三完成后静置时间T，设置第二层注浆钻孔，通过注浆泵和第二层注浆钻孔进行第二层注浆，浆液在垮落带沉淀形成饱和压实体时注浆充填作业结束。本发明能够使超长钻孔一孔多用，梯次分层注浆，注浆减沉效果更佳，输浆管路更加简单，缩减了充填成本，实现了地下开采与地面注浆充填平行作业，互不干扰，促进煤炭安全绿色开采。
Overlying strata subarea echelon differentiation grouting filling method
一种覆岩分区梯次差异化注浆充填方法
YANG KE (author) / YUAN LIANG (author) / ZHANG JIQIANG (author) / HE XIANG (author) / LIU SHUAI (author) / CHI XIAOLOU (author) / LYU XIN (author) / WEI ZHEN (author) / YU XIANG (author) / JI JIANSHUAI (author)
2022-04-26
Patent
Electronic Resource
Chinese
IPC:
E21F
Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels
,
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
/
C04B
Kalk
,
LIME
/
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
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