WO2018192067A1 - 一种煤层为主含水层矿井的水害防治设计方法 - Google Patents

一种煤层为主含水层矿井的水害防治设计方法 Download PDF

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WO2018192067A1
WO2018192067A1 PCT/CN2017/087330 CN2017087330W WO2018192067A1 WO 2018192067 A1 WO2018192067 A1 WO 2018192067A1 CN 2017087330 W CN2017087330 W CN 2017087330W WO 2018192067 A1 WO2018192067 A1 WO 2018192067A1
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water
working
drainage
working surface
working face
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PCT/CN2017/087330
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English (en)
French (fr)
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巨峰
肖猛
李百宜
郭帅
裴玉龙
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中国矿业大学
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Priority to RU2019136167A priority Critical patent/RU2729291C1/ru
Priority to AU2017410433A priority patent/AU2017410433B2/en
Publication of WO2018192067A1 publication Critical patent/WO2018192067A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00—Drainage
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation

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  • the invention relates to a mine water damage prevention design method, in particular to a coal seam main aquifer mine water damage prevention design method suitable for use in coal mine underground waterproof damage.
  • the purpose of the present invention is to provide a method for designing a mine water damage control system for a coal seam with a simple step, accurate identification, and effective reduction of mine water damage.
  • the coal seam is the main aquifer, which is the special mining and prevention of water inrush caused by special hydrogeology. It provides a design method for water disaster prevention and control of coal seam as the main aquifer mine.
  • the coal seam of the present invention is a method for preventing and controlling water damage in a mine face of a main aquifer, and the steps are as follows:
  • the conventional water control technology is used to advance the water prevention and control capacity of the water in the goaf.
  • the working capacity of the working surface drainage system is judged to be 100-150 m 3 /h. If the working capacity of the current working surface drainage system is less than the value, the required displacement of the current working surface is calculated and the drainage equipment is replaced; If the working capacity is greater than this value, it is necessary to further check whether the working state of the working face drainage system is normal.
  • the working condition of the working surface drainage system is judged as whether there is a fault. If the drainage system has no fault, the working surface can be normally constructed; if there is a fault in the drainage system, an early warning is issued, and the working surface drainage capacity guarantee work is performed.
  • the working surface It is judged whether the local slanting of the working surface exists. If there is no local slanting of the working surface, the working surface can be normally constructed; if there is a partial slanting of the working surface, it is necessary to further judge the local slanting position of the working surface and the expected exposure length is greater or less than Determine the standard value.
  • the criterion value of the oblique position and the estimated exposure length is 50-100 m. If the estimated length of the oblique inclination is less than the value, the working surface can be normally constructed; if the predicted length of the oblique inclination is greater than the value, an early warning is issued and Work area drainage capacity accounting and guarantee work.
  • the position of the roof scouring area and the estimated length of the exposed surface are 50-100 m. If the expected length of the roof scouring area is less than the value, the working surface can be normally constructed; if the expected length of the roof scouring area is greater than the value, an early warning is performed. And work area drainage capacity accounting and security work.
  • the working surface can be normally constructed; if the advanced drainage has not been carried out, an early warning is issued, and the advanced drainage and acceptance work is carried out.
  • the present invention solves the problem of prevention and control of water damage in the main aquifer of coal seam by using multi-disciplinary crossover existing technology, and can provide various early warning forms of water inrush, which can reduce losses caused by dangerous events of mine water disasters, and even reduce the cause
  • the casualties caused by dangerous events in mine water disasters fill the gaps in the design method of water damage prevention under the special geological conditions of coal seams as the main aquifer; the invention determines the selection and selection of water prevention measures by collecting detailed information of the working face.
  • Excavation in water-bearing coal seams The mining system provides an early warning system and corresponding countermeasures, which provides a guarantee for safe excavation and mining.
  • the invention is an effective means for solving the prevention and control of coal seam main aquifer water damage, the method is simple and linear, the scheme design is reasonable, the implementation cost is low, the actual operation Strong.
  • FIG. 1 is a flow chart of a water damage prevention design method for a coal seam main aquifer mine of the present invention.
  • the coal seam of the present invention is a method for preventing and controlling water damage in a mine face of a main aquifer, and the method comprises the following steps:
  • the working capacity of the working face drainage system is 100-150m 3 /h. If the working capacity of the current working face drainage system is less than this value, the current calculation is required. The required displacement of the working face and the replacement of the drainage equipment; if the working capacity of the working surface drainage system is greater than this value, it is necessary to further check whether the working condition of the working surface drainage system is normal, and determine whether there is a fault in the drainage system of the working surface. If the drainage system is not faulty, The working surface can be normally constructed; if there is a fault in the drainage system, an early warning is made, and the working surface drainage capacity guarantee work is performed, thereby obtaining the working capacity and state of the drainage system;
  • the working surface Judging the information of the roof surface of the working face, obtaining the information of the inclined position and the expected length of the exposure, and investigating whether there is a roof scouring area. If there is no roof scouring area, the working surface can be normally constructed; if there is a roof scouring area, it is required Further determining that the position of the roof scouring area and the estimated exposure length are greater than or less than the judgment standard value of 50-100 m, if the expected exposure length of the roof scouring area is less than the value, the working surface can be normally constructed; if the ceiling scouring area is expected to have a length greater than the value, then Early warning and work face Drainage capacity accounting and guarantee work;
  • the conventional water control technology is used to advance the water prevention and control capacity of the water in the goaf.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the mine mainly uses 2# coal seam.
  • the 2# coal seam is the main aquifer, and the buried depth is 350m.
  • There are many major water hazards in the working face mainly local inclined zone and Zhiluo group scouring zone, 2# coal seam water and roof water. When multiple water sources are combined, the water inflow from the excavation and mining face will increase to 110-160m.
  • the judgment module is used to select the corresponding water prevention measures, and the specific implementation is as follows:
  • the collecting object includes the working surface drainage system, the working face partial inclination, the working face roof scouring belt and the adjacent goaf;
  • the judgment criterion of the working capacity of the drainage system in the judgment module is 100-150 m 3 /h. If the working capacity of the drainage system of the 11213 tunneling face is less than the value, the drainage capacity calculation is required; if the working capacity of the drainage system of the working face is 11213 If it is greater than this value, it is necessary to further check the working state of the drainage system of the working face;
  • the working condition of the working surface drainage system is normal. If the drainage system of the 1113 heading face is working properly, the working face can be normally constructed; if the drainage system of the 11213 heading face is not working properly, an early warning is issued and Work surface drainage capacity guarantee work;
  • the judgment criterion of the partial deviation of the working face in the judgment module is whether there is a partial inclination of the working face. If there is no local slanting in the 11113 boring working face, the working surface can be normally constructed; if the 11213 boring working face has a local slanting , it is necessary to further judge the local oblique position of the working face and the expected length of exposure;
  • the judging position and the estimated uncovering length are judged to be 50-100 m. If the 11213 excavation working face is inclined to predict that the exposed length is less than the value, the working surface can be normally constructed; if the 11213 excavation working face is inclined, the expected exposing length is greater than the value. , to provide early warning and to carry out the accounting and guarantee work of the drainage surface of the working face;
  • the judgment criterion of the roof scouring area in the judging module is whether there is a roof scouring area. If there is no roof scouring area in the 11113 boring working surface, the working surface can be normally constructed; if there is a roof scouring area in the 11213 boring working surface, further Judging the position of the roof scouring area and the estimated length of exposure;
  • the position of the roof scouring area and the estimated length of the exposed surface are 50-100m. If the expected length of the roof scouring area of the 11213 heading face is less than the value, the working surface can be normally constructed; if the 11213 boring face is expected to be flushed by the roof scouring area If the length of the exposure is greater than the value, an early warning is issued, and the drainage and capacity protection of the working face is carried out;
  • the judging criterion of the adjacent goaf is whether there is an adjacent goaf. If there is no adjacent goaf in the 11213 heading face, the working face can be normally constructed; if the 11213 heading face has adjacent goaf Zone, it is necessary to further judge the state of water accumulation in adjacent goafs;
  • the criterion for the state of water accumulation in the adjacent goaf is whether there is water in the adjacent goaf. If there is no water in the adjacent goaf in the 11213 heading face, the working face can be normally constructed; if the tunnel is drilled at 11213 If there is water in the adjacent goaf in the working face, it is necessary to further investigate the position of water in the adjacent goaf, the amount of water accumulated and the situation of advanced drainage;
  • the judging criteria for the advance clearance of the adjacent goaf are whether or not the lead has been advanced. If the advanced drainage has been carried out, the working surface can be normally constructed; if the lead has not been advanced, an early warning is issued and an early warning is made. Advance drainage and acceptance work.

Abstract

一种煤层为主含水层矿井工作面开采水害防治设计方法，通过判断工作面排水系统排水量，是否存在工作面局部向斜，是否存在工作面顶板冲刷带和相邻采空区，从而进行工作面的排水能力核算与保障和超前疏放采空区积水。该方法适用于煤矿井下使用，针对多个对象的信息采集结果，依据相应的判断标准，提出特定的防治水措施，能够提供多种突水形式的预警，可以减少因矿井水灾害危险事件导致的损失，甚至可以减少因矿井水灾害危险事件导致的人员伤亡。

Description

一种煤层为主含水层矿井的水害防治设计方法 技术领域
本发明是一种矿井水害防治设计方法，尤其是适用于煤矿井下防水害使用的煤层为主含水层矿井水害防治设计方法。
背景技术
我国矿山突水问题一直是制约矿山安全生产的重大技术难题。针对这一问题，国内外已形成了防水煤岩柱留设、疏干降压、岩层注浆改造等突水防治方法。煤层为主含水层的水文地质特征在煤矿中为首次发现，此类矿井水害防治技术国内外未见明确报道。
发明内容
技术问题：本发明目的是针对现有技术的不足之处，提供一种步骤简单，判别准确，有效降低矿井水害的煤层为主含水层矿井水害防治设计方法。
煤层为主含水层这一特殊水文地质所引起的安全开采与防治突水问题，提供一种煤层为主含水层矿井的水害防治设计方法。
技术方案：本发明的煤层为主含水层矿井工作面开采水害防治方法，包括步骤如下：
a.采集开采工作面的基本信息，包括工作面排水系统信息、工作面局部向斜信息、工作面顶板冲刷带状态和相邻采空区信息；
b.定期对开采工作面的工作面排水系统排水能力进行判断，从而获取排水系统工作能力及状态，针对工作面局部向斜信息进行判断，获取工作面局部向斜位置及预计揭露长度信息，针对工作面顶板冲刷区信息进行判断，获取向斜位置及预计揭露长度信息，针对相邻采空区信息进行判断，获取采空区积水情况信息；
c.对上诉步骤中获取的综合排水系统工况状态、工作面局部向斜位置及预计揭露长度信息、向斜位置及预计揭露长度信息和采空区积水情况信息进行核算，从而得到当前开采工作面排水能力；
d.根据当前开采工作面核算出的排水能力，利用常规防治水技术进行超前疏放采空区积水的防治水能力。
所述工作面排水系统工作能力判断标准为100-150m3/h，若检测当前工作面排水系统工作能力小于该值，则需计算当前工作面所需排水量并更换排水设备； 若工作面排水系统工作能力大于该值，则需进一步检查工作面排水系统的工作状态是否正常。
所述工作面排水系统工作状态判断标准为是否存在故障，若排水系统没有故障，则工作面可以正常施工；若排水系统存在故障，则进行预警，并进行工作面排水能力保障工作。
判断工作面局部向斜是否存在，若不存在工作面局部向斜，则工作面可以正常施工；若存在工作面局部向斜，则需进一步判断工作面局部向斜位置及预计揭露长度大于或小于判断标准值。
所述向斜位置及预计揭露长度判断标准值为50-100m，若向斜预计揭露长度小于该值，则工作面可以正常施工；若向斜预计揭露长度大于该值，则提出预警，并进行工作面排水能力核算及保障工作。
实地调查是否存在顶板冲刷区，若不存在顶板冲刷区，则工作面可以正常施工；若存在顶板冲刷区，则需进一步判断顶板冲刷区位置及预计揭露长度大于或小于标准值。
所述顶板冲刷区位置及预计揭露长度判断标准为50-100m，若顶板冲刷区预计揭露长度小于该值，则工作面可以正常施工；若顶板冲刷区预计揭露长度大于该值，则进行预警，并进行工作面排水能力核算及保障工作。
调查是否存在相邻采空区，若不存在相邻采空区，则工作面可以正常施工；若存在相邻采空区，则需进一步判断相邻采空区积水状态。
判断相邻采空区积水状态，调查是否存在相邻采空区积水，若不存在相邻采空区积水，则工作面可以正常施工；若存在相邻采空区积水，则需进一步调查相邻采空区积水位置、积水量和超前疏放情况。
根据实地调查判断是否进行过超前疏放，若已经进行过超前疏放，则工作面可以正常施工；若尚未进行超前疏放，则提出预警，并进行超前疏放工程及验收工作。
有益效果：本发明运用多学科交叉突破已有技术解决了煤层为主含水层水害防治问题，能够提供多种突水形式的预警，可以减少因矿井水灾害危险事件导致的损失，甚至可以减少因矿井水灾害危险事件导致的人员伤亡，填补了煤层为主含水层这一特殊地质条件下水害防治设计方法的空白；本发明通过采集工作面详细信息，判断模块判断并选择防治水措施为直接在含水煤层中掘进和 回采提供了一种预警系统和相应对策，为安全掘进和回采提供了保障，本发明是解决煤层为主含水层水害防治的有效手段，其方法简单线性，方案设计合理，实施成本低，实际操作性强。
附图说明
图1是本发明的煤层为主含水层矿井的水害防治设计方法流程图。
具体实施方式
下面结合附图对本发明的一个实施例作进一步的描述：
如图1所示，本发明的煤层为主含水层矿井工作面开采水害防治方法，其特征在于包括步骤如下：
a.采集开采工作面的基本信息，包括工作面排水系统信息、工作面局部向斜信息、工作面顶板冲刷带状态和相邻采空区信息；
b.定期对开采工作面的工作面排水系统排水能力进行判断，工作面排水系统工作能力判断标准为100-150m3/h，若检测当前工作面排水系统工作能力小于该值，则需计算当前工作面所需排水量并更换排水设备；若工作面排水系统工作能力大于该值，则需进一步检查工作面排水系统的工作状态是否正常，判断工作面排水系统是否存在故障，若排水系统没有故障，则工作面可以正常施工；若排水系统存在故障，则进行预警，并进行工作面排水能力保障工作，从而获取排水系统工作能力及状态；
针对工作面局部向斜信息进行判断，获取工作面局部向斜位置及预计揭露长度信息，判断工作面局部向斜是否存在，若不存在工作面局部向斜，则工作面可以正常施工；若存在工作面局部向斜，则需进一步判断工作面局部向斜位置及预计揭露长度大于或小于判断标准值，判断向斜位置及预计揭露长度与标准值50-100m的关系，若向斜预计揭露长度小于该值，则工作面可以正常施工；若向斜预计揭露长度大于该值，则提出预警，并进行工作面排水能力核算及保障工作；
针对工作面顶板冲刷区信息进行判断，获取向斜位置及预计揭露长度信息，实地调查是否存在顶板冲刷区，若不存在顶板冲刷区，则工作面可以正常施工；若存在顶板冲刷区，则需进一步判断顶板冲刷区位置及预计揭露长度大于或小于判断标准值50-100m，若顶板冲刷区预计揭露长度小于该值，则工作面可以正常施工；若顶板冲刷区预计揭露长度大于该值，则进行预警，并进行工作面 排水能力核算及保障工作；
针对相邻采空区信息进行判断，调查是否存在相邻采空区，若不存在相邻采空区，则工作面可以正常施工；若存在相邻采空区，则需进一步判断相邻采空区积水状态，判断相邻采空区积水状态，调查是否存在相邻采空区积水，若不存在相邻采空区积水，则工作面可以正常施工；若存在相邻采空区积水，则需进一步调查相邻采空区积水位置、积水量和超前疏放情况；根据实地调查判断是否进行过超前疏放，若已经进行过超前疏放，则工作面可以正常施工；若尚未进行超前疏放，则提出预警，并进行超前疏放工程及验收工作；
c.对上诉步骤中获取的综合排水系统工况状态、工作面局部向斜位置及预计揭露长度信息、向斜位置及预计揭露长度信息和采空区积水情况信息进行核算，从而得到当前开采工作面排水能力；
d.根据当前开采工作面核算出的排水能力，利用常规防治水技术进行超前疏放采空区积水的防治水能力。
实施例一：
以某矿含水煤层井下掘进和回采为例，该矿主采2#煤层。其中2#煤层同时为主含水层，埋深350m。工作面主要水害威胁较多，主要有局部向斜区和直罗组冲刷带，2#煤层水和顶板水，当多种水源综合作用时，掘进和回采工作面涌水量将增加至110-160m3/h，如果此时工作面排水能力不足或出现故障，可能会局部积水甚至淹没设备；此外，该矿工作面以缓慢上山开采为主，采空区西侧相邻工作面掘进及回采不得不面临采空区积水威胁，如果采空区积水未及时排放或联络巷密闭失效，可能会发生工作面老空水突水事故。针对这种情况，通过采集工作面详细信息，利用判断模块选出相应的防治水措施，具体实施如下：
a.采集11213掘进工作面基本信息，采集对象包括工作面排水系统、工作面局部向斜、工作面顶板冲刷带和相邻采空区；
b.将11213掘进工作面基本信息输入判断模块，根据具体判断标准选择工作面防治水具体措施；
c.所述判断模块中排水系统工作能力判断标准为100-150m3/h，若11213掘进工作面排水系统工作能力小于该值，则需进行排水能力核算；若11213掘进工作面排水系统工作能力大于该值，则需进一步检查工作面排水系统的工作状态；
d.所述工作面排水系统工作状态判断标准为是否正常，若11213掘进工作面排水系统工作正常，则工作面可以正常施工；若11213掘进工作面排水系统工作不正常，则提出预警，并进行工作面排水能力保障工作；
e.所述判断模块中工作面局部向斜判断标准为是否存在工作面局部向斜，若11213掘进工作面不存在局部向斜，则工作面可以正常施工；若11213掘进工作面存在局部向斜，则需进一步判断工作面局部向斜位置及预计揭露长度；
f.所述向斜位置及预计揭露长度判断标准为50-100m，若11213掘进工作面向斜预计揭露长度小于该值，则工作面可以正常施工；若11213掘进工作面向斜预计揭露长度大于该值，则提出预警，并进行工作面排水能力核算及保障工作；
g.所述判断模块中顶板冲刷区判断标准为是否存在顶板冲刷区，若11213掘进工作面不存在顶板冲刷区，则工作面可以正常施工；若11213掘进工作面存在顶板冲刷区，则需进一步判断顶板冲刷区位置及预计揭露长度；
h.所述顶板冲刷区位置及预计揭露长度判断标准为50-100m，若11213掘进工作面顶板冲刷区预计揭露长度小于该值，则工作面可以正常施工；若11213掘进工作面顶板冲刷区预计揭露长度大于该值，则提出预警，并进行工作面排水能力核算及保障工作；
i.所述相邻采空区判断标准为是否存在相邻采空区，若11213掘进工作面不存在相邻采空区，则工作面可以正常施工；若11213掘进工作面存在相邻采空区，则需进一步判断相邻采空区积水状态；
j.所述相邻采空区积水状态判断标准为是否存在相邻采空区积水，若11213掘进工作面不存在相邻采空区积水，则工作面可以正常施工；若11213掘进工作面存在相邻采空区积水，则需进一步调查相邻采空区积水位置、积水量和超前疏放情况；
k.所述相邻采空区超前疏放判断标准为是否进行过超前疏放，若已经进行过超前疏放，则工作面可以正常施工；若尚未进行超前疏放，则提出预警，并进行超前疏放工程及验收工作。

Claims (10)

  1. 一种煤层为主含水层矿井工作面开采水害防治方法，其特征在于包括步骤如下：
    a.采集开采工作面的基本信息，包括工作面排水系统信息、工作面局部向斜信息、工作面顶板冲刷带状态和相邻采空区信息；
    b.定期对开采工作面的工作面排水系统排水能力进行判断，从而获取排水系统工作能力及状态，针对工作面局部向斜信息进行判断，获取工作面局部向斜位置及预计揭露长度信息，针对工作面顶板冲刷区信息进行判断，获取向斜位置及预计揭露长度信息，针对相邻采空区信息进行判断，获取采空区积水情况信息；
    c.对上诉步骤中获取的综合排水系统工况状态、工作面局部向斜位置及预计揭露长度信息、向斜位置及预计揭露长度信息和采空区积水情况信息进行核算，从而得到当前开采工作面排水能力；
    d.根据当前开采工作面核算出的排水能力，利用常规防治水技术进行超前疏放采空区积水的防治水能力。
  2. 根据权利要求1所述的煤层为主含水层矿井的水害防治方法，其特征在于：所述工作面排水系统工作能力判断标准为100-150m3/h，若检测当前工作面排水系统工作能力小于该值，则需计算当前工作面所需排水量并更换排水设备；若工作面排水系统工作能力大于该值，则需进一步检查工作面排水系统的工作状态是否正常。
  3. 根据权利要求2所述的煤层为主含水层矿井的水害防治设计方法，其特征在于：所述工作面排水系统工作状态判断标准为是否存在故障，若排水系统没有故障，则工作面可以正常施工；若排水系统存在故障，则进行预警，并进行工作面排水能力保障工作。
  4. 根据权利要求1所述的煤层为主含水层矿井的水害防治设计方法，其特征在于：判断工作面局部向斜是否存在，若不存在工作面局部向斜，则工作面可以正常施工；若存在工作面局部向斜，则需进一步判断工作面局部向斜位置及预计揭露长度大于或小于判断标准值。
  5. 根据权利要求4所述的煤层为主含水层矿井的水害防治设计方法，其特征在于：所述向斜位置及预计揭露长度判断标准值为50-100m，若向斜预计揭露长度小于该值，则工作面可以正常施工；若向斜预计揭露长度大于该值，则 提出预警，并进行工作面排水能力核算及保障工作。
  6. 根据权利要求1所述的一种煤层为主含水层矿井的水害防治设计方法，其特征在于：实地调查是否存在顶板冲刷区，若不存在顶板冲刷区，则工作面可以正常施工；若存在顶板冲刷区，则需进一步判断顶板冲刷区位置及预计揭露长度大于或小于标准值。
  7. 根据权利要求6所述的一种煤层为主含水层矿井的水害防治设计方法，其特征在于：所述顶板冲刷区位置及预计揭露长度判断标准为50-100m，若顶板冲刷区预计揭露长度小于该值，则工作面可以正常施工；若顶板冲刷区预计揭露长度大于该值，则进行预警，并进行工作面排水能力核算及保障工作。
  8. 根据权利要求1所述的一种煤层为主含水层矿井的水害防治设计方法，其特征在于：调查是否存在相邻采空区，若不存在相邻采空区，则工作面可以正常施工；若存在相邻采空区，则需进一步判断相邻采空区积水状态。
  9. 根据权利要求8所述的一种煤层为主含水层矿井的水害防治设计方法，其特征在于：判断相邻采空区积水状态，调查是否存在相邻采空区积水，若不存在相邻采空区积水，则工作面可以正常施工；若存在相邻采空区积水，则需进一步调查相邻采空区积水位置、积水量和超前疏放情况。
  10. 根据权利要求9所述的一种煤层为主含水层矿井的水害防治设计方法，其特征在于：根据实地调查判断是否进行过超前疏放，若已经进行过超前疏放，则工作面可以正常施工；若尚未进行超前疏放，则提出预警，并进行超前疏放工程及验收工作。
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