CN103424055A - Method for observing caving steps of fully-enclosed non-pedestrian roadways - Google Patents

Method for observing caving steps of fully-enclosed non-pedestrian roadways Download PDF

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CN103424055A
CN103424055A CN 201310326674 CN201310326674A CN103424055A CN 103424055 A CN103424055 A CN 103424055A CN 201310326674 CN201310326674 CN 201310326674 CN 201310326674 A CN201310326674 A CN 201310326674A CN 103424055 A CN103424055 A CN 103424055A
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line
measuring
roadway
caving
roadways
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CN 201310326674
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CN103424055B (en )
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李树刚
林海飞
王红刚
潘红宇
赵鹏翔
成连华
魏宗勇
王红胜
李莉
丁洋
张天军
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西安科技大学
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Abstract

The invention relates to the field of coal and gas simultaneous extraction, particularly to a method for observing caving steps of fully-enclosed non-pedestrian roadways. A measuring line straightening device and an automatic measuring line expansion length recording device are included. Test of the caving steps of the fully-enclosed non-pedestrian roadways is achieved through mutual matching of the devices. Through the method, the caving steps of the closed roadways advanced along with working faces and sinkages of roadway roofs can be observed outside roadway closed walls, and relations between the fully-enclosed non-pedestrian roadways and roof weighting steps of the working faces are effectively disclosed. Observation results are clear and intuitive, and the implementation process is safe and reliable. According to the method, the problem of test of the caving steps of the fully-enclosed non-pedestrian roadways is solved, a method is provided for further testing the caving steps of high-level gas extraction roadways arranged along directions (inclinations) of coal seam roofs, the evidence is provided for determining levels of high-level gas drainage roadways arranged along directions (inclinations) of the coal seam roofs, and the method has significance in improving the gas extraction efficiency.

Description

全密闭非行人巷道垮落步距观测方法 Non-hermetic pedestrian tunnel observation method from caving

技术领域 FIELD

[0001] 本发明涉及煤与瓦斯共采领域,具体是一种测试全封闭非行人巷道顶板垮落步距的方法。 [0001] The present invention relates to the field of coal and gas extraction, in particular from a method of caving roadway roof closed non-pedestrian test. 该方法适用于煤矿生产过程中,为抽采瓦斯所布置的全封闭非行人巷道随工作面推进的垮落步距开展观测,进一步明确该巷道垮落与工作面周期来压步距之间的关系,为全密闭非行人巷道相关参数的确定及其维护方式提供了理论指导。 This method is applicable to coal mine production process, fully enclosed pedestrian tunnel to the non-extraction of gas are arranged in advance with the face of caving to carry out observations from further clarify the tunnel collapse and periodic face pressure to step between the distance relationships, providing theoretical guidance for determining the non-fully enclosed pedestrian tunnel parameters and maintenance mode.

背景技术 Background technique

[0002]目前矿井瓦斯灾害仍是制约我国煤矿安全生产的事故之一,同时瓦斯还是造成温室效应、破坏臭氧层等大气环境污染之源。 [0002] Currently mine gas disaster remains a constraint for one of China's coal mine production safety accidents, while gas source or cause of the greenhouse effect of atmospheric pollution, destruction of the ozone layer. 另外,瓦斯还是一种经济的可燃气体,是高热、洁净、方便的能源。 In addition, gas is an economical fuel gas, high fever, clean, convenient source of energy. 煤层瓦斯集利与害于一身,是煤矿特有的宝贵资源,实现煤与瓦斯两种资源的有效、安全共采,可实现矿井安全生产、环境保护和新能源供应等三重效应,获得显著的经济和社会效益,目前国家已将煤矿瓦斯治理利用列入了“863”国家重点攻关项目。 Lee seam gas collection and harm in one, is unique valuable coal resources to achieve effective and safe simultaneous extraction of coal and gas and resources, enabling the triple effect of mine safety, environmental protection and new energy supplies, access to significant economic and social benefits, the country has been the use of coal mine gas control included in the "863" national key research projects.

[0003] 煤矿设置高位瓦斯抽采巷道主要以在煤层顶板上方布置全封闭非行人瓦斯抽采巷道为主要抽采手段,其中沿煤层顶板布置走向或倾向高位瓦斯抽采巷是目前矿井开采过程中综合治理瓦斯的重要手段之一,而高位瓦斯抽采巷布置层位的合理与否,又决定着瓦斯抽采效果的好坏及巷道维护的难易程度。 [0003] Coal set the high gas drainage tunnel mainly over the seam roof arrangement closed non-pedestrian gas drainage tunnel main drainage means, wherein along the seam roof arrangement strike or propensity high gas pumping gateway is underground mining process one of the important means comprehensive control of gas, and high gas drainage roadway layout reasonable horizon or not, and determines the degree of difficulty is good or bad effect of gas drainage and roadway maintenance. 其中高位抽采巷随工作面推进时的垮落步距又是影响高位瓦斯抽采巷层位选择的重要因素之一。 Caving step distance and high gas drainage is affecting one of the important factors when selecting Lane horizon where high extraction Lane with face forward. 目前,我国所有采用高位瓦斯抽采巷抽采瓦斯的矿井,由于高位瓦斯抽采巷在使用期间是两端密封起来的,几乎无法对该巷道随工作面推进的垮落步距进行测试,很难确定瓦斯高位抽采巷道与回采工作面推进距离之间的关系,使得瓦斯抽采浓度始终难以达到满意的效果。 At present, all using high mine gas drainage roadway drainage of gas, due to the high gas extraction Lane during use is sealed at both ends, and almost impossible to advance with the face of the tunnel caving step distance test, it is high gas extraction is difficult to determine the relationship between the distance from the roadway and mining face advance, so that the concentration of gas drainage has always been difficult to achieve satisfactory results.

发明内容 SUMMARY

[0004] 为了确定该巷道与工作面来压步距之间的关系,从而解决如何确定高位瓦斯抽采巷的垮落步距,是提高瓦斯抽采浓度的关键问题,本发明提供了一种全密闭非行人巷道垮落步距观测方法。 [0004] In order to determine the tunnel face with pressure relationships between the pitches, so as to solve how to determine the high level of gas drainage from caving roadway, the key issue is to improve the drainage of gas concentration, the present invention provides a non-hermetic pedestrian tunnel from caving observation method.

[0005] 本发明的技术解决方案是:一种全密闭非行人巷道垮落步距观测方法,包括测线拉直装置和测线伸缩长度自动记录装置,测线拉直装置由重物(6)、滑轮(2)及测线(3)组成,测线伸缩长度自动记录装置由测线伸缩长度自动测试仪(I)及测线(3)组成,包括下述步骤:在高位瓦斯抽采巷道内沿巷道顶板设置若干测点,每个布置于巷道内部端头处的测点均连接一个重物(6),并捆绑牢固;在巷道内部每隔5〜IOm设置一个陶瓷滑轮(2),用来保证阶段性测线的平直;测线(3)的另一端利用PE管(5)作为变径,将测线(3)拉出高抽巷的密闭墙(7),与测线伸缩长度自动记录仪(I)相连接;根据开采煤层厚度推算其上覆岩层的垮落高度,相应的在高位抽采巷道密闭墙之外预先留出可能长度的测线,确保测线有足够的拉伸长度;当工作面推进,经过高位瓦斯抽采巷时,由于矿山压力的 [0005] The technical solution of the invention is: A non-hermetic pedestrian tunnel from caving observation method, comprising sensing wire straightening means and a measured line length of the telescopic automatic recording apparatus, the weight measuring wire straightening means (6 ), the pulley (2) and the measuring line (3) and the observed line stretching the length of the recording apparatus automatically measuring the length of the telescopic line automatic tester (I) and the measuring line (3), including the steps of: extraction of gas at a high setting a plurality of measurement points within the tunnel along a tunnel roof, is arranged at each measuring point at the inner end connected to a weight average roadway (6), and firmly tied; 5~IOm provided a ceramic pulley (2) inside the tunnel every is used to ensure straight line measurement stage; another sensing line (3) using a PE pipe end (5) as a reducer, the measuring line (3) out of a high pumping Lane closed wall (7), and measuring loggers line stretching the length (I) is connected; breaking down the height of the estimated overburden according mining seam thickness, the corresponding drainage tunnel in the high pre-sealed outside wall leaves open the possibility of measuring the length of wire, to ensure that lines are measured sufficient tensile elongation; face forward when, after the high gas extraction Lane, since the pressure of the mine 用该巷道逐渐弯曲下沉乃至突然垮落,在整个过程中巷道中测线端的重物(6)在重力作用下随着高抽巷的运动而下降,从而使得密闭墙(7)外测线(3)自由端产生相应的位移,从而实现对其垮落程度及垮落步距的测量。 The gently curved with the roadway and the sinking suddenly collapse, the entire process line end roadway measured weight (6) with a high pumping action Lane lowered under gravity, so that the closed wall (7) outside the survey line (3) to produce the corresponding displacement of the free end, in order to achieve its measurement from the degree of collapse and caving.

[0006] 所述的测线(3)布置方式如下:在现场施工过程中,根据巷道实际宽度,预设4〜5条测线(3),可分别布置于进行测试的全封闭非行人巷道总长度的1/3范围内;每个测线 Measuring line (3) according to [0006] are arranged as follows: on-site during construction, according to the actual roadway width, the predetermined survey lines 4 to 5 (3), respectively disposed in closed non-pedestrian tunnel testing within the range of 1/3 of the total length; each sensing line

(3) 一端布置一个重物,并用光滑绝缘铜丝绳将重物(6)固定牢固于巷道底板;测线(3)经每隔5〜10米布置的陶瓷滑轮(2)拉至密闭墙(7)附近,再通过PE管(5)作为变径,将测线(3)引至测试巷道密闭墙(7)外侧,与测线伸缩长度自动记录仪(I)相连接。 (3) a weight is arranged at one end, with a smooth insulated copper wire rope to weight (6) is fixed firmly to the floor tunnel; sensing line (3) via a ceramic facing pulley every 5 to 10 meters of fabric (2) is pulled to a closed wall (7) close to, and through the PE pipe (5) as a reducer, the measuring line (3) lead to a test roadway closed wall (7) outside, and measuring the length of the telescopic line automatic recorder (I) is connected.

[0007] 本发明可在巷道密闭外对密闭巷道随工作面推进的垮落步距及巷道顶板下沉量进行观测,并有效的揭示全密闭非行人巷道与工作面来压步距之间的关系。 [0007] The present invention may be sealed to the roadway with the advance of the face caving and from the tunnel roof subsidence sealed observation outside the roadway, and effective non-hermetic disclosed pedestrian tunnel to the work surface pressure between the pitches relationship. 观测结果清楚直观,实施过程安全可靠。 Clear visual observations, safe and reliable implementation. 该测试方法解决了全密闭非行人巷道垮落步距测试这一难题,对进一步测试煤层顶板走(倾)向高位瓦斯抽采巷的垮落步距提供了方法,对确定煤层顶板走(倾)向高位瓦斯抽放巷的层位提供了依据,对提高瓦斯抽采效率有重要的意义。 The test method to solve the non-fully enclosed pedestrian tunnel from caving test this problem, to go further testing seam roof (tilting) to high gas drainage roadway caving step distance provides a method for determining the seam roof is gone (pour ) to the high level gas drainage Lane horizon provides the basis for gas drainage efficiency has important significance to improve.

附图说明 BRIEF DESCRIPTION

[0008] 图1为本发明测线拉直装置和测线伸缩长度自动记录装置结构示意图; Straightening means and the schematic structure of the apparatus automatically measuring the length of the telescopic line recording line [0008] Figure 1 of the present invention;

[0009] 图2为图1的俯视图。 [0009] FIG. 2 is a plan view of FIG. 1.

[0010] 图3为各测线日增长率结果示意图。 [0010] FIG. 3 is a schematic diagram of the measuring line day growth results.

具体实施方式 Detailed ways

[0011] 本发明包括测线拉直装置和测线伸缩长度自动记录装置,通过两者之间的相互配合,来实现对全密闭非行人巷道垮落步距的测试。 [0011] The present invention includes a straightening device and a sensing line sensing line length of the telescopic automatic recording apparatus, by mutual engagement between the two to achieve the non-hermetic pedestrian tunnel from caving test. 其中测线拉直装置由重物6、滑轮2及测线3组成;测线伸缩长度自动记录装置由测线伸缩长度自动测试仪I及测线3组成。 Wherein the sensing means consist of straightening heavy line 6, the pulley 2 and the measuring line 3; sensing line length of the telescopic device consists of automatically recording the measured length of the telescopic line automatic tester I and the survey line consisting of 3. 在高位瓦斯抽采巷道内沿巷道顶板设置若干测点,每个布置于巷道内部端头处的测点均连接一个测线拉直装置,并捆绑牢固。 Setting a plurality of measuring points along the tunnel roof in high gas drainage tunnel, each arranged inside the tunnel at the ends of a measuring point are connected inline straightening apparatus, and firmly tied. 在巷道内部每隔5〜IOm设置一个陶瓷滑轮,用来保证阶段性测线的平直。 A pulley provided at intervals inside the tunnel ceramic 5~IOm, to ensure stepwise straight survey line. 测线3的另一端利用直径为2.5cm的PE管5作为变径,将测线3拉出高抽巷的密闭墙7,与测线伸缩长度自动记录仪I相连接。 Another end of the measuring line 3 using 2.5cm diameter PE pipe 5 as an adjustable, high pump sensing line drawn closed wall 3 Lane 7, and measuring the length of the telescopic line I is connected to an automatic recorder. 根据开采煤层厚度推算其上覆岩层的垮落高度,相应的在高位抽采巷道密闭墙之外预先留出可能长度的测线,确保测线有足够的拉伸长度。 The seam thickness caving mining estimating the height of the overburden, at a high level corresponding to closed drainage tunnel wall outside the predetermined length may leave the survey line, measuring line to ensure sufficient tensile elongation. 当工作面推进,经过高位瓦斯抽采巷时,由于矿山压力的作用该巷道逐渐弯曲下沉乃至突然垮落,在整个过程中巷道中测线端的测线拉直装置在重力作用下随着高抽巷的运动而下降,从而使得密闭墙外测线自由端产生相应的位移,从而实现对其垮落程度及垮落步距的测量。 When face forward, through the high gas extraction Lane, due to the pressure of the mine tunnel and the sudden sinking gradually bending collapse, the entire process ends roadway sensing line sensing line straightening means under gravity with high Lane pumping action decreases, so that a closed wall measured line to produce the corresponding displacement of the free end, in order to achieve its measurement from the degree of collapse and caving.

[0012] 测线3布置方式:在观测方案现场施工过程中,由于巷道宽度的限制,为了保证各测点之间的横向距离,可根据巷道实际宽度,预设4〜5条测线3,可分别布置于进行测试的全封闭非行人巷道总长度的1/3范围内。 [0012] The sensing line arrangement 3: Scheme observation site during construction, due to the width of the roadway, in order to ensure the lateral distance between the measuring point, according to the actual roadway width, the predetermined survey lines 4 to 5 3, respectively, may be arranged within the range of 1/3 of the overall closed length of the non-pedestrian tunnel testing. 每个测线3 —端布置一个测线拉直装置,并用直径3mm的光滑绝缘铜丝绳将该装置固定牢固于巷道底板。 Each survey line 3 - end of the straightening means is arranged a survey line, and a smooth-insulated copper wire rope with a diameter of 3mm is fixed firmly to the apparatus roadway floor. 测线3经每隔5〜10米布置的陶瓷滑轮2拉至密闭墙附近,再通过直径2.5cm的PE管5作为变径,将测线3引至测试巷道密闭墙7外侧,与测线移进量自动测试仪I相连接。 Every 3 through the survey line 5 to 10 meters of fabric near the ceramic pulley to pull the opposed closed wall 2, through the PE as the diameter of the pipe 5 2.5cm adjustable, the measured lead wire 3 to the outside of the test roadway closed wall 7, and the sensing line automatic shift amount of feed is connected to the tester I.

[0013] 实施例: [0013] Example:

[0014] 本发明选择某高瓦斯煤矿在其主采煤层顶板沿煤层走向布置的全封闭非行人瓦斯抽采巷道作为现场试验区。 [0014] The present invention for field test area enclosed gas pumping non-pedestrian as a gateway in the main high-gas coal seam roof disposed along Coal Seam. 根据开采煤层厚度推算,其上覆岩层垮落高度不会超过10m,因此,在测试巷道密闭墙之外每条测线3预留10〜15m。 The thickness of the projections mining seam, which overburden collapse height does not exceed 10m, and therefore, each sensing line 3 reserved 10~15m test roadway outside the sealed wall. 当工作面推过高抽巷时,由于矿山压力的作用,测试巷道的顶板逐渐弯曲下沉乃至突然垮落,在整个过程中测试巷道密闭墙内部的测线随着巷道顶板的下沉及其垮落而向下移动,从而使得密闭墙外的测线自由端产生相应的位移,从而测试该巷道的垮落步距。 When the face is too high pumping Lane pushed, due to the pressure of the mine, the top plate is bent gradually sinking test roadway even sudden caving, test roadway closed throughout the process line with the inner wall measured sinking tunnel roof and collapse moves downward, so that the free end of the measuring line closed wall produces a corresponding displacement of the roadway so that the test pitch caving.

[0015] 观测点布置方案:在观测方案现场实施过程中,由于巷道宽度的限制,为了保证各测点之间的横向距离,根据现场巷道实际宽度,最终决定沿巷道顶板布置4条测线3:其中2个位于巷道中部,另外2个位于巷道两帮。 [0015] observation point arrangement: observation field implementation embodiment, since the width of the roadway limits, in order to ensure the lateral distance between the measuring point, the actual width of the roadway scene, finally decided 3 arranged along a measuring line 4 Roof : 2 wherein the roadway in the middle, two on the roadway two groups. 通过分布于巷道密闭墙7内侧的各滑轮2及测线3,将4根测线3牵引至距离巷道密闭墙130m、110m、90m及70m处,在每个测点的末端布置一个重物6,并用直径3mm的光滑绝缘铜丝绳将该重物6与测线3固定牢固,保证测线3时刻处于拉直状态。 3, the four sensing line 3 located in the roadway enclosed by pulling the pulleys 2 and 7 inside the measuring line wall to wall distance roadway closed 130m, 110m, 90m and 70m, the weight 6 is arranged at each end of a measuring point and a smooth insulated copper wire rope with a diameter of 3mm and measuring the weight 6 fixed firmly line 3, line 3 to ensure that the measured time is straightened state. 在测线3的另一端通过直径2.5cm的PE管5作为变径将其引至巷道密闭墙7外侧,为了保证测试系统能够对巷道垮落步距及其下沉量进行准确的测量,在巷道密闭墙外侧预留10〜15m长度的测线3,并将其自由端头与测线伸缩长度自动测试仪I连接。 The other end of the line 3 by measuring 2.5cm diameter PE pipe 5 as it is introduced to the reducer roadway closed outer wall 7, in order to ensure that the test system can be from caving and subsidence accurate measurements of the roadway, in outer roadway reserved 10~15m closed wall measured length of 3, and the free ends of the length of the survey line automatic tester I telescopic connection.

[0016] 工作面推进过程中,起初巷道形态基本保持原状,待工作面推进一段距离后,在矿山压力的作用下,巷道出现下沉变形,工作面继续推进,巷道最后出现垮落。 [0016] Face promoting the process of the first aspect roadway remained undisturbed until the advance of the face a distance, under the effect of pressure mine roadway sinking deformation occurs, continue to face forward, the last occurrence of tunnel collapse. 此后随着工作面的继续推进,巷道呈现出上述三种变形的周期性重复现象,在此过程中,测线3会随着巷道的下沉及垮落发生相应的移动,在巷道密闭墙7外侧的穿过测线伸缩长度自动测试仪I的测线3自由端则会随之前移,测线伸缩长度自动测试仪I则会对测线3的移进量进行实时监控,从而保证测线3对巷道垮落全过程测试的连续性,使得测试结果能更精确的反映巷道的垮落步距及其移进量,同时也可通过测线3移进量的大小看出观测巷道顶板何时下沉量、何时垮落。 Thereafter with continued face forward roadway showing the three phenomena is periodically repeated deformation, in this process, the respective mobile survey line 3 occurs as subsidence and collapse of the tunnel, the tunnel closed wall 7 outside through the sensing line automatic tester I telescopic length measured along line 3 will forward free end, the telescopic length of the survey line tester I will automatically move into the measurement of real-time monitoring line 3, so as to ensure the survey line 3 roadway breaking down the whole process of testing continuity, so that a more accurate test results can be reflected from the roadway caving into its shift amount, but can also be seen by the amount of shifting into a size measuring line 3 He observed roof when subsidence, when caving.

[0017] 该方法已在某高瓦斯煤矿主采工作面进行了工业性试验,对其全密闭非行人巷道随工作面推进过程中巷道变形下沉量及其垮落步距进行了观察。 [0017] This method has been the main industrial test in a high gas coal mining face, its non-hermetic pedestrian lane roadway with the advance of the face during the subsidence and deformation from caving was observed. 根据现场实际情况,在该煤矿主采工作面顶板走向全封闭非行人巷道贯通前,沿其动版布置的4个测点在该巷道中的长度分别为:1#测线在该巷道中的长度160m左右,2#测线在该巷道中的长度135m左右,3#测线在该巷道中的长度I IOm左右,4#测线在该巷道中的长度80m左右。 According to the actual situation in the coal mining main Roof closed towards the front non-penetrating pedestrian tunnel, along the four measuring points which are arranged movable plate length of the roadway are: # 1 in the measuring line Roadway a length of about 160m, the length of the measuring line # 2 in the roadway about 135m, about 3 # I IOm scan line length in the roadway, the length of the measuring line # 4 in the roadway about 80m.

[0018] 对巷道中布置各测点下沉量进行测量,得出如图3的测试结果。 [0018] The arrangement of each measuring point roadway subsidence measurements, the test results obtained in FIG. 3. 随着工作面不断推进,上覆岩层发生下沉,从而使得各测点随之发生下沉,最终垮落。 With the development of the face, the overburden subsidence occurs, so that the sinking of the measuring point ensues, ultimately collapse. 从图中可以看出,在6月16〜17日1#测线缩短3cm,6月22〜23日2#测线缩短3.5cm,6月27〜28日3#测线缩短10.9cm, 7月2〜3日4#测线缩短18.6cm。 As can be seen from the figure, on June 1 # 16~17 days shorter measuring line 3cm, June 22~23 Day 2 # measuring line shorten 3.5cm, June sensing line # 3 27~28 days shortened 10.9cm, 7 May day 2 ~ 4 # test line shortened 18.6cm. 由前面测线缩短距离可以判定1#〜4#测点开始垮落时间分别为:6月16〜17日、6月22〜23日、6月27〜28日、7月2〜3日。 Reducing the distance measured from the previous line can be determined measurement points # 1 # ~ 4 Start collapse time was: June 16~17, June 22~23, June 27~28, July 2 to 3 days. 结合现场实际顶板垮落步距、测试点距离工作面距离及工作面日推进量与测试结果进行对比分析可以发现,在6月16〜17日、6月22〜23日、6月27〜28日、7月2〜3日测试线分别发生了较大程度的缩短,说明此时该顶板走向全封闭非行人巷道发生垮落,从而确定该煤矿主采工作面顶板走向全封闭非行人巷道的垮落步距为24m、26m和20m,平均23.3m。 Combined with the actual scene from the roof caving, test point distance from the face amount of the advance and face daily test results were analyzed can be found in June 16~17, June 22~23, June 27~28 , July 2 to 3 day testing lines undergone a greater degree of shortening, at which point the top plate to be described non-fully enclosed pedestrian tunnel collapse occurs, thereby determining the main extraction roof coal to a non-pedestrian lanes closed caving in steps of 24m, 26m and 20m, an average of 23.3m.

Claims (2)

  1. 1.一种全密闭非行人巷道垮落步距观测方法,包括测线拉直装置和测线伸缩长度自动记录装置,测线拉直装置由重物(6)、滑轮(2)及测线(3)组成,测线伸缩长度自动记录装置由测线伸缩长度自动测试仪(I)及测线(3)组成,其特征在于:包括下述步骤:在高位瓦斯抽采巷道内沿巷道顶板设置若干测点,每个布置于巷道内部端头处的测点均连接一个重物(6),并捆绑牢固;在巷道内部每隔5〜IOm设置一个陶瓷滑轮(2),用来保证阶段性测线的平直;测线(3)的另一端利用PE管(5)作为变径,将测线(3)拉出高抽巷的密闭墙(7),与测线伸缩长度自动记录仪(I)相连接;根据开采煤层厚度推算其上覆岩层的垮落高度,相应的在高位抽采巷道密闭墙之外预先留出可能长度的测线,确保测线有足够的拉伸长度;当工作面推进,经过高位瓦斯抽采巷时,由于矿山压力的作用该巷道逐渐弯 A non-hermetic pedestrian tunnel from caving observation method, comprising sensing wire straightening means and a measured line length of the telescopic automatic recording apparatus, the weight measuring wire straightening means (6), the pulley (2) and the measuring line (3) and the observed line stretching the length of the recording apparatus automatically measuring the length of the telescopic line automatic tester (I) and the measuring line (3), and is characterized in that: comprising the steps of: at a high gas pumping the roadway along the tunnel roof setting a plurality of measuring points, each measuring point disposed at the inner end connected to a weight average roadway (6), and firmly tied; 5~IOm disposed inside the tunnel every one ceramic pulley (2), for ensuring phase straightness measuring line; the other end of the measuring line (3) using a PE pipe (5) as a reducer, the measuring line (3) out of a high pumping Lane closed wall (7), automatically measuring the line length of the telescopic recording instrument (I) is connected; breaking down the height of the estimated overburden according mining seam thickness, the corresponding drainage tunnel in the high pre-sealed outside wall leaves open the possibility of measuring the length of wire, to ensure that there is sufficient tensile test line length ; when face forward, after high gas extraction Lane, due to mining of the pressure gradually curved roadway 曲下沉乃至突然垮落,在整个过程中巷道中测线端的重物(6)在重力作用下随着高抽巷的运动而下降,从而使得密闭墙(7)外测线(3)自由端产生相应的位移,从而实现对其垮落程度及垮落步距的测量。 Qu sink even sudden collapse, weight roadway (6) with the high end of the survey line pumping action Lane lowered under gravity in the whole process, so that the closed wall (7) outside the test line (3) consisting of generating a respective end of the displacement, thereby realizing distance measuring its degree of collapse and caving.
  2. 2.如权利要求1所述的全密闭非行人巷道垮落步距观测方法,其特征在于:所述的测线(3)布置方式如下:在现场施工过程中,根据巷道实际宽度,预设4〜5条测线(3),可分别布置于进行测试的全封闭非行人巷道总长度的1/3范围内;每个测线(3) —端布置一个重物(6),并用绝缘铜丝绳光滑将重物(6)固定牢固于巷道底板;测线(3)经每隔5〜10米布置的陶瓷滑轮(2)拉至密闭墙(7)附近,再通过PE管(5)作为变径,将测线(3)引至测试巷道密闭墙(7 )外侧,与测线伸缩长度自动记录仪(I)相连接。 2. The non-hermetic pedestrian tunnel according to claim 1 from caving observation method, comprising: measuring line (3) according to the following arrangement: the construction process in the field, according to the actual width of the roadway, the preset 4 to 5 survey lines (3), respectively disposed within the range of the total length of the non-pedestrian tunnel testing 1/3 closed; each sensing line (3) - a weight disposed end (6), and with an insulating the smooth copper wire rope weight (6) is fixed firmly to the floor tunnel; sensing line (3) via a ceramic facing pulley every 5 to 10 meters of fabric (2) is pulled to a closed wall (7) close to, and through the PE tube (5 ) as a adjustable, the measuring line (3) lead to a test roadway closed wall (7) outside, and measuring the length of the telescopic line automatic recorder (I) is connected.
CN 201310326674 2013-07-30 2013-07-30 Non-hermetic pedestrian tunnel observation method from caving CN103424055B (en)

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US4573531A (en) * 1980-02-21 1986-03-04 Vsesojuznoe Nauchno-Proizvod-Stvennoe Obiedinenie "Sojuzpromgaz" Method of underground gasification of coal seam
RU2382879C1 (en) * 2008-09-16 2010-02-27 "Государственное образовательное учреждение высшего профессионального образования Дальневосточный государственный технический университет (ДВПИ им. В.В. Куйбышева)" (ГОУ ВПО ДВГТУ) Underground gasification method
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