CN109060881B - Test pit for explosive single package test and stacking test - Google Patents
Test pit for explosive single package test and stacking test Download PDFInfo
- Publication number
- CN109060881B CN109060881B CN201810856955.5A CN201810856955A CN109060881B CN 109060881 B CN109060881 B CN 109060881B CN 201810856955 A CN201810856955 A CN 201810856955A CN 109060881 B CN109060881 B CN 109060881B
- Authority
- CN
- China
- Prior art keywords
- pit
- test
- stacking
- explosive
- operation platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a test pit for explosive single package test and stacking test, and belongs to the technical field of explosive test devices. The invention relates to a test pit for explosive single package test and stacking test, which comprises a pit, an operation platform, a boundary enclosure and a wire netting; the operating platform is arranged in the center of the pit; the wire netting is arranged inside the operation platform; the boundary enclosure is arranged outside the operation platform. The test pit is reasonable in design, simple to construct, low in construction cost, simple and convenient to operate and high in safety when in experiment, can completely absorb and limit hazards generated by explosion in the test pit, effectively prevents potential safety risks, can be repeatedly used for multiple times, and meets the standard and requirements of the united nations on the test of explosives.
Description
Technical Field
The invention belongs to the technical field of explosion test devices, and particularly relates to a test pit for explosive single package test and stacking test.
Background
The recommendation test for dangerous cargo transport and the first part of the standard manual, sections 16.4 and 16.5, respectively, in the United nations' protocol for the classification of explosives, specify a single package test [ test 6(a) ]]And stacking test [ test 6(b) ]]The method of (1). The single pack test is used to determine whether an explosive is present as a whole, and the stacking test is used to determine whether an explosive has propagated from one pack to another or from an unpackaged item to another. The requirements of both test methods are similar and both require the pack to be closed by placing the pack on a verification steel plate placed on the ground, the best closing method being to fill the pack with earth or sand in a container similar in shape and size to the pack and to place it as close as possible around the pack so that the minimum closing thickness in each direction is not more than 0.15m for a thickness of less than 0.15m3The package of (2) is 0.5m, for more than 0.15m3The package of (2) is 1.0 m. Other methods of closure are by filling with soil orA box or bag of sand is placed around and on top of the pack or loose sand is used.
The contents of the package were initiated and observed as follows: thermal effects, spray effects, detonation, deflagration or evidence of explosion of the entire contents of the package. After initiation, the safety waiting time specified by the test institution is to be observed, and the test is to be carried out three times, unless a decisive result (for example, an explosion of all the contents) occurs at an earlier time. If the number of trials suggested does not give a clearly interpretable result, the number of trials should be increased.
The results of the individual package test [ test 6(a) ] were evaluated by considering the product as being scored 1.1 if evidence of a global explosion was present, including (a) the presence of a pit at the test site; (b) the verification board under the pack is damaged; (c) measuring the shock wave; and (d) blocking material splitting and quartering. If the product is listed in item 1.1, then no additional testing is required; otherwise, a test of type 6(b) should be performed.
The method of evaluation of the results of the stacking test [ test 6(b) ] is that-the contents of more than one package or unpackaged article actually explode instantaneously, the product should be scored 1.1. Signs of this include: (a) a pit in the test site was much larger than that in the test of a single pack or unpackaged item; (b) the verification panel underneath the pack is damaged to a much greater extent than the damage caused in the test of a single pack or unpackaged article; (c) shock waves were measured to be much greater than those measured in single-pack or unpackaged article testing; and (d) the blocking material is very severely disintegrated and scattered. Otherwise, a test of type 6(c) is followed.
In the case of underground shallow surface tests closed with loose sand, it is common to dig a pit, place the verification iron plate and the sample in the pit, and fill the pit with loose sand. However, after the test is finished, the soil pit is easy to crack and collapse due to the impact of explosion, the next test cannot be performed in the original soil pit, and great labor cost and time cost are consumed for re-excavating the soil pit.
In a patent which the present inventors have filed for disclosure, a test pit for explosion (application number: CN201611148273.6) for an explosive article single package test and a stacking test is disclosed, and although the test pit can be reused, the pit body is constructed based on a sample size in one period, and if an over-specification sample is encountered, the test cannot be performed. And the bottom of the test pit is not provided with a settlement prevention plate, so that the ground can generate settlement after repeated use for many times, and the test determination is influenced. After raining, because of no drainage system, the accumulated water in the test pit cannot be drained for a long time, and the use is influenced. A test method of explosive single package test and stacking test (application number: CN201611147368.6) is disclosed, which has no operation platform, can not effectively prevent the collapse of scattered sand above the operation platform, and can cause great influence on the excavation repeat test, only the explosive single package is placed in a test pit, and the steel plate is tested and verified by burying the sand, which is not beneficial to the repeat test in the actual operation process; and an explosion or combustion boundary is not arranged, so that the complete test of the test product is not facilitated, and the test effect are influenced.
Disclosure of Invention
The invention aims to provide a test pit for explosive single package test and stacking test, which is used for meeting the operation requirements of explosive single package test and stacking test in the recommendation test and standard manual of dangerous goods transportation in the United nations, ensuring the reusability of the test pit, adjusting the test boundary according to the size of a sample and improving the efficiency of single package test and stacking test.
The invention solves the technical problems by the following technical scheme:
a test pit for explosive single package test and stacking test comprises a pit, an operation platform, a wire netting and a boundary wall; the operating platform is arranged in the center of the pit; the wire netting is arranged inside the operation platform; the boundary enclosure is arranged outside the operation platform.
As a further improvement of the technical scheme, the operating platform is a square frame body, and four triangular support legs are arranged below four vertex angles of the operating platform; one of the corners of the triangular foot points towards the centre point. A triangular support leg is arranged below the operating platform and used for supporting the whole operating platform, so that enough space is reserved below the operating platform for an explosion test experiment; meanwhile, one of the angle points of the triangular support legs needs to point to the central point, so that the impact in the explosion process can be effectively transmitted in the horizontal direction, and the explosion effect can be measured more favorably. The operating platform is of a square frame structure, can prevent scattered sand on the upper part from collapsing during digging, can be used for erecting relevant equipment such as a depth scale, a shock wave sensitivity instrument and the like, can provide a footing point for an operator in a sand pool, and is convenient for sand shoveling, measuring and other operations. No barrier is arranged on the horizontal direction of the sample for shielding, and when the sample explodes, all energy in the horizontal direction can be completely absorbed by the sand layer without influencing the vertical direction of the sample
As a further improvement of the technical scheme, the bottom ends of the triangular support legs are provided with anti-settling plates. The anti-sedimentation plate is used for preventing sedimentation of the whole reinforced concrete structure in the using process, particularly after repeated use for many times, the test pit can generate sedimentation due to multiple times of explosion, and after the anti-sedimentation plate is arranged, the ground can be effectively prevented from sedimentation, and the repeated test times and strength of the test pit are improved.
As a further improvement of the technical scheme, the triangular support leg is provided with a horizontal mark. The horizontal mark is used for measuring and keeping the level of the whole device, so that the effective running of the test is ensured, the equipment keeping level is favorable for measuring the test of the explosion test, and the accuracy of the test is improved. The triangular legs minimize the impact of the blast energy. After the test, if the mud land under the verification board is settled or raised, the mud land can be calibrated again by the horizontal marks on the triangular support legs, and the next test can be carried out after the mud land is leveled again.
As a further improvement of the technical scheme, the boundary fence is of a rigid structure in the vertical direction and of a flexible structure in the horizontal direction. The rigid structure is adopted in the vertical direction, so that the simulation of the boundary of the sealing material in the ground test is facilitated, certain strength is achieved, the sealing boundary can be determined, and the test accuracy is improved. The horizontal direction is flexible structure, is favorable to setting up the shape of boundary wall and adjusting the scope of boundary wall according to the size and the shape of sample, more accurate setting boundary. .
As a further improvement of the technical scheme, the boundary enclosing wall is 0.5-1.0m away from the boundary of the sample. The simulation boundary can be adjusted in a certain range according to the size of the test article, and the method has the advantages of large adjustment margin and stronger applicability.
As a further improvement of the technical scheme, the boundary enclosing wall is square or round.
As a further improvement of the technical scheme, the wire netting encloses a circle along the triangular support leg, the height of the wire netting is consistent with that of the triangular support leg, and the wire netting is square or circular. The wire netting is used for preventing the sand that looses to sink and gets into inside the operation platform, can make the shock wave of explosion pass through the wire netting smoothly simultaneously again, does not influence the test of test result.
As a further improvement of the technical scheme, the pore diameter of the iron wire mesh is 1-4 cm.
As a further improvement of the technical scheme, the center of the bottom of the deep pit is higher than the edge of the deep pit to form a small hill slope gradually inclining to the edge, a square through hole is formed in the center of the bottom of the deep pit, a drainage ditch is arranged at the edge of the deep pit and provided with an opening leading to a drainage pit, and the drainage pit is provided with an exhaust hole and a water pumping hole extending out of the ground. This is for the purpose that water falling into the pit during rain can smoothly flow to the drainage ditch at the edge of the pit body and finally flow to the drainage pit. The water pumping hole extending out of the ground is arranged in the water drainage pit, so that the submersible pump can be conveniently hoisted, and the air exhaust hole is used for enabling atmospheric pressure to enter the water drainage pit and smoothly drain water. The square through hole is of a soil structure and is used for placing test equipment.
As a further improvement of the technical scheme, the periphery of the deep pit is provided with a revetment formed by piling sandbags. The function of bank protection is in order to prevent that the earth of periphery from collapsing, adopts the sand bag to pile up in order that should the explosion power exceed the design scope, and the sand bag can absorb partial energy, and remaining energy is let out by the sand bag clearance.
The working principle is as follows:
build a pit (pit) with diameter of 11m and depth of 2mThe size of the pit can be adjusted according to the actual size of the sample according to the requirements of the test of the United nations), the bottom is tamped by soil and trimmed into a slope with a slightly higher middle part and gradually inclined towards the edge, and the center of the pit bottom is dug to be 5m2The central pit is deep. Concrete is used for paving the pit bottom, and the central deep pit forms a square through hole in the center of the pit bottom. A circumferential drainage ditch with the width of 40cm is built at the edge of the pit, and a slope protection stacking plate with the width of 60cm is built outside the drainage ditch. And a drainage pit lower than the bottom of the pit is built beside the deep pit and is communicated with a drainage ditch. And two through holes extending out of the ground are built on the drainage pit, one through hole is used for communicating with the atmosphere, and the other through hole is used for hoisting the submersible pump. Set up the iron fence in escape canal and drain pit junction, prevent that sand and soil from dropping to in the drain pit. And (4) placing an anti-settling plate at the bottom of the central pit, correcting the level, and then building an operation platform on the anti-settling plate by using reinforced concrete. And (3) filling the central pit with soil until the central pit is flush with the bottom of the pit, tamping and correcting the central pit to be horizontal, and arranging a horizontal mark at the junction of the triangular support legs and the pit bottom. And forming a circle of iron wire net around the four support legs of the operation platform, wherein the height of the iron wire net is consistent with the height of the support legs. After the pit body is built, the deep pit is filled with scattered sand until the deep pit is flush with the ground. The explosive samples were then tested. Firstly, digging out scattered sand in the center of an operation platform, and exposing a soil plane at the bottom of a pit; placing a verification steel plate into the exposed pit bottom soil plane in the operation platform, adjusting the level of the verification steel plate, placing an explosion sample in the center of the verification steel plate, and connecting the explosion sample with an electronic igniter; then burying the center of an operation platform at the upper part of the explosion sample by using scattered sand, ensuring the thickness of the scattered sand to be more than 0.5m or 1.0m according to the volume of the sample, and detonating the explosion sample by adopting electronic ignition; and observing the size of the pit generated by explosion, verifying the damage and deformation degree of the steel plate, and judging the grade and classification of the explosion sample.
The invention has the following beneficial effects:
1. the test pit is reasonable in design, simple to construct, low in construction cost, simple and convenient to operate and high in safety when in experiment, can completely absorb and limit hazards generated by explosion in the test pit, effectively prevents potential safety risks, can be repeatedly used for multiple times, and meets the standard and the requirement of a united nation on the test of explosives; the size and depth of the deep pit in the test pit can be designed and built according to the long-term test result, and the explosion energy in the horizontal direction of the sample is completely absorbed by the scattered sand for sealing.
2. The pit of the invention is a reinforced concrete structure and can also be a soil pit, and the difference is that the reinforced concrete structure can prevent deformation caused by the settlement of soil, and can quickly drain water when raining, but the manufacturing cost is higher. If the budget is insufficient, the soil pit can be directly dug for use, if partial settlement is caused, the problem can be solved by supplementing scattered sand, and the test result is not influenced.
3. The operating platform is suspended above the sample through 4 triangular supporting legs, no barrier is arranged on the sample in the horizontal direction, and when the sample explodes, all energy in the horizontal direction can be completely absorbed by the sand layer without affecting the vertical direction of the sample.
4. One corner of the triangular supporting leg is aligned to the center point of the pit, so that energy transmission is not blocked in the horizontal direction, and the influence of the triangular supporting leg on explosion energy is minimized; meanwhile, the triangular support legs are provided with horizontal marks for measuring and maintaining the level of the whole device, so that the effective proceeding of the test is ensured, the equipment is kept horizontal, the test of the explosion test is favorably measured, and the accuracy of the test is improved.
5. The operating platform is of a square frame structure, can prevent scattered sand on the upper part from collapsing during digging, can be used for erecting relevant equipment such as a depth scale, a shock wave sensitivity instrument and the like, can provide a footing point for an operator in a sand pool, and is convenient for operations such as sand shoveling, measurement and the like.
6. The invention verifies that the mud land under the plate can be calibrated again by the horizontal mark on the triangular support leg if settlement or bulge occurs after the test, and the next test can be carried out after the mud land is leveled again.
7. The invention can simulate the test result of the ground to the maximum extent through the long enough energy dissipation distance in the horizontal direction. In addition, the boundary wall of the test pit can adjust the simulation boundary according to the actual size of the sample in a certain range according to the test requirements of the United nations, and has stronger adaptability. Meanwhile, the test pit can be repeatedly used, so that the excavation and the landfill of the secondary test are very convenient, and the labor cost and the time cost of the test are greatly saved.
8. The anti-settling plate can effectively prevent the ground from settling in repeated experiments of the test pit for multiple times, ensure the stability and levelness of the operation platform, and improve the repeated use times and the explosion test strength of the test pit without obvious settling.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic cross-sectional view of a pit body according to the present invention.
FIG. 4 is a schematic view of an operating platform of the present invention.
Reference numerals: the device comprises a deep pit 1, a square through hole 11, a drainage ditch 12, a drainage pit 13, an exhaust hole 14, a water pumping hole 15, a revetment 16, an operation platform 2, triangular support legs 21, horizontal marks 22, a settlement-preventing plate 23, a boundary wall 3, an iron wire net 4, a verification steel plate 5 and a display shell sample 6.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that the advantages and features of the invention may be more readily understood, it being understood that the following examples are only preferred versions of the invention and are not intended to limit the invention.
Example 1
A test pit (shown in figures 1-4) for explosive single package test and stacking test comprises a pit 1, an operation platform 2, a boundary enclosing wall 3 and a wire netting 4; the operation platform 2 is arranged at the center of the pit 1; the wire netting 4 is arranged inside the operation platform 2; a bounding wall 3 is provided outside the operation platform 2.
The operating platform 2 is a square frame body, and four triangular support legs 21 are arranged below four vertex angles of the operating platform 2; one of the corners of the triangular foot 21 points towards the centre point. The bottom ends of the triangular legs 21 are provided with anti-settling plates 23. The boundary wall 3 is of a rigid structure in the vertical direction and of a flexible structure in the horizontal direction. The triangular legs 21 are provided with horizontal markings 22. The wire netting 4 encloses into a circle along the triangular support leg 21, and the height of the wire netting is consistent with that of the triangular support leg 21 and is circular. The aperture of the wire netting 4 is 1 cm. The boundary wall 3 is 0.5m away from the boundary of the sample, and the boundary wall 3 is rectangular. The center of the bottom of the deep pit 1 is higher than the edge to form a hill slope gradually inclining towards the edge, a square through hole 11 is arranged in the center of the bottom of the pit, a drainage ditch 12 is arranged at the inner edge of the deep pit 1, the square through hole 11 is connected with the drainage ditch 12, a drainage pit 13 communicated with the drainage ditch 12 is arranged on the periphery of the deep pit 1, and the drainage pit 13 is provided with an exhaust hole 14 and a water pumping hole 15 extending out of the ground. The periphery of the pit 1 is provided with a revetment 16 formed by piling sand bags.
The specific implementation mode is as follows:
construction of test pit
Constructing a pit 1 with diameter of 11m and depth of 2m, tamping the bottom with soil, trimming to a slope with a slightly higher middle part and gradually inclining to the edge, and digging 5m at the center of the bottom2The central pit is deep. The bottom of the pit is paved with concrete, and a square through hole 11 is formed in the center of the central pit. A circumferential drainage ditch 12 with the width of 40cm is built at the edge of the pit, and a slope protection stacking plate with the width of 60cm is built outside the drainage ditch. And a drainage pit 13 which is lower than the bottom of the pit is built beside the deep pit and is communicated with a drainage ditch. Two through holes extending out of the ground are built on the drainage pit, one is a vent hole 14 used for communicating with the atmosphere, and the other is a drainage hole 15 used for hanging and placing the submersible pump. Set up the iron fence in escape canal and drain pit junction, prevent that sand and soil from dropping to in the drain pit. And (3) putting a settlement preventing plate 23 at the bottom of the central pit, correcting the level, and then building the operating platform 2 on the settlement preventing plate by using reinforced concrete. The central pit is filled with soil to be level with the bottom of the pit 1, and is tamped and corrected to be horizontal, and a horizontal mark 22 is arranged at the junction of the triangular support leg 21 and the pit bottom. The wire 4 is looped around the four legs of the operating platform to a height corresponding to the height of the legs 21. After the pit body is built, the deep pit 1 is filled with scattered sand until the deep pit is flush with the ground.
Single pack test of two, 4 inch display shell samples
1. The sand is dug in the center of the operation platform 2 until the bottom of the soil is exposed, and whether the soil is level with the horizontal mark 22 or not is observed, and the soil is corrected to be level if the soil is not level.
2. A2 m × 2m verification steel plate 5 is laid at the bottom of the test pit, and a display shell sample 6 is placed in the middle of the verification steel plate 5 (the volume of the display shell sample 6 is 0.12 m)3). The display shell sample 6 was docked with the electronic igniter.
3. When the display shell sample 6 is completely filled with the scattered sand, the boundary wall 3 is surrounded into a square frame according to the distance of 0.5m from the four sides of the sample, and the sand is continuously filled until the square frame of the operation platform 2 is filled until the thickness of the square frame from the upper part of the display shell sample 6 is more than 0.5 m.
3. The display shell sample 6 was ignited by electronic ignition and the phenomenon was recorded.
4. And after the test is finished, digging out all the scattered sand in the test pit, observing the condition that the pit bottom and the verification plate 5 are damaged, and preparing for the next test.
5.4 inch display shell observed: the sand used for sealing forms a pit, but the pit body does not exceed the boundary wall 3, and the scattered sand is not seriously splashed; the bottom steel plate has no obvious deformation; the bottom of the test pit did not show a pit. According to the recommendation test of the United nations about dangerous goods transportation and the judgment method of section 16.4 of the first part of the standard manual, the 4-inch display shell can eliminate the whole explosion and is listed as not 1.1
Example 2
A test pit for explosive single package test and stacking test comprises a pit 1, an operation platform 2, a boundary wall 3 and a wire netting 4; the operation platform 2 is arranged at the center of the pit 1; the wire netting 4 is arranged inside the operation platform 2; a bounding wall 3 is provided outside the operation platform 2.
The operating platform 2 is a square frame body, and four triangular support legs 21 are arranged below four vertex angles of the operating platform 2; one of the corners of the triangular foot 21 points towards the centre point. The bottom ends of the triangular legs 21 are provided with anti-settling plates 23. The boundary wall 3 is of a rigid structure in the vertical direction and of a flexible structure in the horizontal direction. The triangular legs 21 are provided with horizontal markings 22. The wire netting 4 encloses into a circle along the triangle-shaped stabilizer blade 21, and its height is unanimous with the height of triangle-shaped stabilizer blade 21, is square. The aperture of the wire netting 4 is 4 cm. The boundary wall 3 is 1.0m away from the boundary of the sample, and the boundary wall 3 is circular. The center of the bottom of the deep pit 1 is higher than the edge, a hill slope gradually inclining to the edge is formed, a square through hole 11 is formed in the center of the bottom of the pit, a drainage ditch 12 is formed in the inner edge of the deep pit 1, a drainage pit 13 communicated with the drainage ditch 12 is arranged on the periphery of the deep pit 1, and the drainage pit 13 is provided with an exhaust hole 14 and a water pumping hole 15 extending out of the ground. The periphery of the pit 1 is provided with a revetment 16 formed by piling sand bags.
The specific implementation mode is as follows:
construction of test pit
Constructing a pit 1 with diameter of 15m and depth of 3m, tamping the bottom with soil, trimming to a slope with a slightly higher middle part and gradually inclining to the edge, and digging 5m at the center of the bottom2The central pit is deep. The bottom of the pit is paved with concrete, and a square through hole 11 is formed in the center of the central pit. A circumferential drainage ditch 12 with the width of 40cm is built at the edge of the pit, and a slope protection stacking plate with the width of 60cm is built outside the drainage ditch. And a drainage pit 13 which is lower than the bottom of the pit is built beside the deep pit and is communicated with a drainage ditch. Two through holes extending out of the ground are built on the drainage pit, one is a vent hole 14 used for communicating with the atmosphere, and the other is a drainage hole 15 used for hanging and placing the submersible pump. Set up the iron fence in escape canal and drain pit junction, prevent that sand and soil from dropping to in the drain pit. And (3) putting a settlement preventing plate 23 at the bottom of the central pit, correcting the level, and then building the operating platform 2 on the settlement preventing plate by using reinforced concrete. The central pit is filled with soil to be level with the bottom of the pit 1, and is tamped and corrected to be horizontal, and a horizontal mark 22 is arranged at the junction of the triangular support leg 21 and the pit bottom. The wire 4 is looped around the four legs of the operating platform to a height corresponding to the height of the legs 21. After the pit body is built, the deep pit 1 is filled with scattered sand until the deep pit is flush with the ground.
Single pack test of two, 10 inch display shell samples
1. The sand is dug in the center of the operation platform 2 until the bottom of the soil is exposed, and whether the soil is level with the horizontal mark 22 or not is observed, and the soil is corrected to be level if the soil is not level.
2. A 2m multiplied by 2m verification steel plate 5 is laid at the bottom of the test pit, and a display shell sample 6 is placed on the verification steelThe center of the plate 5 (the volume of the display shell sample 6 is 0.18 m)3). The display shell sample 6 was docked with the electronic igniter.
3. When the display shell sample 6 is completely filled with the scattered sand, the iron wire net 4 is surrounded into a square shape according to the distance of 1.0m from the four sides of the sample, and the sand is continuously filled until the square frame of the operation platform 2 is filled until the thickness of the square frame from the upper part of the display shell sample 6 is more than 1.0 m.
3. The display shell sample 6 was ignited by electronic ignition and the phenomenon was recorded.
4. And after the test is finished, digging out all the scattered sand in the test pit, observing the condition that the pit bottom and the verification plate 5 are damaged, and preparing for the next test.
5.10 inch display shell observed: the scattered sand for sealing is serious in splashing; the formed pit partially exceeds the range of the boundary wall 3; the bottom steel plate has no obvious deformation; the bottom of the test pit did not show a pit. According to the recommendation test of the United nations about dangerous goods transportation and the judgment method of section 16.4 of the first part of the standard manual, the 10-inch display shell with the overall explosion can be listed as 1.1 item of explosive.
Example 3
A test pit for explosive single package test and stacking test comprises a pit 1, an operation platform 2, a boundary wall 3 and a wire netting 4; the operation platform 2 is arranged at the center of the pit 1; the wire netting 4 is arranged inside the operation platform 2; a bounding wall 3 is provided outside the operation platform 2.
The operating platform 2 is a square frame body, and four triangular support legs 21 are arranged below four vertex angles of the operating platform 2; one of the corners of the triangular foot 21 points towards the centre point. The bottom ends of the triangular legs 21 are provided with anti-settling plates 23. The triangular legs 21 are provided with horizontal markings 22. The boundary wall 3 is of a rigid structure in the vertical direction and of a flexible structure in the horizontal direction. The boundary wall 3 is 0.5m away from the boundary of the sample, and the boundary wall 3 is rectangular. The wire netting 4 encloses into a circle along the triangle-shaped stabilizer blade 21, and its height is unanimous with the height of triangle-shaped stabilizer blade 21, is square. The aperture of the wire netting 4 is 2 cm. The center of the bottom of the pit 1 is higher than the edge to form a hill slope gradually inclining towards the edge, a square through hole 11 is arranged in the center of the bottom of the pit, a drainage ditch 12 is arranged at the inner edge of the pit 1, a drainage pit 13 communicated with the drainage ditch 12 is arranged at the periphery of the pit 1, and the drainage pit 13 is provided with an exhaust hole 14 and a water pumping hole 15 extending out of the ground. The periphery of the pit 1 is provided with a revetment 16 formed by piling sand bags.
The specific implementation mode is as follows:
construction of test pit
Constructing a pit 1 with diameter of 13m and depth of 2.5m, tamping the bottom with soil, trimming to a slope with a slightly higher middle part and gradually inclining to the edge, and digging 5m at the center of the bottom2The central pit is deep. The bottom of the pit is paved with concrete, and a square through hole 11 is formed in the center of the central pit. A circumferential drainage ditch 12 with the width of 40cm is built at the edge of the pit, and a slope protection stacking plate with the width of 60cm is built outside the drainage ditch. And a drainage pit 13 which is lower than the bottom of the pit is built beside the deep pit and is communicated with a drainage ditch. Two through holes extending out of the ground are built on the drainage pit, one is a vent hole 14 used for communicating with the atmosphere, and the other is a drainage hole 15 used for hanging and placing the submersible pump. Set up the iron fence in escape canal and drain pit junction, prevent that sand and soil from dropping to in the drain pit. And (3) putting a settlement preventing plate 23 at the bottom of the central pit, correcting the level, and then building the operating platform 2 on the settlement preventing plate by using reinforced concrete. The central pit is filled with soil to be level with the bottom of the pit 1, and is tamped and corrected to be horizontal, and a horizontal mark 22 is arranged at the junction of the triangular support leg 21 and the pit bottom. The wire 4 is looped around the four legs of the operating platform to a height corresponding to the height of the legs 21. After the pit body is built, the deep pit 1 is filled with scattered sand until the deep pit is flush with the ground.
Second, test of single package of gas production drug sample
1. The sand is dug in the center of the operation platform 2 until the bottom of the soil is exposed, and whether the soil is level with the horizontal mark 22 or not is observed, and the soil is corrected to be level if the soil is not level.
2. A 2m multiplied by 2m verification steel plate 5 is laid at the bottom of the test pit, and a gas production sample 6 is placed in the middle of the verification steel plate 5 (the volume of the gas production drug sample 6 is 0.11 m)3). The electronic ignition head is wrapped in a paper bag of about 10g of black powder and put into a gas production powder sample 6, and the electronic ignition head is connected with the electronic igniter.
3. And when the gas production drug sample 6 is completely buried by the loose sand, the boundary wall 3 is surrounded into a square frame according to the distance of 0.5m from the four sides of the sample, and the sand is continuously buried until the square frame of the operation platform 2 is filled until the thickness of the square frame from the upper part of the display shell sample 6 is more than 0.5 m.
3. The gas generant sample 6 was ignited by electronic ignition and the phenomenon recorded.
4. And after the test is finished, digging out all the scattered sand in the test pit, observing the condition that the pit bottom and the verification plate 5 are damaged, and preparing for the next test.
5. Gassing was observed for sample 6: a hole is formed in the center of the scattered sand for sealing, the boundary wall 3 is intact, and the scattered sand is not seriously splashed; the bottom steel plate has no obvious deformation; the bottom of the test pit did not show a pit. According to the recommendation test of the United nations about dangerous goods transportation and the judgment method of section 16.4 of the first part of the standard manual, the gas generant composition can exclude the whole explosion and is listed as item other than 1.1.
Example 4
A test pit (shown in figures 1-4) for explosive single package test and stacking test comprises a pit 1, an operation platform 2, a boundary enclosing wall 3 and a wire netting 4; the operation platform 2 is arranged at the center of the pit 1; the wire netting 4 is arranged inside the operation platform 2; a bounding wall 3 is provided outside the operation platform 2.
The operating platform 2 is a square frame body, and four triangular support legs 21 are arranged below four vertex angles of the operating platform 2; one of the corners of the triangular foot 21 points towards the centre point. The triangular legs 21 are provided with horizontal markings 22. The boundary wall 3 is of a rigid structure in the vertical direction and of a flexible structure in the horizontal direction. The boundary wall 3 is 1.0m away from the boundary of the sample, and the boundary wall 3 is rectangular. The wire netting 4 encloses into a circle along the triangular support leg 21, and the height of the wire netting is consistent with that of the triangular support leg 21 and is circular. The aperture of the wire netting 4 is 3 cm.
The specific implementation mode is as follows: constructing a pit 1 with diameter of 11m and depth of 2m, tamping the bottom with soil, trimming to a slope with a slightly higher middle part and gradually inclining to the edge, and digging 5m at the center of the bottom2The central pit is deep. Spreading the bottom of pit with concrete, and reinforcing steel bar at the bottom of central pitAnd (3) constructing the operation platform 2 by using concrete. The central pit is filled with soil to be level with the bottom of the pit 1, and is tamped and corrected to be horizontal, and a horizontal mark 22 is arranged at the junction of the triangular support leg 21 and the pit bottom. The wire 4 is looped around the four legs of the operating platform to a height corresponding to the height of the legs 21. After the pit body is built, the deep pit 1 is filled with scattered sand until the deep pit is flush with the ground. The test can be performed.
Claims (8)
1. A test pit for explosive single package test and stacking test is characterized in that: comprises a pit (1), an operation platform (2), a boundary wall (3) and a wire netting (4); the operating platform (2) is arranged at the center of the pit (1); the wire netting (4) is arranged outside the operation platform (2); the boundary enclosing wall (3) is arranged inside the operation platform (2);
a square counter bore (11) is arranged in the center of the bottom of the deep pit (1); the bottom of the square counter bore (11) is provided with an anti-settling plate (23);
the operating platform (2) is a square frame body, and four triangular support legs (21) are arranged below four vertex angles of the operating platform (2); one of the corners of the triangular foot (21) points towards the centre point;
the four triangular support legs (21) are arranged at the top of the anti-settling plate (23).
2. A test pit for explosive single pack testing and stacking testing according to claim 1, characterized in that: the triangular support leg (21) is provided with a horizontal mark (22).
3. A test pit for explosive single pack testing and stacking testing according to claim 1, characterized in that: the vertical direction of the boundary enclosing wall (3) is a rigid structure, and the horizontal direction is a flexible structure.
4. A test pit for explosive single pack testing and stacking testing according to claim 3, characterized in that: the boundary enclosing wall (3) is 0.5-1.0m away from the boundary of the sample, and the boundary enclosing wall (3) is square or circular.
5. A test pit for explosive single pack testing and stacking testing according to claim 1, characterized in that: the iron wire net (4) is enclosed into a circle along the triangular support legs (21), the height of the iron wire net is consistent with that of the triangular support legs (21), and the iron wire net is square or circular.
6. A test pit for explosive single pack testing and stacking testing according to claim 5, characterized in that: the aperture of the iron wire net (4) is 1-4 cm.
7. A test pit for explosive single pack testing and stacking testing according to claim 1, characterized in that: pit (1) bottom central authorities are higher than the edge, form one gradually to the hillock slope of edge slope, the inward flange of pit (1) has escape canal (12), pit (1) periphery is equipped with drain pit (13) with escape canal (12) intercommunication, drain pit (13) be equipped with exhaust hole (14) and pumping hole (15) that stretch out ground.
8. A test pit for explosive single pack testing and stacking testing according to claim 1, characterized in that: and a protection slope (16) formed by piling sand bags is arranged around the pit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856955.5A CN109060881B (en) | 2018-07-31 | 2018-07-31 | Test pit for explosive single package test and stacking test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856955.5A CN109060881B (en) | 2018-07-31 | 2018-07-31 | Test pit for explosive single package test and stacking test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109060881A CN109060881A (en) | 2018-12-21 |
| CN109060881B true CN109060881B (en) | 2021-11-05 |
Family
ID=64831789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810856955.5A Active CN109060881B (en) | 2018-07-31 | 2018-07-31 | Test pit for explosive single package test and stacking test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109060881B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3768313A (en) * | 1970-12-02 | 1973-10-30 | Industrilaboratoriet Ab | Method of determining the risk of explosion of a preferably gaseous medium and apparatus for carrying out this method |
| CN104931528A (en) * | 2015-07-07 | 2015-09-23 | 中国科学技术大学 | Fluffy material combustion characteristic experimental device capable of adjusting voidage condition |
| CN204758586U (en) * | 2015-06-11 | 2015-11-11 | 中国人民解放军总参谋部工程兵科研三所 | Indoor explosion test device |
| CN105181745A (en) * | 2015-09-29 | 2015-12-23 | 中国人民解放军理工大学 | Combustible gas explosion testing device in explosion venting space |
| CN106596634A (en) * | 2016-12-13 | 2017-04-26 | 广西出入境检验检疫局危险品检测技术中心 | Test method for single pack test and stacking test of explosive |
| CN106596635A (en) * | 2016-12-13 | 2017-04-26 | 广西出入境检验检疫局危险品检测技术中心 | Test pit for single-packet tests and stacking tests of explosives |
| CN107271637A (en) * | 2017-06-29 | 2017-10-20 | 宁波市交通建设工程试验检测中心有限公司 | A kind of large-scale vibrating liquefaction test system and design method |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
| CN207051281U (en) * | 2017-06-29 | 2018-02-27 | 宁波市交通建设工程试验检测中心有限公司 | A kind of large-scale vibrating liquefaction test system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066705U (en) * | 2011-04-25 | 2011-12-07 | 中国人民解放军总参谋部工程兵科研三所 | Wave elimination mechanism of test device for geotechnical engineering anti-explosion structure modules |
| CN202066762U (en) * | 2011-04-25 | 2011-12-07 | 中国人民解放军总参谋部工程兵科研三所 | Anti-explosion test model room for geotechnical engineering |
| CN102262003A (en) * | 2011-04-25 | 2011-11-30 | 中国人民解放军总参谋部工程兵科研三所 | Geotechnical engineering anti-explosion structural model testing device |
| CN206670470U (en) * | 2017-03-31 | 2017-11-24 | 李明 | A kind of vertical recovery system of rocket |
-
2018
- 2018-07-31 CN CN201810856955.5A patent/CN109060881B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3768313A (en) * | 1970-12-02 | 1973-10-30 | Industrilaboratoriet Ab | Method of determining the risk of explosion of a preferably gaseous medium and apparatus for carrying out this method |
| CN204758586U (en) * | 2015-06-11 | 2015-11-11 | 中国人民解放军总参谋部工程兵科研三所 | Indoor explosion test device |
| CN104931528A (en) * | 2015-07-07 | 2015-09-23 | 中国科学技术大学 | Fluffy material combustion characteristic experimental device capable of adjusting voidage condition |
| CN105181745A (en) * | 2015-09-29 | 2015-12-23 | 中国人民解放军理工大学 | Combustible gas explosion testing device in explosion venting space |
| CN106596634A (en) * | 2016-12-13 | 2017-04-26 | 广西出入境检验检疫局危险品检测技术中心 | Test method for single pack test and stacking test of explosive |
| CN106596635A (en) * | 2016-12-13 | 2017-04-26 | 广西出入境检验检疫局危险品检测技术中心 | Test pit for single-packet tests and stacking tests of explosives |
| CN107271637A (en) * | 2017-06-29 | 2017-10-20 | 宁波市交通建设工程试验检测中心有限公司 | A kind of large-scale vibrating liquefaction test system and design method |
| CN207051281U (en) * | 2017-06-29 | 2018-02-27 | 宁波市交通建设工程试验检测中心有限公司 | A kind of large-scale vibrating liquefaction test system |
| CN107587557A (en) * | 2017-09-27 | 2018-01-16 | 广东景源建设工程有限公司 | Outdoor water engineering construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109060881A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108360527A (en) | A kind of earthwork evacuation construction method | |
| CN106703050A (en) | Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof | |
| CN106644336B (en) | A kind of frame structure crosses over ground fissure experimental system and method | |
| CN108642987B (en) | A kind of sandy soil liquefied foundation processing method | |
| De et al. | Physical modeling of explosive effects on tunnels | |
| CN113832958B (en) | Anti-slide pile construction method with mechanical cooperation with manual excavation | |
| CN107190776B (en) | Water discharge tunnel standpipe plants pipe construction device and method | |
| CN109060881B (en) | Test pit for explosive single package test and stacking test | |
| CN212506107U (en) | Wave dissipation slope protection structure for water ecological restoration | |
| RU2408906C1 (en) | Method of reducing volcano dynamic effects on environment during eruption | |
| CN112281873A (en) | Construction method of anchoring pile | |
| CN106226022A (en) | A kind of underground civil defense engineering anti-nuclear blast experimental system for simulating and experimental technique | |
| CN108589704A (en) | Concrete pouring of punched hole piles method | |
| CN206815405U (en) | A kind of intensive drilling anti-explosion shock structure of back-up sand vibration isolation campshed | |
| CN114753354A (en) | Water-rich sandy gravel geological pile forming construction method | |
| CN111851510B (en) | Earth rock foundation pit blasting excavation system and construction method applying same | |
| JP5722495B1 (en) | Installation method of renewable energy power generation facilities | |
| JPH02213522A (en) | Construction method for base of structure | |
| CN1776110A (en) | Synchronous blast-enlarging treatment method for liquified soil foundation of highway | |
| CN112627185A (en) | Deep cutting and controlled blasting excavation construction method thereof | |
| AU2019253896A1 (en) | A cellar liner | |
| CN206056910U (en) | A kind of anti-nuclear blast experimental system for simulating of underground civil defense engineering | |
| RU67591U1 (en) | OPEN OPERATION GUARDING DESIGN | |
| JP2019108677A (en) | Drain pile and liquefaction countermeasures method | |
| Ho et al. | Jet grouting for the mitigation of excavation wall movements in glacial silts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210930 Address after: 530028 No. 24, Zhuxi Avenue, Qingxiu District, Nanning City, Guangxi Zhuang Autonomous Region Applicant after: Nanning Customs Technology Center Address before: No. 41, Guizhou Road, Haicheng District, Beihai City, Guangxi Zhuang Autonomous Region Applicant before: DETECTION TECHNOLOGY CENTER OF GUANGXI ENTRY-EXIT INSPECTION AND QUARANTINE BUREAU |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |