泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)在(Zai)机(Ji)场(Chang)跑(Pao)道(Dao)安(An)全(Quan)阻(Zu)滞(Zhi)系(Xi)统(Tong)中(Zhong)的(De)运(Yun)用(Yong)
机(Ji)场(Chang)跑(Pao)道(Dao)安(An)全(Quan)阻(Zu)滞(Zhi)材(Cai)料(Liao),(?)是(Shi)铺(Pu)装(Zhuang)在(Zai)飞(Fei)机(Ji)场(Chang)主(Zhu)跑(Pao)道(Dao)末(Mo)端(Duan)延(Yan)长(Chang)线(Xian)上(Shang)的(De)低(Di)密(Mi)度(Du)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)。(?)当(Dang)飞(Fei)机(Ji)在(Zai)起(Qi)飞(Fei)降(Jiang)落(Luo)过(Guo)程(Cheng)中(Zhong)因(Yin)事(Shi)故(Gu)冲(Chong)出(Chu)跑(Pao)道(Dao)之(Zhi)时(Shi),(?)就(Jiu)会(Hui)冲(Chong)入(Ru)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)形(Xing)成(Cheng)的(De)阻(Zu)滞(Zhi)床(Chuang)。(?)由(You)于(Yu)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)的(De)微(Wei)孔(Kong)结(Jie)构(Gou)具(Ju)有(You)吸(Xi)能(Neng)作(Zuo)用(Yong),(?)可(Ke)以(Yi)有(You)效(Xiao)吸(Xi)收(Shou)失(Shi)事(Shi)飞(Fei)机(Ji)的(De)冲(Chong)击(Ji)能(Neng)量(Liang),(?)迫(Po)使(Shi)飞(Fei)机(Ji)在(Zai)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)阻(Zu)滞(Zhi)床(Chuang)中(Zhong)停(Ting)止(Zhi)冲(Chong)滑(Hua),(?)获(Huo)得(De)拦(Lan)阻(Zu),(?)从(Cong)而(?)避(Bi)免(Mian)发(Fa)生(Sheng)的(De)事(Shi)故(Gu)。(?)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)强(Qiang)度(Du)较(Jiao)低(Di),(?)在(Zai)飞(Fei)机(Ji)冲(Chong)击(Ji)中(Zhong)被(Bei)撞(Zhuang)成(Cheng)粉(Fen)末(Mo)和(He)柔(Rou)性(Xing)小(Xiao)块(Kuai),(?)即(Ji)使(Shi)飞(Fei)起(Qi),(?)也(Ye)不(Bu)会(Hui)对(Dui)飞(Fei)机(Ji)及(Ji)机(Ji)上(Shang)人(Ren)员(Yuan)造(Zao)成(Cheng)伤(Shang)害(Hai)。(?)
这(Zhe)样(Yang),(?)飞(Fei)机(Ji)就(Jiu)可(Ke)以(Yi)在(Zai)不(Bu)受(Shou)损(Sun)伤(Shang)的(De)情(Qing)况(Kuang)下(Xia)得(De)到(Dao)有(You)效(Xiao)的(De)保(Bao)护(Hu)、(?)化(Hua)险(Xian)为(Wei)夷(Yi)。(?)因(Yin)此(Ci),(?)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)机(Ji)场(Chang)阻(Zu)滞(Zhi)材(Cai)料(Liao)是(Shi)飞(Fei)机(Ji)起(Qi)飞(Fei)降(Jiang)落(Luo)的(De)安(An)全(Quan)屏(Ping)障(Zhang)。(?)
技(Ji)术(Shu)原(Yuan)理(Li)
机(Ji)场(Chang)安(An)全(Quan)阻(Zu)滞(Zhi)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)材(Cai)料(Liao),(?)主(Zhu)要(Yao)是(Shi)利(Li)用(Yong)其(Qi)高(Gao)孔(Kong)隙(Xi)率(Lu)所(Suo)形(Xing)成(Cheng)的(De)抗(Kang)冲(Chong)击(Ji)削(Xiao)波(Bo)吸(Xi)能(Neng)功(Gong)能(Neng)。(?)
但(Dan)凡(Fan)多(Duo)孔(Kong)材(Cai)料(Liao),(?)一(Yi)般(Ban)均(Jun)具(Ju)有(You)削(Xiao)波(Bo)吸(Xi)能(Neng)性(Xing)。(?)我(Wo)们(Men)平(Ping)常(Chang)采(Cai)用(Yong)泡(Pao)沫(Mo)塑(Su)料(Liao)做(Zuo)货(Huo)物(Wu)包(Bao)装(Zhuang),(?)也(Ye)就(Jiu)是(Shi)利(Li)用(Yong)其(Qi)多(Duo)孔(Kong)性(Xing)来(Lai)吸(Xi)收(Shou)和(He)削(Xiao)减(Jian)震(Zhen)动(Dong)、(?)冲(Chong)击(Ji)、(?)挤(Ji)压(Ya)等(Deng)破(Po)坏(Huai)能(Neng)量(Liang),(?)保(Bao)护(Hu)物(Wu)品(Pin)不(Bu)被(Bei)能(Neng)量(Liang)波(Bo)所(Suo)破(Po)坏(Huai)。(?)机(Ji)场(Chang)安(An)全(Quan)阻(Zu)滞(Zhi)材(Cai)料(Liao)也(Ye)基(Ji)本(Ben)属(Shu)于(Yu)这(Zhe)一(Yi)原(Yuan)理(Li)。(?)
研(Yan)究(Jiu)表(Biao)明(Ming),(?)当(Dang)应(Ying)力(Li)波(Bo)穿(Chuan)过(Guo)多(Duo)孔(Kong)泡(Pao)沫(Mo)材(Cai)料(Liao)时(Shi),(?)动(Dong)量(Liang)与(Yu)能(Neng)量(Liang)均(Jun)呈(Cheng)下(Xia)降(Jiang)。(?)多(Duo)孔(Kong)泡(Pao)沫(Mo)材(Cai)料(Liao)不(Bu)仅(Jin)可(Ke)以(Yi)吸(Xi)收(Shou)冲(Chong)击(Ji)波(Bo)的(De)冲(Chong)击(Ji)能(Neng)量(Liang),(?)也(Ye)能(Neng)够(Gou)减(Jian)缓(Huan)主(Zhu)体(Ti)材(Cai)料(Liao)的(De)破(Po)损(Sun)。(?)当(Dang)应(Ying)力(Li)波(Bo)通(Tong)过(Guo)密(Mi)度(Du)为(Wei)450kg/m的(De)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)多(Duo)孔(Kong)材(Cai)料(Liao)时(Shi),(?)其(Qi)峰(Feng)值(Zhi)被(Bei)衰(Shuai)减(Jian)为(Wei)原(Yuan)来(Lai)的(De)1/(?)5,(?)而(?)通(Tong)过(Guo)普(Pu)通(Tong)混(Hun)凝(Ning)土(Tu)时(Shi),(?)其(Qi)峰(Feng)值(Zhi)衰(Shuai)减(Jian)仅(Jin)为(Wei)原(Yuan)来(Lai)的(De)1/(?)20。(?)这(Zhe)巨(Ju)大(Da)的(De)反(Fan)差(Cha)足(Zu)以(Yi)说(Shuo)明(Ming)多(Duo)孔(Kong)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)材(Cai)料(Liao)的(De)能(Neng)量(Liang)吸(Xi)收(Shou)性(Xing)。(?)
当(Dang)冲(Chong)击(Ji)波(Bo)作(Zuo)用(Yong)在(Zai)阻(Zu)滞(Zhi)材(Cai)料(Liao)上(Shang)时(Shi),(?)在(Zai)冲(Chong)击(Ji)波(Bo)的(De)作(Zuo)用(Yong)下(Xia),(?)多(Duo)孔(Kong)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)材(Cai)料(Liao)首(Shou)先(Xian)发(Fa)生(Sheng)孔(Kong)壁(Bi)的(De)弹(Dan)性(Xing)变(Bian)形(Xing),(?)部(Bu)分(Fen)冲(Chong)击(Ji)能(Neng)量(Liang)转(Zhuan)变(Bian)为(Wei)弹(Dan)性(Xing)能(Neng),(?)同(Tong)时(Shi)气(Qi)隙(Xi)被(Bei)绝(Jue)热(Re)压(Ya)缩(Suo)并(Bing)吸(Xi)收(Shou)部(Bu)分(Fen)能(Neng)量(Liang),(?)继(Ji)而(?),(?)孔(Kong)壁(Bi)发(Fa)生(Sheng)塑(Su)性(Xing)塌(Ta)缩(Suo)或(Huo)脆(Cui)性(Xing)破(Po)碎(Sui),(?)将(Jiang)部(Bu)分(Fen)冲(Chong)击(Ji)能(Neng)量(Liang)转(Zhuan)变(Bian)为(Wei)塑(Su)性(Xing)变(Bian)形(Xing)能(Neng)被(Bei)消(Xiao)耗(Hao)掉(Diao)。(?)这(Zhe)样(Yang),(?)失(Shi)事(Shi)飞(Fei)机(Ji)的(De)冲(Chong)击(Ji)能(Neng)量(Liang)就(Jiu)被(Bei)阻(Zu)滞(Zhi)材(Cai)料(Liao)吸(Xi)收(Shou)和(He)削(Xiao)减(Jian),(?)迫(Po)使(Shi)飞(Fei)机(Ji)平(Ping)稳(Wen)停(Ting)止(Zhi)滑(Hua)行(Xing)。(?)
虽(Sui)然(Ran)泡(Pao)沫(Mo)多(Duo)孔(Kong)材(Cai)料(Liao)均(Jun)具(Ju)吸(Xi)能(Neng)性(Xing),(?)但(Dan)泡(Pao)沫(Mo)塑(Su)料(Liao)不(Bu)耐(Nai)老(Lao)化(Hua)、(?)不(Bu)环(Huan)保(Bao),(?)泡(Pao)沫(Mo)玻(Bo)璃(Li)及(Ji)泡(Pao)沫(Mo)陶(Tao)瓷(Ci)造(Zao)价(Jia)高(Gao)且(Qie)生(Sheng)产(Chan)难(Nan)度(Du)大(Da)。(?)各(Ge)种(Zhong)多(Duo)孔(Kong)材(Cai)料(Liao)对(Dui)比(Bi)来(Lai)看(Kan),(?)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)的(De)阻(Zu)滞(Zhi)性(Xing)能(Neng)优(You),(?)且(Qie)造(Zao)价(Jia)低(Di),(?)生(Sheng)产(Chan)方(Fang)便(Bian)、(?)环(Huan)保(Bao)性(Xing)好(Hao),(?)因(Yin)此(Ci),(?)美(Mei)国(Guo)专(Zhuan)家(Jia)们(Men)终(Zhong)选(Xuan)定(Ding)的(De)是(Shi)泡(Pao)沫(Mo)混(Hun)凝(Ning)土(Tu)。(?)